УСТРОЙСТВО ДЛЯ АКУСТИЧЕСКОЙ ДИАГНОСТИКИ ДВИГАТЕЛЕЙ

Изобретение относится к области технических средств диагностирования двигателей внутреннего сгорания по акустическим сигналам и предназначено для упрощения процесса диагностики, повышения ее точности с указанием причины поломки, а также указанием узла или элемента, приведшего к ухудшению работы двигателя. Решение поставленной задачи достигается тем, что устройство содержит последовательно установленные лазер, фокусирующую линзу, голограмму, наклонную зеркальную мембрану под углом α к голограмме, фотодетектор, соединенный электрическим кабелем через усилитель электрических сигналов с входом компьютера, где в качестве основного информационного параметра берется акустический сигнал, генерируемый двигателем. Акустический сигнал, генерируемый двигателем внутреннего сгорания, попадает на датчик акустических сигналов, выполненный в виде мембраны, и приводит ее к колебательному процессу по закону внешнего источника акустических колебаний. Лазерный луч модулируется мембраной по фазе, проходя через ...

Тестер остаточного ресурса и способ тестового технического диагностирования кривошипно-шатунного механизма автомобильного ДВС

Тестер остаточного ресурса (ТОР) предназначен для безразборного технического диагностирования кривошипно-шатунного механизма (КШМ) автомобильного рядного, V-образного или оппозитного бензинового или дизельного ДВС с числом цилиндров 2…12, рабочим объемом 0,903…22,3 л, оснащенного системой непрерывной или прерывистой подачи масла к шатунным подшипникам коленчатого вала (КВ). ТОР включает микропроцессорные средства, имеющие программное обеспечение, посредством которых осуществляют автоматизированную обработку информации о максимальном, редуцированном, тестовом и текущем давлении и температуре масла, частоте оборотов, рабочем объеме и количестве капитальных ремонтов (КР) ДВС, автоматическое определение и представление в графическом виде размеров зазоров коренного и шатунного подшипников, значений фактического износа и прогнозируемого остаточного ресурса КШМ до КР в тысячах километров и процентах, оценки качества последнего КР. В сравнении с аналогами ТОР расширяет область диагностируемых ДВС ...

СТЕНД ДЛЯ ИССЛЕДОВАНИЯ РАБОЧИХ ПРОЦЕССОВ ДВИГАТЕЛЯ ВНУТРЕННЕГО СГОРАНИЯ В ДИНАМИЧЕСКИХ РЕЖИМАХ С ВОЗМОЖНОСТЬЮ ИМИТАЦИИ НЕКОТОРЫХ НЕИСПРАВНОСТЕЙ ДВИГАТЕЛЯ

Стенд, содержащий двигатель внутреннего сгорания, электротормоз, датчик частоты вращения, датчик момента сопротивления на валу двигателя, датчик расхода воздуха, датчик расхода топлива, датчик тока возбуждения электротормоза, блок сбора данных, запоминающее устройство, блок расшифровки результатов идентификации и имитатор типовых нагрузок, отличающийся тем, что введены устройство для плавного регулирования компрессии в каждом цилиндре двигателя с блоком управления устройством для плавного регулирования компрессии, устройство и блок управления устройством для регулирования расхода воздуха, устройство и блок управления устройством регулирования подачи топлива в ТНВД, блок сравнения переходных функций двигателя, блок принятия решения о техническом состоянии двигателя.

ПРИБОР ДЛЯ ДИАГНОСТИКИ ДВИГАТЕЛЯ ВНУТРЕННЕГО СГОРАНИЯ ПО ПЕРЕХОДНЫМ ХАРАКТЕРИСТИКАМ

Прибор для диагностики двигателя, содержащий встроенный дисплей для вывода информации, разъем для подключения датчика частоты вращения коленчатого вала, отличающийся тем, что в него введены разъемы для подключения датчика давления впрыскиваемого топлива, разряжения во впускном коллекторе, давления масла двигателя, разъем для подключения к ЭВМ, блок ввода статистических данных, блок ввода управляющего сигнала, блок сравнения данных, блок определения вероятности неисправности.

АНАЛИЗАТОР РАБОТЫ СИСТЕМ ДВИГАТЕЛЯ ВНУТРЕННЕГО СГОРАНИЯ

Изобретение относится к устройствам для измерения параметров систем двигателя внутреннего сгорания и может быть использовано для диагностирования двигателей внутреннего сгорания. В анализатор работы систем двигателя внутреннего сгорания дополнительно введены третий и четвертый счетчики, вторая схема выборки-хранения, дополнительные запоминающие конденсаторы, индикатор компрессии в цилиндрах двигателя, второй ключ управления, причем выход усилителя-формирователя соединен с входом сброса третьего счетчика, а второй выход детектора тока стартера - с его счетным входом и второй схемой выборки-хранения, к которой включены запоминающие конденсаторы по числу цилиндров двигателя, выход второй схемой выборки-хранения соединен со входом индикатора компрессии в цилиндрах двигателя, счетный вход четвертого счетчика связан через второй ключ управления с корпусом, а его выходы - с входами второй схемы выборки-хранения. Техническим результатом является повышение информативности при диагностировании разброса ...

АНАЛИЗАТОР РАБОТЫ СИСТЕМ ДВИГАТЕЛЯ ВНУТРЕННЕГО СГОРАНИЯ

Анализатор работы систем двигателя внутреннего сгорания, содержащий детектор тока стартера, генератор импульсов момента зажигания, компаратор, умножитель частоты тока стартера, блок совпадения с двумя входами, индикатор среднего значения тока, инвертор, пиковые детекторы максимального и минимального значений амплитуды тока стартера, индикатор разности напряжений, вольтметр постоянного тока и амперметр с датчиком тока, причем первый выход детектора тока стартера прямо и через инвертор и первый и второй выходы генератора импульсов момента зажигания соединены со входами компаратора, умножитель частоты включен между вторым выходом детектора тока стартера и входом блока совпадения, другой вход которого соединен с выходом компаратора, пиковые детекторы включены между вторым выходом детектора тока стартера и индикатором разности напряжений, а индикатор среднего значения тока подключен к третьим выходам детектора тока стартера и генератора импульсов момента зажигания, вольтметр постоянного тока ...

СТЕНД ДЛЯ ИСПЫТАНИЙ ДВИГАТЕЛЯ ВНУТРЕННЕГО СГОРАНИЯ

Стенд для испытаний двигателя внутреннего сгорания (ДВС), содержащий ДВС, устройство измерения крутящего момента, соединенное с коленчатым валом, устройство измерения частоты вращения коленчатого вала, установленное на коленчатом валу ДВС, устройство измерения расхода воздуха, устройство измерения расхода топлива, нагрузочное устройство, контрольно-измерительную систему с возможностью сбора, идентификации, расшифровки и записи результатов измерений, отличающийся тем, что ДВС выполнен в виде одноцилиндровой установки, а стенд дополнительно содержит автоматизированную систему управления стендом, электронный блок управления ДВС, систему подготовки, подачи и измерения расхода наддувочного воздуха, систему подготовки, подачи и измерения расхода топлива, систему подготовки, подачи и измерения потока охлаждающей жидкости, систему подготовки, подачи и измерения потока масла и систему выпуска отработавших газов и газоанализа, выходы которых соединены с одноцилиндровой установкой, а входы с автоматизированной ...

СИСТЕМА ТРАНСПОРТНОГО СРЕДСТВА С ГИБРИДНЫМ ПРИВОДОМ

... 1. Система транспортного средства с гибридным приводом, содержащая:двигатель, включающий в себя цилиндр с поршнем;электродвигатель;привод на ведущие колеса, присоединяющий двигатель и электродвигатель друг к другу и к ведущим колесам транспортного средства;центральную консоль, включающую в себя дисплей для приема входного сигнала оператора;датчик для измерения положения поршня; иконтроллер с машинно-читаемыми командами дляпереключения транспортного средства в режим обслуживания во время выбранных условий без сгорания, когда режим обслуживания запрошен оператором;во время режима обслуживания, отображения множества вариантов диагностической проверки оператору на дисплее центральной консоли;приема выбора диагностической проверки оператора на дисплее;дополнительного приема входного сигнала оператора касательно запроса положения поршня через диагностический инструмент для обслуживания; иэксплуатации электродвигателя для поворачивания коленчатого вала двигателя на основании запроса положения ...

СИСТЕМА ДЛЯ ВЫЯВЛЕНИЯ ПРОПУСКОВ ЗАЖИГАНИЯ И ВОЗОБНОВЛЕНИЯ РАБОТЫ РЯДА ЦИЛИНДРОВ

Описаны различные системы и способы вывода из работы и возобновления работы ряда цилиндров в V-образном двигателе. В одном из примеров, ряд цилиндров выводится из работы в ответ на указание пропусков зажигания на основании ускорения коленчатого вала и воздушно-топливного соотношения выхлопных газов. Ряд цилиндров подвергается последовательному возобновлению работы на основании температуры каталитического нейтрализатора выхлопных газов. (Фиг. 1) ...

АВТОМАТИЗИРОВАННАЯ СИСТЕМА УДАЛЕННОЙ ДИАГНОСТИКИ ТЕХНИЧЕСКОГО СОСТОЯНИЯ ТРАНСПОРТНЫХ СРЕДСТВ НА ОСНОВЕ МАТРИЧНОГО QR-КОДА

Изобретение может быть использовано в устройствах для стендовых испытаний двигателей внутреннего сгорания. Автоматизированная система мониторинга экологических параметров двигателя внутреннего сгорания транспортных средств, содержит испытуемый двигатель (1), датчик (2) частоты вращения коленчатого вала, датчик (3) распределительного вала, датчик (4) давления газа в цилиндре двигателя, датчик (5) положения дроссельной заслонки, датчик (6) детонации, датчик (7) угловых отметок коленчатого вала, датчик (33) концентрации кислорода, датчик (9) массового расхода воздуха, газоанализатор (10) вредных выбросов продуктов сгорания, блок (11) управления двигателем и электронный блок (12) управления испытуемого двигателя. В состав системы входят аналого-цифровой преобразователь (13), персональный компьютер (14) с монитором, нагружающее устройство (15), блок управления (16), модель (17) электронного блока управления, интерфейс (18) связи, имитатор (19) ключа зажигания, генератор-имитатор (20), коммутатор ...

СПОСОБ ОЦЕНКИ ТЕХНИЧЕСКОГО СОСТОЯНИЯ ДВИГАТЕЛЯ ВНУТРЕННЕГО СГОРАНИЯ

Способ оценки технического состояния двигателя внутреннего сгорания, отличающийся тем, что износ пар трения выявляется контролем отклонения расхода масла в системе смазки от эталонного при доливе масла в процессе эксплуатации, а величину остаточного ресурса SO деталей цилиндро-поршневой группы двигателя в километрах пробега автомобиля ! ! определяют, используя эмпирическую зависимость расхода масла на долив по графику (Фиг.1.) от расчетного пробега автомобиля SiP в километрах, вычислив безразмерный коэффициент КMi: ! ! где GMi - суммарный расход масла на долив в литрах (килограммах) между (i - 1) и i-той заменой масла; ! GM0 - расход масла на долив в литрах (килограммах) нового технически исправного автомобиля; ! SP - ресурс деталей цилиндро-поршневой группы двигателя, гарантируемый заводом-изготовителем в километрах пробега автомобиля; ! SiP - расчетный выработанный пробег автомобиля при i-той замене масла в километрах, определяемый в соответствии с расчетным значением безразмерного коэффициента ...

Способ и система контроля параметров технического состояния двигателя внутреннего сгорания

УСТРОЙСТВО ДЛЯ ДИАГНОСТИРОВАНИЯ БЕНЗИНОВЫХ ДВИГАТЕЛЕЙ ВНУТРЕННЕГО СГОРАНИЯ ПУТЕМ ОТКЛЮЧЕНИЯ ТОПЛИВНЫХ ФОРСУНОК И ФИКСАЦИЕЙ ПАРАМЕТРОВ ПРОЦЕССОВ ТОПЛИВОПОДАЧИ

Полезная модель относится к области эксплуатации машин и может быть использована при диагностировании двигателей внутреннего сгорания; топливной системы двигателей. Технический результат заявляемой полезной модели заключается в повышении эффективности контроля технического состояния двигателей внутреннего сгорания. Указанный технический результат заявляемой полезной модели достигается тем, что устройство для диагностирования бензиновых двигателей внутреннего сгорания путем отключения топливных форсунок и фиксацией параметров процессов топливоподачи включает электронное устройство с электрическими проводами, разъемами и ручками управления для частичного отключения электромагнитных топливных форсунок двигателя, устройство для диагностирования установлено в прямоугольном пластиковом корпусе, электронное устройство выполнено на базе микроконтроллера с управляющей программой, который электрически соединен с преобразователем напряжения для подачи питания от аккумуляторных батарей, на вход микроконтроллера ...

Диагностический комплекс для удаленной оценки технического состояния дизельных двигателей внутреннего сгорания

Изобретение относится к установкам для диагностирования дизельных двигателей внутреннего сгорания (ДВС) транспортных, транспортно-технологических машин и оборудования. Предлагается диагностический комплекс для удаленной оценки технического состояния дизельных ДВС, состоящий из датчика положения коленчатого вала 4, пьезодатчиков с пьезоусилителями 1, предназначенных для определения радиальной деформации топливного трубопровода высокого давления ДВС, токовых клещей 7, датчика давления разрежения во впускном коллекторе 6 и датчика давления в выпускном коллекторе 6. Комплекс содержит терминал ГЛОНАСС/GPS 9, устройство для измерения скорости износа с датчиком температуры 3, контролирующее наличие железосодержащих частиц в масле ДВС и определяющее температуру моторного масла в поддоне ДВС, счетчик моточасов 5 работы ДВС, датчик давления 8 с электроклапаном в системе вентиляции картерных газов. Применение диагностического комплекса позволяет снизить время организационных простоев из-за ожидания ...

Анализатор работы двигателя внутреннего сгорания

Устройство для определения режимов работы двигателя внутреннего сгорания

Изобретение может быть использовано для регистрации продолжительности работы двигателя на различных скоростных режимах. Выход приемника 1 импульсов зажигания через формирователь 4 импульсов связан с счетным входом счетчика 5 импульсов зажигания, установочный вход которого подключен к выходу генератора 6 временных импульсов, входу схемы 11 задержки и первым входам элементов (Э) И 12, вторые входы которых связаны с соответствующими выходами распределителя 10. Счетчик 5 имеет число разрядов по числу двоичных разрядов, необходимых для представления частоты импульсов зажигания, соотв.макс. частоте вращения вала двигателя. Выходы разрядов подключены к входам соотв. Э НЕ 7 и Э И 8, а выходы ЭИ 8 каждого диапазона подключены к соответствующим входам Э ИЛИ-НЕ 9, выход которого связан с первым счетным входом распределителя 10, вход начального сдвига которого подключен к выходу ЭИ 8 первого диапазона, второй счетный вход и вход установки - к выходу схемы 11. Выходы каждого ЭИ 12 посредством счетчиков ...

Устройство для контроля параметров двигателя внутреннего сгорания

Устройство для контроля параметров двигателя внутреннего сгорания (ДВС) служит для определения числа цилиндров, числа оборотов коленчатого вала, угла опережения зажигания и вторичного напряжения катушки зажигания - на каждой свече и обеспечивает повышение достоверности контроля. Оно содержит датчик 1 верхней мертвой точки, датчик 3 сигнала зажигания , первый 2, второй 4, третий 20 и четвертый 22 формирователи сигналов , первый 5 и второй 21 одновибра- торы, процессор 6, блоки 11 и 12 постоянной и оперативной памяти, генератор 16 тактовых импульсов, первый 13 и второй 14 блоки формирования управляющих сигналов, соединительные пшны ввода данных, блок индикации 15, первый 17, второй 18 и третий 19 электронные коммутаторы, источник эталонного сигнала 26, преобразователь 24 напряжения в частоту, делитель 25. Принцип работы устройства основан на заполнении определенного интервала времени, пропорционального величине измеряемого параметра, синхроимпульсами фиксированной частоты и расчете численного ...

Diagnosevorrichtung und Verfahren zum Ermitteln einer Wirkung einer Additivzugabe auf einen Antriebsstrang eines Kraftfahrzeuges

Die Erfindung schafft eine Diagnosevorrichtung zum Ermitteln einer Wirkung einer Additivzugabe auf einen Antriebsstrang (110) eines Kraftfahrzeuges (100), mit einer Steuereinrichtung (10), welche dazu ausgelegt ist, einen Verbrennungsmotor (120) des Antriebsstranges (110) basierend auf mindestens einem Steuergeräteparameter während der Additivzugabe zu steuern; einer Erfassungseinrichtung (20), welche dazu ausgelegt ist, mindestens einen Prozessparameter der Additivzugabe und mindestens einen Betriebsparameter des Antriebsstranges (110) während der Additivzugabe zu erfassen; einer Vergleichseinrichtung (30), welche mit der Erfassungseinrichtung (20) gekoppelt ist und welche dazu ausgelegt ist, den erfassten mindestens einen Prozessparameter und den erfassten mindestens einen Betriebsparameter mit in einer Speichereinrichtung (35) abgespeicherten Parameterwerten zu vergleichen und darauf basierend mindestens ein Vergleichsergebnis zu ermitteln; und einer Auswertungseinrichtung (40), welche ...

VERFAHREN ZUM DIAGNOSTIZIEREN DES VERHALTENS DER ZYLINDER EINES MEHRZYLINDERVERBRENNUNGSMOTORS SOWIE EINRICHTUNG ZUM DURCHFUEHREN DESSELBEN

Diagnosesystem für ein Kraftfahrzeug

The flexibility of a vehicle diagnosis system is increased by providing a memory cartridge 60 for insertion in the diagnostic unit 100, the cartridge including the diagnostic program and communication protocol for the particular vehicle to be tested. So as to allow testing of systems on the vehicle which operate on different supply voltages without changing the cartridge 60, an interface 51 is provided to match the levels of signals passed between the vehicle control unit 2 and the diagnostic unit. This can be done using the circuit of figure 4 to match the level of signals. Alternatively (figure 6), data concerning the supply voltage of the vehicle control system being tested is stored in the ROM 61 of the memory cartridge and this is used to match the signal levels transmitted between the control unit 2 and the diagnostic unit 100. ...

VERFAHREN ZUR ABSICHERUNG DER ZUVERLÄSSIGKEIT VON TECHNISCHEN BAUTEILEN

TESTSTAND

Einrichtung zur UEberwachung von Prueflingen auf Betriebsstoerungen,insbesondere waehrend des Pruefbetriebes

UNIVERSALPRUEFGERAET FUER EINSPRITZANLAGEN

EQUIPMENT FOR USE IN THE TESTING OF MACHINES

... 1408680 Test apparatus FABBRICA ITALIANA MAGNETI MARELLI SpA 19 April 1973 [22 April 1972] 10913/73 Heading G4H Apparatus for recording vehicle test results on a card bearing a list of tests not all of which are relevant to every vehicle, comprises means for feeding the card past a printer so that only those positions in the list which are relevant to a particular vehicle being tested are presented to the printer for printing, and means for indicating each test as it is presented. The identity of each test in the list is recorded in machine readable code alongside the test name on the card: as the card is fed past the printer, the name is read by a TV camera and displayed on a screen while the code is sensed and relayed to a central processor. Information characterising the vehicle being tested, (e.g. its make), is preset using pushbuttons, the information being fed to the processor. An operator then presses a card feed (no printing) button and the card is moved to the position of the first ...

Method and apparatus for automotive and other testing

Public service vehicle automatic data monitoring and recording system

An automatic diagnostics system for vehicles particularly for public service vehicles including a plurality of electrical sensing devices (e.g. 4,5,10,11) on the vehicle to provide signals indicative of predetermined characteristics e.g. brake liner wear of selected components e.g. brakes of the vehicle, means including a multicore jack lead and interface means (25,26,27) to couple the outputs of the sensing devices (4,5,10,11) and stores connected to those sensors monitoring operation during running of the vehicle to a data processing unit at a depot for the vehicle, said data processing unit including data reading means responsive to the signals to produce signals indicative of the predetermined characteristics of the selected components and including storing means for storing the data and for recording the data received from the vehicle. ...

MONITORING SYSTEMS

Verfahren zur Emissionsoptimierung von Verbrennungskraftmaschinen

A method for optimizing internal combustion engines, in particular for optimizing emissions and/or consumption, in which, if appropriate, at least one of the secondary influencing variables is set by means of correction functions in their control units at each operating point, in such a way that in a defined cycle of operating points the emission limiting values are complied with, is to be improved in such a way that as many steps as possible can occur in an automated fashion from the measurement at the engine test bench to the formation of models, extending as far as the calibration of the control unit parameters. For this purpose, there is provision that in a first step a test plan for the operating points and secondary influencing variables is produced using mathematical models of the control unit functions and of the internal combustion engine with respect to the variable to be optimized, and is run on the test bench, wherein on the base of these models the optimum values of the secondary ...

VERFAHREN UND ANORDNUNG ZUR BESTIMMUNG EINES RAUCHBEGRENZUNGSKENNFELDES EINES VERBRENNUNGSMOTORS

Die Erstellung eines Rauchbegrenzungskennfeldes ist ein aufwendiger Vorgang, der hochqualifiziertes und hocherfahrenes Fachwissen erfordert. Um den Aufwand für die Erstellung zu reduzieren wird erfindungsgemäß vorgeschlagen, für eine Anzahl von Drehzahlen jeweils eine Anzahl von Lastsprüngen durchzuführen und dabei die Opazität 0 zu messen und mit einer Opazitätsgrenze 0limit zu vergleichen, wobei für jede Drehzahl n mit einem vorgegebenen minimalen Verbrennungsluftverhältnis min begonnen wird und jeder Lastsprung unter jeweiliger Erhöhung des jeweils letzten Verbrennungsluftverhältnisses um ein Verbrennungsluftverhältnisinkrement inc solange wiederholt wird, bis die gemessene Opazität 0 unter einer vorgegebenen Opazitätsgrenze 0limit liegt.

ANALYSESYSTEM, INSBESONDERS FÜR MECHANISCHE ODER VERBRENNUNGSKRAFTMASCHINEN SOWIE MOBIL-EINHEIT IN EINEM ANALYSESYSTEM

I.C. ENGINE CYLINDER POWER TESTING APPARATUS

ENGINE TEST AND DISPLAY APPARATUS

REMOTE SITE ENGINE TEST TECHNIQUES

Digital condition data corresponding to a plurality of engine operating conditions of an internal combustion engine are generated and stored in a memory system for visual display to an operator mechanic. Particular data from the memory are converted from a parallel digital format to a serial digital format for transmission to a remote site computer across telephone lines. The remote site computer analyzes the data and returns the diagnostic results for visual display to the operator mechanic.

METHOD AND APPARATUS FOR MONITORING THE CONDITION OF ELECTROMECHANICAL SYSTEMS

The present invention is concerned with a method, an apparatus and a computer program for monitoring the condition of electromechanical systems in which electrical rotating machinery is used and in which at least one electrical signal is measured during an operation of the electromechanical system. The inventive method comprising the steps of measuring current and/or voltage signals of an electromechanical system, measuring an angular position of a rotating shaft of interest of the electromechanical systems or estimating the value of discrete angular position of a rotating shaft of interest of the electromechanical system, synchronizing the current and/or voltage signals to the scaled angular displacement of the rotating shaft, dividing the synchronous electrical signals into intervals corresponding to each completed rotation of the rotating shaft, averaging a number of intervals of synchronous electrical signals to obtain an average synchronous electrical signal, extracting characteristic ...

Gerät zum Prüfen der Steuereinrichtung einer mit einer Einspritzanlage ausgerüsteten Brennkraftmaschine

DIAGNOSE UNIT FOR INTERNAL COMBUSTION ENGINES.

Improved monitoring of the wear of camps in a secondary act majority diesel engine.

Die Erfindung betrifft eine Vorrichtung und ein Verfahren zum Überwachen von Verschleiss eines Kreuzkopflagers, eines Kurbelzapfenlagers und eines Hauptlagers in einem Zweitakt-Grossdieselmotor. Die Vorrichtung umfasst mindestens zwei Sensoren, die so angeordnet und konfiguriert sind, dass sie ein Niveau eines unteren Totpunkts für den Kreuzkopf oder eine Gleitbacke in einem bestimmten Zylinder in Bezug auf einen festen Punkt des Motors messen. In einer Lernphase wird eine Tabelle mit Referenzwerten zur Kompensation von Motorbetriebsbedingungen erzeugt. Der Normalbetrieb umfasst folgende Schritte: Empfangen eines Signals von jedem Sensor; Kompensieren jedes Signals (420) mit einem Referenzwert in Abhängigkeit von der aktuellen Motorbetriebsbedingung; Bestimmen, ob ein Schwellenwert überschritten wurde (450), und, wenn dies der Fall ist, Ausgeben einer Anzeige der überschrittenen Schwelle.

УСТРОЙСТВО ОПРЕДЕЛЕНИЯ РАСХОДА ТОПЛИВА И ВРЕМЕНИ РАБОТЫ ДВИГАТЕЛЯ ВНУТРЕННЕГО СГОРАНИЯ

Изобретение относится к контрольно-измерительным средствам для учета расхода топлива двигателями внутреннего сгорания и времени их работы и может быть использовано, например, для более объективной оценки эксплуатационных показателей двигателей и выработки ресурса стартера в автоматизированных системах мониторинга транспорта. Заявленное в изобретении устройство отличается тем, что оно снабжено анализатором уровня напряжения питания бортовой сети объекта, на котором установлен двигатель, дополнительными счетчиками времени работы стартера двигателя, количества пусков двигателя и расхода топлива в режиме пуска и контроллером шины CAN для связи с внешними устройствами. Предлагаемое устройство, наряду с определением расхода топлива и времени работы двигателя на режимах холостого хода, номинальной работы и перегрузки, позволяет дополнительно определять время работы стартера двигателя, количество пусков двигателя, расход топлива в режиме пуска, интегрироваться в единую сеть обмена цифровой информацией ...

СПОСОБ ОПРЕДЕЛЕНИЯ ВРЕМЕНИ РАБОТЫ ДВИГАТЕЛЯ ВНУТРЕННЕГО СГОРАНИЯ И УСТРОЙСТВО ДЛЯ ЕГО ОСУЩЕСТВЛЕНИЯ

Изобретение относится к измерительной технике в области двигателестроения на двигателях транспортных средств для определения эксплуатационных показателей при эксплуатации, диагностировании, испытании, а также для определения времени работы двигателя при контроле сроков эксплуатации. Задачей изобретения является повышение точности измерения, объективности оценки ресурса, создание условий для получения не условных, а реальных данных, исключение несанкционированного изменения данных, упрощение устройства. Поставленная задача по способу определения времени работы ДВС решается тем, что регистрируют время работы датчика расхода топлива, при этом используют более чем один счетчик времени на различных режимах в зависимости от скорости расхода топлива, причем при изменении скорости расхода топлива переключают счетчик, соответствующий режиму, и выключают все счетчики при прекращении расхода топлива. Поставленная задача для устройства определения времени работы ДВС решается тем, что используется по ...

СПОСОБ ОПРЕДЕЛЕНИЯ ВРЕМЕНИ РАБОТЫ ДВИГАТЕЛЯ ВНУТРЕННЕГО СГОРАНИЯ И УСТРОЙСТВО ДЛЯ ЕГО ОСУЩЕСТВЛЕНИЯ

Изобретение относится к измерительной технике в области двигателестроения на двигателях транспортных средств для определения эксплуатационных показателей при эксплуатации, диагностировании, испытании, а также определения времени работы двигателя при контроле сроков эксплуатации. Задачей изобретения является повышение точности измерения, объективности оценки ресурса, создание условий для получения не условных, а реальных данных, исключение несанкционированного изменения данных, упрощение устройства. Поставленная задача по способу определения времени работы ДВС решается тем, что используется счетчик времени, который включают при начале работы датчика расхода топлива и выключают при окончании его работы. Поставленная задача для устройства определения времени работы ДВС решается тем, что используется по меньшей мере два счетчика времени для определения времени работы ДВС на различных режимах в зависимости от скорости расхода топлива. Имеются и другие отличия от прототипа.

СПОСІБ ВИЗНАЧЕННЯ ПОКАЗНИКА ФАКТИЧНОГО РЕЖИМУ РОБОТИ ПРОПУЛЬСИВНОГО КОМПЛЕКСУ СУДНА

Винахід належить до засобів технічної експлуатації суден. Спосіб визначення показника фактичного режиму роботи пропульсивного комплексу судна полягає в тому, що замірюють поточне значення погодинної витрати рідкого палива та частоти обертання вала дизеля. По відомих значеннях погодинної витрати палива і середнього ефективного тиску газів в точці номінального режиму дизеля та відомому значенню постійного коефіцієнта дизеля визначають поточне значення показника фактичного режиму роботи пропульсивного комплексу судна по певному співвідношенню. Технічним результатом є спрощення та підвищення точності підрахунку показника та можливість автоматизації такого підрахунку.

СПОСОБ ПРОГНОЗОВАНИЯ РЕСУРСА ДИЗЕЛЬНОГО ДВИГАТЕЛЯ

Способ прогнозирования ресурса дизельного двигателя. В способе, при заданном температурном режиме без внешней нагрузки, путем мгновенного включения максимальной подачи топлива разгоняют двигатель до максимальной угловой скорости вращения коленчатого вала, измеряют угловую скорость и ускорение вращения, определяют максимальную мощность и сравнивают полученный результат с установленным значением. Процесс диагностики выполняют в три этапа.

Fireproof test equipment for lubricating oil pump

A double-single paddle adjusting arrangement and bench test simulation device

Varactor bullet optics test device

A recording instrument for writing down marine automatically controlled diesel engine data

The utility model discloses a recording instrument for writing down marine automatically controlled diesel engine data, its characterized in that: the data record appearance include that engine ECU passes through CAN interface connection to controller, give the controller with engine speed, cooling water temperature, oil pressure, machine oil temperature, instantaneous oil consumption, the accumulative total oil consumption transfer in time of engine, the controller is processd the back to the information of gathering and is sent into the host computer through serial module. Since the above structure is adopted, the utility model discloses a modularized design scheme, compact structure, job stabilization, easy maintenance. Recording instrument integrated level for current is higher, dough stability stronger. Can also write down information such as the speed of a ship or plane, time, height above sea level, longitude and latitude when writing down marine automatically controlled diesel engine ...

Engineering machinery emission test system

Visual measuring device for flow analysis in cylinder

Valve actuating mechanism for marine diesel engine performance test signal acquisition device

Engine simulation load device and engine loading test system

Supercritical medium metering method and adjusting device

The invention discloses a supercritical medium metering method and an adjusting device, and the metering method comprises the steps: S1, obtaining the real-time state information of a metering medium, and judging the real-time state of the metering medium; s2, the volume flow of the metering medium is metered according to different real-time states of the metering medium; and S3, calculating the mass flow through the medium density rho, the medium temperature and the measured volume flow. The problem that an existing supercritical medium adjusting method is narrow in application range can be solved.

PROCESS AND DEVICE OF DETECTION Of a DISTURBED PHASE OF OPERATION Of an ENGINE HAVE LIGHTING ORDER SE TRANSLATING BY the PHENOMENON OF RATTLING

PROCEEDED OF DETECTION OF the STATE Of an INTERNAL COMBUSTION ENGINE.

PROCEEDED OF DIAGNOSIS OF FAILURE Of an ENGINE OVERFEEDS AND DRIVING OVERFEEDS

Combustion starting instant determining and adjusting method for e.g. oil engine of motor vehicle, involves shifting actual combustion starting instant towards set point starting instant when actual and set point instants are different

L'invention concerne un procédé pour déterminer et régler le début de combustion d'un cylindre d'un moteur de combustion interne comportant des étapes où l'on détermine l'instant réel de début de la combustion en mesurant sur un cycle moteur l'angle de rotation (θsoc) d'un vilebrequin (2) et la pression associée (P(θsoc)) dudit cylindre (1) relié audit vilebrequin (2) par l'intermédiaire d'une bielle (6) et d'un piston (5), où l'on compare l'instant réel de début de la combustion avec l'instant de début de la combustion consigne dudit cylindre (1), et où, si lesdits instants consignes et réel sont différents, on décale l'instant réel de début de combustion de façon à le rapprocher de l'instant de combustion consigne.

Method for detecting operating faults of a motor vehicle

L'invention concerne un procédé pour détecter des perturbations de fonctionnement d'un véhicule automobile, selon lequel des mots de données sont engendrés dans des composants (capteurs ou constituants) lors de la détection d'une perturbation de fonctionnement d'un composant; ces mots de données peuvent être lus par un dispositif 701 qui détermine, sur la base des perturbations de fonctionnement détectées par les composants et qui sont représentées par les mots de données correspondants, des chaînes d'action contenant toutes les sources d'erreurs ou de défauts; dans le dispositif 701 est établie une liste d'étapes de contrôle qui sont mémorisées dans des zones correspondantes d'une mémoire et à l'aide desquelles toutes les sources d'erreurs peuvent être contrôlées en relation avec une perturbation de fonctionnement, de telle sorte que, après exécution des étapes de contrôle, la chaîne d'action est complète ment vérifiée; le dispositif 701, comportant un visualiseur 705, est relié à un ordinateur ...

PROCESS Of ENDURANCE TEST Of an ELEMENT Of a LINE Of EXHAUST COMPRISING a MEANS Of INTRODUCTION Of a UREA SOLUTION

L'invention porte sur un procédé d'essai d'endurance d'un élément d'une ligne d'échappement d'un moteur (1) à combustion, la ligne comportant en amont de l'élément un moyen d'introduction d'une solution d'urée (4) pour la réduction catalytique sélective des oxydes d'azote, comportant les étapes successives suivantes : Etape a) : détermination de conditions de fonctionnement (CF), notamment les sollicitations thermiques et mécaniques subies par l'élément, représentatives d'une application donnée du moteur ; Etape b) : mesure au banc d'essai de l'encrassement (M) en masse de l'élément au cours d'un cycle prédéfini, en reproduisant parmi les conditions de fonctionnement (CF) celles qui ont un effet sensible sur l'encrassement de l'élément; Etape c) : détermination sur un banc d'essai de paramètres d'essai accéléré (PA) générant un encrassement (M) en masse identique à celui obtenu à l'étape b), en une durée prédéfinie (TA), plus courte que la durée du cycle prédéfini de l'étape b) ; Etape ...

MEASURE VALUE METHOD AND APPARATUS

METHOD FOR DETERMINING THE DOSE INJECTION OF AN INJECTOR SYSTEM FOR METERING FUEL TO AN INTERNAL COMBUSTION ENGINE FOR VEHICLE

Procédé pour déterminer une dose d'injection d'un injecteur (18) selon lequel le moteur à combustion interne (10) est couplé à une machine électrique (40) pour transmettre un couple. A l'arrêt du véhicule, le moteur (10) fonctionne à une certaine vitesse de rotation (n) prédéfinie et sous une charge prédéfinie et on détermine le courant (1) généré par la machine électrique (40), et à partir de l'intensité du courant (1) généré par la machine électrique (40) on fixe la dose d'injection (m) de l'injecteur (18).

VOICE OUTPUTTING SELF-DIAGNOSIS DEVICE FOR COMPARING, DIAGNOSING, PREPARING AND REPAIRING USING DETECTING DATA

PURPOSE: A voice outputting self-diagnosis device is provided to be removably fixed to a vehicle and to output voices for informing a driver of a trouble by comparing the detected values of sensors and by deciding a trouble possibility and existent troubles. CONSTITUTION: Upon generating troubles in components or sensors, the value is input to a control unit such as an ECU(20), TCU(21), an ABS ECU(22) and an additional ECU(23). Then, the control unit decides if there are troubles and stores the result. A controller(40) receives sensing signals through sensors and compares the sensing signals each other to correctly compare and decide the troubles in the components and the sensors. COPYRIGHT 2000 KIPO ...

ANORDNING FOR INGAENDE UNDERSOKNING AV FORBRENNINGSMOTORER UNDER DRIFT

Diagnos av förbränningsmotor

SINGLE-HAND HELD DIAGNOSTIC DISPLAY UNIT

A vehicle diagnostic display unit (100) is provided for performing diagnostic procedures on a vehicle using only one hand. The vehicle diagnostic display unit (100) includes a case (110), a display screen (112), a main support (114), and plurality of keys (116, 122). The case has a front portion (126), a rear portion (128), a top portion (130), and a bottom portion (132). The display screen (112) is disposed within the front portion (126), and the main support (114) is coupled to a side of the case. The main support (114) is configured such that a user can simultaneously lift and operate the diagnostic display unit (100) with a single hand.

Heat generation rate waveform calculation device of internal combustion engine and method for calculating heat generation rate waveform

A combustion speed, for example, is estimated or evaluated, with a required accuracy, more simply than the conventional art, while reducing man-hours to produce a heat generation rate waveform of an internal combustion engine. An increase rate of a heat generation rate relative to a change in a crank angle in a heat generation rate increasing period (e.g., a first-half combustion period a) in which the heat generation rate increases after ignition of an air-fuel mixture is defined as a heat generation rate gradient b/a that is one of characteristic values of the heat generation rate waveform. The heat generation rate gradient is estimated based on a fuel density (e.g., fuel density ρfuel@dQpeak at heat generation rate maximum time) at a predetermined time set in advance in the heat generation rate increasing period so as to produce the heat generation rate waveform using the estimated heat generation rate gradient.

Diagnosis of engine power and compression balance

This disclosure relates to a system for analyzing the performance of a reciprocating piston, internal combustion engine such as a diesel engine. Sensors are connected to the engine, which respond to various operating parameters, and signals representing the parameters are transmitted to computer processing equipment. A speed sensor responds to the movement of an engine part such as the teeth of the engine fly-wheel ring gear, and the processor calculates a function representing the change in the instantaneous engine kinetic energy. The kinetic energy change data are accumulated during an engine acceleration run and again during a deceleration run. The signals from an engine cycle event sensor are processed to indicate the firing intervals of the cylinders and thereby to correlate the engine acceleration and deceleration data. The changes in kinetic energy during the cylinder firing intervals are measured during engine acceleration, and the kinetic energy changes are again measured during ...

Vehicle diagnostic tool—multiple test II

An analysis tool which extracts all the available parameter identifications (i.e. PIDS) from a vehicle's power train control module for diagnostic decisions. This is done by checking these PIDS and other information (e.g., calculated PIDS, Break Points, charts and algorithms) in three states; key on engine off, key on engine cranking, key on engine running. In all three modes the tool is comparing the live data from PIDS and voltage to the other information (e.g., Break Points). If any of this data are outside the programmed values a flag is assigned to the failure or control problem. The relationship between a particular PID and its associated preprogrammed value(s) may be indicated by a light. The depth of the problem (if any) is conveyed by the color of the light. Also included are tests/charts for fuel trim, engine volumetric efficiency, simulated injector, power, catalyst efficiency, and engine coolant range.

Diagnostic apparatus and test method for testing the power, braking, exhaust gas or function of a motor vehicle by means of a motor vehicle test bench

Die Erfindung betrifft ein Prüfverfahren zur Leistungs-, Bremsen-, Abgas-, Sicherheits- oder Funktionsprüfung eines Kraftfahrzeugs mittels eines Kraftfahrzeugprüfstands. Die Erfindung betrifft weiterhin eine Schnittstellenvorrichtung, über die auf den Prüfstand mittels eines standardisierten Datenformats zugegriffen werden kann. Das Prüfverfahren umfasst das Bereitstellen einer Schnittstelle (13), die eine bidirektionale Datenkommunikation zwischen einem ersten Steuermittel (8) des Kraftfahrzeugprüfstands (7) und einem zweiten Steuermittel (11) einer Diagnosevorrichtung (10) für ein Kraftfahrzeug ermöglicht, wobei die Diagnosevorrichtung (10) über eine Diagnoseschnittstelle (3) des Kraftfahrzeugs (1) mit einer elektronischen Steuervorrichtung (2) des Kraftfahrzeugs kommuniziert; das Empfangen eines Steuerbefehls und/oder einer Prüfabfrage für den Kraftfahrzeugprüfstand (7) von dem zweiten Steuermittel (11) über die Schnittstelle (13) und Ausgeben eines durch den Kraftfahrzeugprüfstand ( ...

SENSOR ELEMENT WITH AN ACOUSTIC EMISSION SENSOR

METHOD FOR DETECTING FUNCTION FAULT OF CAR

PURPOSE: To find a defective element with accuracy as match as possible by providing devices with a function chain comprising any disorder source possible to be a cause of disorder for function fault, for finding. CONSTITUTION: It is inspected far finding a parts or a sensor (element) with which the latest performance was done and after which a function fault occurred, and if no function fault is detected, or a car 702 is normal, an inspection completed. A function fault, far example, detected with an element is characterized by data, and the inspection is perform. The data with element is read by a device 701 and then evaluated. A list at an inspection stage is, at the device 701, generated from the information present in the car 702. When the list at inspection stage is performed, if at least one function fault is detected, finding of a function fault is performed. Then, with an appropriate display, an identified function fault is removed. COPYRIGHT: (C)1993,JPO ...

АНАЛИЗАТОР РАБОТЫ СИСТЕМ ДВИГАТЕЛЯ ВНУТРЕННЕГО СГОРАНИЯ

Изобретение относится к устройствам для измерения параметров систем двигателя внутреннего сгорания и может быть использовано для диагностирования двигателей внутреннего сгорания. Технический результат направлен на расширение числа диагностируемых параметров систем двигателя. Технический результат достигается тем, что в анализатор работы систем двигателя внутреннего сгорания дополнительно введены трансформатор с двумя вторичными обмотками и осциллографическое устройство, причем первичная обмотка трансформатора соединена с выходом генератора синусоидального напряжения, одна вторичная обмотка соединена с входами обмотки возбуждения диагностируемого генератора, а вторая - с входом развертки осциллографического устройства, сигнальный вход осциллографического устройства соединен с выходом диагностируемого генератора. 3 ил.

Способ и система контроля параметров технического состояния двигателя внутреннего сгорания

Изобретение относится к методам контроля поршневых двигателей внутреннего сгорания в эксплуатационных условиях и может быть использовано как для предварительной диагностики технического состояния ДВС на этапах эксплуатации, так и при техническом обслуживании автотранспортных средств. Способ контроля параметров технического состояния двигателя внутреннего сгорания заключается в том, что измеряют показания датчиков двигателя внутреннего сгорания, а также динамометра, причем динамометр устанавливают на маховике двигателя, после чего сравнивают при помощи диагностического блока измеренные показания с нормативными и на основании этого осуществляют контроль технического состояния двигателя внутреннего сгорания. Также представлена система для контроля параметров технического состояния двигателя внутреннего сгорания. Техническим результатом, обеспечиваемым приведенной совокупностью признаков, является осуществление оперативного контроля параметров технического состояния двигателя автотранспортного ...

Способ диагностики системы топливоподачи и контура низкого давления инжекторных ДВС

Изобретение относится к области диагностики топливных систем двигателей внутреннего сгорания (ДВС). Предложен способ диагностики системы топливоподачи (СТП) инжекторных ДВС, включающий в себя измерение таких текущих значений диагностических параметров, как текущее давление и производительность топлива в СТП систем дискретного и непрерывного впрыска топлива во впускной тракт, а также текущее давление и производительность топлива в контуре низкого давления (КНД) системы непосредственного впрыска топлива и подачи входящих в СТП и КНД электрических топливных насосов низкого давления, определение расчётных значений указанных параметров в функции от номинальной мощности ДВС, температуры топлива и температуры воздуха на впуске, сопоставление расчётных значений с измеренными текущими значениями и определение технического диагноза СТП и КНД. Изобретение позволяет производить диагностику всех типов систем топливоподачи (СТП) и контуров низкого давления (КНД) инжекторных ДВС при отсутствии нормативных ...

Автоматизированная установка для испытания топлив и масел при различных режимах эксплуатации двигателя

Изобретение относится к способам испытаний топлив и масел на моторных установках с использованием теплообменников как на линиях подачи масла, так и охлаждающей жидкости и может быть использовано в автоматизированных системах управления технологическими процессами оценки качеств топлив и масел, как создаваемых новых, так и модернизируемых для конкретных двигателей. Автоматизированная установка для испытания топлив и масел при различных режимах эксплуатации двигателя, содержащая двигатель 1 с системой смазки 2 и рубашкой 3 охлаждения, блок управления 15, при этом установка дополнительно содержит в системе смазки двигателя водомасляный теплообменник 19 закрытого типа, датчик температуры масла 21 и запорный клапан 23. Для создания стабильной топливовоздушной смеси заданного состава предусмотрен модуль 18, связанный с камерой сгорания двигателя через впускной патрубок 26 подачи воздуха в одноцилиндровый двигатель 1. В модуле 18 установлено демпфирующее устройство 27, связанное с источником воздуха ...

СПОСОБ ДИАГНОСТИРОВАНИЯ СОСТОЯНИЯ ДИЗЕЛЯ ЛОКОМОТИВА

Изобретение может быть использовано при диагностировании технического состояния двигателей внутреннего сгорания. Диагностирование проводят в процессе эксплуатации дизеля. Способ заключается в измерении перепада давления на масляном фильтре грубой очистки (ФГО), определении степени его загрязнения и определении степени износа подшипников коленчатого вала дизеля (ПКВД). Степень загрязнения ФГО определяют путем сравнения измеренного перепада давления с заданным порогом, в качестве которого принимают перепад давления на ФГО нового дизеля с незагрязненным фильтром. В случае превышения измеренной величины перепада давления заданного порога формируют сообщение о загрязненном состоянии ФГО. Определение степени износа ПКВД осуществляют при отсутствии превышения заданного порога перепада давления на ФГО, для чего производят серию не менее чем трех замеров перепада давления на ФГО на различных частотах вращения коленчатого вала дизеля по формуле:I=100(k-k)/(k-k), %, где I - степень износа подшипников ...

Устройство для диагностирования бензиновых двигателей внутреннего сгорания путем отключения топливных форсунок

Полезная модель относится к области эксплуатации машин и может осуществлять полуавтоматизированную диагностику бензиновых двигателей внутреннего сгорания (ДВС) с инжекторной подачей топлива. Техническим результатом является обеспечение простоты диагностирования неисправностей ДВС в автоматическом режиме. Устройство для диагностирования бензиновых двигателей внутреннего сгорания путем отключения топливных форсунок содержит электронное устройство с электрическими проводами, разъемами и ручками управления для полного или частичного отключения электромагнитных форсунок. Устройство выполнено на базе микроконтроллера с управляющей программой, который электрически соединен с преобразователем напряжения для подачи питания от аккумуляторных батарей, на вход микроконтроллера присоединены нагрузочные проволочные резисторы, микросхема буфер, на которые подключен электрический разъем для подключения в разрыв косы топливных форсунок электронного блока управления. Устройство размещено в корпусе, на верхней ...

Способ автоматизированной диагностики износа и прогнозирования ресурса ДВС

Предложен не требующий специального дорогостоящего оборудования способ автоматизированной диагностики износа и прогнозирования ресурса автомобильного ДВС посредством компьютерной программы «Тестер прогнозируемого ресурса Resource Predict Tester» (RPT), учитывающей нелинейности распределения давлений в системе смазки ДВС. В текстовых полях программы указывают исходные данные и давление масла в системе смазки диагностируемого ДВС. В результате расчета программой RPT автоматически получают технический диагноз ДВС, который включает оценку технического состояния ДВС, значение зазора подшипника кривошипно-шатунного механизма, оценку качества сборки или эксплуатации ДВС, пробег и прогнозируемый пробег до очередного капитального ремонта в километрах, износ и прогнозируемый ресурс в процентах, оценку характера трения в подшипниках. Способ обеспечивает простоту, высокую скорость и низкую себестоимость диагностики, достоверность диагноза. 35 ил.

Способ и система контроля параметров технического состояния двигателя внутреннего сгорания

Изобретение относится к методам контроля поршневых двигателей внутреннего сгорания в эксплуатационных условиях и может быть использовано как для предварительной диагностики технического состояния ДВС на этапах эксплуатации, так и при техническом обслуживании автотранспортных средств. Способ контроля параметров технического состояния двигателя внутреннего сгорания заключается в том, что измеряют показания датчиков двигателя внутреннего сгорания, а также динамометра, причем динамометр устанавливают на маховике двигателя, после чего сравнивают при помощи диагностического блока измеренные показания с нормативными и на основании этого осуществляют контроль технического состояния двигателя внутреннего сгорания. Также представлена система для контроля параметров технического состояния двигателя внутреннего сгорания. Техническим результатом, обеспечиваемым приведенной совокупностью признаков, является осуществление оперативного контроля параметров технического состояния двигателя автотранспортного ...

СПОСОБ ОБНАРУЖЕНИЯ ПРИМЕСИ БИОДИЗЕЛЬНОГО ТОПЛИВА НА ОСНОВАНИИ ОЦЕНКИ ОТНОСИТЕЛЬНОГО СООТНОШЕНИЯ ВОЗДУХА И ТОПЛИВА

... 1. Способ для обнаружения примеси биодизельного топлива в двигателе внутреннего сгорания, включающий, по меньшей мере, следующие этапы, на которых: ! производят первую оценку относительного соотношения воздуха и топлива (RAFR) с помощью, по меньшей мере, первого датчика, выходные данные которого отражают фактическое значение RAFR; ! производят вторую оценку относительного соотношения воздуха и топлива (RAFR) с помощью электронного блока управления (ЭБУ) двигателя, причем оценку выполняют посредством измерения стехиометрического соотношения воздуха и топлива (A/F)ST для нефтедизельного топлива, массового расхода воздуха (MAF) и количества впрыскиваемого топлива (Qfuel); и ! определяют расхождение между значениями, полученными в результате первой и второй оценок. ! 2. Способ по п.1, при котором дополнительно используют предварительно вычисленный набор взаимосвязей значений между расхождением значений и процентным содержанием биодизельного топлива по отношению к нефтедизельному топливу, чтобы ...

СПОСОБ ДЛЯ КОМПЛЕКСНОГО И ПОЭЛЕМЕНТНОГО ДИАГНОСТИРОВАНИЯ ДВИГАТЕЛЕЙ ВНУТРЕННЕГО СГОРАНИЯ И УСТАНОВКА ДЛЯ ЕГО ОСУЩЕСТВЛЕНИЯ

... 1. Способ комплексного и поэлементного диагностирования двигателей внутреннего сгорания (ДВС), осуществляемый путем контроля частоты вращения коленчатого вала двигателя при отключении части цилиндров и одновременном воздействии на топливоподачу, неисправные элементы локализируют созданием равновесия между индикаторной мощностью и мощностью механических потерь при фиксированном положении органов управления подачей топлива и частоте вращения коленчатого вала, соответствующей режиму диагностирования, обеспечивая равновесие подбором комбинации отключения целого числа цилиндров и различной степени отключения одного из цилиндров, после чего на диагностируемый элемент производят тестовое воздействие и по степени нарушения установленного равновесия, которую оценивают по уменьшению частоты вращения, определяют техническое состояние диагностируемого элемента, отличающийся тем, что диагностирование осуществляют как в неподвижном состоянии, так и в процессе движения из салона транспортного средства ...

АНАЛИЗАТОР РАБОТЫ СИСТЕМЫ ДВИГАТЕЛЯ ВНУТРЕННЕГО СГОРАНИЯ

Анализатор работы системы двигателя внутреннего сгорания, содержащий детектор тока стартера, генератор импульсов момента зажигания, компаратор, умножитель частоты, блок совпадения, индикатор среднего значения тока, инвертор, пиковые детекторы минимального и максимального значений амплитуды тока стартера и индикатор разности напряжений, вольтметр постоянного тока, амперметр с датчиком тока, второй, третий датчики тока, усилитель-формирователь, первый и второй счетчики, схему выборки-хранения, запоминающие конденсаторы, индикатор состояния свечей зажигания и ключ управления, причем первый выход детектора тока стартера прямо и через инвертор и первый и второй выходы генератора импульсов момента зажигания соединены со входами компаратора, умножитель частоты включен между вторым выходом детектора тока стартера и входом блока совпадения, другой вход которого соединен с выходом компаратора, пиковые детекторы включены между вторым выходом детектора тока стартера и индикатором разности напряжений ...

СПОСОБ ТЕХНИЧЕСКОГО ДИАГНОСТИРОВАНИЯ ФИЛЬТРА ТОНКОЙ ОЧИСТКИ ТОПЛИВНОЙ СИСТЕМЫ ДИЗЕЛЯ

Изобретение может быть использовано в процессе определения технического состояния топливного фильтра (Ф) тонкой очистки дизеля. Способ заключается в измерении давления топлива в двух точках топливной системы дизеля, первое из давлений PТН измеряется на входе в Ф тонкой очистки топлива, второе давление PТД - на выходе из Ф. Производят серию не менее чем трех замеров на различных частотах вращения коленчатого вала дизеля. Обрабатывают результаты измерений, по результатам которых оценивают состояние Ф, планируют проведение регламентных работ. Технический результат заключается в упрощении диагностирования состояния Ф за счет применения минимального количества датчиков и снижение трудоемкости обслуживания за счет определения степени загрязнения Ф в процессе эксплуатации и планирования регламентных работ. 1 ил.

Способ испытания двигателя внутреннего сгорания

Способ регулирования внутрицилиндровых параметров двигателя внутреннего сгорания

Способ оценки технического состояния поршневого двигателя внутреннего сгорания

Устройство регистрации режимов работы двигателя

Изобретение относится к области испытаний двигателей внутреннего сгорания. Целью изобретения является повышение точности измерений и оценки эффективности старт-стоп системы путем измерения длительности режимов работы двигателя внутреннего сгорания. При автоматическом отключении двигателя стоп-старт системой импульсный сигнал с первого управляемого генератора 4 через элемент 3 ИЛИ подается на счетньй вход реверсивного счетчика 2. Частота генератора 4 выбирается такой, чтобы количество импьшьсов на счетчике 2 было пропорционально количеству топлива , которое потреблял бы двигатель , если бы он не был отключен. При запуске двигателя вступает в работу второй управляемый генератор 5, частота которого выбирается такой, чтобы количество импульсов, генерируемых им, было пропорционально количеству топлива, необходимого для возмещения затрат электрической энергии аккумуляторной батареи, израсходованных при запуске двигателя . Генератор 4 устанавливается в режим отсутствия генерации, а счетчик 2 - ...

Способ регистрации параметров быстротекущего процесса в двигателе внутреннего сгорания

Изобретение относится к двигателестроению , в частности к двигателям внутреннего сгорания. Целью изобг ретения является уьсеньшение потерь информации при испытаниях и диагностике двигателей путем повышения частоты регистрации параметров исследуемого процесса. Способ заключается в том, что измеряют сигналы синхронизации/ например углы вала, и сигналы процесса. Регистрируют сигналы синхронизации в ЭВМ при максимальной частоте синхронизации внутренней логики ЭВМ. Суммируют сигналы процесса и синхронизации и регистрируют в ЭВМ суммарный сигнал с максимально возможной частотой синхронизации BH tренней логики ЭВМ, вычитают из сум- t марного сигнала сигнал синхрониза (Л С ции и заносят в долговременное запоминающее устройство. 4 ил.

Устройство для регулирования скорости

Устройство для контроля параметров автомобильного двигателя внутреннего сгорания

Verfahren zur Optimierung von Kennfeldern

Es wird ein Verfahren zur Optimierung von Kennfeldern zur Steuerung einer Brennkraftmaschine (2) vorgeschlagen, bei dem zunächst ein Modell der Brennkraftmaschine (2) durch Messung an der Brennkraftmaschine (2) gebildet wird. Dabei wird eine Abhängigkeit von Ausgangsgrößen (13) der Brennkraftmaschine (2) von den Kennfeldern dargestellt. Bei der Optimierung wird gleichzeitig die Abhängigkeit der Ausgangsgrößen (13) der Brennkraftmaschine von den Kennfeldern und die Glättung der Kennfelder optimiert.

Modulares drahtloses Diagnose-, Test- und Informationssystem

Verfahren zur Entwicklung eines Verbrennungsmotors

Zur Beurteilung der Einhaltung von RDE-Schadstoff-Grenzwerten (E) eines Verbrennungsmotors (2) ist vorgesehen, dass aus Häufigkeitsverteilungen (4, 5) von Referenz-Betriebspunkten (P) und -änderungen (P) und stationären Prüfstands-Messungen des Verbrennungsmotors (2) ein stationärer Erfüllungsgrad (EG) eines Emissionsgrenzwerts (E) ermittelt wird, dass aus transienten Prüfstands-Messungen der Betriebspunktänderungen (P) Schadstoff-kritische Betriebspunktänderungen (P) ermittelt werden, dass aus Schadstoff-Emissionen (E) eines Prüfzyklus' (Z) und quasistationären Schadstoff-Emissionen (E) eines quasistationären Prüfzyklus' (Z) ein dynamischer Erfüllungsgrad (EG) ermittelt wird, dass Prüfstands-Prüfläufe (P) mit verschiedenen virtuellen Fahrern (D), verschiedenen virtuellen Fahrzeugen (F), verschiedenen virtuellen Umgebungen (U) unter Messung der Schadstoff-Emissionen (E) durchgeführt werden und daraus ein Robustheits-Erfüllungsgrad (EG) ermittelt wird, dass daraus ein Repräsentativprüflauf ...

Zylinderabgasrückführungsverteilungsmesssysteme und -verfahren

Verfahren und Systeme zum Messen der Abgasrückführungs(AGR)-Verteilung zwischen individuellen Motorzylindern werden bereitgestellt. In einem Beispiel kann ein Verfahren Fluidkoppeln einer Vielzahl von Ansaugrohren eines Motors an eine Vakuumpumpe, Umleiten eines Teils eines Ansaugladegases von dem Ansaugrohr zu einem Gaszusammensetzungssensor mit der Vakuumpumpe, Messen einer Sauerstoffkonzentration des umgeleiteten Ansaugladeteils mit dem Gaszusammensetzungssensor und Schätzen einer AGR-Konzentration der Ansaugladung auf der Grundlage der gemessenen Sauerstoffkonzentration beinhalten.

Анализатор работы систем двигателя внутреннего сгорания

Анализатор работы систем двигателя внутреннего сгорания, содержащий детектор тока стартера, генератор импульсов момента зажигания, компаратор, умножитель частоты тока стартера, блок совпадения с двумя входами, индикатор среднего значения тока, инвертор, пиковые детекторы максимального и минимального значений амплитуды тока стартера, индикатор разности напряжений, вольтметр постоянного тока и амперметр с датчиком тока, причем первый выход детектора тока стартера прямо и через инвертор и первый и второй выходы генератора импульсов момента зажигания соединены со входами компаратора, умножитель частоты включен между вторым выходом детектора тока стартера и входом блока совпадения, другой вход которого соединен с выходом компаратора, пиковые детекторы включены между вторым выходом детектора тока стартера и индикатором разности напряжений, а индикатор среднего значения тока подключен к третьим выходам детектора тока стартера и генератора импульсов момента зажигания, вольтметр постоянного тока подключен параллельно входу детектора тока стартера, а датчик тока устанавливается на провод, соединяющий плюсовой вывод батареи со стартером двигателя, обхватывая провод своими зажимами, интегратор с датчиком напряжения и двумя входами: суммирующим и вычитающим, вольтметр, включенный параллельно выходу интегратора, реле времени с двумя парами контактов и контрольной лампой, а нагрузка входного транзистора генератора импульсов момента зажигания выполнена на двух последовательных резисторах, причем датчик напряжения устанавливается на высоковольтный провод катушки зажигания, обхватывая его своими зажимами, а его вых РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 160 734 U1 (51) МПК G01M 15/05 (2006.01) F02P 17/00 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ТИТУЛЬНЫЙ (21)(22) Заявка: ЛИСТ ОПИСАНИЯ ПОЛЕЗНОЙ МОДЕЛИ К ПАТЕНТУ 2015146376/06, 27.10.2015 (24) Дата начала отсчета срока действия патента: 27.10.2015 (45) Опубликовано: 27.03.2016 Бюл. № 9 Адрес для переписки: ...

Air-fuel ratio control system for internal combustion engine

An air-fuel ratio control system for an internal combustion engine has a perturbation control which oscillates the air-fuel ratio with a first frequency. A first difference signal is generated indicative of a difference between a present value and a first past value from an air-fuel ratio sensor detected at a timing of a first specific period which is set to reduce a specific frequency component corresponding to a specific frequency different from the first frequency. A first frequency component is extracted. A second difference signal is generated indicative of a difference between a present value and a second past value detected at a timing of a second specific period which is set to reduce the first frequency component. The specific frequency component is extracted. A failure of the control system is determined by a relationship between intensities of the first frequency component and the specific frequency component.

INTERNAL COMBUSTION ENGINE DIAGNOSTIC DEVICE AND INTERNAL COMBUSTION ENGINE DIAGNOSTIC METHOD

An internal combustion engine diagnostic device and an internal combustion engine diagnostic method identify an abnormal cylinder having an abnormal air-fuel ratio among a plurality of cylinders during the operation of an internal combustion engine. The internal combustion engine diagnostic device comprises: an air-fuel ratio control unit for changing the air-fuel ratio in a stepwise manner by controlling a fuel injection amount adjusting means that adjusts the fuel injection amount of each of the plurality of cylinders; and an abnormal cylinder identification unit for identifying an abnormal cylinder on the basis of the relationship between each air-fuel ratio changed in a stepwise manner and the number of misfires occurring in the plurality of cylinders, the number being counted by a misfire counter for each air-fuel ratio changed in a stepwise manner. 1. An internal combustion engine diagnosing apparatus for identifying a malfunctioning cylinder having an abnormal air-fuel ratio among a plurality of cylinders of an internal combustion engine while the internal combustion engine is in operation , comprising:an air-fuel ratio controller for controlling the respective cylinders such that an air-fuel ratio of one of the cylinders in operation is changed stepwise with one cylinder at a time, by controlling a fuel injection quantity adjusting unit for adjusting respective fuel injection quantities of the cylinders; anda malfunctioning cylinder identifier for identifying the malfunctioning cylinder based on a relationship between the respective numbers of misfires of the cylinders which are counted by a misfire counter with respect to each of the air-fuel ratios which are changed stepwise, and the air-fuel ratios which are changed stepwise.2. The internal combustion engine diagnosing apparatus according to claim 1 , wherein the air-fuel ratio controller controls the fuel injection quantity adjusting unit to adjust the fuel injection quantities of the cylinders ...

MULTI-MODAL FLUID CONDITION SENSOR PLATFORM AND SYSTEM THEREFOR

This invention encompasses embodiments for multi-modal integrated simultaneous measurement of various aspects of fluids contained in circulating systems such as automotive reciprocating engines and vehicle transmissions. These circulating systems perform constant internal lubrication, and heat and contaminant removal to protect the internal moving parts from the inherent friction and damage in normal operation. Most commonly this is achieved with fluids based on hydrocarbon and/or related synthetics, which, over time, can lose their protective properties, and vary in their performance or breakdown/decay due to internal and external events. Several components within the lubricant fluid can be measured and can provide insight into the efficacy of the system to perform its designed mission. Described herein is a real-time, simultaneous, integrated, multi-modal sensor system for early warning notification that can be further enhanced using specifically designed nanoparticles that can be introduced into the system, engineered to specifically bind with the contaminants and/or undergo an irreversible state change upon certain experienced conditions to both increase the detectability as well as provide for a framework to improve filter performance. 126-. (canceled)27. An integrated system for continuous monitoring of multiple properties of a fluid derived from measurements from a plurality of sensor modalities within a fluid-based closed-system environment.28. The integrated system of claim 27 , wherein said system is an in-motor lubrication monitoring system.29. The integrated system of claim 27 , wherein said monitoring is real-time.30. The integrated system of claim 27 , built into the form factor of a standard size and shaped oil plug element found within a reciprocating engine oil drain plug claim 27 , wherein said system is remotely located from a display and processing unit by wired or wireless data telemetry.31. The integrated system of claim 27 , additionally ...

PRESSURE REGULATING VALVE

Proposed is a pressure regulating valve () for opening and closing an outlet of a high-pressure accumulator () for an injection device for internal combustion engines. The pressure regulating valve () has a valve element () which can be actuated by a magnet actuator (). The magnet actuator () acts, by means of an armature (), on a closing element () which closes off or opens up a hydraulic connection from the high-pressure accumulator () to a valve chamber (), wherein the valve chamber () is hydraulically connected to a low-pressure port (). The armature () has an armature plate () and an armature pin (), wherein the armature plate () is arranged in a movable manner in an armature chamber (). The armature chamber () is hydraulically connected via a return connection () to the valve chamber (). 112181731291226313233203244261544265050332644. A pressure regulating valve for opening and closing an outlet of a high-pressure accumulator () for a fuel injection device for an internal combustion engine , the pressure regulating valve comprising a valve element () which is actuable by a magnetic actuator () acting with an armature () on a closing element () which closes or opens a hydraulic connection from the high-pressure accumulator () to a valve chamber () , the armature () comprising an armature plate () and an armature pin () which is guided in an axially movable manner in a valve housing () , the armature plate () being arranged movably in an armature chamber () , the valve chamber () being connected hydraulically to a low-pressure port () and the armature chamber () being connected hydraulically to the valve chamber () via a return connection () , characterized in that the return connection () is implemented as a connecting bore formed in the armature pin () between the valve chamber () and the armature chamber ().2. (canceled)35152. The pressure regulating valve as claimed in claim 1 , characterized in that the connecting bore is implemented as a blind bore () and a ...

ESTIMATION DEVICE FOR CYLINDER INTAKE AIR AMOUNT AND INTERNAL EGR RATE IN INTERNAL COMBUSTION ENGINE

An estimation device for a cylinder intake air amount and an internal EGR rate in an internal combustion engine is provided which is capable of making an estimation with a high degree of accuracy in a small number of adaptation constants. The estimation device calculates a volumetric efficiency corresponding value and the internal EGR rate based on an exhaust efficiency (a linear function of intake pipe internal pressure) which is an index indicating an amount of residual gas which is an exhaust gas after combustion remaining in the cylinder without being discharged from the cylinder to an exhaust pipe, and an intake efficiency (a linear function of intake pipe internal pressure) which is an index indicating an amount of air coming into the cylinder from the intake pipe excluding the residual gas. 1. An estimation device for a cylinder intake air amount and an internal EGR rate in an internal combustion engine , which serves for estimating an amount of intake air sucked into a cylinder and an internal EGR rate in the internal combustion engine which is connected to an intake pipe at a location downstream of a throttle valve , said estimation device comprising:a volumetric efficiency corresponding value calculation unit that calculates a volumetric efficiency corresponding value which is an index indicating an amount of air coming into said cylinder from said intake pipe;a cylinder intake air amount estimation unit that estimates an amount of air actually sucked into said cylinder by using said volumetric efficiency corresponding value; andan internal EGR rate estimation unit that estimates the internal EGR rate based on an internal variable for calculating said volumetric efficiency corresponding value;wherein said volumetric efficiency corresponding value calculation unit calculates said volumetric efficiency corresponding value based on an exhaust efficiency, which is an index indicating an amount of residual gas which remains in said cylinder with the exhaust gas ...

METHOD FOR RECOGNISING IRREGULAR COMBUSTION PROCESSES IN AN INTERNAL COMBUSTION ENGINE

A method for recognizing irregular combustion in an internal combustion engine includes supplying fuel directly to a combustion chamber of a cylinder of the internal combustion engine using an injector. The injector is connected to a fuel supply line that includes a pressure sensor configured to measure pressure in the fuel supply line. The pressure in the fuel supply line is measured during the supply of fuel into the combustion chamber. It is then ascertaining whether irregular combustion is occurring based on the measured pressure in the fuel supply line. 19-. (canceled)10. A method for recognizing irregular combustion in an internal combustion engine , the method comprising:supplying fuel directly to a combustion chamber of a cylinder of the internal combustion engine using an injector, the injector being connected to a fuel supply line that includes a pressure sensor configured to measure pressure in the fuel supply line;measuring pressure in the fuel supply line during a supply of fuel into the combustion chamber;ascertaining whether irregular combustion is occurring based on the measured pressure in the fuel supply line.11. The method recited in claim 10 , wherein irregular combustion is recognized as occurring depending upon a pressure drop in the fuel supply line which occurs upon supply of fuel into the combustion chamber.12. The method recited in claim 11 , wherein irregular combustion is recognized as occurring depending upon the pressure drop occurring in the fuel supply line upon successive combustion cycles during supply of fuel into the combustion chamber.13. The method recited in claim 12 , wherein irregular combustion is recognized as occurring if the pressure drop in the current combustion cycle is smaller by a certain value than in the combustion cycle before it.14. The method recited in claim 10 , wherein the supply of fuel into the combustion chamber using the injector takes place in a plurality of partial quantities in order to set a certain ...

COMBUSTION STATE CONTROL DEVICE FOR VEHICULAR INTERNAL COMBUSTION ENGINE

A combustion state control device for an internal combustion engine includes an abnormal combustion detecting unit for detecting abnormal combustion of the internal combustion engine, a fuel supply cut-off unit for cutting off a fuel supply to a cylinder where the abnormal combustion is detected during a cycle from an intake stroke of the cylinder to a next intake stroke thereof, when the abnormal combustion detecting unit detects the abnormal combustion of a cylinder, a vehicle vibration detecting unit for detecting vibration of a vehicle, and a fuel supply cut-off ending unit for ending cutting off of the fuel supply when the vehicle vibration detecting unit detects the vibration of the vehicle while the fuel supply is being cut off. 1. A combustion state control device for a vehicular internal combustion engine that cuts off a fuel supply to a cylinder of the vehicular internal combustion engine , when detecting abnormal combustion of the vehicular internal combustion engine , the combustion state control device comprising:an abnormal combustion detecting unit for detecting the abnormal combustion of the vehicular internal combustion engine;a fuel supply cut-off unit for cutting off a fuel supply to the cylinder where the abnormal combustion is detected, during a cycle from an intake stroke of the cylinder to a next intake stroke of the cylinder, when the abnormal combustion detecting unit detects the abnormal combustion;a vibration detecting unit for detecting vibration of a vehicle; anda fuel supply cut-off ending unit for ending cutting of the fuel supply when the vibration detecting unit detects the vibration of the vehicle while the fuel supply is being cut off.2. The combustion state control device for the vehicular internal combustion engine according to claim 1 , wherein when the abnormal combustion detecting unit detects the abnormal combustion of a plurality of the cylinders claim 1 , the fuel supply cut-off unit cuts off the fuel supply to each ...

Diagnosis method

In an ordinary mode, when an abnormality diagnosis of a PM sensor attached to a downstream opening downstream of a filter is performed, the PM sensor is moved to a first upstream opening upstream of the filter, and an exhaust gas is discharged from an engine. An ECU stores a program for the abnormality diagnosis. In an abnormality diagnosis mode, the ECU diagnoses the PM sensor by comparing an output value of the PM sensor to a standard output after performing the program. The first upstream opening may be closed by a cover in the ordinary mode.

Test system

An administrating device that administrates a plurality of units for test used for a test of a mobile object such as a vehicle or a constituting component of the mobile object comprises a recognizing part that recognizes an assembly of one or more units for test as a group for test and an assembly of one or more group for test as a device for test, and an administrating body part that conducts a predetermined batch operation command or a predetermined batch setting for a unit for test that belongs to the designated one or more groups for test and/or that conducts a predetermined batch operation command or a predetermined batch setting on a unit for test that belongs to the designated one or more device for test.

Device and method for dynamic pressure loss and valve seal-tightness testing on a four-stroke internal combustion engine

An engine testing device for dynamic pressure loss and valve seal-tightness testing of a running four-stroke engine includes: a first pressure gauge detecting a pressure value in an air intake line to a cylinder of the engine and outputting a first output signal indicative of the pressure value detected; a second pressure gauge detecting a pressure value in an exhaust line of the engine and outputting a second output signal indicative of the pressure value detected; a trigger device detecting an electrical signal indicative of when a selected cylinder of the engine is the particular active cylinder; and a measured value detection device detecting the output signals of the first and second pressure gauges and an output signal of the trigger device, such that an association between points in time of the pressure measurements and the particular active cylinder is enabled.

METHOD AND SYSTEM FOR DIAGNOSING MISFIRE OF ENGINE

A system for diagnosing a misfire of an engine includes a sensing unit including at least one sensor for detecting at least one detection value associated with an operation of the engine, and an electronic control unit configured to determine whether a misfire of the engine due to exhaust valve leakage has occurred based on the detection values from the sensing unit, and perform an operation corresponding to the misfire due to exhaust valve leakage when the misfire due to exhaust valve leakage has occurred, wherein the electronic control unit a misfire code for exhaust valve leakage in a memory when the misfire due to exhaust valve leakage has occurred. 1. A system for diagnosing a misfire of an engine , comprising:a sensing unit including at least one sensor for detecting at least one detection value associated with an operation of the engine; andan electronic control unit configured to determine whether a misfire of the engine due to exhaust valve leakage has occurred based on the detection values from the sensing unit, and perform an operation corresponding to the misfire due to exhaust valve leakage when the misfire due to exhaust valve leakage has occurred,wherein the electronic control unit stores a misfire code for exhaust valve leakage in a memory when the misfire due to exhaust valve leakage has occurred.2. The system of claim 1 , wherein the electronic control unit is configured to:detect an output torque drop of the engine;control the engine by an optimal air/fuel ratio when the output torque drop of the engine is detected;count an output torque drop of the engine while controlling the engine by the optimal air/fuel ratio; anddetermine whether the misfire due to exhaust valve leakage has occurred when the output torque drop count is above a predetermined number.3. The system of claim 2 , wherein the misfire code for exhaust valve leakage comprises information on a misfire occurrence driving point where the misfire due to exhaust valve leakage has occurred ...

SYSTEMS AND METHODS FOR ON-BOARD CYLINDER LEAKDOWN TESTING

Methods and systems are provided for performing an onboard cylinder leakdown test in response to an indication of cylinder misfire. In one example, following an engine-off event and an engine temperature above a threshold, fuel is injected into the indicated cylinder under conditions wherein the cylinder is expected to be sealed, and the detection of hydrocarbon migration out of the cylinder indicates cylinder degradation. In this way, cylinder degradation may be accurately diagnosed without intrusive, time consuming, and difficult off-board cylinder leakdown tests. 1. A method for an engine , comprising:during a first condition, including an engine-off condition, injecting a quantity of fuel into a first cylinder of the engine while maintaining an intake valve and an exhaust valve of the first cylinder closed; andindicating degradation of the first cylinder responsive to hydrocarbon migration out of the cylinder.2. The method of claim 1 , further comprising:prior to injecting fuel into the first cylinder, positioning the first cylinder at a top dead center conformation.3. The method of claim 2 , wherein indicating degradation of the first cylinder responsive to hydrocarbon migration out of the first cylinder comprises indicating degradation of the exhaust valve based on hydrocarbon migration out of the first cylinder and into an engine exhaust.4. The method of claim 3 , further comprising:indicating degradation of the exhaust valve responsive to an output of an exhaust oxygen sensor indicating a decrease in exhaust air-fuel ratio.5. The method of claim 2 , wherein indicating degradation of the first cylinder responsive to hydrocarbon migration out of the first cylinder comprises indicating degradation of the first cylinder based on hydrocarbon migration out of the first cylinder and into a fuel vapor canister.6. The method of claim 5 , further comprising:indicating degradation of the first cylinder responsive to an increase in fuel vapor canister temperature above ...

METHOD FOR OPERATING AN INTERNAL COMBUSTION ENGINE, CONTROL DEVICE, AND INTERNAL COMBUSTION ENGINE

A method for operating an internal combustion engine with a motor, having a moving machine part and at least one machine element which retains the moving machine part and is subject to wear, such as, for example, a supporting, sealing, guiding or the like retaining machine element that is subject to wear during operation relative to the moving machine part, which machine element, because of the wear, is service-life-limiting for the operation of the internal combustion engine, wherein—for the operation of the internal combustion engine, a service-life-limiting time interval until the next maintenance of the internal combustion engine is specified, and—the internal combustion engine has a number of service-life-limiting machine elements, wherein for the at least one service-life-limiting machine element a remaining service life is forecast and the service-life-limiting time interval is determined therefrom. 124-. (canceled)25. A method for operating an internal combustion engine with a motor , comprising a movable engine part and at least one engine element that holds said movable engine part and which is subject to wear , thee method comprising the steps of:specifying, for operation of the internal combustion engine, a service-life-limiting time interval until a next maintenance operation on the internal combustion engine, wherein the internal combustion engine comprises a number of service-life-limiting engine elements; wherein, for at least one of the service-life-limiting engine elements, a remaining service life is predicted and, from this, the service-life-limiting time interval is determined;identifying at least one wear parameter, which tribologically determines the remaining service life of the service-life-limiting engine element, for wear of the engine element;assigning to a number of usage conditions of the internal combustion engine respective parameter values which are operatively related to the wear of the service-life-limiting engine element; ...

METHOD FOR DETECTING WATER-IN-FUEL AFTER REFUELING EVENT

A method, comprising generating a water-in-fuel indication responsive to a water-in-fuel content increasing more than a threshold amount within a threshold time of a refueling event is presented. 1. A method for an engine , comprising:generating a water-in-fuel indication responsive to a water-in-fuel content increasing more than a threshold amount within a first threshold duration of a refueling event.2. The method of claim 1 , further comprising limiting an engine speed in response to the water-in-fuel indication.3. The method of claim 1 , further comprising shutting down the engine in response to the water-in-fuel indication.4. The method of claim 1 , wherein the water-in-fuel content is determined based on a change in water volume collected from a fuel/water separator after the refueling event within the first threshold time claim 1 , without any other refueling events therebetween.5. The method of claim 1 , wherein generating the water-in-fuel indication comprises generating an audio alert.6. The method of claim 1 , wherein the refueling event comprises an increase in a fuel amount beyond a threshold fuel increase.7. The method of claim 1 , further comprising determining the water-in-fuel content responsive to a vehicle on claim 1 , engine off claim 1 , refueling event.8. The method of claim 1 , further comprising determining the water-in-fuel content responsive to an engine running refueling event claim 1 , wherein the engine running refueling event comprises one or more of a transmission in park claim 1 , a transmission in neutral claim 1 , and an engine rpm greater than zero.9. A method claim 1 , comprising: measuring a change in a water-in-fuel content, and', 'generating a water-in-fuel operator indication if the change in the water-in-fuel content is greater than a non-zero threshold amount., 'responsive to a refueling condition and following completion of refueling,'}10. The method of claim 9 , further comprising generating the water-in-fuel indication if ...

METHODS AND SYSTEMS FOR IN-USE MONITOR PERFORMANCE

Methods and systems are provided for updating an in-use monitoring performance (IUMP) based on operation of an auxiliary device. In one example, a method may include using an engine model to estimate a duration in which a diagnostic routine is not completed due to operation of an auxiliary device driven by an engine and selectively updating the IUMP ratio based on a comparison of the duration to a minimum time duration needed for completion of the diagnostic routine. 1. A method , comprising:using an engine model to estimate a duration in which a diagnostic routine is not completed due to operation of an auxiliary device driven by an engine, andin response to the duration being higher than a first threshold duration, excluding a drive cycle from a monitor compliance evaluation.2. The method of claim 1 , wherein entry conditions for use of the engine model include each of an operation of the auxiliary device and the diagnostic routine not being completed during the drive cycle.3. The method of claim 1 , wherein the monitor compliance evaluation includes updating an in-use monitor performance (IUMP) ratio at an end of the drive cycle claim 1 , the method further comprising not updating a numerator and a denominator of the IUMP ratio at the end of the drive cycle when the diagnostic routine is not completed and the drive cycle is excluded from the monitor compliance evaluation claim 1 , the IUMP ratio defined as a ratio of a number of completed diagnostic routines and a number of valid drive cycles.4. The method of claim 3 , wherein the valid drive cycle includes each of a vehicle operation for over a second threshold duration claim 3 , a vehicle operation at over a threshold speed for over a third threshold duration claim 3 , and a continuous engine idling for over a fourth threshold duration.5. The method of claim 3 , further comprising claim 3 , in response to the duration in which the diagnostic routine is not completed due to operation of the auxiliary device ...

Methods and system for estimating engine torque at low temperatures

A method and system for operating a vehicle that includes an integrated starter/generator and a driveline disconnect clutch is described. In one example, the method estimates engine torque as a function of engine temperature during cold engine starts so that if an estimate of engine torque is in error, the integrated starter/generator may still successfully start the engine.

System and Method for Alerting and Suppression of Detonation and/or Pre Ignition Phenomena in Internal Combustion Engines by Monitoring RPM Fluctuation

An engine system with advance detection of detonation and/or pre ignition, the system comprising an engine, operative for propulsion of a vehicle by generating rotational motion, whose rotational velocity over time is monitored; and a detonation and/or pre ignition detector operative to provide an alert for impending detonation and/or pre ignition of the engine, if the rotational velocity fluctuates over time to an extent which is predetermined to be unsafe. 1. An engine system with advance detection of detonation and/or pre ignition , the system comprising:An engine, operative for propulsion of a vehicle by generating rotational motion, whose rotational velocity over time is monitored; andA detonation and/or pre ignition detector operative to provide an alert for impending detonation and/or pre ignition of the engine, if the rotational velocity fluctuates over time to an extent which is predetermined to be unsafe.2. A system according to wherein a rotational velocity fluctuation pattern is predetermined to be safe if local fluctuations of the rotational velocity never exceed a threshold value.3. A system according to wherein a rotational velocity fluctuation pattern is predetermined to be unsafe if local fluctuations of the rotational velocity exceed a threshold value at least a predetermined number of times within a predetermined time window.4. A system according to wherein said threshold value comprises 60 rpm.5. A system according to wherein said predetermined time window comprises 10 sec.6. A system according to wherein a rotational velocity fluctuation pattern is predetermined to be safe if fluctuations of the rotational velocity within a time slot whose size is 770 milliseconds+−25% claim 2 , never exceed a threshold value.7. A system according to wherein a rotational velocity fluctuation pattern (RPM fluctuation pattern) is predetermined to be unsafe if fluctuations of the rotational velocity (RPM) within a time slot whose size is 770 millisecond+−25% claim ...

ENGINE OPERATOR INITIATED SELF-ADJUSTMENT SYSTEM

An operator initiated control process for an engine which tests the air-to-fuel ratio of an air-fuel mixture supplied to the engine when it is in stable operation and if need be changes the air-to-fuel ratio to improve engine performance and/or meet engine exhaust emissions requirements. 1. A control process for an engine with a device supplying a combustible air-fuel mixture to the operating engine and having a throttle valve movable between idle and wide open throttle positions to control the quantity of the air-fuel mixture supplied to the engine , the process comprising:an operator initiating an engine test;the engine test comprising at least one sensing of the engine speed for a predetermined specified number of engine revolutions, determining whether the at least one sensed engine speed is within a predetermined specified range and, if not, continuing to use a default air-to-fuel ratio of a mixture supplied to the engine for substantially the remainder of the period of engine continuous operation, or, if the engine speed is within the specified range for the specified number of engine revolutions, testing the air-to-fuel ratio to determine whether it should be changed and, if not, continuing to use the default air-to-fuel ratio for the remainder of the period of engine continuous operation or, if so, determining a desired new air-to-fuel ratio and using the new air-to-fuel ratio for the remainder of the period of continuous engine operation;during the testing of the air-to-fuel ratio determining whether a difference in a change of engine speeds is within a predetermined specified range and, if not, terminating the process of testing and any adjustment of the air-to-fuel ratio and continuing to use the default air-to-fuel ratio for operation of the engine during the remainder of the period of engine continuous operation unless a new engine test is initiated by the operator.2. The process of further comprising providing an indication to the operator that the ...

MACHINE COMMISSIONING SYSTEM AND METHOD

A system for commissioning a machine such as an internal combustion engine includes commissioning probes, and a user interface having a computer receiving test data from the commissioning probes. The computer is structured to store a commissioning profile for the machine on a memory, and to populate the commissioning profile based on a compensation factor that depends on a difference between a performance response of ancillary equipment connected with the machine and an expected response. The computer outputs a commissioning suitability signal based on comparing the commissioning profile to a target profile. 1. A system for commissioning a machine comprising:a plurality of commissioning probes structured to monitor a plurality of operating parameters of the machine;a user interface coupled with the plurality of commissioning probes, and including a computer and a computer readable memory;the computer being structured to receive test data from the plurality of commissioning probes, and to store a commissioning profile for the machine that is based on the test data on the computer readable memory;the computer being further structured to determine a compensation factor that is based on a difference between a performance response of ancillary equipment connected with the machine, and an expected response, and to determine the commissioning profile based on the compensation factor; andthe computer being further structured to compare the commissioning profile to a target profile, and to output a commissioning suitability signal that is based on the comparing of the commissioning profile to the target profile.2. The system of wherein the plurality of commissioning probes includes a plurality of control sensors resident on the machine claim 1 , and a plurality of auxiliary sensors claim 1 , and wherein the system further includes a wiring harness coupling the plurality of auxiliary sensors to the user interface.3. The system of wherein the machine includes an engine claim 2 ...

METHOD TO CONTROL TEMPERATURE OF ENGINE OF GENERATOR SYSTEM

A method to control temperature of an engine of a generator system during a load test is provided. The generator system includes a generator, one of a liquid load bank and an air resistive load bank, a reversible fan, and a heat exchanger. The method includes heating of the engine to a pre-determined temperature with heat supplied by the liquid load bank and the reversible fan or by the air resistive load bank via the reversible fan. 1. A method for controlling temperature of an engine of a generator system during a load test , the generator system including the engine , a generator , a liquid load bank , a reversible fan , and a heat exchanger , wherein the engine includes an engine jacket , the method comprising:generating heat from the liquid load bank through an electrical connection with the generator in response to initiation of the load test;directing a flow of heated coolant from the load bank, to the engine jacket;directing heat generated from the heat exchanger to the engine by way of the reversible fan to augment engine heat generated from the liquid load bank; andmaintaining an engine jacket temperature at a predetermined temperature.2. A method for controlling temperature of an engine of a generator system during a load test , the generator system including the engine , a generator , an air resistive load bank , a reversible fan , and a heat exchanger , the method comprising:generating heat from the air resistive load bank through an electrical connection with the generator in response to initiation of the load test;delivering ambient air to the air resistive load bank to cool the air resistive load bank, thereby heating the ambient air flowing through the air resistive load bank;pre-heating the heat exchanger by delivering heat of the air resistive load bank, via flow of heated ambient air; anddelivering heat from the heat exchanger to the engine, via the reversible fan and to maintain an engine jacket temperature at a predetermined temperature during ...

FAULT DIAGNOSIS METHOD OF THERMOSTAT

Disclosed herein is a fault diagnosis method of a thermostat including: confirming, by a controller, whether a flow stop valve is equipped in a vehicle; if it is determined that the flow stop valve is equipped in the vehicle, diagnosing the flow stop valve; and if it is determined that the diagnosis on the flow stop valve ends, diagnosing the thermostat to determine whether the thermostat is faulty. 1. A fault diagnosis method of a thermostat , comprising:confirming, by a controller, whether a flow stop valve is equipped in a vehicle;if it is determined that the flow stop valve is equipped in the vehicle, diagnosing the flow stop valve; andif it is determined that the diagnosis on the flow stop valve ends, diagnosing the thermostat to determine whether the thermostat is faulty.2. The fault diagnosis method of claim 1 , wherein the diagnosing of the flow stop valve includes deriving claim 1 , by the controller claim 1 , a model value of a temperature of cooling water and deriving an actual temperature value of the cooling water by measuring the temperature of the cooling water using a temperature sensor3. The fault diagnosis method of claim 2 , wherein it is confirmed in the diagnosing of the flow stop valve whether the diagnosis on the flow stop valve is completed and if it is confirmed that the diagnosis on the flow stop valve is not completed claim 2 , the deriving of the actual temperature value is repeatedly performed.4. The fault diagnosis method of claim 2 , wherein in the diagnosing of the thermostat claim 2 , it is determined whether the thermostat is faulty by comparing the model value and the actual temperature value with a reference value previously input to the controller.5. The fault diagnosis method of claim 4 , wherein in the diagnosing of the thermostat claim 4 , it is determined that the thermostat is normal if the model value exceeds the reference value.6. The fault diagnosis method of claim 4 , wherein in the diagnosing of the thermostat claim 4 , ...

FUEL SUPPLYING CONTROLLER

A fuel supplying controller detecting a clogging of a fuel filter includes a period setting portion setting a non-detection period where a clogging detection is prohibited, an ambient-temperature detection portion detecting an ambient temperature of an exterior of a vehicle, and a residual-fuel detection portion detecting a residual-fuel quantity in a fuel tank. The period setting portion sets the non-detection period, based on the ambient temperature detected by the ambient-temperature detection portion and the residual-fuel quantity detected by the residual-fuel detection portion. 1. A fuel supplying controller comprising:a fuel tank accommodating a fuel;a supply pump supplying the fuel from the fuel tank to an internal combustion engine of a vehicle;a fuel filter provided in a passage between the fuel tank and the supply pump, the fuel filter filtering the fuel;a clogging detection portion detecting a clogging of the fuel filter;a period setting portion setting a non-detection period where a clogging detection according to the clogging detection portion is prohibited;a timer count portion measuring a period from a start of the internal combustion engine to a time point that a timer counter exceeds the non-detection period;an ambient-temperature detection portion detecting an ambient temperature of an exterior of the vehicle; anda residual-fuel detection portion detecting a residual-fuel quantity in the fuel tank, whereinthe period setting portion sets the non-detection period, based on the ambient temperature detected by the ambient-temperature detection portion and the residual-fuel quantity detected by the residual-fuel detection portion.2. The fuel supplying controller according to claim 1 , whereinthe period setting portion stores a reaching period for the fuel temperature to reach a predetermined temperature, with respect to the residual-fuel quantity and the ambient temperature,the period setting portion sets the reaching period as the non-detection period, ...

CANISTER PURGE VALVE LEAK DETECTION SYSTEM

System for detecting leakage within a canister purge valve of an evaporative emission control system. The system includes a power train control module connected to the canister purge valve, configured to command the canister purge valve between open and closed positions. In addition, the system includes a flow meter having an inlet and an outlet. The inlet is in fluid communication with ambient air surrounding the vehicle, and the outlet is in fluid communication with an inlet of the canister purge valve. The system further includes a control module operatively connected to the flow meter. The control module is programmed to analyze flow through the flow meter; compare the measured flow to predetermined flow data; and to indicate whether that flow exceeds a predetermined level. 1. A system for detecting leakage within a canister purge valve of an evaporative emission control system of an automotive vehicle , the canister purge valve having an outlet in fluid communication with the engine intake manifold , the system comprising:a power train control module connected to the canister purge valve, configured to command the canister purge valve between_open and closed positions;a flow meter having an inlet in fluid communication with ambient air surrounding the vehicle, and an outlet in fluid communication with an inlet of the canister purge valve; and analyzing flow through the flow meter;', 'comparing the flow to predetermined flow data;', 'indicating whether the flow exceeds a predetermined level., 'a control module operatively connected to the flow meter and configured for'}2. The system of claim 1 , further comprising an orifice adapter positioned upstream of the flow meter claim 1 , the orifice adapter including one or more orifices claim 1 , each having a preselected diameter.3. The system of claim 1 , being further configured to detect the size of the leaking region within the canister purge valve claim 1 , based on the flow rate of the ambient air flowing ...

METHOD FOR OPERATING AN INTERNAL COMBUSTION ENGINE, INJECTION SYSTEM FOR AN INTERNAL COMBUSTION ENGINE AND INTERNAL COMBUSTION ENGINE HAVING AN INJECTION SYSTEM

A method for operating an internal combustion engine with a high pressure accumulator for a fuel injection system, includes the steps of: monitoring, in a time-dependent manner, a high pressure in the fuel injection system; conducting a check, at a high pressure-dependent starting time point, as to whether a continuous injection detection is to be carried out; and checking whether a high-pressure oscillation has occurred within an oscillation time interval prior to a starting time. 1. A method for operating an internal combustion engine with a high pressure accumulator for a fuel injection system , the method comprising the steps of:monitoring, in a time-dependent manner, a high pressure in the fuel injection system;conducting a check, at a high pressure-dependent starting time point, as to whether a continuous injection detection is to be carried out; andchecking whether a high-pressure oscillation has occurred within an oscillation time interval prior to a starting time.2. The method according to claim 1 , wherein the continuous injection detection is:(a) carried out if the high-pressure oscillation is not detected within the oscillation time interval; and(b) is not carried out if the high-pressure oscillation is detected within the oscillation time interval.3. The method according to claim 1 , wherein for detecting the high-pressure oscillation it is checked whether the high pressure—within the oscillation time interval—originating from a predetermined oscillation limit value below a high pressure target value has exceeded the high pressure target value and has subsequently dropped to a predetermined oscillation end value below the high pressure target value.4. The method according to claim 1 , wherein after detecting the high-pressure oscillation claim 1 , the continuous injection detection is blocked until the high pressure has again reached or exceeded a high pressure target value.5. The method according to claim 1 , wherein the starting time point is a time ...

PISTON TEMPERATURE STATE MONITORING SYSTEM FOR INTERNAL COMBUSTION ENGINE AND PISTON TEMPERATURE MONITORING METHOD FOR INTERNAL COMBUSTION ENGINE

Provided is a piston temperature state monitoring system for an internal combustion engine and a piston temperature monitoring method for an internal combustion engine which are capable of properly managing a history of a piston temperature. When the number of times of a piston temperature suppression control is counted, if a ratio of a temperature difference which is the difference between a maximum limit temperature and a piston temperature to a margin width which is the difference between the maximum limit temperature and a control start temperature is equal to or less than a count threshold ratio set in advance or calculated, a count output system outputs a count signal. 1. A piston temperature state monitoring system for an internal combustion engine which monitors a frequency at which a temperature of a piston of the internal combustion engine becomes equal to or higher than a monitoring setting temperature set in advance or calculated , comprising:a piston temperature calculation system;a piston temperature suppression control system; anda count output system, whereinthe piston temperature calculation system measures or estimates a piston temperature,the piston temperature suppression control system receives the piston temperature and, when the piston temperature is equal to or higher than a control start temperature, the piston temperature suppression control system performs a piston temperature suppression control where fuel injection into a cylinder is controlled to suppress an increase in the piston temperature based on a maximum limit temperature, in which the piston temperature is set in advance, and the control start temperature, which is the value lower than the maximum limit temperature and set in advance or calculated every moment, andwhen the number of times of the piston temperature suppression control is counted, if a ratio of a temperature difference which is the difference between the maximum limit temperature and the piston temperature to a ...

SYSTEM FOR DETERMINING PISTON PIN BORE WEAR

A machine may comprise a piston; a memory; and an electronic control module. The electronic control module may be configured to obtain information identifying a previous amount of wear of the piston pin bore and information identifying a wear limit; determine a base piston pin bore wear rate; calculate an effective piston pin bore wear rate based on the base piston pin bore wear rate; determine an amount of time between a current time and a time when the previous amount of wear of the piston pin bore was calculated; and calculate a current amount of wear of the piston pin bore based on the previous amount of wear, the amount of time, and the effective piston pin bore wear rate. The electronic control module may further be configured to calculate an amount of damage to the piston pin bore based on the current amount of wear and the wear limit. 1. A control system for monitoring an amount of wear of a piston pin bore of a piston of an engine , the control system comprising:a memory configured to store piston pin bore wear information; and obtain, from the piston pin bore wear information stored in the memory, information identifying a previous amount of wear of the piston pin bore and information identifying a wear limit;', 'determine a base piston pin bore wear rate;', 'calculate an effective piston pin bore wear rate based on the base piston pin bore wear rate;', 'determine an amount of time between a current time and a time when the previous amount of wear of the piston pin bore was calculated;', 'calculate a current amount of wear of the piston pin bore based on the previous amount of wear of the piston pin bore, the amount of time, and the effective piston pin bore wear rate;', 'calculate an amount of damage to the piston pin bore based on the current amount of wear of the piston pin bore and the wear limit; and', 'take a remedial action based on the amount of damage to the piston pin bore., 'an electronic control module configured to2. The control system of ...

ENGINE TEST METHOD, ENGINE TEST DEVICE, AND COMPUTER-READABLE RECORDING MEDIUM

An engine test method includes generating a test pattern in which a plurality of manipulated variables used for an engine test change in chronological order, correcting the test pattern based on an excess air ratio, and performing an engine test using the corrected test pattern to acquire time-series data on the manipulated variables and controlled amounts of the manipulated variables. 1. An engine test method comprising:generating a test pattern in which a plurality of manipulated variables used for an engine test change in chronological order;correcting the test pattern based on an excess air ratio; andperforming an engine test using the corrected test pattern to acquire time-series data on the manipulated variables and controlled amounts of the manipulated variables, by a processor.2. The engine test method according to claim 1 , wherein the generating includes generating claim 1 , as a test pattern claim 1 , a chirp signal indicating a time-series change in an manipulated variable.3. The engine test method according to claim 1 , further including correcting the test pattern based on first coverage of a first space that the manipulated variable is allowed to take and second coverage of a second space that a change rate value of the manipulated variable is allowed to take.4. The engine test method according to claim 3 , further including at least one piece of:removing a domain that the manipulated variable is not allowed to take from the first space, andremoving a domain that the change rate value is not allowed to take from the second space.5. The engine test method according to claim 1 , further including correcting the test pattern based on a regulation value of exhaust gas.6. The engine test method according to claim 1 , wherein the correcting includes correcting the test pattern by changing a fuel injection amount claim 1 , which is one of the manipulated variables.7. The engine test method according to claim 1 , wherein the correcting includes correcting the ...

SYSTEMS AND METHODS TO REGULATE DYNAMIC SETTINGS FOR ENGINE SPEED CONTROL MANAGEMENT

In some embodiments, a vehicle is provided having improved fuel economy by using gradual engine speed control. Once a governor activation threshold is crossed, a dynamic engine speed limit that gradually increases over time is implemented. In some embodiments, if the engine speed does not continue to rise over time, increases in the dynamic engine speed limit may be paused. In some embodiments, if the engine speed increases at too great of a rate for too long of a time, the dynamic engine speed limit may be reset. In some embodiments, increasing, pausing, and/or resetting the dynamic engine speed limit allows gradual acceleration while also avoiding torque lock. 1. A vehicle , comprising:an engine that includes an engine electronic control unit (engine ECU);a set of sensors that include an engine speed sensor, a vehicle speed sensor, and a throttle position sensor; andan electronic control unit (ECU) communicatively coupled to the engine ECU and the sensors;wherein the ECU is configured to calculate and provide engine speed limit values to the engine ECU; detecting that an engine speed has increased beyond a governor activation threshold value;', 'determining a dynamic engine speed limit;', 'determining whether conditions for applying the dynamic engine speed limit are met; and', 'while the conditions for applying the dynamic engine speed limit are met, repeatedly updating the dynamic engine speed limit to a subsequent dynamic engine speed limit; and, 'wherein calculating engine speed limit values includes determining a current engine speed value;', 'using a previous dynamic engine speed limit as the subsequent dynamic engine speed limit in response to determining that the current engine speed value is between the governor activation threshold value and an offset dynamic engine speed limit;', 'using a new dynamic engine speed limit as the subsequent dynamic engine speed limit in response to determining that the current engine speed value is between the previous ...

Calibration of a Pressure Sensor of an Injection System for a Motor Vehicle

Various embodiments include a method for checking a calibration of a pressure sensor comprising: moving a piston toward a TDC in successive cycles; while the piston moves toward TDC, closing an inlet valve thereby adjusting a setpoint value of a fluid pressure; measuring the fluid pressure with the pressure sensor arranged downstream of the outlet valve; applying a measurement current to the electromagnet when the inlet valve is closed; while the piston moves away from TDC, detecting an opening position of the inlet valve on the basis of a predetermined change with respect to time of the measurement current at which an opening movement of the inlet valve begins; over multiple pump cycles, changing the setpoint value of the fluid pressure by a predetermined difference; checking whether the change in opening position satisfies a predetermined correspondence criterion; and if the criterion is met, generating a fault signal.

METHOD FOR CONTROLLING AN INTERNAL COMBUSTION ENGINE

A method for controlling an internal combustion engine, in which, based on a rail pressure signal, a first characteristic variable is specified that indicates a misfire, a misfire being recognized when the rail pressure signal does not have the expected curve. 1. A method for controlling an internal combustion engine , the method comprising:specifying, based on a rail pressure signal, a first characteristic variable that indicates a misfire; andoutputting the first characteristic variable indicating the misfire when the rail pressure signal does not have an expected curve.2. The method as recited in claim 1 , wherein the first characteristic variable claim 1 , which indicates the misfire claim 1 , is output when the rail pressure signal increases.3. The method as recited in claim 2 , wherein the first characteristic variable claim 2 , which indicates the misfire claim 2 , is output when the rail pressure signal increases in an injection interval.4. The method as recited in claim 1 , wherein a second characteristic variable is specified that indicates a misfire.5. The method as recited in claim 4 , wherein the second characteristic variable is specified based on a rotational speed variable.6. The method as recited claim 4 , wherein an omitted injection is recognized when both the first characteristic variable and the second characteristic variable indicate a misfire.7. The method as recited in claim 4 , wherein an omitted ignition is recognized when only the second characteristic variable indicates a misfire.8. A non-transitory machine-readable storage medium on which is stored a computer program for controlling an internal combustion engine claim 4 , the computer program claim 4 , when executed by a computer claim 4 , causing the computer to perform the following steps:specifying, based on a rail pressure signal, a first characteristic variable that indicates a misfire; andoutputting the first characteristic variable indicating the misfire when the rail pressure ...

CONTROL SYSTEM WITH DIAGNOSTICS MONITORING FOR ENGINE CONTROL

New and/or alternative approaches to engine performance control that can account for the need to robustly monitor performance and/or operation of the physical plant and actuators thereof, while avoiding or limiting performance degradation. Model predictive control (MPC) or other control configuration such as proportional-integral-derivative control may be used to control the system by identifying a performance optimized control solution. In some examples, a modification to the performance optimized solution analysis is made to weight control solutions in favor of robust monitoring conditions. In other examples, the performance optimized solution is post-processed and modified to favor robust monitoring conditions.

DETECTION OF FUEL INJECTOR FAILURE SYSTEMS AND METHODS

A system includes one or more processors that are configured to obtain a measured fuel consumption rate for an internal combustion engine while the engine is operating at a predetermined operating condition to perform a mission. The one or more processors are also configured to compare the measured fuel consumption rate with an expected fuel consumption rate for the predetermined operating condition. Further, the one or more processors are configured to determine whether an injector flow limiter is in a latched condition based on the measured fuel consumption rate compared with the expected fuel consumption rate. Also, the one or more processors are configured to perform a responsive action responsive to determining that the injector flow limiter is in the latched condition. 1. A system comprising:one or more processors configured to:obtain a measured fuel consumption rate for an internal combustion engine while the engine is operating at a predetermined operating condition to perform a mission;compare the measured fuel consumption rate with an expected fuel consumption rate for the predetermined operating condition;determine whether an injector flow limiter is in a latched condition based on the measured fuel consumption rate compared with the expected fuel consumption rate; andperform a responsive action responsive to determining that the injector flow limiter is in the latched condition.2. The system of claim 1 , wherein the one or more processors are further configured to compare the measured fuel consumption rate with a range of rates for the expected fuel consumption rate.3. The system of claim 2 , wherein the range of rates is configured to account for at least one of injector wear or injector tolerance variations.4. The system of claim 1 , wherein the one or more processors are configured to compare the measured fuel consumption rate with the expected fuel consumption rate and determine whether the injector flow limiter is in the latched condition using a ...

ENGINE SELF-ADJUSTMENT SYSTEM

A utility engine air-to-fuel ratio control method in which during an initial or early part of a period of engine continuous operation its stability of operation is determined and if sufficiently stable a test of the air-to-fuel ratio of the air-fuel mixture supplied to the engine is performed and if need be changed to a new air-to-fuel ratio supplied to the engine during the remainder of the period of engine continuous operation. If the engine operation is not sufficiently stable the test is not started or if started is aborted. 1. An engine control process , comprising:starting an engine with a default air-to-fuel ratio of a fuel mixture supplied to the engine;determining whether the total engine running time substantially from engine start-up is within a predetermined specified time limit;within the time limit, determining whether the engine speed is within a predetermined range for a predetermined number of engine revolutions, and, if not, using the default air-to-fuel ratio for the remainder of the period of engine operation and, if so, initiating a process of testing whether the default air-to-fuel ratio should be changed and, if so, determining a desired new air-to-fuel ratio and using this desired new air-to-fuel ratio for the remainder of the period of continuous engine operation; andduring the process of testing the air-to-fuel ratio determining whether the engine speed difference is within a predetermined specified range and, if not, aborting the process of testing and making any adjustment of the air-to-fuel ratio and continuing to use the default air-to-fuel ratio for operation of the engine normally for the remainder of the period of continuous operation of the engine.2. The engine control process of wherein the time limit for the total engine running time is not more than 25 claim 1 ,000 revolutions for a two-cycle engine.3. The engine control process of wherein the time limit for the total engine running time is not more than 50 claim 1 ,000 ...

TOOL TO PREDICT ENGINE LIFE USING RING WEAR AND FUEL BURNED

Systems, apparatuses, and methods disclosed provide for estimating the remaining life for an engine. The method includes determining a correlation between a quantity of burned fuel and a level of wear of a piston ring for an engine. The level of wear of the piston ring is indicative of a remaining life of the engine. The method also includes determining a current quantity of burned fuel by the engine, and determining the remaining life of the engine based on the correlation and the current quantity of burned fuel by the engine. 1. An apparatus , comprising:a burned fuel determination circuit structured to determine a current quantity of burned fuel by an engine; andan estimated remaining life determination circuit structured to determine a remaining life of the engine based on the current quantity of burned fuel using a correlation between a quantity of burned fuel and a level of wear of a piston ring for the engine, wherein the level of wear of the piston ring is indicative of the remaining life of the engine.2. The apparatus of claim 1 , wherein the piston ring is a second compression ring fitting into a groove on an outer diameter of a piston of the engine claim 1 , and wherein the level of wear of the piston ring is a level of surface wear of the second compression ring.3. The apparatus of claim 1 , further comprising:a correlation determination circuit structured to determine the correlation between the quantity of burned fuel and the level of wear of the piston ring for the engine.4. The apparatus of claim 3 , wherein the determining the correlation comprises establishing the correlation based on data collected during operation of engines of same type as the engine claim 3 , and wherein the data includes the quantity of burned fuel in relation to the level of wear of the piston ring.5. The apparatus of claim 4 , wherein the quantity of burned fuel is determined based on data from an engine control unit (ECU) or data from a fuel usage record.6. The apparatus of ...

METHOD FOR IMPROVING FUEL ECONOMY TEST PRECISION IN ON-ROAD VEHICLES

A method for improving fuel efficiency testing precision in on-road vehicles. The method comprises: installing one or more dataloggers in one or more vehicles, each datalogger configured to receive fuel consumption data broadcast by an on-road vehicle's engine control unit (ECU); transmitting the fuel consumption data from the one or more dataloggers in the one or more on-road vehicles to a processor; and analyzing, using the processor, the fuel consumption data from the one or more dataloggers in the one or more on-road vehicles to determine fuel efficiency of the one or more on-road vehicles. The fuel consumption data comprises fuel rate data from the ECU which is transmitted through the one or more dataloggers, engine speed and other operating parameters from the ECU that are transmitted through the one or more dataloggers, torque sensor data which is transmitted through the one or more dataloggers, and traditional fuel log data. 1. A method for improving fuel efficiency testing precision in on-road vehicles , the method comprising:installing one or more dataloggers in one or more vehicles, each datalogger configured to receive fuel consumption data broadcast by an on-road vehicle's engine control unit (ECU);transmitting the fuel consumption data from the one or more dataloggers in the one or more on-road vehicles to a processor; andanalyzing, using the processor, the fuel consumption data from the one or more dataloggers in the one or more on-road vehicles to determine fuel efficiency of the one or more on-road vehicles.2. The method of further comprising:installing one or more torque sensors in the one or more vehicles, each torque sensor configured to measure torque value in the one or more on-road vehicles.3. The method of wherein the one or more dataloggers are telematic devices.4. The method of wherein the fuel efficiency testing compares one or more of the following: lubricants of different viscometric properties; mineral versus synthetic lubricants ...

TEST STANDS FOR ELECTRIC MOTOR TO BE CONNECTED TO FRONT END ACCESSORY DRIVE OF INTERNAL COMBUSTION ENGINE

A dynamometer system includes a prime mover dynamometer and a gearbox. The prime mover dynamometer includes a primary output configured to be coupled to a drivetrain that represents a portion of a vehicle powertrain, a secondary output having a fixed speed relationship with the primary output, and a controller. The gearbox is coupled to the secondary output and configured to be coupled to an electric motor. The controller alters a speed and torque of the outputs based on a calculated speed and torque associated with a simulated internal combustion engine that represents another portion of the vehicle powertrain to impart speed oscillations into the electric motor and to impart torque oscillations into the drivetrain. 1. A dynamometer system comprising:a prime mover dynamometer including a primary output configured to be coupled to a drivetrain that represents a portion of a vehicle powertrain, a secondary output having a fixed speed relationship with the primary output, and a controller; anda gearbox coupled to the secondary output and configured to be coupled to an electric motor, wherein the controller is programmed to alter a speed and torque of the outputs based on a calculated speed and torque associated with a simulated internal combustion engine that represents another portion of the vehicle powertrain to impart speed oscillations into the electric motor and to impart torque oscillations into the drivetrain.2. The system of claim 1 , wherein the prime mover dynamometer and gearbox are arranged such that as a speed of the simulated internal combustion engine increases claim 1 , a frequency of the speed and torque oscillations increases and an amplitude of the speed and torque oscillations decreases to maintain power balance.3. The system of claim 1 , wherein the prime mover dynamometer and gearbox are arranged such that as a torque of the simulated internal combustion engine increases claim 1 , an amplitude of the speed and torque oscillations increases.4. The ...

INTERNAL COMBUSTION ENGINE CONTROL DEVICE AND INTERNAL COMBUSTION ENGINE CONTROL METHOD

A control device of an internal combustion engine includes an estimating means adapted to estimate an amount of a mixture of fuel and oil dispersing according to a movement of a piston within a cylinder; and a limiting means adapted to limit an upper limit torque (UT) of an internal combustion engine according to the estimated amount of the mixture. 1. A control device of an internal combustion engine , comprising:an estimating device adapted to estimate an amount of a mixture of fuel and oil dispersing according to a movement of a piston within a cylinder; anda limiting device adapted to limit an upper limit torque of an internal combustion engine, according to the estimated amount of the mixture.2. The control device of an internal combustion engine according to claim 1 , wherein the limiting device limits the upper limit torque of the internal combustion engine lower with a larger amount of the estimated amount of the mixture.3. The control device of an internal combustion engine according to claim 2 , wherein the estimating device estimates that the dispersed amount of the mixture is larger with a larger reached amount of fuel to a wall surface of the cylinder claim 2 , the fuel being dispersed by fuel injection means.4. The control device of an internal combustion engine according to claim 3 , wherein the estimating device estimates that the reached amount is larger with a smaller number of fuel injections being injected within the cylinder.5. The control device of an internal combustion engine according to claim 3 , wherein the estimating device estimates that the reached amount is larger with a lower fuel pressure of fuel being injected within the cylinder.6. The control device of an internal combustion engine according to claim 3 , wherein the estimating device estimates that the reached amount is larger when an injection timing of fuel being injected within the cylinder is closer to a bottom dead center of the piston.7. A control method of an internal ...

STATE DETERMINATION DEVICE FOR INTERNAL COMBUSTION ENGINE, STATE DETERMINATION SYSTEM FOR INTERNAL COMBUSTION ENGINE, DATA ANALYSIS DEVICE, AND CONTROL DEVICE FOR INTERNAL COMBUSTION ENGINE

Provided is a state determination device for an internal combustion engine. The state determination device includes a storage device, and an execution device. The storage device stores mapping data that is data defining a mapping that outputs a determination result of a state of the internal combustion engine, by using an internal combustion engine state variable as an input. The execution device executes an acquisition process of acquiring the internal combustion engine state variable each time a crankshaft rotates by a specified angle, and a determination process of determining the state of the internal combustion engine based on an output of the mapping using the internal combustion engine state variable as an input. The execution device omits a part of the determination process performed each time the crankshaft rotates by the specified angle when a rotation speed of the crankshaft becomes equal to or higher than a predetermined threshold. 1. A state determination device for an internal combustion engine , the state determination device comprising:a storage device; andan execution device, wherein:the storage device is configured to store mapping data that is data defining a mapping that outputs a determination result of a state of the internal combustion engine, by using an internal combustion engine state variable that is a parameter indicating the state of the internal combustion engine as an input;the execution device is configured to execute an acquisition process of acquiring the internal combustion engine state variable each time a crankshaft of the internal combustion engine rotates by a specified angle, and a determination process of determining the state of the internal combustion engine based on an output of the mapping using the internal combustion engine state variable as an input;the mapping data is data that has been learned by machine learning; andthe execution device is configured to omit a part of the determination process performed each time ...

Method for Fuel Injector Characterization

A method of operating a fuel injection system for a motor vehicle includes one or more of the following: operating a fuel injector to perform a fuel injection, the fuel injector being in fluid communication with a fuel rail; sampling a rail pressure in the fuel rail during the fuel injection; regulating the rail pressure at a desired injection pressure, P, to the fuel injector; measuring an overall leakage on variations of the rail pressure across an engine cycle for the motor vehicle and between two engine positions of an internal combustion engine for the motor vehicle; and restarting a new measurement cycle for a new pressure measurement target. 1. A method of operating a fuel injection system for a motor vehicle , the method comprising:operating a fuel injector to perform a fuel injection, the fuel injector being in fluid communication with a fuel rail;sampling a rail pressure in the fuel rail during the fuel injection;{'sub': 'inj', 'regulating the rail pressure at a desired injection pressure, P, to the fuel injector;'}measuring an overall leakage on variations of the rail pressure across an engine cycle for the motor vehicle and between two engine positions of an internal combustion engine for the motor vehicle; andrestarting a new measurement cycle for a new pressure measurement target.2. The method of claim 1 , wherein restarting includes restarting when a current pressure level is utilized as a new pressure measurement target.3. The method of claim 1 , wherein the overall leakage on the variations of the rail pressure defined as DP=P−P.4. The method of claim 3 , wherein Pis measured at Θand Pis measured at Θ claim 3 , where Θand Θare two different angles of a crankshaft of the internal combustion engine.5. The method of claim 4 , further comprising energizing the injector with an energization-time claim 4 , ET claim 4 , after an inherent cylinder top-dead-center claim 4 , TDC claim 4 , to not produce a torque.6. The method of claim 5 , further comprising ...

METHOD AND EVALUATION UNIT FOR DETECTING A MALFUNCTION OF A FUEL SYSTEM OF AN INTERNAL-COMBUSTION ENGINE

A device for a fuel system that makes a fuel available for an operation of an internal-combustion engine where the fuel system includes a fuel pump which conveys the fuel into a fuel accumulator and includes one or more injection nozzles which convey the fuel from the fuel accumulator to a working mixture of one or more cylinders of the internal-combustion engine includes an evaluation unit. The evaluation unit is configured to ascertain pressure data with respect to a physical pressure in the fuel accumulator during an operation of the fuel system at a sampling-time, ascertain a change in a reference pressure at the sampling-time with aid of a reference model of the fuel system, and detect a defect of the fuel system on a basis of the pressure data and on a basis of the change in the reference pressure. 110.-. (canceled)11100110100105110108109110108. A device for a fuel system () that makes a fuel () available for an operation of an internal-combustion engine , wherein the fuel system () includes a fuel pump () which conveys the fuel () into a fuel accumulator () and includes one or more injection nozzles () which convey the fuel () from the fuel accumulator () to a working mixture of one or more cylinders of the internal-combustion engine , comprising:{'b': '111', 'claim-text': [{'b': ['202', '108', '100'], '#text': 'ascertain pressure data with respect to a physical pressure () in the fuel accumulator () during an operation of the fuel system () at a sampling-time;'}, {'b': ['318', '100'], '#text': 'ascertain a change in a reference pressure () at the sampling-time with aid of a reference model of the fuel system (); and'}, {'b': ['100', '318'], '#text': 'detect a defect of the fuel system () on a basis of the pressure data and on a basis of the change in the reference pressure ().'}], '#text': 'an evaluation unit () that is configured to:'}12. The device according to :{'b': ['105', '109'], '#text': 'wherein the reference model depends on one or more properties ...

METHODS AND SYSTEMS FOR IDENTIFYING INSUFFICIENT COMBUSTION BASED ON EXHAUST GAS CONTENT

Various methods and systems are provided for diagnosing a condition of a cylinder of an engine. In one example, a method includes adjusting recirculated exhaust gas responsive to a determined emission value and indicating insufficient combustion of one or more engine cylinders based on an amount by which the recirculated exhaust gas is adjusted. 1. A method for an engine , comprising:adjusting recirculated exhaust gas responsive to a determined emission value; andindicating insufficient combustion of one or more engine cylinders based on an amount by which the recirculated exhaust gas is adjusted.2. The method of claim 1 , wherein the determined emission value is a determined NOx level and wherein the amount by which the recirculated exhaust gas is adjusted is an amount adjusted over a set duration.3. The method of claim 2 , wherein adjusting recirculated exhaust gas includes adjusting an exhaust gas recirculation rate to maintain the determined NOx level at a target NOx level in response to the determined NOx level increasing above a threshold NOx level claim 2 , the threshold NOx level being a threshold amount above the target NOx level.4. The method of claim 1 , wherein indicating insufficient combustion includes indicating insufficient combustion when the amount by which the recirculated exhaust gas is adjusted is greater than a threshold increase in the recirculated exhaust gas.5. The method of claim 4 , further comprising not indicating insufficient combustion of one or more engine cylinders when the amount by which the recirculated exhaust gas is adjusted is less than the threshold increase in the recirculated exhaust gas or when adjusting the recirculated exhaust gas includes decreasing an exhaust gas recirculation rate.6. The method of claim 1 , further comprising adjusting the recirculated exhaust gas based on additional engine operating conditions claim 1 , the additional engine operating conditions including one or more of engine load claim 1 , engine ...

BACK-UP AND RESTORATION OF DATA BETWEEN VOLATILE AND FLASH MEMORY

A method, system, and computer program product are provided for back-up and restoration of data between volatile and flash memory. The method for controlling back-up of data to flash memory includes: organizing back-up data into stripes, wherein a stripe is a set of pages across all available flash memory devices, dies and planes which have the same block and page address; maintaining metadata indicating locations of known bad planes and grown bad planes; using the metadata when writing back-up data to determine which planes to send cache program commands to; and sending cache program commands to three or more stripes of data simultaneously including providing an indication in the stripe that the stripe is handling a cache program command If a grown bad block is encountered whilst saving a stripe of data, the stripe of data is re-written to the next available page address avoiding the grown bad block. 1. A computer program product for controlling back-up of data to flash memory , comprising:one or more computer readable storage media and program instructions stored on the one or more computer readable storage media, the program instructions executable by a computer to perform:organizing back-up data into stripes, wherein a stripe is a set of pages across all available flash memory devices, dies and planes which have the same block and page address;maintaining metadata indicating locations of known bad planes and grown bad planes;using the metadata when writing back-up data to determine which planes to send cache program commands to; andsending cache program commands to three or more stripes of data simultaneously including providing an indication in a stripe that the stripe is handling a cache program command;wherein if a grown bad block is encountered whilst saving a stripe of data, the stripe of data is re-written to the next available page address avoiding the grown bad block.2. The computer program product as claimed in claim 1 , wherein providing an indication ...

Fuel Vapor Pressure Detection By Bi-Directional Pump

Systems and method for determining a Reid vapor pressure of a fuel system using a bi-directional pump of the fuel system. The determined Reid vapor pressure is compared to reference Reid vapor pressures to identify the presence of, and size of, a leak in the fuel system. 1. A method for determining a Reid vapor pressure of a fuel system using a bi-directional pump of the fuel system , the method comprising:activating the bi-directional pump in a first direction until fuel pressure of the fuel system changes from a base level to a first predetermined fuel pressure, and deactivating the bi-directional pump when the fuel pressure reaches the first predetermined fuel pressure;recording a first rate of fuel pressure decay of the fuel pressure as the fuel pressure changes from the first predetermined fuel pressure to the base level;after the fuel pressure of the fuel system has returned to the base level or after a predetermined period of time has expired, activating the bi-directional pump in a second direction opposite to the first direction until fuel pressure of the fuel system changes from the base level to a second predetermined fuel pressure, and again deactivating the bi-directional pump when the fuel pressure reaches the second predetermined fuel pressure;recording a second rate of fuel pressure decay of the fuel pressure as the fuel pressure changes from the second predetermined fuel pressure to the base level; anddetermining the Reid vapor pressure to be calculated by a difference between the first rate of fuel pressure decay and the second rate of fuel pressure decay.2. The method of claim 1 , wherein:operating the bi-directional pump in the first direction is operating the bi-directional pump to generate a first pressure; andoperating the bi-directional pump in the second direction is operating the bi-directional pump to generate a second pressure that is opposite to the first pressure.3. The method of claim 1 , further comprising comparing the determined ...

ENGINE VIRTUAL TEST ENVIRONMENT SYSTEM AND ENGINE MANAGEMENT SYSTEM MAPPING METHOD

An engine virtual test environment system may include at least one memory and at least one processor configured to perform a virtual engine test and generate a virtual engine to which a physics-based model and a data-driven model are applied to replace an engine. The at least one memory may be configured to store a physics-based model representing the actual structure of an engine by any one of simulation, phenomenological relationship expression, physical characteristic change of constituent elements, a combust model, an ECU model, and an engine model, and a data-driven model representing the actual operation of the engine by any one of a test model, a mathematical model, modeling, engine DoE techniques, mathematical and statistical techniques, a driving range. 1. An engine virtual test environment system comprising:at least one memory; andat least one processor configured to perform a virtual engine test and generate a virtual engine to which a physics-based model and a data-driven model are applied to replace an engine, the physics-based model representing the actual structure of the engine by any one of simulation, phenomenological relationship expression, physical characteristic change of constituent elements, a combust model, an electronic control unit (ECU) model, and an engine model, and', 'the data-driven model representing the actual operation of the engine by any one of a test model, a mathematical model, modeling, engine design of experiments (DoE) techniques, mathematical and statistical techniques, and a driving range., 'wherein the at least one memory is configured to store'}2. The engine virtual test environment system of claim 1 , wherein the physics-based model is a one dimensional (1-D) Fast Running Model or Mean Value Engine Model and the test engine model is a Data Regression Model.3. The engine virtual test environment system of claim 1 , wherein the simulation represents entire characteristics of the engine with an intake system claim 1 , an ...

METHOD FOR OPERATING AN INTERNAL COMBUSTION ENGINE, INJECTION SYSTEM FOR AN INTERNAL COMBUSTION ENGINE AND INTERNAL COMBUSTION ENGINE

A method for operating an internal combustion engine having an injection system which has a high-pressure accumulator, wherein a high pressure in the high-pressure accumulator is regulated via a suction throttle on the low-pressure side as a first pressure control member in a first high-pressure control loop, wherein in a normal operation a high-pressure disturbance variable is produced via a pressure control valve on the high-pressure side as a second pressure control member, via which fuel is redirected from the high-pressure accumulator to a fuel reservoir. For this purpose, the high pressure in a safety operation is regulated by the pressure control valve via a second high pressure control loop, or, in the safety operation, a maximum fuel volume flow is continuously redirected from the high pressure accumulator to the fuel reservoir via the pressure control valve. 110-. (canceled)11. A method for operating an internal combustion engine having an injection system with a high-pressure accumulator , the method comprising the steps of: regulating a high pressure in the high-pressure accumulator using a low-pressure-side suction throttle as a first pressure setting element a first high-pressure regulating loop; generating , in a normal operating mode , a high-pressure disturbance variable using of a high-pressure-side pressure regulating valve as a second pressure setting element by way of which fuel is discharged from the high-pressure accumulator into a fuel reservoir; and , in a protective operating mode , regulating the high pressure using the pressure regulating valve by way of a second high-pressure regulating loop , or permanently opening the pressure regulating valve in the protective operating mode.12. The method according to claim 11 , including setting a first operation type of the protective operating mode if the high pressure reaches or overshoots a first pressure threshold value claim 11 , wherein claim 11 , in the first operation type claim 11 , the ...

FLOW RATE MEASURING DEVICE

The present disclosure provides a flow rate measuring device including a flow rate detecting body, a humidity detecting body, and a base. The flow rate detecting body protrudes inside of an intake passage. The humidity detecting body protrudes inside of the intake passage at a position away from the flow rate detecting body. The base is connected to the flow rate detecting body and the humidity detecting body. The humidity detecting body holds a sensor chip that includes a humidity detecting element sensitive to the humidity of the intake air. A length, along a flow direction of the intake air, of an exposed portion of the humidity detecting body is defined as a referential length. The humidity detecting element exists within a range from an upstream end of the exposed portion of the humidity detecting body to a position of half the referential length. 1. A flow rate measuring device comprising:a flow rate detecting body that protrudes inside of an intake passage through which an intake air to be taken in an internal combustion engine flows, the flow rate detecting body detecting a flow rate of the intake air;a humidity detecting body that protrudes inside of the intake passage at a position away from the flow rate detecting body, the humidity detecting body detecting a humidity of the intake air; anda base that is connected to the flow rate detecting body and the humidity detecting body, the base serving as a root portion of the flow rate detecting body and the humidity detecting body, whereinthe humidity detecting body holds a sensor chip that includes a humidity detecting element sensitive to the humidity of the intake air,the humidity detecting element is disposed on a surface of the sensor chip and the humidity detecting body holds the sensor chip such that the humidity detecting element is exposed inside of the intake passage,a length, along a flow direction of the intake air, of an exposed portion of the humidity detecting body that is exposed inside of the ...

MULTI-MODAL FLUID CONDITION SENSOR PLATFORM AND SYSTEM THEREFOR

This invention encompasses embodiments for multi-modal integrated simultaneous measurement of various aspects of fluids contained in circulating systems such as automotive reciprocating engines and vehicle transmissions. These circulating systems perform constant internal lubrication, and heat and contaminant removal to protect the internal moving parts from the inherent friction and damage in normal operation. Most commonly this is achieved with fluids based on hydrocarbon and/or related synthetics, which, over time can lose their protective properties, and vary in their performance or breakdown/decay due to internal and external events. Several components within the lubricant fluid can be measured and can provide insight into the efficacy of the system to perform its designed mission. Described herein is a real-time, simultaneous, integrated, multi-modal sensor system for early warning notification that can be further enhanced using specifically designed nanoparticles that can be introduced into the system, engineered to specifically bind with the contaminants and/or undergo an irreversible state change upon certain experienced conditions to both increase the detectability as well as provide for a framework to improve filter performance. 1. An integrated system for continuous monitoring of multiple properties of a fluid derived from measurements from a plurality of sensor modalities within a fluid-based closed-system environment , wherein said system is embedded into a standard size and shaped oil pan plug found within a reciprocating engine oil drain plug , wherein said system is remotely located from a display and processing unit by wired or wireless data telemetry.2. The integrated system of claim 1 , wherein said system is an in-motor lubrication monitoring system.3. The integrated system of claim 1 , wherein said monitoring is real-time.49-. (canceled)10. The integrated system of claim 1 , additionally comprising a remotely located processing and display unit ...

DIAGNOSTIC SYSTEMS AND METHODS FOR ISOLATING FAILURE MODES OF A VEHICLE

A system includes a controller having a control signal generation unit that provides control signals to actuate one or more valve actuators of an engine to a desired position, and control signals to modify one or more operational parameters and an operational mode of the engine. A parameter signal process unit receives parameter signals corresponding to at least one operational parameter of the engine, and at least one sensor coupled to the engine. At least one sensor corresponds to a position of a valve. A failure detection unit generates at least one fault code corresponding to one or more failure modes. A failure mode isolation unit isolates a failure mode from the one or more failure modes in response to modifying the operational parameters or the operational mode, causing actuation of the valves to a desired position, or receiving the parameter signals and the sensor. 1. A method comprising:generating, by a controller, at least one fault code corresponding to one or more failure modes;modifying, by the controller, a mode of operation of an engine in response to the generated at least one fault code;actuating, by the controller, one or more valve actuators of the engine to a desired position in response to the generated at least one of fault code;receiving, by the controller, at least one parameter value corresponding to one or more operational parameters of the engine in response to the generated at least one of fault code;receiving, by the controller, data provided by at least one sensor positioned within the engine in response to the generated at least one of fault code; andisolating, by the controller, a failure mode from the one or more failure modes in response to at least one of: modifying the mode of operation of the engine, actuating one or more valve actuators, receiving the at least one parameter value, and receiving the data provided by the at least one sensor.2. The method of claim 1 , wherein generating at least one fault code includes generating ...

Method and device for diagnose of valves of an internal combustion engine

A method for diagnosis of at least one valve in at least one cylinder in a combustion engine comprising the steps, at a movement of a piston in said cylinder, of detecting movements propagating in a cylinder head of the cylinder or of parts adjacent thereto in the engine, comparing values resulting from the detection step with at least one stored setpoint value, and determining the state of said at least one valve, based on the result of said comparison.

Misfire determination apparatus and method for internal combustion engine

A CPU determines that misfires are occurring in a cylinder subject to determination of whether misfires are occurring when a value obtained by subtracting a rotation fluctuation amount ΔT30[n−2] from a rotation fluctuation amount ΔT30[n] is greater than or equal to a determination threshold. The rotation fluctuation amount ΔT30[n] is subject to the misfire determination. The rotation fluctuation amount ΔT30[n−2] is 360° CA earlier than the rotation fluctuation amount ΔT30[n]. When stopping fuel supply to a cylinder #1 and determining whether misfires are occurring in cylinder #4, the CPU determines whether misfires are occurring after executing a correcting process that corrects the determination threshold to a second determination threshold Δth2, which is less than a first determination threshold Δth1.

Misfire detection device and method for internal combustion engine

A misfire detection device executes a deactivating process that deactivates combustion control for air-fuel mixture in one or some of cylinders and a deactivating process that determines whether a misfire has occurred. The determining process determines whether a misfire has occurred by evaluating a magnitude of a rotation fluctuation amount using a determination value independent from the rotation fluctuation amount. The determining process includes a deactivation-related setting process that sets a different determination value for each of first and second cylinders when the deactivating process is executed. The deactivating process has not been executed in the first and second cylinders. The rotation fluctuation amount is a change amount of an instantaneous speed variable. The instantaneous speed variable indicates a speed in a case in which a crankshaft rotates in a rotation angle region that is less than or equal to an occurrence interval of a compression top dead center.

Non-Contact Process for Engine Deposit Layer Measurement

Systems and processes are provided for measuring carbon deposits on an engine. In some examples, a light source can be transmitted through a viewing window of an engine onto an area of an internal surface of the engine and reflected back through the viewing window and detected using an optical sensor. A topography of the area can be determined based, at least in part, on the reflected light source detected by the optical sensor and used to determine whether carbon deposits have increased, decreased, or remained constant on the area. 1. A process , comprising:transmitting a light source at a first point in time through a viewing window of an engine onto an area of an internal surface of the engine;reflecting the light source off the area back through the viewing window;detecting the reflected light source using an optical sensor;determining a first topography of the area based, at least in part, on the reflected light source detected by the optical sensor;transmitting the light source at a second point in time through the viewing window onto the area wherein the second point in time is after the first point in time;reflecting the light source off the area back through the viewing window;detecting the reflected light source using an optical sensor;determining a second topography of the area based, at least in part, on the reflected light source detected by the optical sensor; andcomparing the first topography and the second topography to determine whether carbon deposits have increased, decreased, or remained constant on the area.2. The process of claim 1 , wherein the viewing window is a scavenge port.3. The process of claim 1 , wherein the internal surface of the engine is a piston.4. The process of claim 1 , wherein the light source is a blue laser.5. The process of claim 1 , wherein the optical sensor is a photosensor.6. The process of claim 1 , wherein the light source and the internal surface of the engine are substantially the same distance from each other at ...

METHOD FOR OPERATING A TEST STAND

Aspects of the present disclosure are directed to controlling an inner effective torque or an effective torque of a drive unit via a unit controlling unit. In some embodiments, the control method may include providing desired values for the inner effective torque or the effective torque and determining actual values for the inner effective torque or the effective torque during operation of the drive unit on a test stand, and in that actuating dynamics of the drive unit are taken into account in the control by means of a transfer function by correcting the desired values of the control with the transfer function or in that for controlling the inner effective torque or the effective torque of the drive unit, a feed forward control of a manipulated variable of the drive unit is used. 1. A method for operating a test stand for performing a test run including the following steps:providing a drive unit connected via a connecting shaft to a load machine;driving or loading the drive unit with the load machine;controlling the load machine by a control device on the test stand for carrying out the test run; andcontrolling the drive unit by a unit controlling unit for carrying out the test run;reproducing given time courses of a rotational speed and a torque of the drive unit;controlling an inner effective torque or an effective torque of the drive unit by the unit controlling unit by providing desired values for the inner effective torque or the effective torque; anddetermining actual values for the inner effective torque or the effective torque during operation of the drive unit on the test stand;accounting for actuating dynamics of the drive unit by correcting the desired values of the control with a transfer function orby using a feed forward control of a manipulated variable of the drive unit for controlling the inner effective torque or the effective torque of the drive unit and correcting precontrol values of the manipulated variable or the desired values of the control ...

FUEL SYSTEM SMART NODE

A measuring system, method, and/or computer program that realizes physics-based relations between sensor readings to monitor for degradations and predict failures of power systems is provided. For example, the supply and return of fuel in a power system is provided by a fuel injection system. The fuel injection system responds to changes in loads and system conditions, such as to compensate for fuel loss due to fuel combustion, by continuously and instantaneously changing the fuel flow. This behavior by the fuel injection system creates characteristic signatures. These characteristic signatures are instantaneously detected and utilized by the measuring system, method, and/or computer program to detect healthy, degrading, failing, and failed mechanical conditions so as to monitor for degradations and predict failures of the power system. 1. A device for computing a health of an engine , the device being communicatively coupled to at least two sensors , a first sensor of the at least two sensors being physically coupled to fuel supply to the engine , a second sensor of the at least two sensors being physically coupled to fuel return from the engine , the device configured to:receive a sensor data from the at least two sensors that includes an in-flow detected by the first sensor and an out-flow detected by the second sensor;process the sensor data to derive signature differences; anddiagnose the health of the engine based on the signature differences.2. The device of claim 1 , wherein the sensor data is a precise and instantaneous detection of flow rates into and out of the engine.3. The device of claim 1 , wherein the device is configured to determine from the diagnoses of the health of the engine a prognosis for degradations and failures of the engine.4. The device of claim 1 , wherein the signature differences include fluctuations in the sensor data between the in-flow of the fuel supply and the out-flow of the fuel return.5. The device of claim 1 , wherein the ...

CONTROL SYSTEM FOR ENGINE

A control system for an engine includes an operational data sensor generating signals indicative of operational data of the engine and a controller communicably coupled with the engine and the operational data sensor. The controller operates the engine based on operational parameters defined by a baseline engine model. The controller receives the signals indicative of the operational data of the engine, and generates a dynamic engine model which defines at least one operational parameter of the engine based on the received operational data of the engine. The controller compares the baseline engine model to the dynamic engine model. The controller determines a difference between the baseline engine model and the dynamic engine model based on the comparison. The controller compares the determined difference to a threshold difference value and operates the engine based on the dynamic engine model, if the determined difference exceeds the threshold difference value. 1. A control system for an engine , the control system comprising:an operational data sensor configured to generate signals indicative of operational data of the engine; and operate the engine based on a baseline engine model, wherein the baseline engine model defines at least one operational parameter based on which the engine operates;', 'receive the signals indicative of the operational data of the engine;', 'generate a dynamic engine model of the engine based on the received operational data, wherein the dynamic engine model defines at least one operational parameter based on which the engine operates;', 'compare the baseline engine model to the dynamic engine model;', 'determine a difference between the at least one operational parameter defined by the baseline engine model and the at least one operational parameter defined by the dynamic engine model, wherein the difference is determined based on comparing the baseline engine model to the dynamic engine model;', 'compare the determined difference to a ...

Method for performing maintenance on an engine

A method for performing maintenance on an engine includes: providing an engine maintenance system including a database system having a database and a database management device: providing a first performance parameter stored in the database and characterizes an engine performance before an engine maintenance procedure; providing a maintenance parameter stored in the database and characterizes a scope of a maintenance measure performed on an engine during an engine maintenance procedure; providing a second performance parameter stored in the database and characterizes the engine performance after the engine maintenance procedure; determining, using the database management device, a functional relationship between the maintenance parameter and the contribution of the maintenance parameter to a difference between the first performance parameter and the second performance parameter; outputting the functional relationship via the engine maintenance system; and performing maintenance on the engine taking the functional relationship into account. 19-. (canceled)10. A method for performing maintenance on an engine , comprising the steps of:providing an engine maintenance system including a database system having a database and a database management device;providing at least one first performance parameter stored in the database and characterizing an engine performance before an engine maintenance procedure;providing at least one maintenance parameter stored in the database and characterizing a scope of a maintenance measure performed on an engine during an engine maintenance procedure;providing at least one second performance parameter stored in the database and characterizing the engine performance after the engine maintenance procedure;determining, using the database management device, a functional relationship between the maintenance parameter and the contribution of the maintenance parameter to a difference between the first performance parameter and the second ...

METHOD AND SYSTEM FOR FUEL INJECTOR BALANCING

Methods and systems are provided for balancing fuel delivery amongst all engine fuel injectors. In one example, a method may include selectively adjusting an injection timing of one or more fuel injectors of a plurality of fuel injectors to increase an inter-injection period between two consecutive fuel injections in response to a request to balance amounts of fuel injected by the plurality of fuel injectors 1. A method for operating an engine in a vehicle , comprising:adjusting an injection timing and an amount of time between consecutive fuel injections in response to a request to balance amounts of fuel injected by a plurality of fuel injectors.2. The method of claim 1 , wherein adjusting the injection timing includes selectively advancing or retarding timing of one or more fuel injectors of the plurality of fuel injectors relative to their respective original injection timings to increase the amount of time between two consecutive fuel injections.3. The method of claim 2 , further comprising claim 2 , during balancing of the amount of fuel injected claim 2 , estimating a first fuel mass error of a second fuel injector based on each of a first average fuel rail pressure estimated between a second fuel injection via the second fuel injector and an immediately preceding first fuel injection via a first fuel injector and a second average fuel rail pressure estimated between the second fuel injection via the second fuel injector and an immediately subsequent third fuel injection via a third fuel injector.4. The method of claim 3 , wherein a first injection timing of the immediately preceding first fuel injection is advanced from its original injection timing claim 3 , and wherein a third injection timing of the immediately subsequent third fuel injection is retarded from its original injection timing claim 3 , the respective original injection timing for each fuel injector based on a configuration of a high pressure pump of a fuel system and a number of cylinders in ...

FUEL INJECTION CONTROL DEVICE

Provided is a fuel injection control device capable of detecting individual differences in fuel injection valves and appropriately collecting information on the individual differences. For this reason, the fuel injection control device includes a fuel injection valve drive circuit that supplies a current or a voltage to a coil of a fuel injection valve to drive the fuel injection valve, a valve body operation time period detection unit that detects a valve body operation time period related to an operation of a valve body of the fuel injection valve, and a state determination unit that determines that at least one of the fuel injection valve, the valve body operation time period detection unit, and the fuel injection valve drive circuit is abnormal based on information related to a valve body operation time period detected by the valve body operation time period detection unit. 1. A fuel injection control device comprising:a fuel injection valve drive circuit that supplies a current or a voltage to a coil of a fuel injection valve to drive the fuel injection valve;a valve body operation time period detection unit that detects a valve body operation time period related to an operation of a valve body of the fuel injection valve; anda state determination unit that determines that at least one of the fuel injection valve, the valve body operation time period detection unit, and the fuel injection valve drive circuit is abnormal based on information related to a valve body operation time period detected by the valve body operation time period detection unit.2. The fuel injection control device according to claim 1 , wherein the valve body operation time period detection unit detects an inflection point that occurs in a voltage or a current supplied from the fuel injection valve drive circuit when the valve body of the fuel injection valve opens or closes claim 1 , and detects timing at which the inflection point appears as timing at which the fuel injection valve opens ...

Induction diagnostics for skip fire engine

A variety of methods and arrangements for detecting failure of the commanded air induction in an internal combustion engine are described. In some embodiments, the intake manifold pressure is monitored. An air induction event generates a fluctuation in the intake manifold pressure, which is recorded. The signal is processed through a diagnostic filter to help determine whether the actual induction matched the commanded induction. In other embodiments, measured crankshaft acceleration is compared with estimated crankshaft acceleration. If the two quantities differ by a threshold amount an induction fault is detected. The two detection methods may also be combined. The describe approaches are particularly well suited for use in engines operating in a skip fire mode with cylinder deactivation and/or a dynamic firing level modulation mode.

FUEL VAPOR LINE DIAGNOSTICS

Methods and systems are provided for diagnosing fuel vapor leaks due to un-latching of quick connectors in interfaces of a fuel vapor system. In one example, a method may include using positive pressure generated in the intake manifold by reverse rotation of the engine unfueled, to detect un-latching of quick connectors in the fuel vapor system. After the positive pressure test, a negative pressure test is performed on the fuel vapor system to confirm any un-latching of quick connectors. 1. A method for a vehicle engine , comprising:reverse rotating an engine unfueled and opening a purge valve to apply positive pressure from an intake manifold on a fuel vapor system; andindicating disconnection of a connector coupled to a fuel vapor conduit of the fuel vapor system based on a pressure response following the application of positive pressure.2. The method of claim 1 , further comprising claim 1 , in response to the indicating claim 1 , limiting purging of a fuel vapor canister until an operator input indicative of connector recoupling is received.3. The method of claim 1 , wherein reverse rotating the engine unfueled and opening the purge valve includes initially reverse rotating the engine unfueled with the purge valve closed until intake manifold pressure is higher than a threshold claim 1 , and then opening the purge valve to apply the higher that threshold intake manifold pressure on the fuel vapor system claim 1 , wherein the reverse rotating includes rotating the engine in a direction opposite to the direction of engine rotation for propelling the vehicle.4. The method of claim 1 , wherein the indicating includes indicating imminent disconnection of the connector based on a higher than threshold drop in manifold pressure following the application of the positive pressure.5. The method of claim 1 , wherein the engine is coupled in a hybrid electric vehicle including an electric motor claim 1 , and wherein spinning the engine unfueled includes spinning the engine ...

Engine Monitoring Apparatus

An engine oil tiller cap for monitoring an internal combustion engine comprises: a processor; and a sensor module comprising a pressure sensor configured to sense crankcase pressure of the internal combustion engine and to output data representative of the sensed crankcase pressure to the processor. The engine oil filler cap is configured to provide a housing for the processor. The processor is configured to determine a value representative of the firing frequency of the internal combustion engine based on the output data.

Internal combustion engine provided with variable compression ratio mechanism

This internal combustion engine is provided with a variable compression ratio mechanism capable of changing a mechanical compression ratio by changing the volume of the combustion chamber at the top dead center. The pressure and temperature of remaining combusted gas within the combustion chamber at the time when the exhaust valve is closed in the intake stroke is measured or estimated, the pressure and temperature of intake air supplied into the combustion chamber after the exhaust valve is closed in the intake stroke is measured or estimated, and based on the assumption that the pressure and temperature of the remaining combusted gas which saturates the volume of the combustion chamber at the time when the exhaust valve is closed in the air intake stroke become, when the intake air is supplied to the combustion chamber, equal to the pressure and temperature of the intake air, the volume of the remaining combusted gas after the change is calculated.

METHOD TO CONTROL A ROAD VEHICLE DURING A SLIP OF THE DRIVE WHEELS

A method to control a road vehicle during a slip of the drive wheels, which are caused to rotate by an internal combustion engine provided with a plurality of cylinders arranged in two banks, and with a plurality of fuel injectors each injecting fuel into a corresponding cylinder. The control method comprises the steps of: detecting a slip of at least one drive wheel; and controlling the internal combustion engine, only during a slip of at least one drive wheel, with a signalling law, which causes the internal combustion engine to work in an abnormal manner so as to generate an abnormal vibration and/or an abnormal noise, which can be perceived by the driver. The internal combustion engine has two twin control units, each of which is associated with a corresponding bank, controls all and the sole injectors of its own bank and actuates the signalling law completely independently of and autonomously from the other control unit. 113411101611) A method to control a road vehicle () during a slip of the drive wheels () , which are caused to rotate by an internal combustion engine () provided with a plurality of cylinders () arranged in two banks () , and with a plurality of fuel injectors () each injecting fuel into a corresponding cylinder (); the control method comprises the steps of:{'b': '3', 'detecting a slip of at least one drive wheel (); and'}{'b': 4', '3', '4, 'controlling the internal combustion engine (), only during a slip of at least one drive wheel (), with a signalling law, which causes the internal combustion engine () to work in an abnormal manner so as to generate an abnormal vibration and/or an abnormal noise, which can be perceived by the driver;'}{'b': 4', '11', '11, 'wherein the signalling law entails cyclically actuating an impulsive deviating event (R), which determines an impulsive gap in the torque generated by the internal combustion engine () and consists of at least an incomplete or failed injection of fuel into a single cylinder (), which ...

ENGINE MONITORING METHOD

A method of monitoring the usage of an internal combustion engine is provided. The method comprises performing an engine monitoring routine using a local monitoring device directly attached to an internal combustion engine. The engine monitoring routine includes generating a plurality of data points representative of the crankcase pressure of the internal combustion engine using a pressure sensor of the local monitoring device, processing the generated data points to determine a first value representative of a firing frequency of the internal combustion engine, generating an aggregated summary of the internal combustion engine usage based on the first value, and transmitting identification data for the local monitoring device and the aggregated summary from the local monitoring device to a remote application. The remote application processes the transmitted aggregated summary based on the transmitted identification data to determine engine speed usage data for the internal combustion engine. 2. A method of monitoring according to wherein:the generated data points are also processed to determine a second value representative of an average of the crankcase pressure of the internal combustion engine; andthe aggregated summary is generated based on the first value and the second value.3. A method of monitoring according to wherein:the remote application processes the transmitted aggregated summary to determine engine torque output usage data for the internal combustion engine based on the transmitted identification data.4. A method of monitoring according to wherein:the local monitoring device processing the generated data points to determine the second value includes calculating a root means square average of the generated data points.5. A method according to any preceding claim wherein:the engine monitoring routine is repeated at least once over a time period for generating engine usage data over the time period.6. A method according to wherein:the aggregated summary ...

Method and Device for Checking the State of the Outlet Valves of an Engine of a Motor Vehicle

Various embodiments of the teachings herein include methods for operating a motor vehicle having combustion chambers. The methods may include: closing the combustion chambers of the motor vehicle towards the exhaust tract by bringing outlet valves of the combustion chambers into the closed state; checking whether the outlet valves of the combustion chambers of the motor vehicle are in a closed state by evaluating the pressure prevailing in an intake pipe of the motor vehicle; and in the event one or more of the outlet valves are not in a closed state, initiating countermeasures to comply with emissions protocols. 1. A method for operating a motor vehicle having combustion chambers , the method comprising:closing the combustion chambers of the motor vehicle towards the exhaust tract by bringing outlet valves of the combustion chambers into the closed state;checking whether the outlet valves of the combustion chambers of the motor vehicle are in a closed state by evaluating the pressure prevailing in an intake pipe of the motor vehicle; andin the event one or more of the outlet valves are not in a closed state, initiating countermeasures to comply with emissions protocols.2. The method as claimed in claim 1 , wherein checking whether the outlet valves of the combustion chambers of the motor vehicle are in the closed state includes evaluating the pressure profile prevailing in the intake pipe of the motor vehicle.3. The method as claimed in claim 2 , further comprising:determining a mean pressure level from the pressure profile prevailing in the intake pipe of the motor vehicle; andcomparing the mean pressure level with a stored mean pressure level for normal operation of the motor vehicle.4. The method as claimed in claim 2 , wherein evaluating the pressure profile prevailing in the intake pipe of the motor vehicle includes:determining the peak pressure values of the pressure profile; andcomparing the determined peak pressure values with stored peak pressure values ...

SYSTEM AND METHOD OF VALVE WEAR DETECTION

A system includes a reciprocating engine having a piston disposed in a cylinder, an intake valve, an exhaust valve, and an exhaust flow path downstream of the exhaust valve. The system also includes a first sensor configured to obtain a first feedback indicative of an exhaust gas parameter in the exhaust flow path. The system also includes a controller configured to identify a valve wear condition of at least one of the intake valve or the exhaust valve at least partially based on the first feedback from the first sensor. 1. A system , comprising:a reciprocating engine having a piston disposed in a cylinder, an intake valve, an exhaust valve, and an exhaust flow path downstream of the exhaust valve;a first sensor configured to obtain a first feedback indicative of an exhaust gas parameter in the exhaust flow path; anda controller configured to identify a valve wear condition of at least one of the intake valve or the exhaust valve at least partially based on the first feedback from the first sensor, wherein the controller is configured to correlate the valve wear condition specifically to one valve of the intake valve or the exhaust valve.2. The system of claim 1 , wherein the exhaust gas parameter comprises an exhaust gas composition.3. The system of claim 2 , wherein the first sensor comprises an oxygen sensor claim 2 , a fuel sensor claim 2 , or a combination thereof.4. The system of claim 2 , comprising a second sensor configured to obtain a second feedback indicative of an exhaust temperature in the exhaust flow path claim 2 , wherein the controller is configured to identify the valve wear condition of at least one of the intake valve or the exhaust valve at least partially based on the first feedback from the first sensor and the second feedback from the second sensor.5. The system of claim 4 , comprising a third sensor configured to obtain a third feedback indicative of an exhaust pressure in the exhaust flow path claim 4 , wherein the controller is ...

System and methods for diagnosing premature refueling shutoff

A method for localizing restrictions in a fuel system during refueling, comprising: monitoring fuel tank pressure, fuel vapor canister temperature, and evaporative leak check module pressure during a refueling event; and responsive to a premature shutoff event, indicating a location of a restriction among a plurality of locations based on whether monitored pressure and temperature changes during the refueling event are greater than respective thresholds. In this way, the cause of a premature shutoff event may be diagnosed without requiring additional sensors within the fuel system.

TEMPERATURE SENSOR DEVICE

To obtain a temperature sensor device having high reliability and high sensitivity without cost increase. This temperature sensor device includes: a housing provided with a temperature sensor module having a temperature detection element and an external connection terminal connected to the temperature detection element via a lead wire, which are integrated using a first formation member made from a thermoplastic resin, the temperature sensor module being covered with a second formation member made from a thermoplastic resin, so as to form a connector for connecting the external connection terminal to an external signal processing circuit; and a case into which the temperature sensor module is press-fitted and which is opposed to the housing, wherein the first formation member and the second formation member are welded to each other. 1. A temperature sensor device comprising:a housing provided with a temperature sensor module having a temperature detection element and an external connection terminal connected to the temperature detection element via a lead wire, which are integrated using a first formation member made from a thermoplastic resin, the temperature sensor module being covered with a second formation member made from a thermoplastic resin, so as to form a connector for connecting the external connection terminal to an external signal processing circuit; anda case into which the temperature sensor module is press-fitted, the case being provided so as to be opposed to the housing, whereinthe first formation member and the second formation member are welded to each other.2. The temperature sensor device according to claim 1 , whereinthe temperature sensor module has a flange protruding therearound and made from the first formation member, andthe flange and the second formation member are welded to each other.3. The temperature sensor device according to claim 1 , whereinthe first formation member forming the temperature sensor module is formed so as to be ...

CONTROL SYSTEM FOR INTERNAL COMBUSTION ENGINE

An object is to acquire a humidity of gas compressed by a compressor accurately, in a control system for an internal combustion engine that executes control concerning a water content in intake gas passing through an intercooler, based on an output signal from a humidity sensor. A humidity sensor is provided in an intake passage between a compressor and an intercooler. Therefore, a behavior of a humidity of gas that is compressed by the compressor and flows in the intake passage at an upstream side from the intercooler can be accurately grasped. The humidity sensor is desirably provided in the intake passage directly downstream from the compressor. 1. A control system for an internal combustion engine comprising a compressor that is configured to compress intake gas flowing in an intake passage of an internal combustion engine , an intercooler that is configured to cool the intake gas compressed by the compressor , and a humidity sensor that is configured to measure a humidity of the intake gas flowing in the intake passage , and being configured to execute control concerning a water content in the intake gas passing through the intercooler at a time of driving the compressor , based on an output signal from the humidity sensor ,wherein the humidity sensor is provided in the intake passage between the compressor and the intercooler.2. The control system according to claim 1 ,wherein the humidity sensor is provided directly downstream of the compressor.3. The control system according to claim 1 ,wherein the control is control an amount of condensed water generated in the intercooler is restrained equal to or smaller than an allowable amount.4. The control system according to claim 1 , further comprising:an EGR device that is configured to recirculate a part of exhaust gas flowing in an exhaust passage at a downstream side from a turbine connected to the compressor to the intake passage at an upstream side from the compressor. The present invention relates to a ...

METHOD OF DETECTING A CLOGGING OF A FUEL INJECTOR IN AN INTERNAL COMBUSTION ENGINE

A method and apparatus is disclosed for testing a fuel injector of an internal combustion engine equipped with a plurality of fuel injectors to detect injector clogging. A test injector is switched off. A requested value of a fuel quantity to be injected by the other fuel injectors of the plurality of fuel injectors is adjusted to operate the internal combustion engine in idle mode. A value of an oxygen concentration in an exhaust gas is measured. A value of a fuel quantity that has been injected is estimated as a function of the measured value of the oxygen concentration. A fuel quantity drift of each fuel injector is calculated as a function of the requested values and the estimated values of the fuel quantity provided by the injector tests. Each fuel quantity drift is used to identify if the corresponding fuel injector is clogged. 111-. (canceled)12. A method of detecting a clogging of a fuel injector of an internal combustion engine equipped with a plurality of fuel injectors , the method comprising:testing each fuel injector of the plurality of fuel injectors, wherein the testing includes:switching off a test injector;adjusting a requested value of a fuel quantity to be injected by the plurality of fuel injectors excluding the test injector to operate the internal combustion engine in an idle mode;measuring a value of an oxygen concentration in an exhaust gas; andestimating a value of a fuel quantity that has been injected as a function of the measured value of the oxygen concentration;calculating a fuel quantity drift of each test injector as a function of the requested values and the estimated values of the fuel quantity provided by all injector tests; andusing each fuel quantity drift to identify when the test injector is clogged.13. The method of claim 12 , wherein each testing further comprises calculating a difference between the product of the requested value of the fuel quantity by a correction factor and the estimated value of the fuel quantity claim ...

BIG DATA-BASED DRIVING INFORMATION PROVISION SYSTEM AND METHOD THEREOF

A big data-based driving information provision system may include a sensor configured to measure and collect state monitoring data of an engine, vehicle monitoring data, and vibration data; an engine electronic control unit (ECU) configured to generate a combustion characteristic index (CCI) data of the engine; and a graphic controller configured to generate a primary deep learning model which classifies the big data including the state monitoring data, the vehicle monitoring data, the vibration data, and the CCI into at least two categories. 1. A big data-based driving information provision system , comprising:a sensor configured to measure and collect state monitoring data of an engine, vehicle monitoring data, and vibration data;an engine electronic control unit (ECU) configured to generate a combustion characteristic index (CCI) data of the engine; anda graphic controller configured to generate a primary deep learning model, wherein the primary deep learning model is configured to classify big data including the state monitoring data, the vehicle monitoring data, the vibration data, and the CCI data into at least two data categories.2. The big data-based driving information provision system of claim 1 , wherein the primary deep learning model is configured to classify combinations of correlation coefficients between the big data into the at least two data categories.3. The big data-based driving information provision system of claim 2 , wherein the primary deep learning model is configured to classify the big data into clusters by applying a k-means algorithm to the correlation coefficients.4. The big data-based driving information provision system of claim 3 , wherein the primary deep learning model is configured to apply claim 3 , after the k-means algorithm is applied claim 3 , a Gaussian mixture model (GMM) and a deep neural network (DNN).5. The big data-based driving information provision system of claim 1 , wherein the ECU is configured to calculate the ...

SYSTEM AND METHOD FOR DETECTING A FAULT CONDITION ASSOCIATED WITH A VALVETRAIN OF AN ENGINE

A system for detecting a fault condition in a valvetrain of an engine is configured to measure one or more operating parameters associated with the engine and determine if the operating parameters satisfy pre-defined corresponding boundary conditions. If so, a pair of values of at least one performance parameter is measured corresponding to measurement on a first and second bank of cylinders present on the engine. The difference between the pair of values is determined and used to compute at least one measure of variation for the at least one performance parameter in a time segment. If the at least one measure of variation for the at least one performance parameter exceeds a pre-defined limit for the engine, the valvetrain is flagged as faulty. 1. A fault detection system for an engine having a first bank of cylinders and a second bank of cylinders therein , the fault detection system comprising:a first plurality of sensors disposed on the engine, the first plurality of sensors configured to measure one or more operating parameters of the engine;a second plurality of sensors disposed on the engine, the second plurality of sensors being configured to measure a pair of values of at least one performance parameter associated with the engine, wherein the at least one performance parameter, the pair of values corresponding to respective measurements of the at least one performance parameter taken from each of the first bank of cylinder and the second bank of cylinders; and determine a difference in magnitude of the pair of values for the at least one performance parameter;', 'compute at least one measure of variation of the at least one performance parameter in a time segment;', 'determine if the measure of variation of the at least one performance parameter exceeds a pre-defined limit for the engine, and if so:', 'determine if the measure of variation persists above the pre-defined limit for the engine for at least a pre-defined period of time and if so, flag the ...

METHOD FOR IDENTIFYING FAULTY COMPONENTS OF A FUEL INJECTION SYSTEM

A method for identifying faulty components of a fuel injection system is disclosed, wherein a secondary injection is performed individually by each injector during a test routine, after the secondary injection several predefined parameters of the fuel injection system are determined, and a combined assessment of the determined parameters is used to draw conclusions about whether or not components of the fuel injection system are faulty. 1. A method for identifying faulty components of a fuel injection system having one or more injectors , the method comprising:performing a secondary injection individually by each injector during a test routine,after the secondary injection several, determining predefined parameters of the fuel injection system, andgenerating a combined assessment of the determined predefined parameters and determining whether or not components of the fuel injection system are faulty based upon the combined assessment.2. The method as claimed in claim 1 , wherein the fuel injection system comprises a fuel rail claim 1 , the one or more injectors are controlled using an injector voltage claim 1 , and the predefined parameters are the pressure of the fuel rail claim 1 , the injector voltage and an air ratio of the fuel injection system.3. The method as claimed in claim 2 , further comprising claim 2 , if the rail pressure claim 2 , the injector voltage and the air ratio each lies in an expected range claim 2 , identifying a fuel injection quantity of the secondary injection as fault-free.4. The method as claimed in claim 3 , further comprising claim 3 , if the injector voltage lies in the associated expected range claim 3 , and the rail pressure and air ratio lie outside the respective expected range claim 3 , identifying a flow quantity of the one or more injectors as faulty.5. The method as claimed in claim 3 , wherein the fuel injection system comprises a lambda sensor claim 3 , and the method further comprises claim 3 , if the injector voltage and ...

INDUCTION DIAGNOSTICS FOR SKIP FIRE ENGINES

A variety of methods, diagnostic modules and other arrangements for detecting air induction faults during operation of an internal combustion engine are described. In some embodiments, the intake manifold pressure is monitored with the intake pressure being read for each induction opportunity. Induction faults may be detected based at least in part on a comparison of the manifold pressure readings for sequential induction opportunities. In some embodiments, an induction fault is identified when the difference between the manifold pressure associated with an induction opportunity and the immediately preceding induction opportunity exceeds an induction fault threshold. 1. A method of detecting an induction fault in an internal combustion engine having an intake manifold that supplies air to at least one working chamber of the internal combustion engine , and an intake manifold pressure sensor configured to sense an air pressure within the intake manifold , the method comprising:obtaining a first pressure reading indicative of the intake manifold pressure at a time associated with a first working chamber air induction opportunity;obtaining a second pressure reading indicative of the intake manifold pressure at a time associated with a second working chamber air induction opportunity that follows the first working chamber induction opportunity, the second air induction opportunity being the next air induction opportunity following the first air induction opportunity; anddetermining whether an induction fault has occurred in association with the second air induction opportunity based at least in part on the first and second pressure readings.2. A method as recited in further comprising:determining a difference between the first and second pressure readings;comparing the difference to a threshold; andidentifying an induction fault for the second air induction opportunity when the difference is beyond the threshold.3. A method as recited in wherein each pressure reading is ...

Engine monitoring

A method and system for engine monitoring comprises a monitoring device and a remote device that are in communication. The monitoring device is incorporated in or directly attached to the internal combustion engine and functions to sense a characteristic of the internal combustion engine. The monitoring device is configured to transmit data representative of the sensed characteristic to a remote application running on a remote device. The remote device is configure to produce engine monitoring data from the transmitted data using engine characterising data stored on the remote device.

METHOD AND SYSTEM FOR DIAGNOSING COMMON RAIL DIESEL ENGINE

Disclosed are a method and a system for diagnosing a common rail diesel engine. The method for diagnosing a common rail diesel engine may include setting a time when a pressure of a common rail becomes a first set pressure to a diagnosis start time and neglecting a state of the common rail until the pressure of the common rail decreases from the first set pressure to a second set pressure which is a diagnosis end pressure, verifying a time when the pressure of the common rail becomes the second set pressure and determining the time as a diagnosis end time when the pressure of the common rail becomes the second set pressure, calculating a diagnosis time as an elapsed time from the diagnosis start time to the diagnose end time, and diagnosing that fuel leaks from the common rail when the diagnosis time is shorter than a diagnosis set time by comparing the diagnosis time with the diagnosis set time. 1. A method for diagnosing a common rail diesel engine , comprising:determining whether a diagnosis request signal for requesting a diagnosis of the common rail diesel engine is input while the common rail diesel engine is driven;increasing a pressure of a common rail to a set pressure if the diagnosis request signal is input;stopping the common rail diesel engine and neglecting the common rail diesel engine when the pressure of the common rail increases to the set pressure and until the pressure of the common rail decreases to a first set pressure which is a diagnosis start pressure;setting a time when the pressure of the common rail becomes the first set pressure to a diagnosis start time and neglecting a state of the common rail until the pressure of the common rail decreases from the first set pressure to a second set pressure which is a diagnosis end pressure;verifying a time when the pressure of the common rail becomes the second set pressure and determining the time as a diagnosis end time when the pressure of the common rail becomes the second set pressure; ...

METHOD FOR DEFINING LEARNING AREA OF INJECTOR OPENING DURATION CONTROL

A method of determining a learning area of injector opening duration according to the present exemplary embodiment divides an entire control area for controlling opening duration of an injector into a learning map area which needs learning and a reference map area which uses an already prepared reference map as is without learning, and a period from a minimum injection time to a minimum linear injection time of the injector is determined as the learning map area, and a period from the minimum linear injection time to a maximum injection time is determined as the reference map area. 1. A method of determining a learning area of injector opening duration , which divides an entire control area for controlling opening duration of an injector into a learning map s area which needs learning and a reference map area which uses an already prepared reference map as is without learning , whereina period from a minimum injection time to a minimum linear injection time of the injector is determined as the learning map area, and a period from the minimum linear injection time to a maximum injection time is determined as the reference map area.2. The method according to claim 1 , wherein an area in which fuel pressure is between a minimum value of pump driving pressure and limp-home reference pressure is determined as the reference map area regardless of injection time of the injector.3. The method according to claim 2 , wherein if a range in which the fuel pressure is between the limp-home reference pressure and maximum control target pressure is defined as a normal control pressure range claim 2 , an overshoot area claim 2 , in which the fuel pressure temporarily exceeds the normal control pressure range claim 2 , is determined as the reference map area in the determined learning map area.4. The method according to claim 3 , wherein an abnormal high pressure area in which the fuel pressure exceeds the overshoot area is determined as the reference map area regardless of ...

IGNITION MODULE FOR INTERNAL COMBUSTION ENGINE WITH INTEGRATED COMMUNICATION DEVICE

An electronic device for the ignition system of an engine, which may incorporate circuitry for voltage amplification via transformer action, while also containing circuitry for sensing operational parameters, circuitry for calculation of derived values from the sensed data or operational parameters, circuitry for storage of the data and derived values, circuitry for engine system control, and circuitry for the wireless communication of data and derived values. 1. An integrated ignition module for an internal combustion engine , the module comprising:a housing configured for attachment to a chassis;an ignition circuit disposed in the housing;a programmable controller disposed in the housing; anda wireless transceiver disposed in the housing, the transceiver operably and communicably coupled to the controller to wirelessly exchange data between the controller and an external electronic device.2. The module according to claim 1 , wherein the ignition circuit is controlled by the controller and includes an ignition coil disposed in the housing.3. The module according to claim 2 , wherein the transceiver is oriented out of phase with electromagnetic radiation generated by the ignition coil.4. The module according to claim 2 , wherein the ignition circuit further includes a charging coil and an energy storage device.5. The module according to claim 1 , further comprising at least one air temperature sensor operable to sense and transmit a temperature of ambient combustion air and at least one engine temperature sensor operable to sense and transmit an operating temperature of the engine claim 1 , the controller configured to detect the transmitted temperatures.6. The module according to claim 5 , further comprising an engine speed sensor operable to sense and transmit a measured speed of the engine to the controller.7. The module according to claim 6 , wherein the controller is operably coupled to an actuator associated with a choke valve that controls a flow of ambient ...

Determining the Size of a Leak in a Fuel Tank System

The disclosure relates to a method for determining a size of a leak in a fuel tank system. The method includes: starting an internal combustion engine; calculating a stoppage time for a vehicle and/or a temperature difference between the fuel in the fuel tank system and the environment; and checking whether at least one of a plurality of diagnostic conditions is fulfilled. A first diagnostic condition is fulfilled when the stoppage time is longer than a predetermined minimum stoppage time. A second diagnostic condition is fulfilled when the temperature difference is smaller than a predetermined maximum temperature difference. Additionally, when at least one of the plurality of diagnostic conditions is fulfilled, the method includes: evacuating the fuel tank system; recording a time profile of the pressure in the fuel tank system; and determining the size of a leak based on the recorded time profile of the pressure. 1. A method for determining a size of a leak in a fuel tank system of a vehicle having an internal combustion engine , the method comprising:starting the internal combustion engine;calculating a stoppage time for the vehicle and/or a temperature difference between the fuel in the fuel tank system and a vehicle environment; a first diagnostic condition of the plurality of diagnostic conditions is fulfilled when the stoppage is longer than a predetermined minimum stoppage time, and', 'a second diagnostic condition of the plurality of diagnostic conditions is fulfilled when the temperature difference is smaller than a predetermined maximum temperature difference, and', shutting off the fuel tank system,', 'waiting until a predetermined waiting time has elapsed,', 'evacuating the fuel tank system,', 'recording a time profile of a pressure in the fuel tank system and', 'determining the size of a leak in the fuel tank system based on the recorded time profile of the pressure., 'when at least one of the plurality of diagnostic conditions is fulfilled, carrying ...

SYSTEM AND METHOD FOR SENSOR COOLING

A system located within an engine compartment is provided. The system includes a sensor mounted proximate to an engine. The system also includes a bleed line provided from an intake line associated with the engine. The bleed line is configured to provide a supply of compressed air to the sensor. 1. A system located within an engine compartment , the system comprising:a sensor mounted proximate to an engine; anda bleed line provided from an intake line associated with the engine, the bleed line configured to provide a supply of compressed air to the sensor.2. The system of claim 1 , wherein the engine includes a turbo charged engine.3. The system of claim 1 , wherein the bleed line is provided downstream of an after cooler.4. The system of claim 3 , wherein the after cooler includes at least one of an air to air after cooler and an intercooler.5. The system of claim 3 , wherein the supply of compressed air further comprises a cooled airflow exiting the after cooler.6. The system of claim 1 , wherein the bleed line includes a flexible conduit disposed between the intake line and the sensor.7. The system of claim 1 , wherein a nozzle is provided at an end of the bleed line proximate to the sensor.8. The system of further comprising a baffle positioned proximate to the sensor claim 1 , the baffle configured to direct the supply of compressed air towards the sensor.9. The system of claim 1 , wherein the bleed line is connected to an intake manifold of the engine.10. A method comprising:providing a sensor proximate to an engine within an engine compartment;providing a bleed line from an intake line associated with the engine; anddirecting a flow of compressed air towards the sensor through the bleed line.11. The method of claim 10 , wherein providing the bleed line from an intake line associated with the engine further comprises providing the bleed line downstream of an after cooler.12. The method of claim 10 , wherein providing the bleed line from an intake line ...

METHOD FOR SENSING REVERSE ROTATION OF ENGINE IN VEHICLE USING TOOTH PERIOD RATIO OF CRANKSHAFT

A method for sensing reverse rotation of an engine in vehicle includes: detecting tooth period ratios using a crankshaft angle detection sensor and storing the detected tooth period ratios in a buffer of an electronic control unit (ECU); calculating a tooth period ratio between a measured tooth period and a tooth period measured just before thereof; determining whether the tooth period ratio is greater than a first reference value; updating the tooth period value stored in the buffer by measuring the recent tooth period if the tooth period ratio is greater than the first reference value; calculating the tooth period ratio using the updated tooth period value; and determining a reverse rotation state of the engine by checking whether the change shows a predetermined pattern after a change in the value of the tooth period ratio is observed. 1. A method for sensing a reverse rotation of an engine in a vehicle , wherein a pulse signal is received from a crankshaft angle detection sensor provided to detect a crankshaft angle of the engine and a reverse rotation state of the engine in the vehicle is determined based on a tooth period ratio between a falling edge and the next falling edge of the pulse signal , the method comprising:detecting, by an electronic control unit (ECU), tooth period ratios using the crankshaft angle detection sensor and storing the detected tooth period ratios in a buffer of the ECU;calculating, by the ECU, a first tooth period ratio which is a ratio between a first measured tooth period and a previous tooth period measured just before the first measured tooth period;determining, by the ECU, whether a value of the first tooth period ratio is greater than a first reference value;updating, by the ECU, a tooth period value, which is stored in the buffer previously by measuring a second tooth period, when the first tooth period ratio is greater than the first reference value;calculating, by the ECU, a second tooth period ratio using a value of e ...

VEHICLE COOLANT FLOW AND COOLANT QUALITY SENSOR ASSEMBLY

A vehicle coolant flow and coolant quality sensor assembly for use in an internal combustion engine (ICE) vehicle, a hybrid vehicle, or an electric vehicle. The coolant flow sensor includes a dual coil magnetic flow meter or the like for measuring coolant flow rate and the coolant quality sensor includes a sealed hot wire anemometer or the like and an integrated temperature sensor or the like for measuring coolant quality (e.g., ability to absorb heat) and coolant temperature, respectively. The various sensors are disposed in an integrated housing through which coolant is transported. 1. A vehicle coolant flow and coolant quality sensor assembly , comprising:a housing defining a coolant flow channel communicating coolant from a first port to a second port;a coolant flow sensor disposed at least partially within the coolant flow channel and contacting the coolant, wherein the coolant flow sensor is operable for measuring flow of the coolant; anda coolant quality sensor disposed at least partially within the coolant flow channel and contacting the coolant, wherein the coolant quality sensor is operable for measuring ability to absorb heat of the coolant.2. The vehicle coolant flow and coolant quality sensor assembly of claim 1 , further comprising a coolant temperature sensor disposed at least partially within the coolant flow channel and contacting the coolant claim 1 , wherein the coolant temperature sensor is operable for measuring temperature of the coolant.3. The vehicle coolant flow and coolant quality sensor assembly of claim 1 , wherein the coolant flow sensor comprises a dual coil magnetic flow meter.4. The vehicle coolant flow and coolant quality sensor assembly of claim 1 , wherein the coolant quality sensor comprises a sealed hot wire anemometer.5. The vehicle coolant flow and coolant quality sensor assembly of claim 1 , further comprising a printed circuit board comprising one or more of a microcontroller and a transceiver coupled to one or more of the ...

TORQUE MONITORING DEVICE

A torque monitoring device monitors the occurrence of an abnormal torque state causing an estimated torque as an estimated value for an actual torque of an internal combustion engine to differ from an engine-requested torque required of the internal combustion engine and includes: a discrete value setup unit configured to increase a discrete value correspondingly to increase in a difference quantity between the estimated torque and the engine-requested torque; an accumulation unit configured calculate an accumulation value of the discrete value; and a determination unit configured to determine that the abnormal torque state occurs when the accumulation value becomes larger than or equal to a predetermined abnormality determination threshold value. 1. A torque monitoring device configured to monitor occurrence of an abnormal torque state in which an estimated torque , which is an estimated value for an actual torque of an internal combustion engine , differs from an engine-requested torque required of the internal combustion engine , the torque monitoring device comprising:a discrete value setup unit configured to increase a discrete value correspondingly to increase in a difference quantity between the estimated torque and the engine-requested torque;an accumulation unit configured to implement accumulation of the discrete value to calculate an accumulation value; anda determination unit configured to determine that the abnormal torque state occurs when the accumulation value becomes larger than or equal to a predetermined abnormality determination threshold value, whereinthe discrete value setup unit is configured to set the discrete value such that the discrete value does not exceed a predetermined upper limit guard value.2. The torque monitoring device according to claim 1 , whereinthe upper limit guard value is variably set depending on an operation state of the internal combustion engine.3. The torque monitoring device according to claim 1 , whereinthe ...

HEAT GENERATION RATE WAVEFORM CALCULATION DEVICE OF INTERNAL COMBUSTION ENGINE AND METHOD FOR CALCULATING HEAT GENERATION RATE WAVEFORM

A combustion speed, for example, is estimated or evaluated, with a required accuracy, more simply than the conventional art, while reducing man-hours to produce a heat generation rate waveform of an internal combustion engine. An increase rate of a heat generation rate relative to a change in a crank angle in a heat generation rate increasing period (e.g., a first-half combustion period a) in which the heat generation rate increases after ignition of an air-fuel mixture is defined as a heat generation rate gradient b/a that is one of characteristic values of the heat generation rate waveform. The heat generation rate gradient is estimated based on a fuel density (e.g., fuel density ρat heat generation rate maximum time) at a predetermined time set in advance in the heat generation rate increasing period so as to produce the heat generation rate waveform using the estimated heat generation rate gradient. 1. A heat generation rate waveform calculation device of an internal combustion engine , the device being configured to calculate a heat generation rate waveform of a spark-ignition internal combustion engine ,wherein an increase rate of a heat generation rate relative to a change in a crank angle in a heat generation rate increasing period in which the heat generation rate increases after ignition of an air-fuel mixture is defined as a heat generation rate gradient that is one of characteristic values of the heat generation rate waveform, andwherein the heat generation rate gradient is estimated based on an in-cylinder fuel density at a predetermined time that is set in advance in the heat generation rate increasing period, so that the heat generation rate waveform is calculated using the estimated heat generation rate gradient.2. The heat generation rate waveform calculation device of an internal combustion engine according to claim 1 ,wherein an average increase rate of the heat generation rate in a period from the ignition time of the air-fuel mixture to a heat ...

SYNCHRONOUS REAL TIME DYNAMOMETER AND CONTROL SYSTEM

A synchronous dynamometer assembly for applying a load to an engine during at least one portion of the combustion cycle of the engine in a synchronised manner so as to be repeatable each cycle of the engine comprises a dynamometer having a non-inductive load which is applied to the engine during operation to vary the speed of the engine. The non-inductive load is variable by varying the current delivered to it. Crankshaft monitoring means monitors the rotational position of the engine crankshaft, and combustion detection means detects a combustion event in a cylinder of the engine. Control means is operatively connected to the dynamometer for applying the load from the dynamometer to the engine for at least one part of the combustion cycle in real time such that the different loads may be applied to the engine for different parts of the combustion cycle. 1. A method of a controlling the movement of a piston during the combustion cycle of an engine , comprising the steps of connecting a synchronous dynamometer assembly to the engine so as to enable a variable load to be applied to the crankshaft of the engine , the synchronous dynamometer assembly comprising a dynamometer which connects to the engine through an electrical generator , the dynamometer having a variable non-inductive load which can be applied to the output of the electrical generator to vary the speed of the engine , crankshaft monitoring means for monitoring the rotational position of the engine crankshaft , combustion detection means for detecting a combustion event in a cylinder of the engine , and control means operatively connected to the dynamometer for applying the non-inductive electrical load to the output of the electrical generator for at least one part of the combustion cycle in real time such that the non-inductive electrical load is variable for different parts of the combustion cycle , monitoring the rotational position of the crankshaft , monitoring the combustion events in the engine , ...

FUEL-FILTER MALFUNCTION DETECTION DEVICE

A fuel-filter malfunction detection device detects a clogging of a fuel filter when specified conditions are satisfied. In a clogging detection, a command discharge quantity to a high-pressure pump is increased more than a total of a fuel injection quantity and a leakage of the fuel supply system while a pressure-reducing valve is closed. When the fuel filter is clogged, a discharge quantity of the high-pressure pump is decreased relative to the command discharge quantity and a differential pressure is generated between an estimated common-rail pressure and an actual common-rail pressure. When an integrated moving average of the averages of the differential pressure is greater than or equal to a specified value, an ECU determines that the fuel filter has a malfunction. Then, a malfunction flag is turned ON. 1. A fuel-filter malfunction detection device applied to a fuel supply system which is provided with a high-pressure pump pressurizing a fuel which will be supplied to a fuel injector of an internal combustion engine , a fuel filter arranged upstream of the high-pressure pump for removing a foreign matter from the fuel , and a pressure sensor arranged upstream of the high-pressure pump for detecting a pressure of the fuel which will be supplied to the fuel injector , the fuel-filter malfunction detection device comprising:a discharge control portion increasing or decreasing a discharge quantity of the high-pressure pump when a specified malfunction detection condition is established;a pressure obtaining portion obtaining a fuel pressure which the pressure sensor detects; anda malfunction determination portion determining whether the fuel filter has a malfunction based on the fuel pressure obtained by the pressure obtaining portion, when the discharge control portion increases or decreases the discharge quantity of the high-pressure pump with the specified malfunction detection condition established.2. A fuel-filter malfunction detection device according to claim ...

COOLING DEVICE ANOMALY DIAGNOSING APPARATUS

An anomaly diagnosing apparatus is adapted for a cooling device in an internal combustion engine. The apparatus is configured to execute an enlarging process, a rate calculating process, and an anomaly determining process. The enlarging process includes enlarging the cross-sectional area of the flow passage between an inner channel and an outer channel in the cooling device. The rate calculating process includes calculating a reference rate for a rate of rise of temperature of cooling water. The anomaly determining process includes determining that an anomaly is present in the check valve if a rate of rise of a detection value of cooling water temperature is smaller than the reference rate. The rate calculating process includes calculating the reference rate such that the reference rate has a smaller value in a case where the enlarging process is executed than in a case where the enlarging process is not executed. 1. A cooling device anomaly diagnosing apparatus adapted for a cooling device in an internal combustion engine , wherein an inner channel serving as a cooling channel located inside the internal combustion engine,', 'an outer channel serving as a cooling channel located outside the internal combustion engine, the outer channel constituting, together with the inner channel, a loop path in which cooling water is circulated, and', 'a regulating device capable of adjusting a cross-sectional area of a flow passage between the inner channel and the outer channel by an electronic control, the regulating device including a check valve configured to open when a pressure inside is higher than a pressure in the outer channel by an amount greater than or equal to a predetermined amount,, 'the cooling device includes'} an enlarging process of enlarging the cross-sectional area of the flow passage by operating the regulating device such that the cross-sectional area is larger in a case where a rotational speed of a crankshaft of the internal combustion engine is at a ...

REMOTE SERVER

At least an embodiment may provide a remote server that can predict overheating of an engine. A remote server may receives an engine rotational speed, an engine load factor, and a cooling-water temperature. The remote server calculates a moving average of the engine load factor during a predetermine time, and calculates a correlation between the moving average of the engine load factor and the cooling-water temperature. If the correlation during a predetermined period is in the status of a predetermined difference from the correlation up to the predetermined period, the remote server predicts occurrence of overheating in a swing working vehicle that is used by a user. 1. A remote server that receives information on a rotational speed of an engine , information on a load factor of the engine , and information on a temperature of cooling water of the engine , wherein the remote server calculates a moving average of the load factor during a predetermined time , and calculates a correlation between the moving average of the load factor of the engine and the temperature of the cooling water , and if the correlation during a predetermined period is in a status of a predetermined difference from the correlation before the predetermined period , the remote server predicts occurrence of overheating.2. A remote server that receives information on a rotational speed of an engine , information on a load factor of the engine , and information on a temperature of cooling water of the engine , whereinthe remote server calculates an engine output from the information on the rotational speed of the engine and the information on the load factor of the engine, calculates a moving average of the engine output during a predetermined time, and calculates a correlation between the moving average of the engine output and the temperature of the cooling water, and if the correlation during a predetermined period is in a status of a predetermined difference from the correlation before the ...

Fleet Management System

In one example, fleet devices are monitored. The fleet devices include engines. A controller, such as an engine controller or centralized controller, receives sensor data indicative of a load on the engine from one or more of the fleet devices. The controller analyzes the load from the sensor data to identify a management function. The controller generates a message including the management function. 1. A method comprising:receiving sensor data indicative of a load on an engine from one or more fleet devices;analyzing, using a processor, the load from the sensor data to identify a management function; andgenerate, using the processor, a message including the management function.2. The method of claim 1 , wherein the sensor data includes throttle position data and manifold pressure data.3. The method of claim 2 , further comprising:accessing an expected value for manifold pressure according to the throttle position data;comparing the manifold pressure data to the expected value for manifold pressure; andgenerating a warning message for the management function when the manifold pressure data exceeds the expected value by a threshold amount.4. The method of claim 1 , further comprising:calculating a maintenance interval for the management function.5. The method of claim 4 , wherein the sensor data includes injection time data indicative of an operation of one or more fuel injectors of the engine and the maintenance interval is calculated as a function of the injection time data.6. The method of claim 4 , wherein the sensor data includes oil data indicative of a state of the oil of the engine and the maintenance interval is calculated as a function of the oil data claim 4 , wherein the state of the oil includes an oil quality claim 4 , an oil level claim 4 , or both.7. The method of claim 1 , wherein the sensor data is throttle position of the engine indicative of a mechanical device connected to the engine.8. The method of claim 7 , wherein the mechanical device is a ...

METHOD FOR MAXIMIZING THE FORMATION OF DEPOSITS IN INJECTOR NOZZLES OF GDI ENGINES

The invention relates to the technology of gasoline direct injection (GDI) in automotive engines. In this context, the invention provides a method for maximizing the formation of deposits in injector nozzles of GDI engines, said method including at least one test cycle, each test cycle including at least one testing step in which a predetermined condition of speed and load of the GDI engine is maintained for a specified period of time, wherein, in said cycle, in at least one testing step, the engine speed is maintained between 1300 and 3700 rpm, the engine load is maintained between 10 and 80% and the specified period of time is from 10 to 200 minutes. Thus, the method of the invention is able to reproduce severe conditions of deposition of material in a few days, so that, in a short period of time, the test fuel can be assessed for tendency to form deposits. 1. Method for maximizing the formation of deposits in injector nozzles of GDI engines , characterized in that it comprises at least one test cycle , each test cycle comprising at least one testing step in which a predetermined condition of speed and load of the GDI engine is maintained for a specified period of time ,wherein, in said cycle, there is at least one testing step:the engine speed is maintained between 1300 and 3700 rpm;the engine load is maintained between 10 and 80%; andthe specified period of time is from 10 to 200 minutes.2. Method according to claim 1 , characterized in that each one of the at least one test cycle comprises at least five testing steps.3. Method according to claim 1 , characterized in that a first testing step claim 1 , which lasts from 70 to 110 minutes claim 1 , comprises an engine speed between 1300 and 1700 rpm and an engine load between 25 and 35%.4. Method according to claim 1 , characterized in that a second testing step claim 1 , which lasts from 160 to 200 minutes claim 1 , comprises an engine speed between 1800 and 2200 rpm and an engine load between 10 and 20%5. Method ...

CONTROL DEVICE OF INTERNAL COMBUSTION ENGINE

A control device of an internal combustion engine in a simple configuration capable of finely detecting the combustion state of the internal combustion engine, for example, an occurrence of knocking from an ionic current signal is provided. A control device of an internal combustion engine having an ionic current value detection unit that detects an ionic current value during combustion including an ionic current signal processing unit that performs signal processing of the ionic current value and a detection unit that detects a combustion state of the internal combustion engine based on a processing result by the ionic current signal processing unit , wherein the ionic current signal processing unit includes a differentiating unit that calculates a differential value of the ionic current value is provided. 1. A control device of an internal combustion engine having an ionic current value detection unit that detects an ionic current value during combustion , the control device comprising:an ionic current signal processing unit that performs signal processing of the ionic current value; anda detection unit that detects a combustion state of the internal combustion engine based on a processing result by the ionic current signal processing unit, whereinthe ionic current signal processing unit includes a differentiating unit that calculates a differential value of the ionic current value.2. The control device of an internal combustion engine according to claim 1 , wherein the ionic current signal processing unit further includes a frequency analyzer that conducts frequency analysis of the differential value.3. The control device of an internal combustion engine according to claim 1 , wherein the ionic current signal processing unit further includes a frequency analyzer that conducts frequency analysis of the differential value claim 1 , an integrating unit that calculates an integral value of the ionic current value claim 1 , and a normalization unit that calculates a ...

System and method for detecting malfunctioning turbo-diesel cylinders

According to the invention, a diagnostic system is provided for diagnosing a misfire condition is provided of individual engine cylinders in a turbocharged diesel engine having at least a first and a second cylinder associated with a common exhaust path. The system comprises a pressure sensor in an exhaust path, for measuring a pressure value; a crankshaft position sensor, for detecting a rotational crankshaft position; and a processor unit for reading the pressure sensor and the crankshaft position sensor. The processor unit is arranged for performing acts of: sampling pressure values of the pressure sensor in the common exhaust path as a function of crankshaft angle position; attributing for each cylinder fired in succession at least two sampling values (Pα, Pβ) for at least two successive crankshaft angle positions of a pressure pulse during a cylinder firing operation; determining a boundary for a coordinate (Pα, Pβ) formed by a tuple of sampling values (Pα, Pβ); diagnosing a misfire condition if the coordinate formed by said tuple of sampling values is outside the boundary.

PROCEDURE FOR OBTAINING AND CONTROLLING CLEAN ENERGY BY USING WATER, CONVERTING WATER INTO FUEL THROUGH EXTRACTION AND USE OF HYDROGEN AND RESPECTIVE MOLECULAR GAS EXPANSION EQUIPMENT

A procedure is provided for obtaining and controlling clean energy by using water, converting water into fuel through extraction and use of hydrogen and respective molecular gas expansion equipment, pertains to the field of application of energy generating processes and equipment, converting water into fuel by extracting hydrogen and oxidizer from water, driving them directly to an engine's combustion chamber, which process uses the water in the form in which it is found, breaking molecules and separating oxygen from hydrogen, where the breaking and separating step is refined and expanded in real-time, converting water to fuel for immediate burn. 1. A procedure for obtaining and controlling clean energy by using water , converting water into fuel through extraction and use of hydrogen and respective molecular gas expansion equipment , energy generating processes and equipment , comprising: converting water into fuel by extracting hydrogen (fuel) and oxidizer (oxygen) from water; driving them directly to an engine's combustion chamber; which process uses water in the form in which it is found; breaking molecules and separating oxygen from hydrogen; where said breaking and separating step is refined and expanded in real-time , converting water into fuel for immediate burn.2. The process according to claim 1 , wherein the use of water as raw material throughout different physical states brackish claim 1 , hard claim 1 , dirty claim 1 , salty claim 1 , blurred claim 1 , limpid water and the like.3. The procedure of wherein the possibility of immediate burn of the dissociation result claim 1 , not maintaining gas accumulation (real-time) claim 1 , only producing the necessary volume to perform the action.4. A procedure for obtaining and controlling clean energy by using water claim 1 , converting water into fuel through extraction and use of hydrogen and respective molecular gas expansion equipment” claim 1 , wherein the capacity of separating oxygen molecules from ...

AIR-FUEL RATIO DETECTION DEVICE AND AIR-FUEL RATIO DETECTION METHOD

When an air-fuel ratio detection performed by detecting an output of a downstream sensor, which is a limiting-current type air-fuel ratio sensor arranged at a downstream side of a catalyst in an exhaust passage of an internal combustion engine, and calculating an air-fuel ratio at the downstream side of the catalyst in accordance with the output, if the output is within a predetermined range including an output corresponding to a theoretical air-fuel ratio, a relationship between the output and an air-fuel ratio that is calculated by calculation means is shifted more to a rich side relative to a correspondence relationship between an output of an upstream sensor, which is a similar sensor to the downstream sensor arranged at an upstream side of the catalyst in the exhaust passage of the engine, and an air-fuel ratio.

Agricultural work vehicle and system and method for monitoring state of agricultural work vehicle

An agricultural work vehicle according to an aspect of the invention that can monitor a state of the agricultural work vehicle when the agricultural work vehicle performs agricultural work using a working machine which is attached thereto includes: a vehicle body; a working machine that is attached to the front or rear of the vehicle body and performs agricultural work; an engine that generates a driving force for movement of the vehicle body and work of the working machine; and a monitoring device that determines at least one of whether there is an abnormality in a temperature of a coolant for cooling the engine, whether there is an abnormality in a pressure of an engine oil supplied to the engine, and whether there is an abnormality in the engine when the working machine performs work using the driving force.

METHOD FOR THE COMPUTER-ASSISTED MONITORING OF THE OPERATION OF A TECHNICAL SYSTEM, PARTICULARLY OF AN ELECTRICAL ENERGY-GENERATING INSTALLATION

A method for computer-assisted monitoring of an electrical energy-generating installation, in which output variables (y(t)) of the installation are prognosticated using a data-driven model (NN) based on corresponding input variables (x(t)). A confidence measurement (C(t)) is determined for respective input variables (x(t)), using one or more density estimators (DE), this measurement being higher, the greater the similarity of the input variables (x(t)) to known input variables from training data with which the data-driven model (NN) and the density estimator (DE) are taught. Based thereon, an average weighted deviation (E(t)) is determined between the prognosticated output variables (y(t)) and the output variables (y(t)) actually occurring. If the average weighted deviation (y(t)) exceeds a predetermined threshold (E) successive times, an error in operation is detected and an alarm is issued. 1. A method for the computer-assisted monitoring of the operation of a technical system , wherein the technical system is characterized at corresponding operating times (t) by a state vector comprising a number of input variables (x(t)) and at least one output variable (y(t)) which is to be monitored , wherein:a) the at least one output variable (y(t)) is predicted for respective operating times (t) on the basis of input variables occurring in the operation of the technical system with a data-driven model (NN) which is trained by means of training data from known state vectors;b) at least one density estimator (DE), trained by means of known input variables (x(t)) of the training data, is applied for respective operating times (t) to the number of input variables (x(t)) at the corresponding operating time (t), whereby a confidence measure (C(t)) is defined which is higher the greater the similarity of the input variables (x(t)) at the corresponding operating time (t) to known input variables (x(t)) from the training data;{'sup': '0', 'c) for respective cycles (CY) from a ...

System dedicated to monitoring the physical and/or analogue parameters of the parts of an engine

The invention concerns a system for monitoring physical and/or analogue parameters relative to the parts of an engine, said system comprising at least one electronic control unit ( 30 a ) configured to call up data, via at least one antenna ( 20 a ), from a surface acoustic wave sensor located on one of said parts, characterised by the fact that:—the engine (M) is compartmentalized, each compartment (Ma, . . . , Mf) comprising a plurality of mobile or fixed parts of which the physical and/or analogue parameters need to be monitored,—each of these parts to be monitored is provided with a surface acoustic wave sensor ( 101 a, 102 a, 103 a, . . . , 101 f, 102 f, 103 f ), each of said sensors having a distinct resonance frequency specific to it,—an antenna ( 20 a, . . . , 20 f ) is installed inside each of the compartments (Ma, . . . , Mf), each of said antenna being connected, alone or in pairs, to an electronic control unit ( 30 a, . . . , 30 f, 30 ab, . . . , 30 ef ),—each antenna ( 20 a, . . . , 20 f ) is controlled by the electronic control unit ( 30 a, . . . , 30 f, 30 ab, . . . , 30 ef ) to which it is connected, to simultaneously emit a plurality of distinct frequencies close to the resonance frequencies of the sensors ( 101 a, 102 a, 103 a, . . . , 101 f , 102 f , 103 f ) which are located in the engine compartment (Ma, . . . , Mf) of said antenna, so as to simultaneously communicate with all of these sensors ( 101 a, 102 a , 103 a, . . . , 101 f, 102 f, 103 f ).

KNOCK SENSOR SYSTEMS AND METHODS FOR VALVE RECESSION CONDITIONS

In one embodiment, a method is provided. The method includes receiving a signal representative of an engine vibration transmitted via a knock sensor, wherein the knock sensor is disposed in an engine. The method additionally includes deriving a valve wear measurement during operation of the engine based on the signal. The method further includes communicating the valve wear measure. 1. A method , comprising:receiving a signal representative of an engine vibration transmitted via a knock sensor, wherein the knock sensor is disposed in an engine;deriving a valve wear measurement during operation of the engine based on the signal; andcommunicating the valve wear measurement.2. The method of claim 1 , wherein deriving the valve wear measurement comprises deriving an exhaust valve lift measurement.3. The method of claim 2 , wherein deriving the exhaust valve lift measurement comprises deriving an exhaust valve closing angle based on the signal and then converting the exhaust valve closing angle into the exhaust valve lift measurement.4. The method of claim 1 , wherein deriving the valve wear measurement comprises using at least one row of a lookup table based on the signal.5. The method of claim 1 , wherein deriving a valve wear measurement during operation of the engine based on the signal comprises applying a signal baseline to the signal.6. The method of claim 5 , wherein the signal baseline comprises a valve adjustment baseline claim 5 , a new valve installation baseline claim 5 , a new valve seat installation baseline claim 5 , or a combination thereof.7. The method of claim 1 , wherein deriving a valve wear measurement during operation of the engine based on the signal comprises applying a crank angle measurement.8. The method of claim 1 , wherein deriving the valve wear measurement comprises capturing a second signal via a second knock sensor claim 1 , wherein the second signal is representative of an intake valve closing and wherein the first signal is ...

METHOD FOR DETECTING PRE-IGNITION OF INTERNAL COMBUSTION ENGINE

The invention relates to a method for detecting the pre-ignition of an internal combustion engine comprising: integrating all instantaneous angular accelerations in a feature window to acquire integral values, and judging whether the internal combustion engine is pre-ignited according to the integral values and an pre-ignition threshold in a detection window; the feature window is an angle range corresponding to a top dead center of the compression stroke of the internal combustion engine to 3-5 consecutive signal teeth backward from the top dead center along the rotating direction of a crankshaft; the instantaneous angular accelerations correspond to the signal teeth in the feature window in a one-to-one manner. The method for detecting the pre-ignition of the present application is simple in algorithm and small in amount of calculation, only 3-5 pieces of data in the feature window are required to be numerically integrated, and the abnormal combustion is determined without complicated time-frequency analysis and vibration information reconstruction cylinder pressure; the structure of the internal combustion engine may not need to be modified and the marketization period is short; since the 58-tooth speed sensor is one of the basic configurations of the internal combustion engine, no additional device needs to be added and thus low cost is achieved; and the method has high detection accuracy for both steady-state and transient conditions and also has a good application prospect for the real vehicle environment. 1. A method for detecting the pre-ignition of an internal combustion engine , comprising:integrating all instantaneous angular accelerations in a feature window to acquire integral values, andjudging whether the internal combustion engine is pre-ignited according to the integral values and a pre-ignition threshold in a detection window;wherein the feature window is an angle range corresponding to a top dead center of the compression stroke of the internal ...