СПОСОБ И УСТРОЙСТВО ДЛЯ КАЛИБРОВКИ ДАТЧИКА ДАВЛЕНИЯ

Изобретение относится к двигателестроению, в частности к способам и устройствам для калибровки датчиков давления системы дозирования топлива двигателя внутреннего сгорания. Изобретение позволяет минимизировать разность между опорным давлением и регистрируемым датчиком давлением. Способ калибровки датчика давления системы дозирования топлива двигателя внутреннего сгорания (ДВС) заключается в том, что в системе дозирования топлива имеются насос высокого давления, предназначенный для подачи топлива из области низкого давления (НД) в область высокого давления (ВД), форсунки, управляемые в зависимости от рабочих параметров и предназначенные для дозированной подачи топлива из области высокого давления (ВД) в камеры сгорания ДВС, и датчик давления, предназначенный для измерения давления в области высокого давления (ВД). Преобладающее в области высокого давления (ВД) давление принимают за эталонное или опорное давление. Преобладающее в области высокого давления (ВД) давление измеряют с помощью ...

УСТРОЙСТВО УПРАВЛЕНИЯ ДЛЯ ДВИГАТЕЛЯ ТРАНСПОРТНОГО СРЕДСТВА

Изобретение относится к транспортным средствам. Устройство управления двигателем транспортного средства с электрическим топливным насосом, датчиком давления топлива, электродвигателем запуска двигателя внутреннего сгорания и электрическим аккумулирующим устройством содержит электронный блок управления, выполненный с возможностью: управления электрическим подающим насосом на основе значения, определенного датчиком давления топлива; управления электродвигателем для запуска двигателя внутреннего сгорания и управления электрическим подающим насосом и электродвигателем. Электрическое аккумулирующее устройство подает электрическую мощность на электродвигатель, отдавая предпочтение перед электрическим подающим насосом, когда первая электрическая мощность меньше определенной пороговой величины. Первая электрическая мощность является мощностью, которую аккумулирующее устройство способно выдать в момент запуска двигателя. Улучшаются характеристики запуска двигателя. 4 з.п. ф-лы, 7 ил.

СПОСОБ И УСТРОЙСТВО УПРАВЛЕНИЯ ДЛЯ ДВИГАТЕЛЯ ВНУТРЕННЕГО СГОРАНИЯ

Изобретение относится к управлению двигателем внутреннего сгорания. Техническим результатом является улучшение воспламеняемости в двигателе внутреннего сгорания с прямым впрыском в цилиндры. Предложен способ управления двигателя внутреннего сгорания, включающего в себя клапан впрыска топлива, имеющий множество отверстий для впрыска и выполненный с возможностью непосредственно впрыскивать топливо в цилиндр, и свечу зажигания, выполненную с возможностью формировать канал разряда свечи, после того, как выполняется впрыск топлива, искровое зажигание выполняется в то время, когда образуется турбулентность в воздушном потоке посредством впрыска топлива посредством свечи зажигания, расположенной таким образом, что область разряда размещается посередине между струями топлива, впрыскиваемыми из двух смежных отверстий для впрыска и расположенными в пределах диапазона, в котором образуется турбулентность в воздушном потоке. Также определяют, является или нет сгорание стабильным, и, если сгорание не ...

СПОСОБ, СИСТЕМА ДВИГАТЕЛЯ И СПОСОБ ДЛЯ ДВИГАТЕЛЯ (ВАРИАНТЫ)

... 1. Способ, включающий в себя этапы, на которых:регулируют рабочий цикл насоса высокого давления для исправления ошибки синхронизации сливного клапана на основании функции нулевого потока для насоса высокого давления, причем сливной клапан регулирует поток топлива в камеру сжатия насоса высокого давления, а функция нулевого потока основана на изменении рабочего цикла насоса относительно результирующего изменения давления в направляющей-распределителе для топлива.2. Способ по п. 1, в котором определение функции нулевого потока для топливного насоса высокого давления включает в себя этапы, на которых:подают команду первого рабочего цикла насоса при предотвращении непосредственного впрыска топлива в двигатель и нахождении двигателя в состоянии стабильного холостого хода;ожидают до тех пор, пока давление в направляющей-распределителе для топлива не достигнет установившегося значения, а затем определяют первое давление в направляющей-распределителе для топлива;затем подают команду второго, более ...

УПРАВЛЕНИЕ НАСОСОМ НЕПОСРЕДСТВЕННОГО ВПРЫСКА ТОПЛИВА

КОМПЕНСАЦИЯ КИСЛОРОДОСОДЕРЖАЩИХ ВИДОВ ТОПЛИВА В ДИЗЕЛЬНОМ ДВИГАТЕЛЕ

... 1. Способ управления дизельным двигателем, включающий в себя:определение фактора компенсации топлива на основании количества топлива, впрыснутого на текущем уровне эффективной мощности двигателя, деленного на установленное количество дизельного топлива, необходимого для обеспечения текущего уровня эффективной мощности двигателя; иоценку содержания оксигената в подаваемом в двигатель топливе на основании фактора компенсации топлива.2. Способ по п.1, в котором дополнительно задают топливный тип оксигената, на котором в дальнейшем основывают оценку содержания оксигената в топливе.3. Способ по п.1, в котором заданным типом оксигената является сложный метиловый эфир жирной кислоты.4. Способ по п.1, дополнительно включающий в себя:оценку количества твердых частиц, накопленных на сажевом фильтре дизеля, соединенном с выхлопом двигателя; инаправление команды осуществить регенерацию дизельного сажевого фильтра исходя из оцененного количества накопленных твердых частиц, причем указанное оцененное ...

СПОСОБ (ВАРИАНТЫ) И ТОПЛИВНАЯ СИСТЕМА

... 1. Способ, содержащий этапы, на которых:во время первого состояния, запитывают током соленоидный перепускной клапан топливного насоса непосредственного впрыска только на угловую длительность, основанную на положении поршня топливного насоса непосредственного впрыска; иво время второго состояния, запитывают током соленоидный перепускной клапан на или дольше, чем минимальная угловая длительность, при этом, соленоидный перепускной клапан отключают после того, как достигнуто положение верхней мертвой точки поршня.2. Способ по п. 1, в котором минимальная угловая длительность составляет 10 градусов угла поворота распределительного вала.3. Способ по п. 1, в котором первое состояние включает в себя те случаи, когда объемная доля захвата топливного насоса непосредственного впрыска находится выше порогового значения, а второе состояние включает в себя те случаи, когда объемная доля захвата находится ниже порогового значения.4. Способ по п. 3, в котором пороговое значение объемной доли захвата равно ...

VERFAHREN UND SYSTEME FÜR EINE KRAFTSTOFFEINSPRITZVORRICHTUNG

Es werden Verfahren und Systeme für eine Kraftstoffeinspritzvorrichtung mit Leitung bereitgestellt. In einem Beispiel kann ein Verfahren Anpassen einer Temperatur der Brennkammergase in einer Brennkammer und/oder Anpassen eines Kraftstoffverteilerdrucks als Reaktion auf eine von einer Photodiode der Leitung erfassten Menge an Licht beinhalten.

VERFAHREN ZUM BETREIBEN EINER BRENNKRAFTMASCHINE MIT EINEM KRAFTSTOFFZUMESSSYSTEM

Verfahren zur bedarfsgerechten Wartung eines Injektors

Verfahren zur bedarfsgerechten Wartung eines Injektors (7) in einem Common-Railsystem, bei dem im laufendem Motorbetrieb ein aktueller Betriebspunkt (BP) in Abhängigkeit des Raildrucks (pCR) sowie der Kraftstoff-Einspritzmasse (qV) abgespeichert wird, der aktuelle Betriebspunkt (BP) mit einem Schädigungsfaktor (HSF) multipliziert wird und als Referenz-Einspritzzyklus (REZ) in Abhängigkeit des Raildrucks (pCR) sowie der Kraftstoff-Einspritzmasse (qV) abgespeichert wird, wobei der Schädigungsfaktor (HSF) aus einem Schädigungsfaktor-Kennfeld (12) in Abhängigkeit des Raildrucks (pCR) und der Kraftstoff-Einspritzmasse (qV) ausgelesen wird, bei dem ein Gesamt-Referenzeinspritzzyklus (REZ(ges)) über Summenbildung der Referenz-Einspritzzyklen (REZ) berechnet wird, bei dem ein Belastungsfaktor (HI) in Abhängigkeit des Gesamt-Referenzeinspritzzyklus (REZ(ges)) und der zulässigen Einspritzzyklen (EZ(krit)) berechnet wird und der Belastungsfaktor (HI) als maßgeblich für die Wartungsempfehlung des Injektors ...

Kraftstoffdruckregelsystem

Es wird ein Kraftstoffdruckregelsystem für eine Brennkraftmaschine, mit einem Druckspeicher (6), der Kraftstoff unter Druck bevorratet und der Brennräume (8) der Brennkraftmaschine mit Kraftstoff versorgende Injektoren (7) speist, einer Hochdruckpumpe (9), die einen Kraftstoffmengenstrom dem Druckspeicher (6) zuführt, einem ersten Ventil (PCV), über das Kraftstoff aus dem Druckspeicher (6) abführbar ist, und einem zweiten Ventil (VCV) zur Drosselung des Kraftstoffmengenstroms, bereitgestellt, wobei ein erster Regelkreis (16) mit dem ersten Ventil (PCV) als Stellglied zur Regelung des Drucks im Druckspeicher (6) und ein zweiter Regelkreis (17) mit dem zweiten Ventil (VCV) als Stellglied zur Regelung des Drucks im Druckspeicher (6) vorgesehen sind, und wobei die beiden Regelkreise (16, 17) als Kaskadenregler (15) ausgebildet sind mit dem ersten Regelkreis (16) als Führungsregler und dem zweiten Regelkreis (17) als Folgeregler.

Lastabhaengige Steuerung des Einspritzbeginnes bei Einspritzpumpen mit elektromagnetisch betaetigbaren Steuereinrichtungen

Process for fuel pressure regulation in an internal combustion engine comprises adjusting a high pressure sensor using a low pressure sensor

Process for fuel pressure regulation in an internal combustion engine (1) comprises adjusting a high pressure sensor (4) using a low pressure sensor (6) arranged on the low pressure side (7) of a high pressure pump (2) when the high pressure pump is out of action. An independent claim is also included for a device used for fuel pressure regulation in an internal combustion engine.

Verfahren und Einrichtung zur adaptiven feed-forward-Steuerung der Kraftstoffförderung

Verfahren zum Betrieb eines Einspritzsystems einer dreizylindrigen Brennkraftmaschine, insbesondere eines Kraftfahrzeugs

Die vorliegende Erfindung betrifft ein Verfahren zum Betrieb eines Einspritzsystems einer dreizylindrigen Brennkraftmaschine insbesondere eines Kraftfahrzeugs, wobei die Brennkraftmaschine zwei Bänke (I, II) aufweist, welche durch Einspritzung (100, 105, 110, 115) mittels dreier Einspritzventile mit Kraftstoff versorgt werden, und wobei zwei der drei Einspritzventile der ersten Bank (I) und das dritte Einspritzventil der zweiten Bank (II) zugeordnet sind, und wobei insbesondere vorgesehen ist, dass auf der Grundlage von Kenngrößen der Brennkraftmaschine eine maximale Einspritzdauer wenigstens einer Einspritzung (105) bestimmt wird, bei der eine zeitliche Überlappung (112) von Einspritzungen (100, 105, 110, 115) ausgeschlossen werden kann und dass bei einer Überschreitung der maximalen Einspritzdauer ein die mögliche zeitliche Überlappung (112) entgegenwirkender Eingriff (117) in das Einspritzsystem und/oder die Brennkraftmaschine vorgenommen wird.

Verfahren zum Betreiben einer Brennkraftmaschine mit einem Einspritzsystem und Einspritzsystem zur Durchführung eines solchen Verfahrens

Die Erfindung betrifft ein Verfahren zum Betreiben einer Brennkraftmaschine (1) mit einem Einspritzsystem (3), das einen Hochdruckspeicher (13) aufweist, wobei ein momentaner Hochdruck (p) in dem Hochdruckspeicher (13) mittels eines Hochdrucksensors (23) zeitabhängig überwacht wird. Es ist vorgesehen, dass eine erste Alarmstufe (A1) gesetzt wird, wenna) ein erster vorbestimmter Hochdruck-Grenzwert (p) von dem momentanen Hochdruck (p) für eine vorbestimmte Grenz-Zeitdauer (Δt) ununterbrochen überschritten ist, und/oder wennb) der erste vorbestimmte Hochdruck-Grenzwert (p) durch den momentanen Hochdruck (p) erstmals mit einer vorbestimmten, ersten Grenz-Häufigkeit (H) überschritten ist.

Verfahren und Einrichtung zum Betrieb einer Common-Rail-Kraftstoffeinspritzeinrichtung insbesondere eines Kraftfahrzeugs

Die vorliegende Erfindung betrifft ein Verfahren und eine Einrichtung zum Betrieb einer Kraftstoffeinspritzeinrichtung insbesondere eines Kraftfahrzeugs, bei der Kraftstoff unter Hochdruck in einen Hochdruckspeicher (1) gefördert wird, dessen Druck mittels einer Druckregelung gesteuert wird und aus dem Kraftstoff zur Einspritzung über wenigstens ein Kraftstoffeinspritzventil (14) gesteuert durch eine Steuereinrichtung (7) entnommen wird, und bei der Mittel zur Erkennung einer Mengenbilanzverletzung von dem Hochdruckspeicher (1) zugeführter und aus dem Hochdruckspeicher (1) abgeführter Kraftstoffmenge vorgesehen sind, wobei der Kraftstoffdruck in dem Hochdruckspeicher (1) um einen vorgegeben Wert angehoben wird (200) und wobei auf der Grundlage einer erkannten Mengenbilanzverletzung (215) eine dynamische Absenkung oder Begrenzung des angehobenen Kraftstoffdrucks und/oder die Reduzierung des Momentes der Brennkraftmaschine durchgeführt wird (230).

Speicherkraftstoffeinspritzsystem und Verfahren zur Regelung des Kraftstoffdruckes dafür

Steuersystem für eine Brennkraftmaschine mit Direkteinspritzung

Einspritzmengenlernvorrichtung

Eine Voreinspritzmengenlernvorrichtung ist konfiguriert, um eine Voreinspritzmenge (Lernpunkt) bei einem Voreinspritzmengenlernen bei dem gleichen Lerndruck durch Variieren des Lernpunkts, der einer Voreinspritzmenge QPILOT bei dem Voreinspritzmengenlernen bei dem gleichen Lerndruck entspricht, durch Ändern der Anzahl von Malen einer Mehrfacheinspritzung bei der Mehrfacheinspritzung, bei der die Kraftstoffeinspritzung mit einer Mehrzahl von Schüben in einem Zyklus des Zylinders der Maschine durchgeführt wird, zu einer Mehrzahl zu machen. Die Lerngenauigkeit einer charakteristischen TQ-Q-Kurve nach einem Lernen der Voreinspritzmenge kann somit verbessert werden.

Verfahren zur automatisierten Kalibrierung der Steuerung einer Maschine

Verfahren zur Kalibrierung der Steuerung einer Maschine, insbesondere einer Brennkraftmaschine, wobei für zumindest einen Lastpunkt die Sensitivität verschiedener Betriebsparameter (X, Y, Z, ...) analysiert wird und unter Anwendung eines statistischen Versuchsplans für ausgewählte Messpunkte (M, M0) mit vorbestimmten Betriebsparametern (X, Y, Z, ...) Betriebsmessungen an der Maschine durchgeführt werden, dadurch gekennzeichnet, dass für zumindest einen nicht fahrbaren Messpunkt (M) Hilfsmesspunkte (A1, A2, A3, A4, ...) definiert werden, welche auf einer Verbindungslinie (L) zwischen einem stabilen Zentralmesspunkt (C) innerhalb der Betriebsgrenzen (G) der Maschine und dem Messpunkt (M) liegen, und dass der der Betriebsgrenze (B) am nächsten liegende fahrbare Hilfsmesspunkt (A1, A2, A3, A4, ...) als Ersatzmesspunkt (E) den weiteren Betriebsmessungen zugeführt wird.

Steuervorrichtung zur Verbesserung der Stabilität des Leerlaufzustandes einer Brennkraftmaschine

Brennkraftmaschinensystem und Startverfahren einer Brennkraftmaschine

Die Startsteuerprozedur der Erfindung verzögert eine Öffnungs-Schließ-Zeitabstimmung (VVT) eines Einlassventils, begrenzt eine Drosselöffnung (TH) eines Drosselventils und startet das Anlassen des Verbrennungsmotors mit einem niedrigeren Drehmoment (Tlow). Wenn ein Druck eines Kraftstoffs, der Zylinderinnenkraftstoffeinspritzventilen zugeführt wird, einen voreingestellten Bezugswert, der größer als eine Summe eines Zylinderinnenverdichtungsdrucks (Pin) und eines Ventilschließpositionshaltedrucks (Pcv) der Zylinderinnenkraftstoffeinspritzventile ist, erreicht oder übersteigt, wird bei der Startsteuerprozedur der Verbrennungsmotor mit einem Standardanlassdrehmoment (Tset) angelassen. Die Startsteuerprozedur startet dann das Vorstellen der Öffnungs-Schließ-Zeitabstimmung (VVT) des Einlassventils, hebt die Begrenzung der Drosselöffnung (TH) auf und startet die Kraftstoffeinspritzung aus den Zylinderinnenkraftstoffeinspritzventilen. Diese Anordnung ermöglicht, dass der Kraftstoffdruck (Pf) rasch ...

Kraftstoffsystemsteuerung

Verfahren zum Betrieb eines Kraftstoffsystems (100) in einem Motor (10), wobei das Kraftstoffsystem eine Versorgungspumpe (104) zur Druckbeaufschlagung von aus einem Kraftstofftank (114) erhaltenem Kraftstoff, einen Kraftstofffilter (118, 218) zum Filtern von Kraftstoff, eine Kraftstoff-Verteilerleitung (102) und ein Kraftstoffeinspritzventil (106) enthält, wobei das Verfahren Folgendes umfasst:während eines Motorkaltstarts,Betrieb der Versorgungspumpe; undEinstellung eines Betriebsmodus der Versorgungspumpe zwischen mindestens einem druckgesteuerten Modus und einem volumengesteuerten Modus auf Grundlage einer Kraftstofftemperatur und eines Kraftstoffdrucks, wobei Einstellen der Versorgungspumpe auf Grundlage einer Kraftstofftemperatur und eines Kraftstoffdrucks Folgendes umfasst:während eines ersten Zustands, in dem die Kraftstofftemperatur unter einer ersten Schwelltemperatur liegt, Betreiben der Pumpe im druckgesteuerten Modus (306);während eines zweiten Zustands, in dem die Kraftstofftemperatur ...

Verfahren und Vorrichtung zur Überwachung eines Kraftstoffzumeßsystems

Verfahren zur Überwachung eines Kraftstoffzumesssystems, insbesondere eines Common-Rail- Systems einer Dieselbrennkraftmaschine, wobei der Kraftstoff von wenigstens einer Pumpe von einem Niederdruckbereich in einen Hochdruckbereich gefördert wird, dadurch gekennzeichnet, dass ein Defekt des Zumesssystems erkannt wird, wenn ein Ausgangssignal eines Körperschallsensors und/oder eines Beschleunigungssensors von einem vorgebbaren Wert abweicht und dass bei einem erkannten Defekt der Kraftstofffluss zwischen einer Vorförderpumpe und einer Hochdruckpumpe unterbrochen wird.

Fuel feed system for fuel-injected IC engine with fuel pressure control

The fuel feed system has a fuel pump (22) with a variable speed drive (26) in the fuel tank (21) to feed fuel to the injectors (20) via a filter (25). A pressure sensor (28) behind the fuel filter provides actual pressure values for the fuel feed. A feedback control system regulates the fuel pump speed to ensure a steady fuel pressure at the injectors. This fuel pressure is computed from the engine loading. The control system monitors the fuel injection pulse length and varies same to match the required engine torque. Monitoring the pressure variations during fuel feed enables the control circuit to determine if air or vapour bubbles are in the system. In this case the overall pressure of the feed system is enhanced.

Brennstoffzufuhrvorrichtung für einen Verbrennungsmotor

Fuel injection system for an internal combustion engine

Returnless fuel delivery system

A returnless fuel delivery control system is disclosed which regulates fuel rail pressure at the level needed for precise control of fuel mass flow to fuel injectors at both normal and elevated engine temperatures. This regulation is accomplished by precisely controlling the speed of the fuel pump motor as a function of the projected fuel demand based on engine RPM and injector pulse width. The projection is modified as a function of differential pressure error. The differential pressure error responds to a fuel temperature strategy which increases the target differential pressure as a function of fuel temperature.

Returnless fuel delivery system

A returnless fuel delivery system controls the pressure across the fuel injectors (19A, 19B, 19C) of an internal combustion engine (20) without the use of a mechanical pressure regulator, and without returning any fuel to the fuel tank (14). Injection pressure is controlled using feedback and feedforward dynamic control, and accounts for variations in fuel temperature and supply voltage. The optimum injection pressure is determined by considering both the need to prevent fuel from boiling in the fuel rail (18) and the need to keep the injectors (19A, 19B, 19C) flowing in their linear flow region. ...

Returnless fuel delivery system

Electronic fuel injection quiet operation

A method of controlling hydraulically actuated electrically controlled unit fuel injectors to operate quietly and with less seat wear on a valve disposed therein is disclosed. The disclosed method comprises controlling the pressure of a high pressure working fluid which operates the injector to inject the proper amount of fuel in the cylinders of an internal combustion engine; and responding to changes in the pressure of the working fluid to vary the timing duration and amplitude of a current pulse which activates a stator that draws an armature to the stator and opens a first seat of the poppet valve or other flow regulating device against a spring bias to allow the high pressure working fluid into the injector and closes a second seat to prevent the working from draining from the injector to allow the working fluid to operate the injector. Upon deactivation of the stator the spring bias moves the armature away from the stator, closes the first seat and opens the second seat of the poppet ...

A fuel control system for an internal combustion engine

A system for controlling fuel flow in an internal combustion engine (224) receives a command specifying a desired fuel flow rate from an electronic control module (222). The system generates a feedforward estimate of actuator current required to produce the desired flow rate. This estimate is combined with a fueling current offset value generated using a proportional-integral feedback controller (208). A differential pressure between the fuel rail and cylinder gas is converted, by surface interpolation based on a lookup table, to an estimate of actual fuel flow rate. The difference between this actual fuel flow rate and the desired flow rate is provided to the feedback controller (208) as an error signal. The feedback controller (208) uses different gain values depending on an operating mode of the engine (224) speed control and torque control modes).

ELECTRONICALLY CONTROLLED INJECTING ARRANGEMENTS FEEDING FUEL UNDER CONSTANT PRESSURE INTO INTERNAL COMBUSTION ENGINES

... 1314411 Fuel injection systems SOC DES PROCEDES MODERNES D'INJECTION 12 May 1970 [23 May 1969] 22988/70 Heading G1N [Also in Division F1] In an I.C. engine fuel injection control system, the pump 2 which supplies fuel to the injectors 7-10 under constant pressure, has its throughput adjusted in accordance with the frequency and duration of the injection control pulses. As shown, the speed of a motor 17, which drives the pump, is controlled by a circuit 18 which receives the injection control pulses from the control device 11, a resistor 22 being provided to keep the motor 17 running when no input is received by circuit 18. The starter relay 19 is also connected to circuit 18 to provide maximum pump throughput during starting. In modifications, the injection control pulses applied to circuit 18 are lengthened, Fig.3 (not shown), or shortened, Fig.4 (not shown).

Method and gas fuel injection unit for operating an internal combustion engine

Disclosed is a method for operating an internal combustion engine 10 provided as a medium-speed gas engine or dual fuel engine in a gas fuel mode. The method comprises the step of directly injecting a gas fuel into a combustion chamber 14 of the engine at a maximum injection pressure that is lower than a compression-end pressure of the engine 10. A gas injection unit using the method is also disclosed.

Control of internal combustion engine operation

PROBLEM TO BE SOLVED: To measure an injected fuel amount comparatively accurately by detecting an injected fuel amount at a fuel injection time from a pressure acting on the fuel during the same fuel injection. SOLUTION: Fuel is fed from a tank 3 to a pump 5 via a filter 4 by another pump 2, and is pumped to a pressure chamber 6 by the pump 5. A pressure control valve 7 and a pressure sensor 8 are additionally provided in the pressure chamber 6, a pressure acting on the fuel in the pressure chamber 6 is measured by the pressure sensor 8. The pressure sensor 8 generates an electric signal corresponding to the measured pressure, and the signal is fed to an electric control device 10. The electric control device 10 controls the pressure control valve 7 so that the pressure acting on the fuel is high and is maintained at a nearly constant output value. Since the fuel amount fuel injected into a combustion chamber depends on the pressure of the pressure chamber 6, the electric control device ...

A method and system for operating a fuel injection system

PROCEDURE FOR THE REGULATION OF THE INJECTION PRESSURE OF AN INTERNAL-COMBUSTION ENGINE WITH COMMON RAIL INJECTION SYSTEM

ELECTRONIC GAS AUTOMATIC CONTROLLER WITH HIGH FLOW

PROCEDURE FOR THE PARAMETER LEARNING OF A CONTROL VALVE OF A HIGH PRESSURE FUEL PUMP WITH VARIABLE DELIVERY.

SYSTEM FOR THE CONTROLLING OF THE FUEL INJECTION FOR A COMBUSTION ENGINE AND A CONTROL PROCEDURE FOR IT

PROCEDURE FOR THE REAL TIME REGULATION OF A FUEL INJECTION FLOW CHARACTERISTIC

VERFAHREN ZUR ABGASNACHBEHANDLUNG EINER BRENNKRAFTMASCHINE

TIFF 00000004.TIF 293 208 TIFF 00000005.TIF 293 208 ...

VERFAHREN ZUM BETREIBEN EINER DIREKTEINSPRITZENDEN DIESEL-BRENNKRAFTMASCHINE

In a process to operate a diesel engine (1) with direct fuel injection, the fuel injection phase takes place when the crankshaft presentation range is approximately 2 before top dead center (TDC) to 20 after TDC. In a process to operate a diesel engine (1) with direct fuel injection, the engine operates in a first low- to mid-load (L1) range (A). In this range, combustion takes place at a local temperature (LL) below the NOx formation temperature and in a local ambient air ratio ((L) above the soot particle formation threshold ((LS). In the compression phase, fuel injection (l) begins at a crankshaft angle (CA) of 50 to 5 prior to (TDC), and exhaust gases are returned at a rate of 50 to 70 %. In order to achieve highest efficiency in each phase (A, B, C), in a second load range (B) which is part of the mid-load range (B), the fuel injection phase takes place in the crankshaft presentation range is approximately 2 before TDC to 20 after TDC. In the second operating range (B) the exhaust ...

FUEL INJECTION SYSTEM FOR AN INTERNAL-COMBUSTION ENGINE

PROCEDURE FOR REGULATING AN INTERNAL-COMBUSTION ENGINE

COMPACT FUEL SYSTEM OF HIGH ACHIEVEMENT WITH MEMORY

GAS INJECTION SYSTEM, IN PARTICULAR OF METHANE, FOR INTERNAL-COMBUSTION ENGINES AND A PRINTING YOUR VALVE FOR THE SYSTEM

HYBRIDSTEUERVERFHAREN FOR FUEL PUMP USING INTERMITTENT RECIRCULATION WITH LOW AND HIGH ENGINE SPEEDS

FUEL CONTROL APPARATUS

METHOD AND APPARATUS FOR CONTROLLING THE OPERATION OF A PUMP

An improved method and apparatus is provided to control the rate at which fuel is supplied to an engine by a fuel pump. The fuel pump has an output pressure which varies with pump operating speed in accordance with different curves of a series of curves. In order to determine which curve of the series of curves is representative of the manner in which the fuel pump output varies with pump speed at one time, the fuel pump operating speed and output pressure are simultaneously sensed to determine a point on an initial curve. The fuel pump operating speed is subsequently varied in accordance with the initial curve to provide a desired variation in fuel pump output to the engine. The fuel pump operating speed and output pressure are periodically simultaneously sensed to determine if the fuel pump output still varies in accordance with the initial curve or has changed to a second curve of the series of curves. If it is determined that a second curve is representative of the manner in which the ...

FUEL INJECTION CONTROLLER OF INTERNAL COMBUSTION ENGINE

A fuel injection controller of an internal combustion engine, wherein a pressure inside a common rail (3) is reduced when an engine is stopped without operating an automatic engine stopping and re-starting device for automatically stopping and re-starting the engine to improve a fuel consumption and, when the engine is stopped by the operation of the automatic engine stopping and re-starting device, the reduced amount of the pressure in the common rail (3) is reduced less than the reduced amount of the pressure in the common rail when the engine is stopped without operating the automatic engine stopping and re-starting device.

GAS INJECTION SYSTEM, PARTICULARLY OF METHANE, FOR INTERNAL COMBUSTION ENGINES, AND PRESSURE REGULATING VALVE COMPRISED IN SAID SYSTEM

Gas injection system, particularly of methane, for an internal combustion engine, comprising a plurality of electromagnetically controlled injectors (2) associated to the various cylinders of the engine, a gas distributing manifold (4) communicating with the injectors (2), a reservoir (5) feeding the distributing manifold (4), where the pressurised gas is accumulated. A pressure regulating valve (7) is interposed in the connection between the reservoir (5) and is controlled by an electronic control unit (6) so to vary the pressure of the gas in the distributing manifold according to the signals output by sensors (8, 9) of the pressure in the distributing manifold (4) and in the line (10) feeding the gas from the reservoir (5), also to obtain a pressure in the distributing manifold which is essentially equal to a prefixed theoretical value that the control unit (6) detects according to one or more operative parameters of the engine on the basis of prefixed theoretical pressure values of ...

FUEL INJECTION CONTROL METHOD FOR A DIRECT INJECTION GASEOUS-FUELLED INTERNAL COMBUSTION ENGINE

The method comprises receiving from the vehicle controller, values associated with the engine speed and of another parameter indicative of the engine operating conditions, such as the total fuelling amount, and controlling the fuel injection parameters according to the engine state, which, for example, can include a normal operation mode, a filter regeneration mode, an engine protection mode, high or low transient load modes, and operating at differen t altitudes, through algorithms implemented in an electronic controller.

FUEL INJECTION CONTROL DEVICE AND FUEL INJECTION CONTROL METHOD

This fuel injection control device controls a direct-into-cylinder fuel injection type spark ignition engine provided with a fuel injection valve through which fuel is injected directly into a cylinder, and an ignition plug which effects spark ignition of an air-fuel mixture in the cylinder. If the site on which the injected fuel impinges is in a certain low-temperature condition, the fuel injection control device injects the fuel by changing the fuel injection conditions under certain operating conditions in such a way as to limit continued impingement of the fuel spray mist in the same location.

SYSTEM FOR SUPPLY OF LPG, METHANE, AMMONIA, AND GAS IN GENERAL FOR PETROL OR DIESEL ENGINES WITH ELECTRONIC PRESSURE REGULATOR FOR CONTINUOUS VARIATION OF THE PRESSURE OF THE FUEL SUPPLIED TO THE INJECTORS

A system for supply of LPG/methane, ammonia, or gas for supply of petrol or diesel engines, which can be connectable to the electronic control unit (8) provided on board the vehicle, the system being equipped with a gas tank (1); a valve (2), a line (3) for delivery of the gas, a rail (6) for supply of the gas to the engine, a pressure and temperature sensor (7); injectors for the petrol (10), and injectors for the gas (11), is characterized in that, to carry out a continuous variation of the pressure of the gas supplied to the injectors (11), it further comprises an electronic pressure regulator and heat exchanger (5) with injector (4), as well as a control unit for deviation and regulation of the pressure (9), which, during operation of the engine with LPG/methane or ammonia or gas, is designed to receive from the electronic control unit of the engine (8) electrical signals as a function of the injection times, the engine r.p.m., and the signal sent by the lambda probe and/or by the rheostat ...

MODULE FOR MANAGING MASS FLOW AND DAMPENING PRESSURE PULSATIONS IN A GASEOUS FUEL SUPPLY LINE

The module for managing mass flow and dampening pressure pulsations in the supply line of a gaseous fuelled internal combustion engine comprises a hollow body defining an expanded volume that is fluidly connected directly to a pressure sensor and a temperature sensor. The module is placed along the supply line of a gaseous fuel engine between a fuel pressure increasing device and the fuel rail that supplies fuel to the engine. The module can comprise a filter that filters the impurities from the gaseous fuel supplied to the engine and an overpressure protection device that can vent some of the gaseous fuel from the module to protect it for over-pressurization.

FUEL SYSTEM FOR A FUEL INJECTED ENGINE

A method of operating a fuel system having a fuel pump (15) to supply fuel t o a fuel metering apparatus (23) operable to provide mitered quantities of fuel for injection to an engine, and an electronic controller (22) responsive to a plurality of input signals to determine the engine fuel demand and to control the activation of the fuel metering apparatus (23) to deliver a quantity of fuel to meet said fuel demand. The method comprising maintaining a fuel supply to said fuel metering apparatus (23) within predetermined fuel pressure or fuel level parameters, and cyclically operati ng said full pump (15) to maintain said fuel supply within said parameters. Further providing a signal from a sensor (18) to the electronic controller (22) indicative of the pressure of the fuel supply at the fuel metering apparatus (23) as one of said input signals to be processed by the electronic controller (22) in the control of the furl metering apparatus (23). The pump (15) preferably provides fuel to a ...

FUEL FUEL INJECTION SYSTEM FOR AN INTERNAL-COMBUSTION ENGINE.

Verfahren zum Betrieb einer Verbrennungskraftmaschine mit einem gasförmigen Kraftstoff sowie Verbrennungskraftmaschine.

Die Erfindung betrifft ein Verfahren zum Betrieb einer Verbrennungskraftmaschine mit mindestens zwei Zylindern und einem System zur Kraftstoff-Einspritzung, bei dem der Kraftstoff aus einem Primärtank entnommen und unter einer gegenüber dem atmosphärischen Druck deutlich verdichteten Form einem Rail 2 zugeführt wird und mehrere Zylinder den gasförmigen Kraftstoff aus einem gemeinsam genutzten Rail 2 beziehen, dadurch gekennzeichnet, dass der Druck-Sollwert des im Rail 2 gespeicherten gasförmigen Kraftstoffs während des Betriebes der Verbrennungskraftmaschine unabhängig vom Motorbetriebspunkt auf einen konstanten Wert oder einen variablen Sollwert, der sich nur in einer geringen Bandbreite B ändert, geregelt oder anderweitig gehalten wird.

Fuel system operating method for internal-combustion engine

The present invention relates to a method for running an internal-combustion engine system, wherein fuel is compressed to a first pressure (44) by a first fuel pump and is transmitted to a second fule pump through a first fuel line. The second fuel pump compresses the fuel to a second pressure. The pressure of the first fuel line is limited to a limitation pressure by a pressure limiting device. The first fuel pump transporting power and the second fuel pump transporting power are alterable. Here, a method for running the fuel system is provided, and includes the following steps: (a) changingthe first fuel pump transporting power to make the pressure of the first fuel line reach or leave the limitation pressure; (b) detecting or calculating a value (AS1) of a first control parameter for influence of the first fuel pump transporting power, wherein a varied curve of a second control parameter (46) for influence of the second fuel pump transporting power has an inflection point at the value ...

Fault diagnosis system and control system for internal combustion engine

The invention provides a fault diagnosing and controlling system for an internal-combustion engine. When the fuel pressure target value (PFIN) is changed in steps, the ECU (60) of an engine (10, 70) processes the monitoring for the changing value for the actual fuel pressure (NPC). Under an abnormal situation, the needed time of the fuel target value of the actual fuel pressure is equal to the normal time of the actuator (34). However, the maximum value of the differential value (dNPC/dt) of the time of the actual fuel pressure is different from the maximum value of the normal working time. Thereby, the actual fuel pressure is arranged with the normal area for the maximum value of the differential value in advance; if the differential value related to the actual fuel pressure is more than the normal area of the maximum value of the differential value, the invention confirms that the actuator works abnormally.

Method for determining a correction characteristic curve

The invention relates to a method for determining a correction characteristic curve (29) for adapting a characteristic curve of an injection system (26), in which the correction characteristic curve (29) comprises at least one deviation of a measured characteristic curve with respect to a setpoint characteristic curve, wherein the at least one deviation comprises a sum tolerance of at least two components of the injection system (26) which influence the characteristic curve.

ORDER Of a SYSTEM Of FUEL INJECTION FOR an ENGINE HAS COMBUSTIONINTERNE COMPRISING SEVERAL CYLINDERS

METHOD FOR REDUCING VAPORIZATION OF THE FUEL IN AN INTERNAL COMBUSTION ENGINE.

PROCESS AND CONTROLLER Of an INTERNAL COMBUSTION ENGINE HAS FUEL INJECTIONDIRECTE Of a MOTOR VEHICLE, IN PARTICULAR WITH STARTING

DEVICE AND PROCESS OF DETECTION OF the CLOGGING Of a FILTER HAVE FUEL Of a FEEDING SYSTEM WHILE CARBURIZING Of an INTERNAL COMBUSTION ENGINE, IN PARTICULAR MOTOR VEHICLE.

INSTALLATION Of INJECTION OF the FUEL HAS ACCUMULATION OF PRESSURE

Method of determining pressure in fuel feed ramp for motor vehicle internal combustion engine injectors, involves altering rise in fuel pressure dependent on measured pressure value and pressure variation as injector opens

Il s'agit d'un procédé de détermination de la pression du carburant contenu dans une rampe (3) d'alimentation en carburant des injecteurs (2) d'un moteur (1) à combustion à injection directe qui consiste en ce qu'un calculateur (5) reconstitue l'évolution de la pression du carburant pendant la phase d'ouverture de l'injecteur en effectuant la somme algébrique de la valeur mesurée en certains instants du cycle d'une part, et de la variation de pression entre l'instant de mesure et la phase d'ouverture de l'injecteur d'autre part, cette variation de pression étant déterminée au moyen d'un modèle de comportement de circuit.

FUEL INJECTION SYSTEM COMMON RAIL FOR PREVENTING AN ERROR IN DETERMINING THE PRESSURE OF THE COMMON RAIL

PROCESS AND CONTROL DEVICE WITH COMPENSATION OF the WAVE OF PRESSURE Of a SYSTEM Of INJECTION Of an INTERNAL COMBUSTION ENGINE

Governor automatically-controlled fuel

L'invention concerne un régulateur de pression de carburant. Elle se rapporte à un régulateur de pression de carburant qui comprend un boîtier, un diaphragme flexible (38) délimitant deux chambres (46, 48) dont l'une communique avec un collecteur d'admission d'air d'un moteur et l'autre a une entrée de carburant et une sortie communiquant avec des injecteurs, un obturateur (68) de réglage à l'entrée, un organe de manoeuvre (86) de l'obturateur (68) destiné à se déplacer avec le diaphragme (38), et un ressort (90) rappelant le diaphragme (38) vers l'obturateur (68) afin qu'il maintienne une perte de charge constante dans les injecteurs, mais puisse s'écarter de l'obturateur (68) en compensant la dilatation du carburant. Application aux moteurs à combustion interne ...

SYSTEM FOR CONTROLLING THE POWERTRAIN OF A HYBRID VEHICLE WITH MANAGEMENT OF EXCESS PRESSURE IN THE FUEL RAIL

I.c. engine operating procedure uses direct fuel injection in two or more phases at different pressures

Il est proposé un procédé de fonctionnement d'un moteur à combustion interne ayant une injection directe de carburant. Selon l'invention, l'injection de carburant présente au moins deux injections, les au moins deux injections étant effectuées avec au moins deux pressions d'injection différentes. Application dans des véhicules automobiles.

CONTROL SYSTEM OF the SWING OF the OPERATION Of an ENGINE OF VEHICULEAUTOMOBILE ENTERS OF the MODES RICH PERSON AND POOR

Ce système dans lequel le moteur (1) est associé à des moyens de commande (6, 7) de la boucle d'air de celui-ci, à des moyens de commande (6, 8) de la pression de carburant dans une rampe commune (4) d'alimentation en carburant des cylindres de celui-ci, à des moyens de commande (6, 9) des injections (5) de carburant dans ces cylindres et à des moyens de basculement (6) des paramètres de contrôle de ces moyens entre des paramètres de contrôle du fonctionnement du moteur (1) en mélange riche et en mélange pauvre, est caractérisé en ce que les moyens de basculennent (6) comprennent des moyens de basculement progressif des paramètres de contrôle des moyens de commande de la boucle d'air (7) et de la pression de carburant dans la rampe commune d'alimentation (4) et des moyens de basculement instantané des paramètres des moyens de commande des injections (5), mais différé vers la fin du basculement progressif des paramètres des autres moyens de commande, entre leurs valeurs de mode riche et ...

Fuel supply and injection system, for engine of vehicle, comprises fuel tank, single electrical pump unit, fuel injection valves, and pipes

Un système d'alimentation en carburant et d'injection de carburant comprend un réservoir (38), une seule unité de pompe électrique (35), de multiples injecteurs de carburant (45) et une tuyauterie (40-42). L'unité de pompe est placée dans le réservoir (38). Chaque injecteur comprend une buse (46) placée dans une chambre de combustion (15) correspondante et injecte directement du carburant dans la chambre de combustion. L'unité de pompe (35) est la seule pompe utilisée pour fournir le carburant aux injecteurs (45), et la commande de l'alimentation électrique de l'unité de pompe et d'un démarreur (29) est coordonnée au démarrage pour optimiser les conditions dans lesquelles le carburant est injecté dans les chambres de combustion.

Fuel injection control procedure especially for engine with common manifold by creating oscillations in feed pipe to give increased pressure

Un dispositif d'injection de carburant comporte un injecteur de carburant, un tube pour alimenter l'injecteur en carburant, une aiguille dont le déplacement ouvre ou ferme l'injecteur, une vanne commandant une fuite de carburant pour faire chuter une pression de commande de l'aiguille en dessous d'un seuil de pression de commutation, le tube étant alimenté en carburant sous une pression de source (Ps). Selon l'invention, on procède aux étapes suivantes : - en dehors des phases d'injection, on pilote de courtes ouvertures de la vanne à une fréquence d'excitation pour créer un phénomène oscillatoire de la pression dans le tube autour de la pression de source (Ps), la durée des ouvertures étant inférieure à un délai prédéterminé nécessaire pour que la pression de commande atteigne la pression de commutation, - on pilote le début de l'injection du carburant à un instant où la pression dans le tube est croissante et supérieure à la pression de source (Ps).

BY-PASS OF UNBALLASTING FOR PUMP INJECTION DIRECT HAS HIGH PRESSURE

BY-PASS OF UNBALLASTING FOR PUMP INJECTION DIRECT HAS HIGH PRESSURE

BY-PASS OF UNBALLASTING FOR PUMP INJECTION DIRECT HAS HIGH PRESSURE

BY-PASS OF UNBALLASTING FOR PUMP INJECTION DIRECT HAS HIGH PRESSURE

BY-PASS OF UNBALLASTING FOR PUMP INJECTION DIRECT HAS HIGH PRESSURE

고압 연료 펌프의 기능을 제어하는 방법 및 장치

... 연소 기관에 연료를 주입하는 시스템에서 고압 펌프(5)의 기능을 제어하는 방법은 연소 기관의 정지 동작 조건 중에 축압기 탱크(6)의 연료 압력에 대해 요구되는 일정한 기준값으로 수행된다. 이에 따라, 시스템의 저압부(3)에서 공급 펌프(2)는 고압 펌프의 입구에서 저압부의 연료 압력이 감소됨과 동시에 저압부의 연료 압력과 축압기 탱크의 연료 압력이 측정되도록 제어된다. 고압 펌프의 기능에 대한 정보를 생성하기 위해, 축압기 탱크에서 측정된 연료 압력의 추이는 저압부의 압력을 감소시키는 중에 상기 기준값과 비교된다.

GASEOUS FUEL DIRECT INJECTION SYSTEM

A gaseous direct fuel injection system for a spark ignition combustion engine has a fuel supply means (11) comprising a plurality of volumes (13, 14) corresponding with a plurality of coexisting available fuel pressures for gaseous fuel to be supplied to the fuel injectors (9) at at least some operating points of the engine. A control unit selects the supply fuel pressure as a function of engine operating conditions. © KIPO & WIPO 2008 ...

METHOD TO CONTROL A SET OF FUEL BOMB, AND, SET OF FUEL BOMB

ARRANGEMENT AND METHOD FOR AN INTERNAL COMBUSTION ENGINE WITH DIRECT FEED SCREW

CLOSED LOOP ENGINE CONTROL FOR REGULATING NOx EMISSIONS, USING TWO-DIMENSIONSAL FUEL-AIR CURVE

An engine control strategy that ensures that NOx emissions from the engine will be maintained at an acceptable level. The control strategy is based on a two-dimensional fuel-air curve, in which air manifold pressure (AMP) is a function of fuel header pressure and engine speed. The control strategy provides for closed loop NOx adjustment to a base AMP value derived from the fuel-air curve.

FUEL PRESSURE CONTROL IN A COMMON RAIL SYSTEM

The present invention relates to control of the fuel pressure in a common rail engine in connection with an automatic gearshift procedure. Upon receipt of a primary gearshift command (CGSA) a fuel pressure (PR) in the common rail fuel system is started to be decreased. This decrease is initiated a time interval ( t) prior to commencing (t2) a lowering of the engine torque (T). An original gear is then released (t3) after having lowered the engine torque (T) sufficiently (th1) to allow a smooth gear release.

FUEL SUPPLY SYSTEM FOR AN INTERNAL COMBUSTION ENGINE HAVING A FULE PUMP

In a fuel supply system (10) for an internal combustion engine having a fuel pump (20) which has a variable delivery quantity and is intended for delivering fuel under pressure into a pressure space (26), a control device (34) for controlling the pressure in the pressure space (26) on the basis of at least one measurement variable which has been recorded at the fuel pump (20), at least one injection device (28) for injecting fuel from the pressure space (26), and a signal generator for making available a signal for controlling the injection device (28), according to the invention the control device (34) is configured to detect, on the basis of the signal from the signal generator, a change in the direction of a relatively large or relatively small fuel requirement of the at least one injection device (28) and to control the fuel pump (20) correspondingly in a predictive fashion.

INJECTION SYSTEM (COMMON RAIL) FOR INTERNAL COMBUSTION ENGINES

The invention relates to an injection system (Common Rail) for internal combustion engines comprising a flow controlled high pressure pump and a control device regulating the volume flow and also the rail pressure. According to the invention, said system is provided with a controllable, high speed pressure reduction valve (14, 14a, 19, 20, 22 - 28) for removing minimal amounts of fuel from the rail in order to reduce the pressure in the system, so that the desired system pressure (PSOLL) is not exceeded. A variance comparison of the pressure system is generated after the reduction in pressure and the withdrawal of fuel (pressure reduction) takes place by means of the pressure reduction valve.

LOW PRESSURE FEED PUMP CONTROL FOR A HIGH PRESSURE COMMON RAIL FUEL INJECTION SYSTEM

In a fuel supply apparatus for an internal combustion engine, fuel is delivered to a high pressure fuel pump (7) driven by an internal combustion engine, using an electrically-operated low pressure fuel pump (6), and the fuel pressurized by the high pressure fuel pump (7) is supplied to the internal combustion engine. The fuel supply apparatus includes a low pressure pump control portion (42) that controls the low pressure fuel pump (6) to avoid a discharge failure in the high pressure fuel pump (7) due to insufficiency of a feed pressure at which the low pressure fuel pump (6) delivers the fuel to the high pressure fuel pump (7). The low pressure pump control portion (42) stops the low pressure fuel pump (6) in a case where the discharge failure in the high pressure fuel pump (7) is avoided even when the feed pressure is equal to a gauge pressure of 0.

METHOD FOR THE CLOSED-LOOP CONTROL OF THE RAIL PRESSURE IN A COMMON-RAIL INJECTIOM SYSTEM OF AN INTERNAL COMBUSTION ENGINE

Proposed is a method for open-loop and closed-loop control of an internal combustion engine (1), the rail pressure (pCR) being controlled via a low pressure-side suction throttle valve (4) as the first pressure-adjusting element in a rail pressure control loop. The invention is characterized in that a rail pressure disturbance variable is generated to influence the rail pressure (pCR) via a high pressure-side pressure control valve (12) as the second pressure-adjusting element, by means of which fuel is redirected from the rail (6) into a fuel tank (2).

FUEL INJECTION CONTROL DEVICE

A gas injection valve (14) is provided in an engine (10) as a gas-injection means for injecting, into the engine (10), gas fuel supplied from a gas tank (27) via a gas passage (26). A microcomputer (61) of an ECU (60) detects engine (10) start-up temperature in a prescribed start-up period of the engine (10) spanning from start-up initiation to start-up completion. In cases when gas-fuel injection using the gas injection valve (14) is implemented in the prescribed start-up period, the microcomputer (61) implements gas-fuel injection at a time in the intake stroke such that the lower the start-up temperature the later the time.

FUEL INJECTION DEVICE FOR AN INTERNAL COMBUSTION ENGINE

The fuel injection device comprises a high-pressure pump (18) which is used to pump the fuel at high pressure into a reservoir (32) and which is connected to injectors (40) that are disposed on the cylinders of the internal combustion engine. A feed pump (10) pumps fuel from a storage container (12) to the high-pressure pump. The amount of fuel pumped by the high-pressure pump is adjusted by a fuel measurement device (62) and controlled in such a way that the amount of fuel pumped into the reservoir (32) by the high-pressure pump corresponds to the amount required in order to maintain a given pressure inside the reservoir (32). A return pipe (60), leading at least indirectly to the storage container (60), runs between the feed element (10) and the high-pressure pump (18). The fuel measurement device (62) is disposed inside the return pipe (60) and the cross-section of the through-flow of the return pipe is adjusted in such a way that the amount of fuel corresponding to the difference between ...

CONTROL DEVICE FOR FUEL INJECTION SYSTEM

A control device is included in a fuel injection system. The fuel injection system includes a low pressure pump, a high pressure pump, an accumulator, a fuel injection valve, a relief valve, and a return pipe. The high pressure pump increases a pressure of a fuel discharged from the low pressure pump and discharges high pressure fuel. The accumulator stores the high pressure fuel discharged from the high pressure pump. The relief valve is provided in a high pressure portion provided downstream from the high pressure pump and opens when a high pressure abnormality occurs in the high pressure portion. The return pipe returns the high pressure fuel in the high pressure portion to a low pressure portion provided downstream from the low pressure pump by the relief valve opening. 1. A control device for a fuel injection system , the fuel injection system including:a low pressure pump configured to pressurize a fuel in a fuel container and discharge the fuel;a high pressure pump configured to increase a pressure of the fuel discharged from the low pressure pump and discharge high pressure fuel;an accumulator configured to store the high pressure fuel discharged from the high pressure pump;a fuel injection valve configured to inject the high pressure fuel in the accumulator;a relief valve that is provided in a high pressure portion provided downstream from the high pressure pump and configured to open when a high pressure abnormality occurs in the high pressure portion; anda return pipe configured to return the high pressure fuel in the high pressure portion to a low pressure portion provided downstream from the low pressure pump by opening of the relief valve,the control device configured to control the high pressure fuel in the accumulator within a predetermined pressure range, the control device comprising:a fuel pressure determination unit configured to determine whether a pressure in the high pressure portion rises to a predetermined determination pressure higher than ...

Method and control and regulating device for operating an iinternal combustion engine with piezoelectrically actuated fuel injection valves

In an internal combustion engine, the fuel enters at least one combustion chamber of the internal combustion engine via at least one fuel injection device. A piezoelectric actuator moves a valve element of the fuel injection device The function of the piezoelectric actuator is monitored and a malfunction is detected. To minimize the risk of damage to the internal combustion engine in the event of a malfunction of the piezoelectric actuator, the fuel mass flow to the fuel injection device is reduced if a malfunction of the piezoelectric actuator is detected.

Accumulator type fuel injection control system and the method thereof

In an accumulator type fuel injection control system, a fuel pressure setting means determines a basic fuel injection pressure from both fuel injection volume and engine speed, and when the temperature of a fuel discharged to a fuel tank is high, a fuel pressure correcting means subtracts, from the basic fuel injection pressure, a pressure reduction quantity which has been set according to the fuel temperature. Further, a fuel injection timing correcting means adds, to a basic fuel injection timing, an advance quantity which has been set according to the pressure reduction quantity and thereby determines a corrected fuel injection timing. A fuel pressure control means controls the fuel pressure in a fuel pump in accordance with the corrected fuel injection pressure, and a fuel pressure control means controls the injection timing of an accumulator type unit injector in accordance with the corrected fuel injection timing, whereby a rubber hose and the fuel tank both included in a fuel return ...

Method for the open-loop control and closed-loop control of an internal combustion engine

The invention relates to a method for the open-loop control and the closed-loop control of an internal combustion engine ( 1 ), the rail pressure (pCR) being controlled in a closed loop mode in the normal operating state and an emergency operation mode being activated once a defective rail pressure sensor ( 9 ) is detected, in which emergency operation the rail pressure (pCR) is controlled in an open loop mode. The invention is characterized in that in the emergency operation mode, the rail pressure (pCR) is gradually increased until a passive pressure relief valve ( 11 ) is activated which redirects fuel from the rail ( 6 ) to the fuel tank ( 2 ) when it is open.

Method to minimize common rail pressure irregularities due to aliasing effect on battery voltage monitoring

A method is provided to minimize common rail pressure irregularities due to aliasing effect on battery voltage monitoring in a digital electronic control unit that is capable of PWM regulations of a metering valve unit in a diesel common-rail power-train system. At least an engine rotary speed signal is detected and at least a battery voltage signal is monitored, the method includes, but is not limited to calculating the aliasing frequency on said battery voltage signal as a function of said engine rotary speed signal, filtering the battery voltage signal before it is input to said controller module with at least one digital non-linear notch filter, the at least one digital non-linear notch filter substantially centered on the first harmonic of the aliasing frequency, and input the filtered battery voltage signal, at least with the engine rotary speed signal, to the controller module for PWM regulating the metering valve unit.

Method for the open-loop control and closed-loop control of an internal combustion engine

The invention relates to a method for the open-loop control and the closed-loop control of an internal combustion engine ( 1 ), the rail pressure (pCR) being controlled in the normal operating state in a closed loop control mode via an intake throttle ( 4 ) on the lower pressure side as the first pressure control member in a rail pressure control loop and at the same time a rail pressure disturbance variable being applied to the rail pressure (pCR) via a pressure control valve ( 12 ) on the high pressure side as the second pressure control member. For this purpose, a pressure control valve volume flow (VDRV) is redirected from the rail ( 6 ) to a fuel tank ( 2 ) via the pressure control valve ( 12 ) on the high pressure side, and an emergency operation mode is activated once a defective rail pressure sensor ( 9 ) is detected, in which emergency operation the pressure control valve ( 12 ) on the high pressure side and the intake throttle ( 4 ) on the low pressure side are actuated depending on the same set point value.

FUEL INJECTION SYSTEM AND CONTROLLER FOR FUEL INJECTION SYSTEM

A fuel pump includes a camshaft that rotates in accordance with operation of an engine and a tappet provided in contact the camshaft. An ECU includes an angle determination unit configured to determine whether a rotation angle from a start of rotation of the camshaft when starting the engine is under a predetermined angle required for forming an oil film on a sliding portion of the tappet, and a control unit configured to, when the rotation angle from the start of rotation of the camshaft is determined to be under the predetermined angle, execute a limit process including at least one of limiting a fuel discharge pressure of the fuel pump or limiting a rotation of the camshaft. 1. A controller for a fuel injection system including a fuel pump having a camshaft that rotates in accordance with operation of an internal combustion engine , a tappet provided in contact with a cam of the camshaft that converts the rotation of the camshaft into linear motion , and a plunger that reciprocates according to the linear motion of the tappet , the fuel pump being configured to suck and discharge fuel according to the reciprocation of the plunger , an accumulator that stores high pressure fuel discharged from the fuel pump , and a fuel injection valve that injects the high pressure fuel stored in the accumulator into a combustion chamber of the internal combustion engine , the controller comprising:an angle determination unit configured to determine whether a rotation angle from a start of rotation of the camshaft when starting the internal combustion engine is under a predetermined angle required for forming an oil film on a sliding portion of the tappet, and when the rotation angle from the start of rotation of the camshaft is determined to be under the predetermined angle, execute a limit process including at least one of limiting a fuel discharge pressure of the fuel pump or limiting a rotation of the camshaft, and', 'when the rotation angle is determined to have exceeded the ...

Method for controlling and regulating an internal combustion engine

Proposed is a method for controlling and regulating an internal combustion engine ( 1 ) having a common rail system and having a passive pressure limiting valve ( 11 ) for discharging fuel out of a rail ( 6 ) into the fuel tank ( 2 ), in which method, in a first stage, the pressure limiting valve ( 11 ) is set as open when the rail pressure, proceeding from a steady-state rail pressure, exceeds a first threshold value and subsequently falls below a second threshold value within a first critical time, wherein the first threshold value characterizes a higher pressure level than the steady-state rail pressure and the second threshold value characterizes a lower pressure level than the first threshold value, and in which method the opening duration of the opened pressure limiting valve ( 11 ) is monitored.

Method and apparatus for correction of pressure wave affected fuel injection

A fuel injection system ( 1 ) of a combustion engine includes: at least one fuel injection actuator ( 3 ) to inject fuel into a cylinder ( 2 ) of the combustion engine, a high pressure fuel supply system to supply the fuel injection actuators ( 3 ) with fuel, and a control logic device ( 12 ) including an artificial neural network ( 12 A) to calculate pressure correction data (pcd) used to correct pressure waves, PW, generated by at least one actuator of the fuel injection system ( 1 ).

Hydraulic servo gas regulator for multi-fuel engine

A bi-fuel and dual-fuel engine variable pressure fuel system is presented facilitating individual or simultaneous use of liquid and gaseous fuels including natural gas, hydrogen and gasoline, through employment of a variable output pressure gaseous fuel regulator incorporating an attached hydraulic amplifying structure communicating with a relatively low pressure fluid servo circuit that may in turn communicate with a variable pressure automotive liquid fuel system to facilitate relatively high pressure gaseous fuel injection.

HIGH PRESSURE, HIGH SPEED REGULATING SWITCH VALVE

The present disclosure provides a fuel injector for an internal combustion engine with a fuel injector body having a valve chamber, a first conduit in fluid communication with the valve chamber for a first flow of fuel having a first pressure, and a second conduit in fluid communication with the valve chamber for a second flow of fuel having a second pressure. The fuel injector further includes a valve member configured to move between the first conduit and the second conduit. Additionally, an actuator of the fuel injector is configured to move the valve member during a fuel injection cycle. The fuel injector is configured to operate in at least three modes. 1. A fuel injector for an internal combustion engine , comprising: a valve chamber;', 'a first conduit in fluid communication with the valve chamber and fluidly coupled to a first fuel source having a first pressure;', 'a second conduit in fluid communication with the valve chamber and fluidly coupled to a second fuel source having a second pressure, the second pressure being greater than the first pressure; and', 'an outlet port in fluid communication with the valve chamber;, 'a fuel injector body havinga valve member positioned within the valve chamber and configured to fluidly couple the valve chamber to the first conduit in a first position, and to fluidly couple the valve chamber to the second conduit in a second position; andan actuator coupled to the fuel injector body and configured to move the valve member such that the valve member is in each of the first position and the second position during distinct portions of a single fuel injection event,the fuel injector being configured to operate in at least three modes, wherein in a first mode, the valve member is positioned toward the second conduit during a first portion of the fuel injection event and fuel from the first fuel source is in fluid communication with the outlet port, in a second mode, the valve member is positioned toward the first conduit ...

FUEL INJECTION CONTROL DEVICE FOR ENGINE

An electronic control unit includes a seat temperature calculating unit, a supply amount control unit, and a concentration acquiring unit. The seat temperature calculating unit calculates a simulated temperature of an exhaust valve seat. When the simulated temperature of the exhaust valve seat becomes equal to or higher than a threshold temperature, the supply amount control unit starts fuel increase control of increasing a lower limit value of an amount of fuel to be supplied into a cylinder to a larger value than that before the simulated temperature becomes equal to or higher than the threshold temperature. The concentration acquiring unit acquires an ethanol concentration of the fuel. In the fuel increase control, the supply amount control unit makes the amount of increase in the lower limit value larger as the ethanol concentration of the fuel acquired by the concentration acquiring unit is higher. 1. A fuel injection control device for an engine , the engine configured to operate on fuel containing ethanol , and the engine provided with an exhaust valve seat coated with an oxide film , the fuel injection control device comprising [ (a) the simulated temperature of the exhaust valve seat is higher as an engine speed is higher, and', '(b) the simulated temperature of the exhaust valve seat is higher as an engine load factor is larger,, '(i) calculate a simulated temperature of the exhaust valve seat such that'}, '(ii) start fuel increase control when the simulated temperature of the exhaust valve seat becomes equal to or higher than a threshold temperature, the fuel increase control being a control of increasing a lower limit value of a fuel supply amount to a larger value than the lower limit value of the fuel supply amount when the simulated temperature of the exhaust valve seat is lower than the threshold temperature, and the fuel supply amount being an amount of fuel to be supplied into a cylinder,', '(iii) acquire an ethanol concentration of the fuel, and', ...

Method for actuating a camshaft

A method for actuating at least one camshaft, operable independently of a crankshaft, of an internal combustion engine includes: a) when the internal combustion engine is standing still, the at least one camshaft is actuated in such a way that a delivery stroke of a high-pressure pump of a high-pressure fuel injection device takes place; and b) during a subsequent reverse rotation of the at least one camshaft into the starting position, a quantity control valve of the high-pressure pump is not actuated.

Method for Regulating a Fuel Delivery System

A method for regulating a fuel delivery system of an internal combustion engine in a motor vehicle having a fuel delivery pump for supplying the internal combustion engine with fuel, the fuel delivery pump having a pump mechanism driveable by an electric motor actuable by a control signal, and a pressure-sensor-free pressure monitor being provided in the fuel delivery system, includes: predefining a target rotational speed for the electric motor based on the control signal; predefining an upper rotational speed limit and/or a lower rotational speed limit for the target rotational speed, wherein the upper rotational speed limit depends on the maximum fuel requirement of the internal combustion engine, and the lower rotational speed limit depends on the minimum fuel requirement of the internal combustion engine; and determining the target rotational speed by a pressure-sensor-free calculation method. 112-. (canceled)13. A method for regulating a fuel delivery system of an internal combustion engine in a motor vehicle having a fuel delivery pump for supplying the internal combustion engine with fuel , the fuel delivery pump having a pump mechanism driveable by an electric motor actuable by a control signal , and a pressure-sensor-free pressure monitor being provided in the fuel delivery system , the method comprising:predefining a target rotational speed for the electric motor based on the control signal;predefining an upper rotational speed limit and/or a lower rotational speed limit for the target rotational speed, wherein the upper rotational speed limit depends on the maximum fuel requirement of the internal combustion engine, and the lower rotational speed limit depends on the minimum fuel requirement of the internal combustion engine; anddetermining the target rotational speed by a pressure-sensor-free calculation method.14. The method as claimed in claim 13 , further comprising changing the rotational speed of the electric motor if the determined target ...

SYSTEM AND METHOD OF CONTROLLING FUEL INJECTION PRESSURE IN AN ENGINE HAVING AN IN-CYLINDER PRESSURE SENSOR

A method of operating an internal combustion engine is provided. An in-cylinder pressure within a cylinder of the engine is determined. A fuel injection pressure from a fuel injector disposed within the cylinder is determined. A ratio of the in-cylinder pressure within the cylinder and the fuel injection pressure is compared to a stored threshold value. The fuel injection pressure is adjusted based upon the comparison of the ratio of the in-cylinder pressure within the cylinder and the fuel injection pressure to the stored threshold value. 1. A method of operating an internal combustion engine comprising:determining an in-cylinder pressure within a cylinder of the engine;determining a fuel injection pressure from a fuel injector disposed within the cylinder;comparing a ratio of the in-cylinder pressure within the cylinder and the fuel injection pressure to a stored threshold value; andadjusting the fuel injection pressure based upon the comparison of the ratio of the in-cylinder pressure within the cylinder and the fuel injection pressure to the stored threshold value.2. A method of operating an internal combustion engine comprising:determining an air/fuel ratio of an internal combustion engine;adjusting at least one of fuel injection quantity and intake air flow to provide an air/fuel ratio between about 15 and about 18;determining an in-cylinder pressure within a cylinder of the engine;determining a fuel injection pressure from a fuel injector disposed within the cylinder;adjusting a compression ratio of the engine based upon a comparison of a ratio of the in-cylinder pressure within the cylinder and the fuel injection pressure to a predetermined stored threshold value. The present disclosure relates to a system and method of controlling combustion within an internal combustion engine having a variety of sensors for monitoring combustion occurring within a cylinder, such that adjustments may be made to operating parameters of the internal combustion engine. The ...

High-pressure pump control device for internal combustion engine

A high-pressure pump control device is applied to an internal combustion engine including a high-pressure pump supplied with fuel discharged from a low-pressure pump and an injector supplied with fuel discharged from the high-pressure pump. The high-pressure pump control device includes a prediction unit predicting whether a discharge quantity of the high-pressure pump exceeds a discharge quantity of the low-pressure pump and a restricting unit executing a discharge quantity restriction control to restrict a discharge quantity of the high-pressure pump not to exceed a predetermined value when the prediction unit predicts that a discharge quantity of the high-pressure pump exceeds a discharge quantity of the low-pressure pump.

Method and System for Operating Gaseous-Fuelled Direct Injection Internal Combustion Engine

A method for operating a gaseous-fuelled internal combustion engine by directly injecting the gaseous fuel into the combustion chamber is disclosed wherein the gaseous fuel is injected at injection pressures higher than 300 bar and the pressure ratio between the gaseous fuel injection pressure and the peak cylinder pressure is between 1.6:1 and 3:1, and preferably between 2.5:1 to 2.8:1. The injection pressure is selected to be between 300 and 540 bar and preferably between 300 bar and 440 bar. The injection pressure can be selected based on a preferred range for the pressure ratio. 114.-. (canceled)15300. A method of operating a gaseous-fuelled direct injection internal combustion engine , the method comprising injecting said gaseous fuel directly into a combustion chamber at an injection pressure higher than bar wherein a ratio between said injection pressure and a peak cylinder pressure is between 1.6:1 and 3:1.16. The method of wherein said ratio is between 2. 5:1 and 2.8:1.17. The method of wherein said injection pressure is less than 540 bar.18. The method of wherein said injection pressures is less than 440 bar.19. The method of further comprising detecting the NOx emissions generated by operating said engine and increasing the amount of exhaust gas recirculated to the engine intake whereby said NOx emissions are maintained below a maximum predetermined level.20. The method of wherein said injection pressure is determined based on a fuel delivery parameter which is a function of a predetermined static flow rate for said gaseous fuel through an injector nozzle and a predetermined engine power per cylinder.21. The method of wherein said fuel delivery parameter has a value in the range between 0.45 and 0.6.22. The method of further comprising detecting the NOx emissions generated by operating said engine and increasing the amount of exhaust gas recirculated to the engine intake whereby said NOx emissions are maintained below a maximum predetermined level.23. The ...

FUEL INJECTION CONTROL DEVICE FOR INTERNAL-COMBUSTION ENGINE

In the present disclosure, pressurized fuel is directly injected from a fuel injection valve into a cylinder, and a fuel pressure is controlled to a target fuel pressure. A target fuel pressure during early depressurization is calculated on the basis of a target amount of intake air that is a target load of an internal-combustion engine, a target fuel pressure during a normal state is set on the basis of an actual amount of intake air that is an actual load of the internal-combustion engine, and a lower one of the target fuel pressure during early depressurization and the target fuel pressure during a normal state is set as the target fuel pressure. 1. A fuel injection control device for an internal-combustion engine that directly injects pressurized fuel from a fuel injection valve into a cylinder comprising:a fuel pressure controller that controls, to a target fuel pressure, a fuel pressure that is a pressure of fuel fed to the fuel injection valve;a target load acquisition controller that acquires a target load that is a target of a load of the internal-combustion engine;a first target fuel pressure setting controller that sets a first target fuel pressure on a basis of the acquired target load;an actual load acquisition controller that acquires an actual load of the internal-combustion engine; anda second target fuel pressure setting controller that sets a second target fuel pressure on a basis of the acquired actual load,wherein the fuel pressure controller performs target-fuel-pressure-control-during-deceleration by setting a lower one of the first target fuel pressure and the second target fuel pressure as the target fuel pressure during deceleration of the internal-combustion engine.2. The fuel injection control device according to claim 1 , further comprising a deceleration determining controller that determines a deceleration state of the internal-combustion engine on a basis of an amount of decrease of a degree of opening of an accelerator pedal or an ...

Method For Regulating A Fuel Delivery System

A method for regulating a fuel delivery system without a pressure sensor. The fuel delivery system has a fuel delivery pump, an electric motor, and an evaluation unit. The fuel delivery pump is driven by the electric motor, which is actuated using control variables such that a prespecifiable fuel delivery is achieved. At least two different submethods are executed for ascertaining control variables, which are ascertained in the respective submethod and are supplied to an evaluation unit. The control variables are evaluated regarding their plausibility in the evaluation unit and the electric motor is actuated based on the ascertained control variables from only one or a plurality of submethods. 110.-. (canceled)11. A method for regulating a fuel delivery system without a pressure sensor , wherein the fuel delivery system has a fuel delivery pump , an electric motor that drives the fuel delivery pump , and an evaluation unit , wherein the electric motor is actuated using control variables such that a prespecifiable fuel delivery is achieved , comprising:executing at least two different submethods to ascertain the control variables;supplying the the control variables which are ascertained to an evaluation unit;evaluating the control variables regarding their plausibility in the evaluation unit; andactuating the electric motor based at least in part on the ascertained control variables from only one of the at least two different submethods or from the at least two different submethods.12. The method as claimed in claim 11 , wherein the submethods are executed at least one of in parallel and in series.13. The method as claimed in claim 11 , further comprising:evaluating the plausibility of the control variables with aid of external state variables;determining a current operating state based at least in part on the external state variables; andderiving limit values for the control variables from the current operating state that is currently established.14. The method as ...

METHOD FOR OPERATING AN INTERNAL COMBUSTION ENGINE, DEVICE FOR THE OPEN-LOOP AND/OR CLOSED-LOOP CONTROL OF AN INTERNAL COMBUSTION ENGINE, INJECTION SYSTEM AND INTERNAL COMBUSTION ENGINE

A method for operating an internal combustion engine having a number of cylinders and an injection system having an injection system that has a common rail and a number of injectors associated with the cylinders, wherein an individual accumulator is associated with each injector and stores fuel from the common rail for the injector. The method has the following steps: starting the internal combustion engine, operating the internal combustion engine, shutting off the internal combustion engine. The following steps are also provided: a state indicating an engine standstill is detected, in particular after the internal combustion engine has been shut off, a high-pressure limit value is defined and a target high pressure is specified, a leakage is produced in the common rail without injection, the fuel pressure in the common rail is reduced to the defined high-pressure limit value below the target high pressure by way of the leakage. 111-. (canceled)12. A method for operating an internal combustion engine having a number of cylinders and an injection system comprising a common rail with a number of injectors associated with the cylinders and similar high-pressure components , in particular wherein a single reservoir that is embodied for holding fuel from the common rail for an injector is associated with the injector , the method comprising the steps of:starting the internal combustion engine;operating the internal combustion engine;stopping the internal combustion engine;detecting a state characterizing a stopped engine after stopping the internal combustion engine;determining a high pressure limit value and specifying a setpoint high pressure;producing a leak in the common rail without injection; anddecreasing fuel pressure in the common rail to a specified high pressure limit value below the setpoint high pressure by way of the leak.13. The method according to claim 12 , wherein when starting the internal combustion engine a high pressure control for regulating the ...

Fuel injection control system for an internal combustion engine

In a fuel injection control system for an internal combustion engine provided with a low pressure fuel pump and a high pressure fuel pump, proportional plus integral control of a high pressure fuel pump is carried out to make a pressure of fuel come close to a target value between the high pressure fuel pump and fuel injection valves. In cases where the high pressure fuel pump is in operation, a feed pressure, which is a pressure of fuel between a low pressure fuel pump and the high pressure fuel pump, is caused to go down when an integral term in the proportional plus integral control does not change or is decreasing, and the feed pressure is caused to go up when the integral term is increasing. In cases where the high pressure fuel pump is in a stopped state, the feed pressure is made higher than before the high pressure fuel pump is stopped.

Method for determining at least one injection parameter of an internal combustion engine, and internal combustion engine

A method for determining at least one injection parameter of an internal combustion engine, including the following steps: detecting a pressure profile in a time-resolved manner in an injection system of an internal combustion engine at least during an injection; providing a reference pressure profile for at least one operating point of the injection system; comparing the detected pressure profile with the reference pressure profile, and ascertaining at least one injection parameter as a function of the comparison.

Methods and system for diagnosing a high-pressure fuel pump in a fuel system

Various methods and systems are provided for health assessments of a fuel system. In one example, a fuel system includes a high-pressure fuel pump operable to increase fuel pressure from a first pressure to a second pressure, a common fuel rail fluidly coupling the high-pressure fuel pump to a plurality of fuel injectors each of which is operable to inject fuel to individual cylinders of an engine, a pressure sensor operable to detect a pressure of fuel at the common fuel rail, and a controller operable to diagnose a condition of the high-pressure fuel pump based on output from the pressure sensor.

METHOD FOR REQUIREMENT-BASED SERVICING OF AN INJECTOR

A method for requirement-based servicing of an injector in a common-rail system in which, during ongoing operation of the engine, a current operating point is stored as a function of the rail pressure and of the fuel injection mass, and the current operating point is multiplied by a damage factor and is stored as a reference injection cycle as a function of the rail pressure as well as of the fuel injection mass. A total reference injection cycle is calculated by forming sums over the reference injection cycles, and a load factor is calculated as a function of the total reference injection cycle and the permissible injection cycles, and the load factor is set as decisive for the servicing recommendation of the injector. 16-. (canceled)7. A method for requirement-based servicing of an injector in a common rail system of an engine , comprising the steps of: storing a current operating point as a function of rail pressure and of fuel injection mass during an ongoing operation of the engine , the current operating point being multiplied by a damage factor and being stored as a reference injection cycle as a function of the rail pressure and of the fuel injection mass; calculating a total reference injection cycle by forming sums of the reference injection cycles; calculating a load factor as a function of the total reference injection cycle and permissible injection cycles; and setting the load factor as decisive for a servicing recommendation of the injector.8. The method according to claim 7 , further including comparing the load factor with a limiting value claim 7 , and calculating a remaining time margin and generating a servicing recommendation to replace the injector when the limiting value is exceeded.9. The method according to claim 8 , including predicting a remaining running time for continued operation when the limiting value is undershot.10. The method according to claim 7 , including reading out the damage factor from a damage factor characteristic diagram ...

Control system including control device for internal combustion engine

A control system includes an internal combustion engine and a control device. The internal combustion engine includes a pressurization device. The pressurization device includes a housing having a cylindrical shape, a piston, a pressurization chamber, a piston chamber, a pressurization control chamber, and a switching device configured to selectively connect the pressurization control chamber with a high pressure fuel channel or a low pressure fuel channel. The control device estimates the temperature of the low pressure fuel channel, When the estimated temperature of the low pressure fuel channel is lower than the temperature of the pressurization device, and the temperature of the pressurization device is higher than a predetermined cooling request temperature, the control device controls the switching device to connect the pressurization control chamber with the low pressure fuel channel.

Solenoid Valve for a Fuel Injection System, and High Pressure Fuel Pump

There is disclosed a solenoid valve for a fuel injection system, in which solenoid valve a closing element which interacts with a valve seat in order to close and open the solenoid valve is actuated by a control pin, the control pin being formed by way of a solenoid plunger. Furthermore, a high pressure fuel pump is disclosed which has a solenoid valve of this type. 1. A solenoid valve for a fuel injection system , comprising:a valve region with a closing element and a valve seat which interact in order to close the solenoid valve; andan actuator region with a control pin for moving the closing element along a movement axis into an open or closed position, the actuator region having a stationary pole piece with a pole piece bore which is arranged in the pole piece, and a solenoid plunger which is movable relative to the pole piece along the movement axis and is arranged with a pole piece end in the pole piece bore in a contactless manner with respect to the pole piece, the solenoid plunger forming the control pin.2. The solenoid valve as claimed in claim 1 , wherein the valve region has a valve seat plate which forms the valve seat claim 1 , the closing element being configured as a small plate which lies on the valve seat plate in the closed position of the solenoid valve claim 1 , the pole piece and the small plate being arranged on opposite sides of the valve seat plate.3. The solenoid valve as claimed in claim 2 , wherein the solenoid plunger is configured as a cylindrical pin which penetrates the valve seat plate with a valve seat plate end in a contactless manner.4. The solenoid valve as claimed in claim 1 , further comprising a stop limiting movement travel of the solenoid plunger along the movement axis claim 1 , the stop configured on the solenoid plunger.5. The solenoid valve as claimed in claim 4 , wherein the stop is configured at a pole piece end of the solenoid plunger for interaction with the pole piece claim 4 , or at a valve seat plate end of the ...

FUEL HEATING

A vehicle comprising: an internal combustion engine configured to generate an engine torque using high-gasoline content fuel; at least one fuel injector configured to deliver the high-gasoline content fuel to a cylinder of the engine; at least one heating element configured to heat the high-gasoline content fuel prior to it being delivered to the cylinder by the fuel injector; a fuel pump connected to the heating element to supply high-gasoline to the heating element, the fuel pump being configured to pressurise the high-gasoline content fuel; and an engine controller configured to control the engine torque generated by the engine and control the fuel pressure generated by the fuel pump, the engine controller using a heated-fuel behaviour model of the engine, when the fuel is being heated by the heating element(s), to: (i) control an amount of fuel delivered by the fuel injector, the heated-fuel behaviour model causing a reduced fuel injection amount for a given engine torque relative to unheated high-gasoline content fuel; and (ii) cause a higher fuel pressure to be generated by the fuel pump relative to unheated high-gasoline content fuel. 128-. (canceled)29. A vehicle comprising:an internal combustion engine configured to generate an engine torque using high-gasoline content fuel;at least one fuel injector configured to deliver the high-gasoline content fuel to a cylinder of the engine;at least one heating element configured to heat the high-gasoline content fuel prior to it being delivered to the cylinder by the fuel injector;a fuel pump connected to the heating element to supply high-gasoline content fuel to the heating element, the fuel pump being configured to pressurise the high-gasoline content fuel; andan engine controller configured to control the engine torque generated by the engine and control the fuel pressure generated by the fuel pump,wherein the engine controller uses a heated-fuel behaviour model of the engine, when the fuel is being heated by the ...

FUEL PRESSURE CONTROL DEVICE FOR INTERNAL COMBUSTION ENGINE

The invention is related to a fuel pressure control device for an internal combustion engine, which controls a pressure of fuel supplied to a fuel injection valve and includes: a fuel pump, adopting the internal combustion engine as a driving source, and discharging pressurized fuel to a side of the fuel injection valve; a boost control part, setting a fuel discharge amount of the high-pressure fuel pump to a maximum value for boosting a pressure from a time when cranking starts until a predetermined timing halfway during a startup of the internal combustion engine; and a limit control part, performing limit control which follows the boost control and limits the fuel discharge amount to an upper limit. 1. A fuel pressure control device for an internal combustion engine , wherein the fuel pressure control device controls a pressure of fuel supplied to a fuel injection valve , and the fuel pressure control device comprises:a fuel pump, adopting the internal combustion engine as a driving source, and discharging pressurized fuel to a side of the fuel injection valve;a boost control part, performing boost control of setting a fuel discharge amount of the fuel pump to a predetermined value for boosting the pressure of the fuel from a time when cranking starts until a predetermined timing halfway during a startup of the internal combustion engine; anda limit control part, performing limit control following the boost control, wherein the limit control limits the fuel discharge amount by using an upper limit smaller than the predetermined value.2. The fuel pressure control device for the internal combustion engine as claimed in claim 1 , wherein a target fuel pressure is set as a target value of the pressure of the fuel necessary for injecting the fuel from the fuel injection valve claim 1 , andthe fuel pressure control device further comprises a fuel pressure detection part which detects the pressure of the fuel, andthe predetermining timing is a timing at which the ...

METHOD FOR CONTROLLING THE RAIL PRESSURE IN AN INJECTION SYSTEM

A method for regulating the rail pressure in an injection system of a motor vehicle is described. For the purpose of regulating the rail pressure, a high-pressure pump, which is provided with a digital inlet valve, is actuated, wherein the digital inlet valve is activated such that it is matched to the delivery and suction phase physically present. In this way, it is possible for pressure regulation to be achieved by way of a digital valve even for transmission ratios at which the pump does not have exactly a multiple of delivery and suction phases during two engine cycles. 1. A method for regulating rail pressure in an injection system of a motor vehicle engine having a crankshaft , by actuation of a high-pressure pump which is provided with a digital inlet valve , comprising:carrying out blind energization of the digital inlet valve for opening and closing the valve;recording a pressure signal from the rail during the blind energization and determining therefrom a top dead center of a pump stroke of the high-pressure pump;approximately determining a crankshaft position for the determined top dead center of the pump stroke;selecting a correct reference between the top dead center of the pump stroke and a top dead center of the engine corresponding to a physical relationship resulting from a transmission ratio Np:Nm, wherein NP is a rotational speed of the pump and Nm is a rotational speed of the engine, by using the approximately determined crankshaft position of the pump;carrying out switching reduction by selecting only those active top dead centers of the pump stroke which correspond to the selected correct reference; andcarrying out activation of the digital inlet valve solely on the basis of the selected top dead centers of the pump stroke, with ending of the blind energization.2. The method as claimed in claim 1 , wherein the selected correct reference is checked for plausibility in at least one following engine segment claim 1 , and a switch to activation of ...

METHOD AND DEVICE FOR OPERATING AN INTERNAL COMBUSTION ENGINE COMPRISING A HIGH-PRESSURE FUEL INJECTION SYSTEM

A method for operating an internal combustion engine having a high-pressure fuel injection system stops and starts the engine independently of an intervention by the motor vehicle operator and then restarted. A high-pressure fuel pump is used to pump fuel to a high-pressure reservoir to which at least one high-pressure fuel injector is connected in order to inject fuel into the at least one cylinder of the internal combustion engine. Fuel pressure can be adjusted on the high-pressure side using an electrically actuated pressure reduction valve (PDV). 1. A method for operating an internal combustion engine comprising a high-pressure fuel injection system (HD_SYS) for an internal combustion engine of a motor vehicle , said system having an automatic stop/start function , by which the internal combustion engine can be switched off independently of an intervention by the motor vehicle operator and then restarted , and in which a high-pressure fuel pump is used to pump fuel to a high-pressure reservoir to which at least one high-pressure fuel injector is connected in order to inject fuel into the at least one cylinder of the internal combustion engine , and the fuel pressure can be adjusted on the high-pressure side using an electrically actuated pressure reduction valve (PDV) , the method comprising:when the internal combustion engine is stopped, opening the pressure reduction valve (PDV) until a specified value of an injection release pressure is established which ensures a restart after a stop phase within a stop/start cycle, and the pressure reduction valve (PDV) is subsequently closed,determining whether a restart of the internal combustion engine takes place within a specified time period,injecting fuel using the value of the release pressure if a restart occurs within the specified time period,otherwise, opening the pressure reduction valve (PDV) after the specified time period expires until the pressure of the fuel in the high-pressure reservoir has decreased to ...

METHODS AND SYSTEM FOR DIAGNOSING A HIGH-PRESSURE FUEL PUMP IN A FUEL SYSTEM

Various methods and systems are provided for health assessments of a fuel system. In one example, a fuel system includes a high-pressure fuel pump operable to increase fuel pressure from a first pressure to a second pressure, a common fuel rail fluidly coupling the high-pressure fuel pump to a plurality of fuel injectors each of which is operable to inject fuel to individual cylinders of an engine, a pressure sensor operable to detect a pressure of fuel at the common fuel rail, and a controller operable to diagnose a condition of the high-pressure fuel pump based on output from the pressure sensor. 1. A fuel system , comprising:a fuel pump operable to increase fuel pressure from a first pressure to a second pressure;a common fuel rail fluidly coupling the fuel pump to a plurality of fuel injectors each operable to inject fuel to individual cylinders of an engine;a pressure sensor operable to detect a pressure of fuel at the common fuel rail; anda controller operable to diagnose a condition of the fuel pump based on output from the pressure sensor.2. The fuel system of claim 1 , wherein the fuel pump includes a plurality of pumping chambers claim 1 , each pumping chamber including a piston actuatable by one or more cam lobes coupled to a common pump drive shaft claim 1 , and each pumping chamber further including a respective check valve.3. The fuel system of claim 2 , wherein to diagnose the condition claim 2 , the controller is operable tosample the output from the pressure sensor multiple times during at least one rotation of the drive shaft;process the sampled output to obtain a pressure signal; anddetermine a plurality of peaks of the pressure signal, each peak corresponding to a pumping action of a respective pumping chamber of the plurality of pumping chambers.4. The fuel system of claim 3 , wherein the condition includes a degraded check valve claim 3 , and wherein the controller is operable to diagnose the degraded check valve as weakly functional responsive ...

SYSTEM FOR CONTROLLING THE POWERTRAIN OF A HYBRID VEHICLE WITH MANAGEMENT OF EXCESS PRESSURE IN THE FUEL RAIL

A system for controlling the powertrain of a hybrid vehicle which includes an internal combustion engine, an electric machine, and an electric accumulator, the system performing the following steps: detecting an overpressure in the injection rail, with respect to a setpoint pressure; injecting into the internal combustion engine a predetermined quantity of fuel corresponding to the volume of fuel to be removed from the injection rail in order to lower the pressure in the injection rail down to the setpoint pressure; and operating the electric machine in generator mode to absorb the torque generated by the injection of the predetermined quantity of fuel into the internal combustion engine. 141569. A system for controlling the powertrain () of a hybrid vehicle () which comprises an internal combustion engine () , an electric machine () , and an electric accumulator () , the system being designed to:{'b': 5', '13', '5', '1, 'inject fuel into the internal combustion engine () using a pressurized injection rail () so that the internal combustion engine () delivers torque which contributes to the propulsion of the hybrid vehicle ();'}{'b': 6', '6', '9', '1', '6', '9, 'operate the electric machine () in one of the following modes: a motor mode in which the electric machine () is electrically powered by the electric accumulator () and delivers torque which contributes to the propulsion of the hybrid vehicle (); and a generator mode in which the electric machine () absorbs torque and charges the electric accumulator ();'}the system performing the following steps:{'b': '13', 'detecting an overpressure in the injection rail (), with respect to a setpoint pressure;'}{'b': 5', '13', '13, 'injecting into the internal combustion engine () a predetermined quantity of fuel corresponding to the volume of fuel to be removed from the injection rail () in order to lower the pressure in the injection rail () down to the setpoint pressure;'}{'b': 6', '5, 'operating the electric machine () ...

Controller for Determining the Injected Volume of a Fluid in an Injection System of a Motor Vehicle

Various embodiments may include a method for controlling an injection process in which a fluid is conveyed to an injection element through a line system comprising: determining a time of a maximum pressure gradient caused by the injection process, based on output signals of a first pressure sensor; calculating a difference between the maximum pressure gradient and a start time; determining a propagation speed of the fluid in the line system based on the difference; determining a rigidity of the line system based on the propagation speed; determining an injected volume of the fluid based on the determined rigidity of the line system; and controlling the injection process based on the injected volume determined.

CONTROL DEVICE FOR INTERNAL COMBUSTION ENGINE

A control device for an internal combustion engine is configured, where a designated cam switching condition is met, to execute a boost pressure control processing and an air amount control processing. In the boost pressure control processing, the control device controls a boost pressure control device such that a boost pressure control parameter does not increase in synchronization with execution of a cam switching operation and decreases in accordance with an increase of a required engine torque after the execution of the cam switching operation. In the air amount control processing, the control device controls the opening degree of a throttle valve to its closed side in synchronization with the cam switching operation such that a difference of an in-cylinder charge air amount is not produced before and after the execution of the cam switching operation. 1. A control device for an internal combustion engine ,the internal combustion engine including:a turbocharger equipped with a compressor arranged in an intake air passage and a turbine arranged in an exhaust gas passage;a throttle valve arranged in a portion of the intake air passage located on an upstream side of the compressor;a boost pressure control device configured to control a boost pressure of the turbocharger by changing a boost pressure control parameter whose value is made smaller when an amount of exhaust energy recovered by the turbine is made greater; anda cam switching device configured to switch, between a first cam and a second cam that is selected to achieve a charging efficiency of intake air higher than that achieved with the first cam, a cam that drives a valve that opens and closes a combustion chamber,wherein the control device is configured to:where a designated cam switching condition that a cam switching operation from the first cam to the second cam is performed in response to an increase of a required engine torque during use of a high-load region where a throttle-downstream pressure ...

Controller for internal combustion engine, internal combustion engine, and control method of internal combustion engine

When a pressure of fuel is intensified using a pressure intensifier an electronic control unit is configured to set a target common rail pressure to be higher as a fuel leakage volume that is a volume of fuel leaking from a common rail to a fuel tank becomes larger until a three-way valve is switched from a state in which the pressure intensifier is connected to the common rail to a state in which the pressure intensifier is connected to the fuel tank.

METHOD AND APPARATUS FOR ADJUSTABLE FUEL PRESSURE MODULE

Method and apparatus for adjustable fuel pressure module. In accordance with an embodiment of the present invention, an apparatus for regulating fuel pressure comprises a body configured to mate to a fuel filter housing, a spring seat assembly configured to seal an opening in the fuel filter housing according to a force applied by a pressure regulating spring acting on the spring seat assembly, and a pressure regulating spring adjusting assembly mounted to the body, configured to constrain an adjustable length of the pressure regulating spring, wherein the spring is constrained between the spring seat assembly and the pressure regulating spring adjusting assembly. A force exerted upon the spring seat assembly by the pressure regulating spring corresponds to a desirable fuel pressure. The spring seat assembly is configured to unseal the opening in the fuel filter housing responsive to a fuel pressure greater than the desirable fuel pressure. 1. An apparatus for regulating fuel pressure , comprising:a body configured to mate to a fuel filter housing;a spring seat assembly configured to seal an opening in said fuel filter housing according to a force applied by a pressure regulating spring acting on said spring seat assembly;a pressure regulating spring adjusting assembly mounted to said body, configured to constrain an adjustable length of said pressure regulating spring, wherein said spring is constrained between said spring seat assembly and said pressure regulating spring adjusting assembly,wherein a force exerted upon said spring seat assembly by said pressure regulating spring corresponds to a desirable fuel pressure, andwherein said spring seat assembly is configured to unseal said opening in said fuel filter housing responsive to a fuel pressure greater than said desirable fuel pressure.2. The apparatus of wherein said body further comprises a fuel return orifice configured to allow fuel that bypasses said spring seat assembly to exit said body.3. The apparatus ...

METHODS AND SYSTEM FOR DIAGNOSING A HIGH-PRESSURE FUEL PUMP IN A FUEL SYSTEM

Systems and methods are provided herein for tracking degradation of a high-pressure fuel pump. In one example, a fuel system controller is configured to receive an output pressure signal from a pressure sensor, transform the output pressure signal to the frequency domain to generate frequency content of the output pressure signal, and diagnose a condition of a fuel pump based at least in part on the frequency content of the output pressure signal, the fuel pump fluidly coupled to a fuel injector via a common fuel rail, and the fuel injector is operable to inject fuel to a cylinder of an engine. 1. A fuel system , comprising:a fuel pump operable to increase fuel pressure from a first pressure to a second pressure, the fuel pump including a plurality of pumping chambers, each pumping chamber including a piston actuatable by one or more cam lobes coupled to a common pump drive shaft, and each pumping chamber further including a respective check valve;a common fuel rail fluidly coupled to the fuel pump and to a fuel injector, and the fuel injector is operable to inject fuel to a cylinder of an engine;a pressure sensor operable to detect a pressure of fuel in the common fuel rail; and receive an output pressure signal from the pressure sensor;', 'transform the output pressure signal to the frequency domain to generate frequency content of the output pressure signal; and', 'diagnose a condition of the fuel pump based at least in part on the frequency content of the output pressure signal., 'a controller operable to2. The fuel system of claim 1 , wherein the controller is operable to identify a primary frequency component of the frequency content and one or more key frequency components of the frequency content and diagnose the condition of the fuel pump based at least in part on the primary frequency component of the frequency content and one or more key frequency components of the frequency content.3. The fuel system of claim 2 , wherein the controller is operable to ...

HIERARCHICAL ENGINE CONTROL SYSTEMS AND METHODS

A system for control of an internal combustion system having subsystems, each with different response times. Subsystems may include a fuel system, an air handling system, and an aftertreatment system, each being operated in response to a set of reference values generated by a respective target determiner. Calibration of each subsystem may be performed independently. The fuel system is controlled at a first time constant. The air handling system is controlled on the order of a second time constant slower than the first time constant. The aftertreatment system is controlled on the order of a third time constant slower than the second time constant. A subsystem manager is optionally in operative communication with each target determiner to coordinate control. Generally, dynamic parameters from slower subsystems are treated as static parameters when determining reference values for controlling a faster subsystem. 1. A system comprising:a fuel system having a first response time;an air handling system having a second response time, the second response time being slower than the first response time;an aftertreatment system having a third response time, the third response time being slower than the second response time; and interpret a first basis variable set for the fuel system, a second basis variable set for the air handling system, and a third basis variable set for the aftertreatment system;', 'determine a first reference value set in response to the first basis variable set within a first time period determined in response to the first response time;', 'determine a second reference value set in response to the second basis variable set within a second time period determined in response to the second response time;', 'determine a third reference value set in response to the third basis variable set within a third time period determined in response to the third response time; and', 'provide one or more control commands to each of the fuel system, the air handling ...

REFERENCE VALUE ENGINE CONTROL SYSTEMS AND METHODS

Methods and apparatuses for calibration and control of various engine subsystems using a target value approach. Under the target value approach, the control of each engine subsystem is separated or decoupled to include a set of target values, or a reference value set. A subsystem has a corresponding target determiner, which provides a target value set, or reference value set, in response to a basis variable set and optionally an overall subsystem target. The basis variable set includes parameters selected to robustly characterize the variables that affect the operation of the particular subsystem. The target determiner is optionally calibrated to provide a reference value set within specifications of the subsystem. A physical subsystem controller operates in response to the reference value set. 1. A method , comprising:interpreting a basis variable set, the basis variable set including a predicted engine speed trajectory, a predicted fueling trajectory, and an ambient value;determining a reference value set in response to the basis variable set and an air handling controller specification set, wherein the reference value set includes a mass charge flow (MCF) value; andproviding the reference value set to an air handling control commander.2. The method of claim 1 , wherein the basis variable set includes an aftertreatment state value and the reference value set includes an exhaust gas recirculation (EGR) fraction value.3. The method of claim 2 , further including interpreting an aftertreatment state value including at least one of a space-velocity value claim 2 , a catalyst related temperature claim 2 , an ammonia storage value claim 2 , a diesel particulate filter (DPF) loading value claim 2 , and a NOconversion efficiency value.4. The method of claim 2 , wherein the reference value set includes a pumping work target.5. The method of claim 1 , further delivering air to an internal combustion engine in response to the reference value set.6. The method of claim 1 , ...

FUEL TYPE ESTIMATION SYSTEM, DATA ANALYSIS APPARATUS, AND CONTROL APPARATUS FOR FUEL SUPPLY APPARATUS

A fuel type estimation system configured to estimate a type variable related to a type of fuel in an engine system including an engine and a fuel supply apparatus includes a storage device and an execution device. The storage device is configured to store a mapping that uses, as inputs, input variables including an engine variable related to a condition of the engine and outputs the type variable. The execution device is configured to acquire the input variables, and estimate the type variable by applying the acquired input variables to the mapping. 1. A fuel type estimation system configured to estimate a type variable related to a type of fuel in an engine system , the engine system including an engine including a fuel injection valve , and a fuel supply apparatus including a fuel pump configured to supply the fuel in a fuel tank to a supply pipe connected to the fuel injection valve , the fuel type estimation system comprising:a storage device configured to store a mapping that uses, as inputs, input variables including an engine variable related to a condition of the engine and outputs the type variable; andan execution device configured to acquire the input variables, and estimate the type variable by applying the acquired input variables to the mapping.2. The fuel type estimation system according to claim 1 , wherein the engine variable includes at least a part of:an intake air temperature variable related to an intake air temperature of the engine;an air-fuel ratio variable related to an air-fuel ratio of the engine;a coolant temperature variable related to a temperature of a coolant of the engine;an oil temperature variable related to a temperature of lubricating oil of the engine;an engine speed variable related to a rotation speed of the engine;a load factor variable related to a load factor of the engine;an engine torque variable related to a torque of the engine; andan ignition timing variable related to an ignition timing of the engine.3. The fuel type ...

FUEL PRESSURE ESTIMATION SYSTEM

A storage device is configured to store a first mapping that receives, as an input, a first input variable including a cam phase variable on present and past phases of a cam, and output a pulsating variable on a pulsating component. The execution device is configured to acquire the first input variable and estimate the pulsating variable by applying the acquired first input variable to the first mapping. Therefore, it is possible to estimate the pulsating variable without providing a low-pressure fuel pressure sensor by estimating a fuel pressure variable by applying the first input variable to the first mapping. 1. A fuel pressure estimation system , the fuel pressure estimation system being configured to estimate a pulsating variable on a pulsating component of a low-pressure fuel pressure , which is a pressure of fuel in a low-pressure supply pipe for an engine apparatus including a cylinder injection valve that injects fuel in a cylinder , and a fuel supply device that has a fuel pump and a high-pressure pump , the fuel pump supplying fuel in a fuel tank to the low-pressure supply pipe and the high-pressure pump pressurizing the fuel in the low-pressure supply pipe by a plunger , which is driven according to rotation of a cam , and supplying the fuel to a high-pressure supply pipe connected to the cylinder injection valve , and comprising:a storage device configured to store a first mapping that receives, as an input, a first input variable including a cam phase variable on present and past phases of the cam, and outputs the pulsating variable on the pulsating component; andan execution device configured to acquire the first input variable and estimate the pulsating variable by applying the first input variable to the first mapping.2. The fuel pressure estimation system according to claim 1 , wherein the first input variable further includes at least a part of an engine rotation speed variable on present and past rotation speeds of an engine claim 1 , a load ...

FUEL PRESSURE ESTIMATION SYSTEM

A fuel pressure estimation system estimates a fuel pressure variable on a fuel pressure in a supply pipe for an engine apparatus including an engine having a fuel injection valve, and a fuel supply device having a fuel pump that supplies the fuel in a fuel tank to the supply pipe, and includes a storage device and an execution device. The storage device stores a first mapping that receives, as an input, first input variables including a pump variable, a consumption flow rate variable on a consumption flow rate of the fuel, and a property variable on a property of the fuel, and outputs the fuel pressure variable. The execution device acquires the first input variables and estimates the fuel pressure variable by applying the first input variables to the first mapping. 1. A fuel pressure estimation system configured to estimate a fuel pressure variable on a fuel pressure , which is a pressure of fuel in a supply pipe , for an engine apparatus including an engine having a fuel injection valve and a fuel supply device having a fuel pump that supplies the fuel in a fuel tank to the supply pipe connected to the fuel injection valve , the fuel pressure estimation system comprising:a storage device configured to store a first mapping that receives, as an input, first input variables including a pump variable on a state of the fuel pump, a consumption flow rate variable on a consumption flow rate of the fuel of the engine, and a property variable on a property of the fuel, and outputs the fuel pressure variable; andan execution device configured to acquire the first input variables and estimate the fuel pressure variable by applying the first input variables to the first mapping.2. The fuel pressure estimation system according to claim 1 , wherein the property variable includes a fuel temperature variable on a fuel temperature claim 1 , which is a temperature of the fuel.3. The fuel pressure estimation system according to claim 2 , wherein:the storage device is configured to ...

Dual-fuel supply system for direct injection

A dual-fuel supply system ( 100 ) for direct injection for engines of heavy vehicles, comprising: a supply line of a combustible liquid ( 160 ); a supply line of a combustible gas ( 170 ); a plurality of injectors ( 150 ) in fluid communication with the supply line of the combustible liquid ( 160 ) and with the supply line of the combustible gas ( 170 ); a pressure regulator device ( 1 ) for regulating the combustible gas; an electronic control unit (ECU) configured to control the supply of combustible liquid and of the combustible gas to the injectors ( 150 ), the electronic control unit (ECU) being configured to control the pressure regulator device ( 1 ) to track a reference pressure (p target ) according to a feedback logic.

METHOD FOR OPERATING AN INTERNAL COMBUSTION ENGINE HAVING AN INJECTION SYSTEM, AND INJECTION SYSTEM FOR CARRYING OUT SUCH A METHOD

A method for operating an internal combustion engine having an injection system having a high-pressure accumulator, wherein an instantaneous high pressure in the high-pressure accumulator is monitored in a time-dependent manner by a high-pressure sensor. A first alarm stage is set, if a) a first predetermined high-pressure limit value is exceeded without interruption by the instantaneous high pressure for a predetermined limit time period, and/or b) if the first predetermined high pressure limit value is exceeded for the first time at a predetermined, first limit frequency by the instantaneous high pressure. 110-. (canceled)11. A method for operating an internal combustion engine with an injection system that has a high-pressure accumulator , comprising the steps of: monitoring an instantaneous high pressure in the high-pressure accumulator against time by a high pressure sensor; and , setting a first alarm stage whena) a first predetermined high pressure limit value of the instantaneous high pressure is continuously exceeded for a predetermined limit period, and/or whenb) the first predetermined high pressure limit value is exceeded for a first time by the instantaneous high pressure with a predetermined, first limit frequency.12. The method according to claim 11 , further comprising starting a recording of a period of time of the instantaneous high pressure exceeding the first high pressure limit value when the instantaneous high pressure reaches or exceeds the first high pressure limit value from below the first high pressure limit value claim 11 , and comparing the recorded period with the predetermined limit period.13. The method according to claim 11 , including incrementing a frequency value claim 11 , which indicates a current frequency of exceeding the first high pressure limit value by the instantaneous high pressure claim 11 , when the instantaneous high pressure exceeds the first high pressure limit value from below a second high pressure limit value ...

CONTROL APPARATUS FOR HYBRID VEHICLE

A fuel supply apparatus is operated so as to increase an upon-stopping fuel pressure in accordance with an increase in an upon-stopping vehicle speed, the upon-stopping fuel pressure being a fuel pressure in a state in which an internal combustion engine is intermittently stopped, the upon-stopping vehicle speed being a vehicle speed upon intermittently stopping the internal combustion engine. 1. A control apparatus for a hybrid vehicle , the hybrid vehicle comprising:an internal combustion engine having a direct injection injector; anda fuel supply apparatus generating a fuel pressure for fuel supplied to the direct injection injector in accordance with an operation state of the internal combustion engine,the control apparatus being included in the hybrid vehicle and being configured to start, by injecting the fuel from the direct injection injector, the internal combustion engine from a state in which the internal combustion engine is intermittently stopped, whereinthe control apparatus is configured to operate the fuel supply apparatus so as to increase an upon-stopping fuel pressure in accordance with an increase in an upon-stopping vehicle speed, the upon-stopping fuel pressure being a fuel pressure in the state in which the internal combustion engine is intermittently stopped, the upon-stopping vehicle speed being a vehicle speed upon intermittently stopping the internal combustion engine.2. The control apparatus for a hybrid vehicle claim 1 , according to claim 1 , whereina lowest fuel pressure is set for the upon-stopping fuel pressure, and to operate, when the upon-stopping vehicle speed is less than or equal to a predetermined vehicle speed, the fuel supply apparatus such that the upon-stopping fuel pressure becomes the lowest fuel pressure, and', 'to operate, when the upon-stopping vehicle speed is higher than the predetermined vehicle speed, the fuel supply apparatus such that the upon-stopping fuel pressure is increased so as to be higher than the ...

Controller and control method for internal combustion engine

A port injection valve injects fuel into an intake passage. A base injection amount is an injection amount proportional to an amount of fresh air introduced into a cylinder of an internal combustion engine. A division process involves dividing the base injection amount into a synchronous injection amount and an asynchronous injection amount. In an intake-synchronous injection, the fuel is injected in synchronization with a period in which an intake valve is open. In an intake-asynchronous injection, the fuel is injected at a time advanced with respect to the intake-synchronous injection. In a selective correction process, the asynchronous injection amount is corrected according to a required correction amount for the base injection amount, and the synchronous injection amount is not corrected.

METHOD FOR DETERMINIG THE LOADING STATUS OF A FILTER

A method for determining the load status of a filter mounted in a fuel supply system, comprising a fuel supply pump and a control unit for controlling the fuel supply pump, the time curve of the rotational speed of the fuel supply pump being detected over a predetermined period of time, and at least one value of the time curve of the rotational speed and its associated detection time being compared with a comparative value stored in a control unit 1. A method for determining the loading state of a filter situated in a fuel supply system , comprising the steps of:providing a fuel supply pump;providing a control unit for controlling the fuel supply pump;providing a temporal progression of the rotational speed of the fuel supply pump, the temporal progression having at least one value; andproviding at least one comparative value stored in the control unit;detecting the temporal progression of the rotational speed of the fuel supply pump over a predefined period of time;comparing the at least one value of the temporal progression of the rotational speed and its associated detection time with the at least one comparative value stored in the control unit.2. The method of claim 1 , further comprising the steps of:providing at least one predefined rotational speed of the fuel supply pump;comparing the detection time at which the at least one predefined rotational speed is reached with the at least one comparative value assigned to the predefined rotational speed;deriving the loading state of the filter from the difference between the detection time and the temporal comparative value.3. The method of claim 1 , further comprising the steps of defining the detection time by a pre-definable current intensity.4. The method of claim 1 , further comprising the steps of detecting the temporal progression of the rotational speed over the predefined period of time claim 1 , such that the predefined period of time corresponds to a run-up of the fuel supply pump from a standstill.5. ...

DIRECT INJECTION PUMP CONTROL

Methods are provided for controlling a solenoid spill valve of a direct injection fuel pump, wherein the solenoid spill valve is energized and de-energized according to certain conditions. An example control strategy is provided for operating the direct injection fuel pump when fuel vapor is detected at an inlet of the direct injection fuel pump. To ensure pump effectiveness during the presence of fuel vapor, the solenoid spill valve may be maintained energized for a minimum angular duration past a top-dead-center position of a piston in the direct injection fuel pump. 1. A method , comprising:energizing a solenoid spill valve of a direct injection fuel pump for or longer than a minimum angular duration based on a position of a piston in the direct injection fuel pump in response to fuel vapor detected at an inlet of the direct injection fuel pump.2. The method of claim 1 , wherein the fuel vapor is detected based on a fuel capacitance.3. The method of claim 2 , wherein the fuel capacitance is measured via a fuel composition sensor positioned downstream of a lift pump and upstream of the direct injection fuel pump claim 2 , the lift pump supplying fuel to the direct injection fuel pump.4. The method of claim 1 , wherein the solenoid spill valve is maintained energized until after a top-dead-center position of the piston is reached.5. The method of claim 1 , wherein energizing the solenoid spill valve includes sending signals to the solenoid spill valve from a controller.6. The method of claim 5 , wherein the controller further detects an angular position of a driving cam that powers the direct injection fuel pump in order to synchronize the energizing of the solenoid spill valve.7. The method of claim 1 , further comprising claim 1 , when the fuel vapor is not detected at the inlet of the direct injection fuel pump claim 1 , energizing the solenoid spill valve for only an angular duration based on the position of the piston of the direct injection fuel pump.8. The ...

Fuel system for an internal combustion engine

The present invention relates to a fuel system for a combustion engine, the fuel system comprising a low-pressure circuit comprising at least one fuel tank, at least one low-pressure fuel pump, a first fuel filter and a second fuel filter which is arranged downstream of the first fuel pump, and a high-pressure circuit comprising a high-pressure fuel pump. The high-pressure fuel pump comprises means to suck fuel from the low-pressure circuit and in case of failure in the at least one low-pressure fuel pump, to suck fuel from the low-pressure circuit and the fuel is arranged to by-pass the at least one low-pressure fuel pump and optionally, at least one of the first or second fuel filters, via at least one by-pass pipe comprising a check valve that prevents the flow of fuel back to the fuel tank.

FUEL INJECTION CONTROL DEVICE AND FUEL INJECTION SYSTEM

A fuel injection control device is adapted for a fuel injection system including an injector and a high-pressure pump that raises pressure of fuel and supplies the fuel to the injector. The fuel injection control device includes a selecting unit for selecting by which one of full lift injection and partial injection to inject fuel, and a pump control unit for controlling operation of the high-pressure pump such that a pressure of fuel supplied to the injector coincides with a target pressure. The selecting unit selects the partial injection when a required injection quantity of fuel is equal to or smaller than a partial maximum injection quantity. A fuel injection system includes the fuel injection control device, the injector, and the high-pressure pump.

Fuel injection device

A fuel injection device is used in an internal combustion engine having a combustion chamber partitioned by a cylinder head, a cylinder, and a piston crown surface so that at least one of the amount of NOx, Pmax, and a thermal efficiency η is maintained at a predetermined value. The fuel injection device includes a fuel injection change unit. The fuel injection change unit virtually divides the combustion chamber into N number of combustion zones where N is a natural number of 2 or more, and can change a fuel injection method according to the respective combustion zones. The fuel injection change unit divides the combustion chamber into the N number of combustion zones, thereby being capable of eliminating a difference of heat in the respective combustion zones, and precisely controlling an in-cylinder pressure P in the combustion chamber. As a result, the amount of NOx and the thermal efficiency can be optimized. Therefore, both of a reduction in the amount of NOx and the high thermal efficiency can be achieved.

METHOD FOR ESTIMATING A TOP DEAD CENTRE FOR A HIGH-PRESSURE PUMP OF A FUEL INJECTION SYSTEM IN AN AUTOMOTIVE VEHICLE ENGINE

Disclosed is a method for estimating an angular position of top dead center for a high-pressure fuel injection pump that forms part of a system for injecting fuel into a motor vehicle engine, the pump including at least one piston moving in a chamber between the top and the bottom dead center, the pump being equipped with a digital control valve for controlling a quantity of fuel, an electrical current being applied to the digital valve as it closes then removed in order to open the digital valve, a movement of the digital valve in the direction of opening creating an induced current which makes it possible to detect a position of start-of-opening of the digital valve. An instant at which the pump piston passes through top dead center is estimated as a function of an instant at which the position of start-of-opening of the digital valve appears. 1254112419425413131313132313419425231325231344. A method for estimating an angular position of top dead center () for a high-pressure fuel injection pump () that forms part of a system () for injecting fuel into a motor vehicle internal combustion engine () , the pump () comprising at least one piston () moving in a chamber of the pump () between a top dead center () for which the volume of the chamber is at its smallest and a bottom dead center for which the volume of the chamber is at its greatest , the pump () being equipped with a digital control valve () for controlling the quantity of fuel fuel delivery , this valve being commanded electrically between an open position in which a high-pressure part of the injection system is not supplied with fuel and a closed position in which the high-pressure part of the injection system is supplied with the digital valve () then being in a fully closed position , an electrical current being applied to the digital valve () as it closes then removed in order to open the digital valve () , a movement of the digital valve () toward its open position creating an induced current which , ...

METHOD AND SYSTEM FOR NON-FUNCTIONAL COMBUSTION CHAMBER DETECTION

Systems and methods for detecting at least one non-functional combustion chamber of an engine comprising a plurality of combustion chambers are described herein. In response to detecting a partial output power loss of the engine, one of the plurality of combustion chambers is assessed by monitoring an engine parameter indicative of an output power of the engine, determining whether a change in the engine parameter has occurred, when the change has occurred, determining that the combustion chamber is functional, and when no change has occurred, determining that the combustion chamber is non-functional and discontinuing fuel injection to the non-functional combustion chamber. 1. A method for detecting at least one non-functional combustion chamber of an engine comprising a plurality of combustion chambers , each combustion chamber for receiving a fuel-air mixture that when ignited causes the engine to generate output power , the method comprising:in response to detecting a partial output power loss of the engine, assessing one of the plurality of combustion chambers by:reducing fuel injection to the combustion chamber;monitoring an engine parameter indicative of the output power of the engine;determining whether a decrease in the engine parameter has occurred when fuel injection is reduced to the combustion chamber;if the decrease in the engine parameter has occurred, restoring fuel injection to the combustion chamber and assessing another one of the plurality of combustion chambers; andif no decrease in the engine parameter has occurred, determining that the combustion chamber is non-functional and discontinuing fuel injection to the combustion chamber.2. The method of claim 1 , wherein reducing fuel injection to the combustion chamber comprises decreasing an amount of fuel injected into the combustion chamber to substantially zero claim 1 , thereby shutting off fuel injection to the combustion chamber.3. The method of claim 2 , wherein discontinuing fuel injection ...

COMBUSTION CONTROL DEVICE

A timing computation unit determines whether to execute compression latter-half injection to inject fuel in a latter half of a compression stroke of an internal combustion engine based on an operation state of the engine and computes an injection timing and an ignition timing of fuel. A timing correction unit corrects the computed injection timing to an advance side and corrects the computed ignition timing to a retard side, in a case where a detected fuel pressure is lower than a target fuel pressure. The timing correction unit corrects the computed injection timing to the retard side and corrects the computed ignition timing to the advance side, in a case where the detected fuel pressure is higher than the target fuel pressure. A combustion control unit controls a fuel injection device and an ignition device based on the injection timing and the ignition timing. 1. A combustion control device for a combustion system , the combustion system including a fuel injection device to inject high-pressure fuel in a pressure accumulator into a combustion chamber of an internal combustion engine , an ignition device to ignite fuel in the combustion chamber , and a fuel pressure sensor to detect pressure of fuel to be injected into the combustion chamber , the combustion control device comprising:a target set unit configured to set a target fuel pressure based on an operation state of the internal combustion engine; to determine whether to execute compression latter-half injection to inject fuel in a latter half of a compression stroke of the internal combustion engine based on the operation state of the internal combustion engine and', 'to compute an injection timing and an ignition timing of fuel;, 'a timing computation unit configured'} to correct the injection timing of the compression latter-half injection, which is computed by the timing computation unit, to an advance side and to correct the ignition timing, which is computed by the timing computation unit, to a retard ...

ENGINE CONTROL DEVICE, ENGINE CONTROL METHOD, AND ENGINE SYSTEM

A controller for controlling a fuel injection valve and a fuel pressure adjustment mechanism sets an air-fuel ratio of a fuel-air mixture to be generated within a combustion chamber to be equal to or leaner than a theoretical air-fuel ratio, based on an operating condition of an engine; drives the fuel injection valve, based on the set air-fuel ratio; estimates a deposition amount of deposits on an injection hole of the fuel injection valve, based on an operating condition of the engine; causes the fuel pressure adjustment mechanism to increase the fuel pressure, when the estimated deposition amount of deposits exceeds a predetermined value; and restricts the fuel pressure from increasing, even when the estimated deposition amount of deposits exceeds the predetermined value, as long as the fuel-air ratio is set to an air-fuel ratio leaner than the theoretical fuel-air ratio. 1. A control device for an engine provided with a fuel injection valve disposed within a combustion chamber , a part of which is defined by a piston including a cavity in a crown surface thereof , and configured to directly inject fuel toward the cavity , the control device comprising:a fuel pressure adjustment mechanism for adjusting a fuel pressure of fuel to be supplied to the fuel injection valve; anda controller for controlling the fuel injection valve and the fuel pressure adjustment mechanism, and constituted of a circuitry, whereinthe controller is configured to:set an air-fuel ratio of a fuel-air mixture to be generated within the combustion chamber to an air-fuel ratio equal to or leaner than a theoretical air-fuel ratio, based on an operating condition of the engine;output a control signal to the fuel injection valve in such a way as to drive the fuel injection valve, based on the set air-fuel ratio;perform processing of estimating a deposition amount of deposits on an injection hole of the fuel injection valve, based on an operating condition of the engine;output a control signal to ...

METHOD AND SYSTEM FOR CORRECTING FUEL INJECTION AMOUNT

A method and system for correcting a fuel injection amount that injects fuel may include applying a current value for injecting a target fuel amount and injecting fuel under a driving condition in which fuel injection is blocked; determining a frequency analysis value for a pressure signal of the fuel pressure rail when the fuel is injected; determining a fuel amount difference corresponding to a difference value between the frequency analysis value and a reference frequency analysis value stored in a data storage in advance; and correcting a current value of the injector which is applied to inject the target fuel amount to remove the fuel amount difference. 1. A method of correcting a fuel injection amount , the method comprising:applying a current value for injecting a target fuel amount to an injector of a fuel pressure rail and injecting fuel, upon determining, by a controller, that a fuel amount correction driving condition that does not requires fuel injection is satisfied;detecting a pressure signal of a fuel rail pressure from which the fuel is injected, upon determining, by the controller, that the fuel is injected;determining, by the controller, a frequency analysis value of the detected pressure signal;determining, by the controller, a fuel amount difference corresponding to a difference value between the determined frequency analysis value and a reference frequency analysis value stored in a data storage in advance; andcorrecting, by the controller, the current value of the injector, the current value of the injector being applied to inject the target fuel amount to remove the fuel amount difference.2. The method of claim 1 ,wherein the current value for injecting the target fuel amount is applied to one of predetermined injectors of the fuel pressure rail, injecting fuel through a corresponding injector.3. The method of claim 1 , wherein the pressure signal is a signal which is detected by a pressure sensor mounted on the fuel pressure rail.4. The ...

An arrangement for protecting a high-pressure accumulator fuel injection system

A system for protecting a high-pressure accumulator fuel injection system of an internal combustion engine against excessively high fuel pressures occurring in a high-pressure accumulator of the fuel injection system caused by a malfunction in the fuel injection, wherein the system comprises a member measuring the fuel pressure inside the high-pressure accumulator and sending information about this pressure to a control unit. An electrically controllable inlet valve to a pumping element of a high-pressure pump is included in the system and controlled by the control unit to be transferred to a continuously open or closed state, if the pressure measured exceeds a predetermined pressure level for stopping the feeding of fuel by the pumping element to the high-pressure accumulator.

Self-contained electric-motor fuel pump with outlet pressure regulation

A fuel delivery system for an internal combustion engine that includes a fuel supply, an electric-motor pump for feeding fuel under pressure from the supply to an engine, and electronic control circuitry for applying electrical power to the pump. The control circuitry includes a pressure sensitive switch coupled to the pump and responsive to pump outlet pressure for switching between conductive and non-conductive switch conditions at a preselected pump outlet pressure. A pulse width modulation amplifier is coupled to the switch for applying pulsed d.c. energy to the pump at a first average voltage level when the pressure switch is in one condition, and at a second lesser but non-zero level when the pressure switch is in the other condition. In this way, electrical power is applied to the pump motor at a reduced level when pump outlet pressure exceeds the threshold level of the pressure switch.

Verfahren zur Regelung einer Brennkraftmaschine

Vorgeschlagen wird ein Verfahren zur Regelung einer Brennkraftmaschine (1) mit einem Common-Rail-Einspritzsystem und einem Hochdruck-Regelkreis. Bei diesem wird eine Pumpe mit Saugdrossel (3) von einem elektronischen Steuergerät (4) über ein PWM-Signal mit einer ersten Frequenz angesteuert. Die Erfindung sieht nun vor, dass aus dem Winkelabstand zweier Einspritzungen und der ersten Frequenz des PWM-Signals eine kritische Drehzahl berechnet wird. In Abhängigkeit der kritischen Drehzahl wird danach ein Drehzahlbereich festgelegt. Bei Motordrehzahl-Werten außerhalb dieses Drehzahlbereichs wird das PWM-Signal auf die erste Frequenz gesetzt. Bei Motordrehzahl-Werten innerhalb des Drehzahlbereichs wird das PWM-Signal auf eine zweite Frequenz gesetzt. Durch die Umschaltung des PWM-Signals werden die Druckschwingungen im Rail (6) verringert.

Method and device for controlling the rail pressure

Für ein Common-Railsystem wird ein Verfahren und eine Einrichtung zur Regelung des Raildrucks (pCR) vorgeschlagen, bei dem einem Raildruck-Regler (11) ein Strom-Regelkreis (14) zur Regelung des Saugdrossel-Stroms (i), welcher durch die Spule der Saugdrossel (4) fließt, nachgeordnet ist. Der Strom-Regelkreis (14) besitzt eine Vorsteuerung zur Berechnung eines Vorsteuerwerts und Filter im Rückkopplungszweig. For a common rail system, a method and a device for controlling the rail pressure (pCR) is proposed, in which a rail pressure regulator (11) a current control loop (14) for controlling the Saugdrosselstrom (i), which through the coil the suction throttle (4) flows downstream. The current control circuit (14) has a feedforward control for calculating a precontrol value and filters in the feedback branch.

Detection of fuel property based on change in rotational speed of engine

There is disclosed a fuel property detector for detecting a property of fuel injected by a fuel injector into a cylinder of an internal combustion engine. The fuel property detector includes an injection commander, a change detector, and a fuel property determiner. The injection commander commands the fuel injector to perform a fuel injection for fuel property detection into the cylinder of the engine. The change detector detects a change in the rotational speed of the engine which is caused by the fuel injection for fuel property detection. The fuel property determiner determines the property of the fuel based on the change in the rotational speed of the engine detected by the change detector.

用于带有共轨系统的内燃机的控制和调节方法

提出一种用于带有共轨系统的内燃机的控制和调节方法，在其中在正常操作中通过如下方法调节轨道压力，即，通过第一过滤器由轨道压力确定第一实际轨道压力，由理论轨道压力以及第一实际轨道压力计算调节偏差，通过压力调节器由调节偏差计算调整量并且依赖于该调整量确定带有第一PWM频率(f1)的PWM信号用于操控调节对象，在其中第二实际轨道压力(pCR2(IST))通过第二过滤器来确定，如果第二实际轨道压力(pCR2(IST))超过第一极限值(GW1)，则识别出卸载，在超出第一极限值(GW1)的情况下PWM信号从第一PWM频率(f1)转换到第二PWM频率(f2)上，并且在其中在超出第二极限值的情况下通过将PWM信号临时设置到相对正常操作提高了的PWM值上来控制轨道压力。

Fuel injection control device for internal combustion engine

Engine fuel injection method and apparatus

内燃機関の燃料噴射装置

Fuel pressure control device for internal combustion engine

Diagnosis for fuel system of internal combustion engine

직접 분사식 가솔린 엔진과 같은 내연 기관의 연료 시스템용 진단 시스템은 피드백 연료 압력 제어에서 목표 연료 압력에 대한 연료 압력 센서에 의해 검출된 실제 연료 압력의 압력 편차를 모니터링하고, 이에 의해 연료 시스템의 비정상을 검출한다. 압력 편차가 정상 범위를 계속해서 벗어날 때에는, 진단 제어기는 화학량론적 균질 연소 모드의 엔진 작동을 명령하고, 화학량론적 균질 연소 모드에서의 엔진 작동 중에 화학량론적 피드백 공연 제어의 피드백 보정량을 모니터링한다. 제어기는 공연비의 피드백 보정량이 상한값 또는 하한값에 고정되면 비정상이 연료 압력 센서에 기인하는 것으로 판정한다. Diagnostic systems for fuel systems of internal combustion engines, such as direct injection gasoline engines, monitor the pressure deviation of the actual fuel pressure detected by the fuel pressure sensor with respect to the target fuel pressure in feedback fuel pressure control, thereby detecting abnormalities in the fuel system. do. When the pressure deviation continues to deviate from the normal range, the diagnostic controller commands engine operation in stoichiometric homogeneous combustion mode and monitors the feedback correction amount of stoichiometric feedback performance control during engine operation in stoichiometric homogeneous combustion mode. The controller determines that the abnormality is due to the fuel pressure sensor when the feedback correction amount of the air-fuel ratio is fixed to the upper limit value or the lower limit value.

内燃机的燃料喷射控制装置和控制方法

内燃机具备向进气道喷射燃料的进气道喷射器和向燃烧室喷射燃料的直喷喷射器。控制器基于内燃机的运转条件使进气道喷射器和直喷喷射器喷射燃料。并且，通过在内燃机减速时使直喷喷射器的喷射量相比于通常时的直喷喷射器的喷射量增加，来迅速降低直喷喷射器的燃料压力。

Control method of pump of direct fuel injection (embodiments) and engine system

FIELD: machine building.SUBSTANCE: methods are proposed for control of electromagnetic bypass valve of direct injection fuel pump, in which voltage is supplied to electromagnetic bypass valve or supply voltage is stopped in compliance with certain conditions. Disclosed is an exemplary control strategy for operation of a direct injection fuel pump when fuel vapour is detected at the inlet of a fuel injection pump. To ensure the required pump efficiency and to provide the required amount of fuel supply to the nozzles by the pump at the required pressure, in the presence of fuel vapours it is possible to maintain the electromagnetic bypass valve of the pump in a state, when voltage is supplied to it, during minimum angular duration after position of upper dead point of piston in fuel pump of direct injection.EFFECT: invention can be used in fuel management systems for internal combustion engines.20 cl, 7 dwg РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 708 570 C2 (51) МПК F02D 1/02 (2006.01) F02D 41/38 (2006.01) F02M 59/02 (2006.01) F02M 59/46 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (52) СПК F02D 1/02 (2019.05); F02D 41/26 (2019.05); F02D 41/3082 (2019.05); F02D 41/38 (2019.05); F02D 41/3845 (2019.05); F02M 55/007 (2019.05); F02M 59/027 (2019.05); F02M 59/102 (2019.05); F02M 59/366 (2019.05); F02M 59/466 (2019.05); F02M 63/0225 (2019.05) (21)(22) Заявка: 2015151491, 02.12.2015 02.12.2015 (73) Патентообладатель(и): Форд Глобал Текнолоджиз, ЛЛК (US) Дата регистрации: (56) Список документов, цитированных в отчете о поиске: US 20100237266 A1, 23.09.2010. US 20120167859 A1, 05.07.2012. RU 2562341 C2, 10.09.2015. Приоритет(ы): (30) Конвенционный приоритет: 04.12.2014 US 14/560,497 (43) Дата публикации заявки: 07.06.2017 Бюл. № 16 2 7 0 8 5 7 0 R U Адрес для переписки: 197101, Санкт-Петербург, а/я 128, "АРСПАТЕНТ", М.В. Хмара (54) СПОСОБ УПРАВЛЕНИЯ НАСОСОМ НЕПОСРЕДСТВЕННОГО ВПРЫСКА ТОПЛИВА (ВАРИАНТЫ) И СИСТЕМА ДВИГАТЕЛЯ ( ...

Multicylinder engine

A multicylinder engine includes a plurality of intake ports, a plurality of in-cylinder injectors, and an electronic control unit. The electronic control unit is configured to initially set a value of a control parameter of the multicylinder engine, individually for each of the cylinders, such that there is a common regularity between a distribution among the cylinders, of a difference of the value of the control parameter of each of the cylinders from the value of the control parameter of a reference cylinder, and a distribution among the cylinders, of a difference of the distance of a narrowed portion of each of the cylinders from the distance of the narrowed portion of a reference cylinder. The control parameter is a parameter that determines an air-fuel ratio of an air-fuel mixture around an ignition plug at a time of ignition in stratified charge combustion operation.

Multi-cylinder engine

Mehrzylindermotor, gekennzeichnet durch:mehrere Einlasskanäle (10), die jeweils mit jedem der Zylinder des Mehrzylindermotors verbunden sind und eine Einschnürung (12) aufweisen, die einen Verengungsabschnitt (14) umfasst, so dass eine Tumble-Strömung in einem Brennraum eines jeden der Zylinder des Mehrzylindermotors erzeugt wird und eine Distanz zwischen dem Verengungsabschnitt (14) und einer Unterseite eines Zylinderkopfes (2) des Mehrzylindermotors zwischen den Zylindern des Mehrzylindermotors variiert;mehrere in den Zylindern angeordnete Injektoren (26), die jeweils in jedem der Zylinder des Mehrzylindermotors angeordnet sind, wobei jeder der in den Zylindern befindlichen Injektoren (26) dafür ausgebildet ist, einen Kraftstoff gegen die Tumble-Strömung in dem Brennraum einzuspritzen, so dass ein Verbrennungsvorgang mit stratifizierter Beladung mittels Kraftstoffeinspritzung durch den in dem Zylinder angeordneten Injektor (26) ausgeführt wird; undeine elektronische Steuereinheit (50), die dafür ausgebildet ist, einen Wert eines Steuerungsparameters des Mehrzylindermotors, für jeden der Zylinder individuell, anfänglich so einzustellen, dass es eine gemeinsame Regelmäßigkeit zwischen einer Verteilung zwischen den Zylindern einer Differenz des Wertes des Steuerungsparameters eines jeden der Zylinder von dem Wert des Steuerungsparameters eines Bezugszylinders, und einer Verteilung zwischen den Zylindern einer Differenz der Distanz des Verengungsabschnitts eines jeden der Zylinder von der Distanz des Verengungsabschnitts (14) des Bezugszylinders gibt, wobei der Steuerungsparameter ein Parameter ist, der ein Kraftstoff-Luft-Verhältnis eines Kraftstoff-Luft-Gemisches um eine Zündkerze herum zu einem Zündzeitpunkt in dem Verbrennungsvorgang mit stratifizierter Beladung des Mehrzylindermotors bestimmt. Multi-cylinder engine, characterized by: a plurality of inlet ducts (10) which are each connected to each of the cylinders of the multi-cylinder engine and have a ...

Control method and device of internal combustion engine

장애가 생긴 경우, 내연기관을 신속하게 차단할 수 있도록 구성된 내연기관의 제어 방법 및 장치에 관한 것이다. 고압 연료 분사 장치를 갖는 내연기관, 특히, 커먼레일 시스템을 갖는 내연기관의 제어 방법 및 장치에 있어서, 연료는 1개 이상의 펌프에 의해 저압 영역에서 고압 영역으로 이송되며, 고압 영역에서 압력이 검출되고, 압력 조정 밸브에 의해 조정되며, 장애가 검출된 경우, 압력 조정 밸브는 고압 영역 내의 압력이 저하하도록 제어할 수 있다. The present invention relates to a control method and apparatus for an internal combustion engine configured to quickly shut off an internal combustion engine when a failure occurs. In the control method and apparatus of an internal combustion engine having a high pressure fuel injection device, in particular an internal combustion engine having a common rail system, the fuel is transferred from the low pressure region to the high pressure region by one or more pumps, the pressure being detected in the high pressure region, The pressure regulating valve is adjusted by the pressure regulating valve, and when a failure is detected, the pressure regulating valve can control the pressure in the high pressure region to decrease.

연료량 조절 장치의 감시 방법 및 감시 장치(Monitor method and apparatus for uel anount adjustment system)

연료량 조절 장치, 예컨대 디젤 기관에 대한 커먼 레일 장치의 감시 방법 및 감시 장치가 기재되고 있는 충격파 센서의 출력 신호에 의거해서 고장이 식별된다.

Built-in electric fuel pump with outlet pressure adjustment function

Fuel pressure regulator having two chambers sepd. by flexible diaphragm

The fuel pressure regulator includes a housing, a diaphragm defining two chambers, a passage from the second chamber to the exterior of the housing, a fuel inlet and outlet to and from the first chamber. A valve seat, associated with the fuel outlet, has a circular seat surface for engagement with a complementary valve element, and a first spring in the second chamber urges the diaphragm axially toward the valve seat. A cage is carried by the diaphragm, and a valve element has an exterior surface complementary to and mating sealing with the valve seat. The valve element is carried by the cage and is axially movable by the diaphragm to a closed position received on the valve seat and to an open position spaced from the valve seat. An electrical switch having a first contact of an electrically conductive material fixedly disposed within the first chamber, and a second contact movable with the diaphragm and the cage, so that when the valve is closed the two contacts are in a conductive state. When the valve is open the contacts are non-conductive. A pulse width modulator applies pulsed DC energy to an electric motor of a fuel pump at a first frequency and duty cycle when the switch is conductive, and at a second non-zero frequency and/or non-zero duty cycle less than the first frequency and/or duty cycle when the switch is non-conductive, such that electrical power applied to the pump motor is reduced when pump outlet pressure applied to the regulator opens the switch.

FUEL DISTRIBUTION CIRCUIT FOR INTERNAL COMBUSTION ENGINE.

Returnless fuel system with demand fuel pressure regulator

A no-return fuel system for an automotive engine with fuel injectors. The system has an electric fuel pump received in a fuel tank and supplying fuel at a substantially constant pressure to a demand regulator which delivers fuel to the fuel injectors under varying engine operating conditions. The fuel is delivered to the demand regulator at a substantially constant pressure by varying the speed of the fuel pump in response to changing fuel demand of the engine and/or by by-passing some of the fuel supplied by the pump through a by-pass regulator or relief valve. The demand regulator has a housing with a flexible diaphragm between first and second chambers. The admission of fuel to the first chamber is controlled by a valve associated with the diaphragm and fuel from this chamber is supplied to the engine injectors. Under some operating conditions, the valve closes and if the fuel trapped between the valve and the injectors expands, the diaphragm is displaced to accommodate the expansion and accumulate the expanded fuel. If the pressure of the trapped fuel increases sufficiently to a predetermined maximum value, the valve opens to limit its maximum pressure to the predetermined value. In some applications, the second chamber communicates with the engine air intake manifold so that under normal operating conditions, fuel is supplied to the engine injectors with a substantially constant pressure drop across the injectors.

Fuel supply system for engines with fuel pressure control

In a fuel supply system of an internal combustion engine, an actual fuel pressure Pf is measured by a differential pressure sensor and the actual fuel pressure Pf is averaged in a different degree to determine two kinds of values Pfs and Pft. The value Pfs is used to control the fuel pressure, while the value Pft is used to correct a pulse width. Then, a correction value Vfpci is determined according to the load applied to the engine and used in a feedback control to adjust a fuel discharge pressure of a fuel pump.

Fuel supply for international combustion engine

In a fuel supply system employing a returnless fuel pipe arrangement, a relief valve is provided at a discharge side of a fuel pump. The relief valve is opened when fuel pressure in the fuel pipe arrangement becomes no less than a system protective pressure, so as to relieve the fuel pressure to protect the system. The relief valve is also arranged to be open when the fuel pressure in the fuel pipe arrangement becomes higher than a target fuel pressure by a predetermined value or when the fuel cut is performed. Thus, the fuel pressure in the fuel pipe arrangement is lowered. Thereafter, when the fuel pressure in the fuel pipe arrangement is lowered to a pressure near the target fuel pressure, the relief valve is arranged to be closed so that the fuel pressure in the fuel pipe arrangement is held substantially at the target fuel pressure.

Fuel supplying apparatus for internal combustion engine

An apparatus for supplying fuel to an internal combustion engine is disclosed. The apparatus includes an injector that is selectively opened and closed and a pump for discharging the fuel to the injector from a fuel reservoir. The injector is open to inject the fuel to the engine when the engine is running and closed when the engine is idling. The amount of fuel to be injected is adjusted based on the operating state of the engine. A pressure sensor detects an actual pressure of the fuel to be supplied to the injector. A controller computes a target pressure of the fuel to be supplied to the injector. The controller determines a presumed change of engine speed based on the operating state of the engine and controls the pump based on the presumed change.

Method and System for Adjusting Engine Fuel Rates by Adjusting Fuel Pressure

A fuel pump configured to provide a fuel to a fuel injector component at a first fuel pressure, and thereby to provide the fuel to the fuel injector component at a first fuel rate. A secondary fuel pump interposed between the fuel pump and the injector component is in circuit communication with a switch such that the secondary fuel pump increases or decreases the fuel pressure in response to an operation of the switch to provide the fuel to the fuel injector component at a modified second fuel pressure, which is greater than the first fuel pressure. The fuel is provided to the fuel injector component at a second fuel rate, which is 20%-30% greater than the first fuel rate.

Fuel delivery system and method of operation

A fuel delivery system for an engine. The fuel delivery system includes a fuel tank, at least one fuel injector, a fuel pump, a pressure sensor, a temperature sensor, and an engine control module. The fuel pump is configured to draw fuel from the fuel tank and provide the fuel to the at least one fuel injector. The pressure sensor is configured to sense a pressure of the fuel being provided to the at least one fuel injector. The temperature sensor is configured to sense a temperature of the engine. And the engine control module is configured to control the fuel pump based on the sensed pressure and the sensed temperature.

Fuel pump assembly with diverted flow

In at least some implementations, a fuel pump assembly includes a fuel pump having an inlet through which fuel enters the fuel pump and a first outlet from which pressurized fuel is discharged for delivery to an engine, and a second outlet through which some of the fuel discharged from the fuel pump is routed wherein that fuel is not delivered to the engine, wherein the second outlet has a flow area that permits a flow of fuel through the second outlet that is sufficient to reduce the maximum pressure of fuel downstream of the first outlet for delivery to an engine to between l/10th and l/25th of the output pressure of the fuel pump without flow through the second outlet.

Fuel supply system for internal combustion engines

Fuel delivery system with pressure-controlled electric pump

A fuel delivery system which includes a fuel pump and a dc motor, which are preferably contained within a unitary housing. A pressure-sensitive switch, which is either contained within the unitary pump/motor housing or as a separate structure, includes a movable contact positioned within a housing so as to form a first chamber for receiving fuel under pressure and a second chamber for venting to atmosphere. A spring urges the movable contact against a second contact for applying electrical power to the pump motor. When the pump output pressure exceeds the force exerted on the movable contact by the spring, electrical conduction between the switch contacts is broken and motor power is interrupted. Current to the pump motor is thus pulse-width modulated as a function of pump output pressure, fuel demand, and the adjustable force exerted by the pressure switch spring.

Pressure control for the fuel system of an internal combustion engine

A fuel system for an internal combustion engine wherein the fuel pressure is maintained within a desired predetermined range. An electric fuel pump supplies fuel at a pressure proportional to the electric power applied to the pump. Control circuitry compares a voltage signal corresponding to the fuel pressure within a predetermined voltage range corresponding to a predetermined fuel pressure range. When the voltage signal is below the predetermined voltage range, the electric power applied to the electric pump is increased; when the voltage signal is above the predetermined voltage range, the electric power applied to the electric pump is decreased. The control circuit may further increase or decrease the electric power at a predetermined rate.

Method and apparatus for supplying fuel to internal combustion engines

For supplying fuel from a fuel tank to an internal combustion engine by a fuel supply pump, a fuel delivery pressure of the fuel supply pump is regulated by a pressure regulating valve so as to maintain the difference between the fuel delivery pressure of the pump and an inner pressure of an intake manifold of the engine at a prescribed constant value, and the delivery volume of fuel from the pump is controlled in response to the fuel delivery pressure so as to minimize the amount of surplus fuel produced by the pressure regulating operation of the pressure regulating valve.

Brushless DC fuel pump responsive to pressure sensor

A self-contained brushless electric-motor fuel pump for internal combustion engine fuel delivery systems and like applications in accordance with the present invention comprises a housing having a fuel inlet and fuel outlet, and a brushless electric motor with a permanent magnet armature mounted for rotation within the housing and stator windings surrounding the armature within the housing. A pump mechanism is positioned between the fuel inlet and outlet, and is coupled to the armature for corotation with the armature within the housing to pump fuel under pressure from the inlet to the outlet. A pressure sensor is operatively coupled to the fuel outlet within the housing for providing an electrical pressure signal as a function of fuel pressure at the outlet. Pump motor control electronics within the housing includes circuitry for comparing the pressure signal from the pressure sensor to a pump drive reference signal, and providing an error signal as a function of a difference therebetween. Drive current is applied to the stator windings of the motor as a function of such error signal.

Intake manifold pressure compensation for the closed-loop pressure regulation of a fuel pump

The fuel supply system of an internal combustion engine delivers liquid fuel to electrically operated fuel injectors by means of an electric pump whose output pressure is regulated by control electronics which receives as feedback from a pressure sensor connected into a fuel delivery passage serving the injectors a signal representing the pressure differential between manifold absolute pressure (MAP) and absolute pumped fuel pressure. The pressure sensor has a movable wall that divides its interior into an intake manifold pressure sensing chamber space communicated to the engine intake manifold and a fuel pressure sensing chamber space communicated to the fuel delivery line to the injectors. A magnet is mounted on a central region of the movable wall to transmit a signal to a Hall-effect sensor mounted within the intake manifold pressure sensing chamber space. The feedback pressure signal is derived from the Hall-effect sensor sensing the position of the magnet, and hence that of the movable wall.

Pressure-responsive fuel delivery system

A fuel delivery system for an internal combustion engine that includes a fuel supply with a pump responsive to application of electrical power for supplying fuel under pressure. A fuel injector is coupled to the supply for controlled delivery of fuel from the supply to the engine. A check valve is positioned in the fuel line that connects the pump outlet to the injector to prevent reverse flow of fuel from the injector to the pump when the pump is shut down. A sensor is coupled to the fuel line between the check valve and the pump outlet for providing an electrical signal as a function of fuel pressure at the pump outlet, and electronic control circuitry applies electrical power to the pump as a function of such pressure signal. A fuel bypass is connected to the fuel line between the pump outlet and the check valve for providing an open but restricted fuel flow path from the pump outlet parallel to the fuel line, such that fuel continues to flow through the bypass and the pump continues operation even in the absence of fuel demand at the engine. In this way, the pump maintains a minimum level of operation so as to be able rapidly to accommodate increasing demand for fuel at the engine.

具有分流的燃料泵组件

在至少一些实施方式中，燃料泵组件包括燃料泵，燃料泵具有入口和第一出口，燃料通过入口进入燃料泵，加压燃料从第一出口排出以递送到发动机;以及第二出口，从燃料泵排出的燃料中的一些通过第二出口被导引，其中燃料不递送到发动机，其中第二出口具有流通面积，流通面积允许通过第二出口的燃料流量足以将递送到发动机的第一出口下游的燃料的最大压力降低到在不流经第二出口的情况下燃料泵的输出压力的1/10至1/25之间。

Fuel pump assembly with diverted flow

In at least some implementations, a fuel pump assembly includes a fuel pump having an inlet through which fuel enters the fuel pump and a first outlet from which pressurized fuel is discharged for delivery to an engine, and a second outlet through which some of the fuel discharged from the fuel pump is routed wherein that fuel is not delivered to the engine, wherein the second outlet has a flow area that permits a flow of fuel through the second outlet that is sufficient to reduce the maximum pressure of fuel downstream of the first outlet for delivery to an engine to between 1/10th and 1/25th of the output pressure of the fuel pump without flow through the second outlet.

具有分流的燃料泵组件

在至少一些实施方式中，燃料泵组件包括燃料泵，燃料泵具有入口和第一出口，燃料通过入口进入燃料泵，加压燃料从第一出口排出以递送到发动机;以及第二出口，从燃料泵排出的燃料中的一些通过第二出口被导引，其中燃料不递送到发动机，其中第二出口具有流通面积，流通面积允许通过第二出口的燃料流量足以将递送到发动机的第一出口下游的燃料的最大压力降低到在不流经第二出口的情况下燃料泵的输出压力的1/10至1/25之间。

Fuel distribution circuit for an internal combustion engine.

L'invention concerne un circuit de distribution de carburant destiné à un moteur à combustion interne. Elle se rapporte à un circuit de distribution de carburant qui comporte une pompe (12) à moteur électrique et un dispositif (22) transmettant de l'énergie électrique à la pompe. Il comprend un interrupteur (18) sensible à la pression de la pompe, et un dispositif (22) de modulation par impulsions de largeur variable, destiné à appliquer de l'énergie en courant continu pulsé à la pompe à une première fréquence et avec un premier coefficient d'utilisation lorsque la pression de la pompe est inférieure à la pression de seuil, et à une seconde fréquence et/ou un second coefficient d'utilisation lorsque la pression de sortie de la pompe est supérieure au seuil. Application aux moteurs à combustion interne. The invention relates to a fuel distribution system for an internal combustion engine. It relates to a fuel distribution circuit which comprises an electric motor pump (12) and a device (22) transmitting electric energy to the pump. It comprises a switch (18) sensitive to the pressure of the pump, and a device (22) for pulse modulation of variable width, for applying pulsed direct current energy to the pump at a first frequency and with a first duty cycle when the pump pressure is below the threshold pressure, and at a second frequency and / or a second duty cycle when the pump outlet pressure is above the threshold. Application to internal combustion engines.

Fuel delivery system with pressure-controlled electric pump

A fuel delivery system which includes a fuel pump (14) and a dc motor (16), which are preferably contained within a unitary housing (18). A pressure-sensitive switch (90), which is either contained within the unitary pump/motor housing (18) or as a separate structure, includes a movable contact (136) positioned within a housing so as to form a first chamber for receiving fuel under pressure and a second chamber (132) for venting to atmosphere. A spring (138) urges the movable contact (136) against a second contact (122) for applying electrical power to the pump motor (16). When the pump output pressure exceeds the force exerted on the movable contact (136) by the spring (138), electrical conduction between the switch contacts (122, 136) is broken and motor power is interrupted. Current to the pump motor (16) is thus pulse-width modulated as a function of pump output pressure, fuel demand, and the adjustable force exerted by the pressure switch spring (138).

Device and method of controlling injection fuel

FIELD: motors and pumps. SUBSTANCE: invention relates to the control of fuel injection for an internal combustion engine with spark ignition and fuel injection directly into the cylinder. Fuel injection control device is provided that controls a motor including a fuel injection valve configured to directly inject fuel into the cylinder, and a spark plug, configured to ignite, by means of a spark, an air-fuel mixture in the cylinder. When the injected fuel collides with the section in a given low-temperature state, the fuel is injected when the fuel injection condition changes in a predetermined operating mode so as to continuously prevent the fuel jet from colliding in an identical position. EFFECT: technical result consists in reducing the volume of fuel adhering to the surface of the piston head. 4 cl, 10 dwg РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 654 508 C1 (51) МПК F02D 41/34 (2006.01) F02D 41/06 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (52) СПК F02D 41/34 (2006.01); F02D 41/06 (2006.01); F02D 41/22 (2006.01) (21)(22) Заявка: 2017143398, 12.06.2015 (24) Дата начала отсчета срока действия патента: Дата регистрации: (73) Патентообладатель(и): НИССАН МОТОР КО., ЛТД. (JP) 21.05.2018 (56) Список документов, цитированных в отчете о поиске: JP 2009036102 A, 2009-02-19. WO 2014136935 A1, 2014-09-12. JP 2013068128 A, 2013-04-18. JP 2014137025 A, 2014-07-28. RU 2519272 С2, 2014-06-10. (45) Опубликовано: 21.05.2018 Бюл. № 15 (85) Дата начала рассмотрения заявки PCT на национальной фазе: 12.01.2018 (86) Заявка PCT: JP 2015/067033 (12.06.2015) 2 6 5 4 5 0 8 Приоритет(ы): (22) Дата подачи заявки: 12.06.2015 R U 12.06.2015 (72) Автор(ы): КОДАМА Такаеси (JP), ИНОУЕ Такао (JP), УТИДА Рио (JP) 2 6 5 4 5 0 8 R U WO 2016/199297 (15.12.2016) Адрес для переписки: 129090, Москва, ул. Б. Спасская, 25, стр. 3, ООО "Юридическая фирма Городисский и Партнеры" (54) УСТРОЙСТВО И СПОСОБ ДЛЯ УПРАВЛЕНИЯ ВПРЫСКОМ ТОПЛИВА (57) Реферат: ...

特に自動車の内燃機関のための燃料供給機構とその運転法

(57)【要約】 【解決手段】 燃料を高圧ポンプ６によって蓄圧器２内 へポンピングする形式の、特に自動車の内燃機関のため の燃料供給機構１の運転法において、内燃機関のエンジ ンブレーキ状態で高圧ポンプ６のポンプ出力を減少させ る。 【効果】 ポンプ出力の減少により熱の発生が軽減さ れ、ひいては燃料の加熱がわずかとなる。このことによ り、蒸気の気泡の形成の危険ひいては内燃機関のミスフ アイヤ又は不均一な回転の危険が削減される。

Device and method for internal combustion engine with direct injection of two fuel types

FIELD: engines and pumps. SUBSTANCE: device and method for an internal combustion engine (ICE) with direct fuel injection running on two types of fuel are proposed. A high pressure pump (10) is connected to ICE and guide-distributor for direct fuel injection. At least two fuel storages (21, 27) holding gasoline andcondensed gas are provided. The device provides switching from one fuel to another. Switching occurs by treating fuel from the high pressure pump (10) and from fuel supply line connected to it by a temporary accumulation of the fuel in a treatment unit (28). The treatment unit (28) is positioned for treating the high pressure pump (10), pushing the prevailing fuel in such a way and displacing it with new fuel. EFFECT: increased reliability of the fuel supply system when switching from condensed gas to liquid fuel injection. 26 cl, 4 dwg С 2 2625886 ко РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) РЦ (11) > зо& заза С2 > С ть (50) МПК [02р 19/06 (2006.01) Н02М 21/002 (2006.0Т) [Н02М 3700 (2006.0Т) Н02М 43/00 (2006.0Т) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (21)(22) Заявка: 2013126781, 03.03.2009 (24) Дата начала отсчета срока действия патента: 03.03.2009 Дата регистрации: 19.07.2017 Приоритет(ы): (30) Конвенционный приоритет: 03.03.2008 МГ, 2001345; 30.12.2008 МГ. 2002384 Номер и дата приоритета первоначальной заявки, из которой данная заявка выделена: 2010140420 03.03.2008 (43) Дата публикации заявки: 20.12.2014 Бюл. № 35 (45) Опубликовано: 19.07.2017 Бюл. № 20 Адрес для переписки: 129090, Москва, ул. Б. Спасская, 25, строение 3, ООО "Юридическая фирма Городисский и Партнеры" (72) Автор(ы): ЯСМА, Серватиус Альфонс Мария (МГ.), ВАН ЭЙК, Пит (МГ.) (73) Патентообладатель(и): ВИАЛЛЕ АЛТЕРНАТИВ ФЬЮЭЛ СИСТЕМЗ Б.В. (МТ.) (56) Список документов, цитированных в отчете о поиске: ОЕ 20101475 01, 13.06.2002. ЗЧ 1770598 АТ, 23.10.1992. ]Р 2002327658 А, 15.11.2002. ВО 2338920 С1, 20.11.2008. 0$ 6298833 В1, 09.10.2001. ВО 57832 91, 27.10. ...

一种高压共轨喷油压力控制方法和系统

本发明公开了一种高压共轨喷油压力控制方法和系统，以直流电机驱动的电动输油泵为执行元件，通过调节低压输出油量进行高压共轨喷油压力调节，其特征在于，通过采集发动机运行参数计算喷油压力设定值及电动输油泵的目标驱动PWM信号值，PWM信号占空比的控制逻辑随发动机运行工况模式的切换发生变化。本发明控制电动输油泵的供油量进行共轨喷射压力调节，避免发动机不必要的负载，提高发动机的能量转换效率，契合汽车执行器的智能化、集成化、模块化的发展趋势。这改变了传统的共轨喷油压力控制、标定模式，降低了对高压共轨喷油系统供应商的技术依赖，有助于提高发动机及柴油车制造商的自主设计、开发能力。

gaseous fuel direct injection system

불꽃점화 내연기관에 사용하기 위한 기체연료의 직접 연료분사시스템은 엔진의 적어도 몇 개의 작동점에서 연료분사기(9)에 공급하기 위한 기체연료를 위한 복수의 공존 가용 연료압력에 해당하는 복수의 용적부(13, 14)을 포함하는 연료공급수단(11)을 구비한다. 제어수단은 엔진작동상태들의 함수로서 연료 공급압력을 선택한다. 기체연료, 내연기관, 직접분사, 연료분사기, 연료공급통로. A direct fuel injection system of gaseous fuel for use in a spark ignition internal combustion engine comprises a plurality of volumes corresponding to a plurality of coexisting available fuel pressures for gaseous fuel for supply to the fuel injector 9 at at least several operating points of the engine. And fuel supply means (11) including (13, 14). The control means selects the fuel supply pressure as a function of engine operating states. Gas fuel, internal combustion engine, direct injection, fuel injector, fuel supply passage.

Method for determining at least one injection parameter of an internal combustion engine and internal combustion engine

本发明涉及一种用于确定内燃机(1)的至少一个喷射参数的方法，其具有以下步骤：至少在喷射期间时间分辨地检测在内燃机(1)的喷射系统(3)中的压力曲线；对于喷射系统(3)的至少一个运行点提供参考压力曲线；将所检测的压力曲线与参考压力曲线比较，并且根据该比较来测定至少一个喷射参数。