ДВИГАТЕЛЬ ВНУТРЕННЕГО СГОРАНИЯ, В ЧАСТНОСТИ ГАЗОВЫЙ ДВИГАТЕЛЬ, ДЛЯ ТРАНСПОРТНОГО СРЕДСТВА, В ЧАСТНОСТИ ДЛЯ АВТОМОБИЛЯ ПРОМЫШЛЕННОГО НАЗНАЧЕНИЯ

Изобретение может быть использовано в двигателях внутреннего сгорания (ДВС). Предложен ДВС с впускным трактом (25), посредством которого к блоку (11) сгорания, в частности к блоку цилиндр-поршень двигателя (1) внутреннего сгорания, может подводиться газ, в частности газовая смесь горючего газа/воздуха/отработавшего газа, и с рециркуляцией (2) отработавшего газа, посредством которой к газу, подводимому к блоку (11) сгорания в зоне (18) подмешивания отработавшего газа, может подводиться отработавший газ блока (11) сгорания. Во впускном тракте (25) выше по потоку от блока (11) сгорания и ниже по потоку от зоны (18) подмешивания отработавшего газа расположено по меньшей мере одно измерительное устройство (22, 27), посредством которого может определяться массовый поток газа, в частности массовый поток горючего газа/воздуха/отработавшего газа, и температура газа, в частности температура горючего газа/воздуха/отработавшего газа. В соответствии с изобретением, для определения возвращенного массового ...

ДВИГАТЕЛЬ ВНУТРЕННЕГО СГОРАНИЯ, В ЧАСТНОСТИ ГАЗОВЫЙ ДВИГАТЕЛЬ, ДЛЯ ТРАНСПОРТНОГО СРЕДСТВА, В ЧАСТНОСТИ ДЛЯ АВТОМОБИЛЯ ПРОМЫШЛЕННОГО НАЗНАЧЕНИЯ

Motorsteuerungssystem mit kraftstoffbasierter Zeitsteuerung

Es wird ein Steuerungssystem (125) für einen Motor (105) mit einem Zylinder (135) offenbart, wobei das Steuerungssystem ein zum Regeln einer Fluidströmung des Zylinders bewegliches Motorventil, und einen dem Motorventil zugeordneten Aktor (202) aufweist. Das Steuerungssystem weist auch einen zum Erzeugen eines eine im Inneren des Zylinders nach Beendigung eines ersten Verbrennungsereignis verbleibende Menge einer Luft/Kraftstoffmischung angebenden Signals ausgebildeten Sensor (272) und eine mit dem Aktor und dem Sensor in Verbindung stehende Steuerung (270) auf. Die Steuerung ist zum Vergleichen der Menge mit einer Sollmenge und zum wahlweisen Regeln des Aktors zum Anpassen einer einem nachfolgenden Verbrennungsereignis zugeordneten Zeitsteuerung des Motorventils basierend auf dem Vergleich ausgebildet.

Verfahren zum Betreiben einer mit einem gasförmigen Kraftstoff betreibbaren Verbrennungskraftmaschine

Die Erfindung betrifft ein Verfahren zum Betreiben einer mit einem gasförmigen Kraftstoff betreibbaren und wenigstens einen Brennraum (14) aufweisenden Verbrennungskraftmaschine (10), insbesondere für einen Kraftwagen, bei welchem der gasförmige Kraftstoff mittels eines Einbringelements (26) direkt in den Brennraum (14) eingebracht wird, wobei während eines jeweiligen Arbeitsspiels der Verbrennungskraftmaschine (10) eine Mehrzahl von aufeinanderfolgenden Einbringungsvorgängen durchgeführt wird, mittels welchen der Kraftstoff direkt in den Brennraum (14) eingebracht wird.

Verfahren zum Betrieb eines Gasmotors

Ölversorgungskreislauf-Vorrichtung für ein Zylinder-Deaktivierungssystem

Ölversorgungskreislauf-Vorrichtung für ein Zylinder-Deaktivierungssystem mit einer einfachen Bauweise und geeignet, an einem Zylinderkopf ohne den Bedarf zusätzlicher, außerordentlicher Teile installiert zu werden, in dem eine Ölleitung in einem hohlen Raum einer Nockenwelle gebildet wird, aufweisend: eine Hydraulikpumpe (240); eine Mehrzahl von Ventilstößeln (130) zur Steuerung der Öffnung von Einlass- und Auslassventilen; einen ersten Öl-Kreislauf (280), der mit der Hydraulikpumpe (240) über eine Ölversorgungs-Leitung in Verbindung steht und der Öl hohen Druckes in die Ventilstößel (130) zuführt; und einen zweiten Öl-Kreislauf (270), der mit der Hydraulikpumpe (240) in Verbindung steht und der Öl an die Ventilstößel (130) zuführt, wobei der zweite Öl-Kreislauf (270) eine in einem hohlen Raum einer Nockenwelle gebildet ist.

Flow metering

Staggered intake valve opening with bufurcated port to eliminate hydrogen intake backfire

Gas engine power generating system

... [Objective] To enable maintenance and management to be performed easily, to enable electric power to be supplied efficiently with low fuel consumption, in accordance with the demand for electric power, and to supply a large amount of electric power by linking multiple units together. [Configuration] [Claim 1] This gas engine power generating system is provided with an electricity generating component comprising a gas engine 2, an alternating-current electricity generator 51, a cooling system portion 55, an exhaust system portion 4, an engine control unit 61, a battery 53, and an alternating current/direct current inverter 52, and a housing 1, wherein a plurality of the electricity generating components are provided as electricity generating units A, and are accommodated in the housing 1. Each electricity generating unit A is configured to be capable of generating electricity independently, the plurality of electricity generating units A are electrically connected together in parallel, operation ...

Method and control device for operating a gas engine

Verfahren zum Betreiben eines Gasmotors (10) mit einem Abgaskatalysator (13) und mit einer Abgasrückführung (12), wobei der Gasmotor (10) Zylinder (11) aufweist, die eine Hauptbrennkammer (14) und eine Vorbrennkammer (15) aufweisen, wobei die Zylinder (11) verlassendes Abgas (23) über den Abgaskatalysator (13) leitbar ist, und wobei ein Teil des die Zylinder verlassenden Abgases (23) über die Abgasrückführung (12) in Richtung auf die Zylinder (11) führbar ist. In einer ersten Betriebsstrategie wird der Gasmotor (10) derart betrieben, dass über die Abgasrückführung (12) geleitetes Abgas (23) in Richtung auf die Hauptbrennkammern (14) der Zylinder geführt wird, sodass das den Hauptbrennkammern zuzuführende Gas/Luft-Gemisch (18) Abgas enthält; dass über die Abgasrückführung geleitetes Abgas (23) nicht in Richtung auf die Vorbrennkammern (15) der Zylinder geführt wird, sodass das den Vorbrennkammern zuzuführende Gas/Luft-Gemisch (19) kein Abgas enthält; dass der Gasanteil des den Hauptbrennkammern ...

Method and control device for operating a gas engine

Verfahren zum Betreiben eines Gasmotors (10) mit einem Abgaskatalysator (13) und mit einer Abgasrückführung (12), wobei der Gasmotor (10) Zylinder (11) aufweist, die eine Hauptbrennkammer (14) und eine Vorbrennkammer (15) aufweisen, wobei die Zylinder (11) verlassendes Abgas (23) über den Abgaskatalysator (13) leitbar ist, und wobei ein Teil des die Zylinder verlassenden Abgases (23) über die Abgasrückführung (12) in Richtung auf die Zylinder (11) führbar ist. In einer ersten Betriebsstrategie wird der Gasmotor (10) derart betrieben wird, dass über die Abgasrückführung (12) geleitetes Abgas (23) in Richtung auf die Hauptbrennkammern (14) der Zylinder geführt wird, sodass das den Hauptbrennkammern zuzuführende Gas/LuftGemisch (18) Abgas enthält; dass über die Abgasrückführung geleitetes Abgas (23) nicht in Richtung auf die Vorbrennkammern (15) der Zylinder geführt wird, sodass das den Vorbrennkammern zuzuführende Gas/Luft-Gemisch (19) kein Abgas enthält; dass der Gasanteil des den Hauptbrennkammern ...

Method and control device for operating a gas engine

Verfahren zum Betreiben eines Gasmotors (10), der mehrere Zylinder (12) umfasst, wobei jeder Zylinder (12) eine Brennkammer (24) und einen in der Brennkammer (24) geführten Kolben (13) aufweist, der über eine Pleuelstange (14) an einer Kurbelwelle (15) des Gasmotors angreift, wobei zylinderindividuell ein Brennkammerdruck in der jeweiligen Brennkammer (24) der Zylinder (12) messtechnisch erfasst wird, wobei ein Drehmoment an der Kurbelwelle (15) erfasst wird, und wobei die zylinderindividuellen Brennkammerdrücke und das Drehmoment zur Erfassung von Zündaussetzern an den Zylindern (12) derart gemeinsam ausgewertet werden, dass dann, wenn sowohl an mindestens einem Zylinder (12) ein zu geringer Brennkammerdruck als auch an der Kurbelwelle (15) eine zu geringes Drehmoment erfasst werden, auf Zündaussetzer an mindestens einem Zylinder (12) geschlossen wird.

ENGINE, DEVICE AND PROCEDURE FOR THE CONTROLLING OF THE ENGINE EXHAUST GAS TEMPERATURE

Verfahren zum Betreiben einer funkengezündeten Brennkraftmaschine

A method for operating a spark ignited engine, including forming a combustible mixture by mixing generally homogeneously a first fuel and air and introducing this mixture into the at least one cylinder in an intake stroke, and compressing the combustible mixture with a piston in a compression stroke thereby introducing a part of the combustible mixture into a pre-chamber. During the intake and/or the compression stroke, a second fuel is introduced into the pre-chamber at an introduction-time before start of combustion, and the second fuel is of the same or different chemical composition and/or concentration with respect to the first fuel, and a spark ignites in the prechamber. An amount of second fuel and/or the chemical composition of second fuel introduced to the pre-chamber and/or spark timing of the pre-chamber and/or an in-cylinder charge temperature is chosen such that a desired duration of combustion can be achieved.

Vorkammergasregelstrecke für eine Brennkraftmaschine

Vorkammergasregelstrecke (1) für eine Brennkraftmaschine (2) mit wenigstens einem Brennraum (3) und wenigstens einer, mit dem wenigstens einen Brennraum (3) verbundenen Vorkammer (4), wobei der wenigstens eine Brennraum (3) über eine Ansaugleitung (5) mit Treibgas versorgbar ist und die wenigstens eine Vorkammer (4) über eine Vorkammergasleitung (6) mit Treibgas versorgbar ist, wobei die Vorkammergasregelstrecke (1) umfasst: - wenigstens ein Gasregelorgan (7) zur Zumessung der der Vorkammer (4) über die Vorkammergasleitung (6) zuführbaren Menge an Treibgas, - wenigstens eine Steuerleitung (8), welche das Gasregelorgan (7) mit einer Ansaugleitung (5) der Brennkraftmaschine (2) verbindet, wobei mit der Steuerleitung (8) wenigstens eine Zweigleitung (10) verbunden ist, wobei die Länge (L) der wenigstens einen Zweigleitung (10) ein Viertel der Wellenlänge der Grundschwingung oder einer vorgegebenen Oberschwingung einer Druckschwingung in der Ansaugleitung (5) bei einer vorgegebenen Drehzahl ...

Method and control device for determining a gas consumption a gas fired engine

Verfahren zur Bestimmung eines Gasverbrauchs eines mit Gas betriebenen Motors (10), nämlich eines mit Gas betriebenen Gasmotors oder eines mit Gas betriebenen Dual-Fuel-Motors, wobei der Motor (10) unter Ist-Betriebsbedingungen betrieben wird und unter den Ist-Betriebsbedingungen der Ist-Gasverbrauch des Motors (10) erfasst wird, und wobei ein unter Ziel-Betriebsbedingungen zur erwartender Ziel-Gasverbrauch des Motors (10) abhängig von dem Ist-Gasverbrauch und abgängig von Abweichungen zwischen den Ist-Betriebsbedingungen und den Ziel-Betriebsbedingungen berechnet wird.

Verfahren zum Betreiben einer funkengezündeten Brennkraftmaschine

Verfahren zum Betreiben einer funkengezündeten Brennkraftmaschine mit wenigstens einem Zylinder und einem in dem wenigstens einen Zylinder bewegbaren Kolben und wenigstens einer, mit dem wenigstens einen Zylinder verbundenen Vorkammer, wobei das Verfahren die Schritte umfasst: • Bilden eines zündfähigen Gemisches durch weitestgehend homogenes Mischen eines ersten Kraftstoffes und Luft und Einführen dieser Mischung in den wenigstens einen Zylinder, • Verdichten des zündfähigen Gemisches mit dem Kolben in einem Verdichtungstakt, Einführen eines zweiten Kraftstoffes in die Vorkammer zu einem Einführungszeitpunkt vor Beginn der Verbrennung, dadurch Schaffen einer Vorkammerladung, wobei der zweite Kraftstoff die gleiche oder eine verschiedene chemische Zusammensetzung und/oder Konzentration bezüglich des ersten Kraftstoffes aufweist, • Funkenzünden der Vorkammerladung, wobei die Emission des wenigstens einen Zylinders und/oder die durch die Verbrennung verursachte Spannung auf den wenigstens ...

Verfahren zum Betreiben einer funkengezündeten Brennkraftmaschine

A method includes forming a combustible mixture by mixing generally homogeneously a first fuel and air and introducing this mixture into a cylinder, compressing the combustible mixture with a piston in a compression stroke, introducing a second fuel into a prechamber at an introduction-time before start of combustion thus creating a prechamber charge, in which the second fuel being of the same or different chemical composition and/or concentration with respect to the first fuel, and spark igniting the prechamber charge. Emission of the cylinder and/or mechanical stress of the cylinder caused by the combustion are monitored. If emissions and/or mechanical stress are above respective predetermined thresholds, individually for the at least one cylinder, the chemical composition and/or the amount of second fuel introduced into the prechamber, and/or temperature of the cylinder charge and/or spark timing , are changed.

Brennkraftmaschine

Brennkraftmaschine, mit einem Zylinderkopf (1) und wenigstens einer Kolben-Zylinder- Einheit, in welcher in einem Zylinder (2) ein Kolben (3) zwischen einer unteren und einer oberen Totpunktlage bewegbar ist, wobei im Zylinder (2) durch den Kolben (3) und den Zylinderkopf (16) ein Hauptbrennraum (12) ausgebildet ist, der mit einer Vorkammer (4) in Verbindung steht, die ein Vorkammergasventil (5) aufweist und wobei Ein- und Auslassventile (6, 7) des Hauptbrennraums (12) durch einen Aktuator (8) betätigt sind, wobei das Vorkammergasventil (5) mit einer Quelle für ein Gas-Luft-Gemisch verbunden ist und die Vorkammerladung aus einem Gas-Luft-Gemisch mit einem Lambda größer als 1 ,2, bevorzugt größer als 1,5, besonders bevorzugt größer als 1,7 besteht und dass der Aktuator (8) derart konfiguriert ist, dass das Einlassventil (6) schließt, bevor der Kolben (3) die untere Totpunktlage erreicht, wobei der Kolben (3) als Flachkolben ausgeführt ist.

Verfahren zur Regelung einer Brennkraftmaschine

Verfahren zur Regelung einer Brennkraftmaschine (1), wobei bei einer mit einer Vorkammer (2) versehenen Kolben-Zylinder-Einheit (3) die der Vorkammer (2) zugeführte Menge an Treibgas an eine Verstellung der Betätigungscharakteristik eines Einlass- und/oder Auslassventils (4, 5) der Kolben-Zylinder-Einheit (3) angepasst wird.

Gas engine and method for operating same

Gasmotor (10), mit mindestens einem Zylinder (11), wobei der oder jede Zylinder (11) eine Hauptbrennkammer (12) zur Verbrennung eines Brenngas-Luft-Gemischs und eine mit der Hauptbrennkammer (12) über einen Überströmkanal (14 ) gekoppelte, gespülte Vorkammer (13) umfasst, und mit mindestens einem Abgasturbolader (15), der eine Turbine (16) zur Entspannung von den oder jeden Zylinder (11) verlassendem Abgas und einen Verdichter (18, 22) zur Verdichtung von dem oder jedem Zylinder (11) zuzuführender Luft umfasst, und mit mehrere Luftpfaden für die dem oder jedem Zylinder (11)zuzuführende Luft, wobei über einen ersten Luftpfad (17) mit einem ersten Verdichter (18) zumindest Luft verdichtbar und der Hauptbrennkammer (12) des oder jedes Zylinders (11) zuführbar ist, und wobei über einen zweiten Luftpfad (21) mit einem zweiten Verdichter (22) ein Brenngas-Luft-Gemisch verdichtbar und der Vorkammer (13) des oder jedes Zylinders (11) zuführbar ist.

Druckregler

Die Erfindung betrifft einen Druckregler, insbesondere elektronischer Druckregler, insbesondere für Erdgas getriebene Fahrzeuge, umfassend einen zwischen der Hochdruckseite und der Niederdruckseite angeordneten Kolben (1) in dem ein Medium von der Hochdruckseite (5) zur Niederdruckseite (6) strömt. Erfindungsgemäß ist vorgesehen, dass im Kolben (1) ein Strömungsglätter (2) zum Glätten der Strömung angeordnet ist, wobei der Strömungsglätter (2) ein System von Kanälen aufweist, wobei das System von Kanälen zumindest einen durchgehenden Kanal ausbildet der den Strömungsglätter (2) vollständig durchsetzt und die Hochdruckseite (5) des Druckreglers (10) mit der Niederdruckseite (6) strömungstechnisch verbindet.

Leak detection in a hydrogen fuelled vehicle

The invention concerns a method of detecting hydrogen leakage from a power plant installation using hydrogen as fuel. A rate of supply of hydrogen to the power plant ("the supply rate") is determined. A rate of change of mass of hydrogen in the tank arrangement ("the rate of mass change") is determined. The supply rate is compared with the rate of mass change to determine whether leakage is taking place.

Control Circuit for Injectors Having Cut Solenoids for LPI Engines and Cut Solenoid Control Method and Diagnostic Method Thereof

Fuel Supply System of LPI Engine and Method for Forcibly Returning Fuel Thereby

Hydrogen Fuelled Hybrid Powertrain and Vehicle

A hydrogen-powered hybrid powertrain system (100, 200, 300, 500, 1000) includes a hydrogen-fuelled internal combustion engine (114, 202, 302, 400, 902) operating at a lean air/fuel mixture, and a supercharger (436) for boosting a 5 primary drive torque produced by the engine primarily over a high operating speed range. An electric motor/generator (232, 314, 905) generates a secondary drive torque for the vehicle, such that the secondary drive torque complements the boosted primary drive torque over at least a low operating speed range of the powertrain. A disconnect clutch (312, 510) disposed between the engine and the 10 motor/generator engages and disengages the engine from the motor/generator, and serves to transfer the boosted primary driver torque through the motor/generator and to a power transmission system (116, 316, 550). The input at the power transmission is thus a combination of the boosted primary drive torque and the secondary drive torque and the secondary drive torque having ...

PORTABLE GAS POWERED INTERNAL COMBUSTION ENGINE ARRANGEMENT

An internal combustion engine driven device which for purposes of describing this embodiment may be an electrical energy generator. The internal combustion engine may be a four stroke, two stroke with appropriate oil injection, single cylinder air or liquid cooled engine, though larger types of engines may be utilized as desired for particular applications. The internal combustion engine may have an inertial or pull type starter to initiate operation thereof and such engines are readily available. In accordance with the principals of the present invention a mounting plate is adjacent the engine and is coupled thereto in any suitable location such as to the crankcase or other portion of the internal combustion engine so that the mounting plate receives both heat from the internal combustion engine and is vibrated by the vibration of the engine.

BI-FUEL ENGINE WITH INCREASED POWER

A device, system and method for operating a bi-fuel engine using either a first or second fuel, or a mix fuel comprising said first sucha as gasoline and second fuel such as hydrogen, comprising a processor (102), a fuel intake assembly (126, 128) controlled by the processor (102) and mounted onto the engine (134); an air pump (144, 146, 148) coupled to the engine (134) and controlled by the processor (102) to operate the engine (134) using the second fuel or the mix fuel preferably in a lean mode and in a charged mode using quality control., such that, when operated with hydrogen, which typically leads to a reduction of engine output power, the engine (134) is preferably operated in a charged mode and in a lean mode with the engine throttle (130) kept in a wide open position during charged and lean mode operation resulting in a more efficient engine with a reduction of engine output power loss.

Ignition device for gas engine and gas engine

The invention relates to a coal gas engine, especially an ignition device for a spark ignition gas engine and the gas engine. The ignition device is used for igniting gaseous fuel-air mixture; the ignition device (11) comprises a heating device (12) for the igniting source; the containing device (13) of the sleeve and the igniting gaseous fuel-air mixture is separated from the to-be ignited fuel-air mixture; the heating device (12) heats the contact section (14) of the to-be ignited fuel-air mixture for the corresponding containing device (13), so that the section of the containing device has the necessary temperature of the fuel-air mixture. The heating device (12) of the invention comprises at least one organization (17) for stabilizing the to-be ignited gaseous fuel-air mixture.

A METHOD FOR OPERATING A LARGE ENGINE AND A LARGE ENGINE

FUEL GAS SUPPLY SYSTEM IN SHIP

A fuel gas supply system in a ship is disclosed. According to an embodiment of the present invention, the fuel gas supply system in a ship comprises: a storage tank accommodating liquefied gas and boil-off gas of the liquefied gas; a fuel gas supply line having a compression unit pressurizing the boil-off gas of the storage tank, and supplying the boil-off gas pressurized by the compression unit to a first consumption means; and a re-liquefaction line supplied with a portion of the pressurized boil-off gas to be re-liquefied. The re-liquefaction line comprises: a cooling unit cooling a portion of the pressurized boil-off gas; a decompression unit decompressing the boil-off gas cooled by the cooling unit; and an oil removing unit supplied with a liquid component of the boil-off gas decompressed by the decompression unit to remove oil contained in the liquid component. COPYRIGHT KIPO 2017 ...

부실식 가스 엔진의 연료 공급 제어 장치

... 연료 공급 제어 장치(100)는, 가스 연료를 부실(24)에 공급하는 부실 연료 공급 밸브(18)와, 부실 연료 공급 밸브(18) 및 부실(24) 사이에 개재되며, 부실(24)로부터의 역류를 방지하는 체크 밸브(19)와, 체크 밸브(19)의 작동 상태를 검출하는 밸브 상태 검출 장치(51)와, 엔진 사이클 내에서의 회전각도를 검출하는 회전각도 검출 장치(56)와, 부실 연료 공급 밸브(18)의 작동 지령값을 결정하는 제어 장치(60)를 포함한다. 제어 장치(60)는, 밸브 상태 검출 장치(51) 및 회전각도 검출 장치(56)로부터의 신호에 기초하여 체크 밸브(19)의 실제 작동 상태를 회전각도와 대응시켜 측정하고, 해당 측정된 실제 작동 상태를 목표 작동 상태에 근접하도록 부실 연료 공급 밸브(18)의 작동 지령값을 보정한다.

GAS ENGINE

Provided is a gas engine that performs air-fuel ratio control in accordance with compositional changes in fuel gas. This gas engine (1) is equipped with an A/F valve (22) and a solenoid valve (21), is configured in a manner so as to perform perturbation by means of the solenoid valve (21), is provided with a control unit (10) that performs perturbation by means of the solenoid valve (21) by varying the solenoid valve (21) to the lean side and the rich side from a predetermined aperture in the state of the A/F valve (22) being opened to a predetermined aperture during specific engine operating conditions resulting from a baseline fuel gas, the control unit (10) adjusts the aperture of the A/F valve (22) in a manner so that, in the case that the output average value (b) obtained from a pre oxygen sensor (31) provided to an exhaust pathway (13) of the gas engine (1) during actual operation in a period during which the operating state of the gas engine (1) is considered to be uniform deviates ...

Systems and methods for in-cylinder pressure estimation using pressure wave modeling

A method for estimating pressures at a gas engine using a real-time model-based observer is implemented by a pressure estimation computing device. The method includes receiving a design schema describing an intake manifold and a plurality of components associated with the gas engine, segmenting the design schema into a plurality of segments defining a plurality of sections of the gas engine, defining a fluid dynamics model associated with each of the plurality of segments, defining a plurality of interconnected elements based on the plurality of fluid dynamics models, receiving at least one pressure measurement from at least one of a plurality of sensors associated with each of the sections of the gas engine, estimating a plurality of pressure values at each section of the gas engine, and controlling fuel injection to at least one gas cylinder based on the estimated plurality of pressure values.

Micro-pilot injection ignition type gas engine

What is disclosed is a micro-pilot injection ignition type gas engine, whereby an air fuel ratio control in starting the engine is executed with enhanced precision, by means of introducing skip-firing intermittent operations which reflect the engine operation conditions, while an idling time span can be shortened or omitted. The engine includes: a gas valve that opens and closes a fuel-gas passage in front of each cylinder, so as to arbitrarily control the throat area as well as the opening-closing time span of the gas valve; an engine speed detecting unit to detect the engine speed; a combustion diagnosis unit to detect an engine combustion state through a cylinder pressure distribution along elapsed time, as to each cylinder; an opening-closing control unit as to the gas valve, so as to control the intermittent opening-closing of the gas valve according to the levels of the detected engine speed as well as the cylinder pressure distribution; whereby, in starting the engine, the intermittent ...

Control of an engine-driven generator to address transients of an electrical power grid connected thereto

A technique for providing electric power to an electric power utility grid includes driving an electric power alternator coupled to the grid with a spark-ignited or direct injection internal combustion engine; detecting a change in electrical loading of the alternator; in response to the change, adjusting parameters of the engine and/or generator to adjust power provided by the engine. In one further forms of this technique, the adjusting of parameters for the engine includes retarding spark timing and/or interrupting the spark ignition; reducing or retarding direct injection timing or fuel amount and/or interrupting the direct injection; and/or the adjusting of parameters for the generator including increasing the field of the alternator or adding an electrical load.

СПОСОБ КОНТРОЛЯ СОСТОЯНИЯ БАЛЛОНОВ НА АВТОТРАНСПОРТЕ, РАБОТАЮЩЕМ НА КПГ И ВОДОРОДЕ

Изобретение относится к способу контроля состояния баллонов на транспорте, работающем на компримированном природном газе или водороде. Технический результат - обеспечение качественного контроля состояния (открыт/закрыт) баллонов в автотранспорте, работающем на компримированном природном газе или водороде. Посредством контроллера на непрерывной основе осуществляют опрос датчиков температуры, установленных на каждом баллоне, и датчика давления, установленного в магистрали системы газобаллонного оборудования. Посредством контроллера осуществляют передачу значения температуры каждого баллона в систему мониторинга через терминал мониторинга, причем заранее предустановлено, что при заправке наблюдается увеличение давления и температуры газа в баллонах, а при сливе наблюдается снижение давления и температуры газа в баллонах. Осуществляют анализ равномерности изменения температуры всех баллонов, и определение потенциально закрытого баллона на основании разницы температурных профилей, и дальнейшую ...

ДВУХЭТАПНЫЙ ДОЗИРУЮЩИЙ СОЛЕНОИД ДЛЯ ТОПЛИВНОГО РАСПЫЛИТЕЛЯ

... 1. Дозирующая система для топливного распылителя, содержащаякорпус, имеющий смесительную камеру;первый дозирующий элемент, размещенный в корпусе и приводимый в действие для управления потоком окислителя в смесительную камеру;второй дозирующий элемент, размещенный в корпусе и расположенный соосно с и проходящий через первый дозирующий элемент, при этом второй дозирующий элемент является приводимым в действие для управления потоком топлива в смесительную камеру;по меньшей мере, один соленоид, выполненный таким образом, чтобы приводить в действие, по меньшей мере, один из первого и второго дозирующих элементов.2. Топливный распылитель по п. 1, в котором, по меньшей мере, один соленоид приводит в действие первый дозирующий элемент, и приведение в действие первого дозирующего элемента приводит в действие второй дозирующий элемент.3. Топливный распылитель по п. 1, в котором первый дозирующий элемент перемещается из закрытого положения в открытое положение до перемещения второго дозирующего элемента ...

VERBRENNUNGSMOTORSYSTEM MIT WASSERSTOFFERZEUGUNGSFÄHIGKEIT

Verfahren zum Betreiben eines Verbrennungsmotors

Es werden ein Verfahren und eine Anordnung zum Betreiben eines Verbrennungsmotors vorgestellt. Bei dem Verfahren gibt ein Regler (12) als Stellgröße (22) eine Ventilsteuerzeit für jeden Zylinder vor, wobei die Ventilsteuerzeit jedes Zylinders durch einen Vorsteuerwert angepasst wird.

Verfahren und Steuerungseinrichtung zur Bestimmung eines Gasverbrauchs eines mit Gas betriebenen Motors

Verfahren zur Bestimmung eines Gasverbrauchs eines mit Gas betriebenen Motors (10), nämlich eines mit Gas betriebenen Gasmotors oder eines mit Gas betriebenen Dual-Fuel-Motors, wobei der Motor (10) unter Ist-Betriebsbedingungen betrieben wird und unter den Ist-Betriebsbedingungen der Ist-Gasverbrauch des Motors (10) erfasst wird, und wobei ein unter Ziel-Betriebsbedingungen zur erwartender Ziel-Gasverbrauch des Motors (10) abhängig von dem Ist-Gasverbrauch und abgängig von Abweichungen zwischen den Ist-Betriebsbedingungen und den Ziel-Betriebsbedingungen berechnet wird.

FUEL METERING

Computer system and method for monitoring hydrogen vehicles

A system and method for remotely monitoring the status of a hydrogen vehicle includes a data acquisition/communication module configured to receive a plurality of signals representing one or more status conditions associated with the vehicle. The data acquisition/ communication module is further configured to report one or more of the status conditions to a computer remote from the vehicle. The system is further configured to receive one or more signals from the remote computer in response to the reported status condition wherein the received signal represents an action to be taken in response to the one or more status conditions. The data acquisition/communication module is also configured to initiate the action to be taken. A computer remote from the vehicle is configured to monitor the one or more status conditions reported by the data acquisition/communication module and determine if an action must be taken.

Engine system for a vehicle

An engine system 10 for a vehicle, comprising an internal combustion engine 12, an intake system 14 configured to deliver air to combustion chambers of the engine and an exhaust gas recirculation (EGR) system 32 configured to direct a portion of exhaust gas expelled from the engine to the intake system. The system further comprises a water injection system comprising first and second injection points 40, 42 configured to inject water at respective spaced locations into air flowing through the intake system. The first injection point may be disposed upstream of an intercooler 30 of the intake system and preferably downstream of an exhaust-driven turbocharger 24. The second injection point may be disposed downstream of the intercooler of the intake system and preferably disposed downstream of a throttle 38 of EGR system. The injection points may be operable independently of each other. A vehicle, method or reducing Nitrous Oxide (NOx) emissions and controller are also claimed.

COMBUSTION ENGINE SYSTEM WITH HYDROGEN PRODUCTIVE CAPACITY

VERBRENNUNGSMOTOR

Vorkammergasregelstrecke für eine Brennkraftmaschine

Vorkammergasregelstrecke (1) für eine Brennkraftmaschine (2) mit wenigstens einem Brennraum (3) und wenigstens einer, mit dem wenigstens einen Brennraum (3) verbundenen Vorkammer (4), wobei der wenigstens eine Brennraum (3) über eine Ansaugleitung (5) mit Treibgas versorgbar ist und die wenigstens eine Vorkammer (4) über eine Vorkammergasleitung (6) mit Treibgas versorgbar ist, wobei die Vorkammergasregelstrecke (1) umfasst: wenigstens ein Gasregelorgan (7) zur Zumessung der der Vorkammer (4) über die Vorkammergasleitung (6) zuführbaren Menge an Treibgas, wenigstens eine Steuerleitung (8), welche das Gasregelorgan (7) mit einer Ansaugleitung (9) der Brennkraftmaschine (2) verbindet, wobei mit der Steuerleitung (8) wenigstens eine Zweigleitung (1 0) verbunden ist, wobei die Länge (L) der wenigstens einen Zweigleitung (1 0) ein Viertel der Wellenlänge der Grundschwingung oder einer vorgegebenen Oberschwingung einer Druckschwingung in der Ansaugleitung (5) bei einer vorgegebenen Drehzahl der ...

Internal combustion engine and method for starting an internal combustion engine

Brennkraftmaschine (1) mit zumindest einem Turbolader (3), welcher einen Verdichter (4) aufweist, einem Umblaseventil (6), mittels welchem der Verdichter (4) zumindest von einem Teilstrom eines für die Verbrennung vorgesehenen Treibstof-fGemisches umgehbar ist, sowie einer mit dem Umblaseventil (6) verbundenen Steuer- oder Regeleinheit (7) zur Regelung oder Steuerung eines Öffnungsgrades des Umblaseventils (6), wobei die Steuer- oder Regeleinheit (7) dazu ausgebildet ist, das Umblaseventil (6) beim Starten der Brennkraftmaschine (1) zumindest teilweise zu öffnen und/oder zumindest teilweise geöffnet zu halten.

Pressure Regulator

Die Erfindung betrifft einen Druckregler, insbesondere elektronischer Druckregler, insbesondere für Erdgas getriebene Fahrzeuge, umfassend einen zwischen der Hochdruckseite und der Niederdruckseite angeordneten Kolben (1) in dem eine Medium von der Hochdruckseite (5) zur Niederdruckseite (6) strömt. Erfindungsgemäß ist vorgesehen, dass im Kolben (1) ein Strömungsglätter (2) zum Glätten der Strömung angeordnet ist, wobei der Strömungsglätter (2) ein System von Kanälen aufweist, wobei das System von Kanälen zumindest einen durchgehenden Kanal ausbildet der denn Strömungsglätter (2) vollständig durchsetzt und die Hochdruckseite (5) des Druckreglers (10) mit der Niederdruckseite (6) strömungstechnisch verbindet.

Verbrennungsmotor

Verbrennungsmotor mit -wenigstens einer Vorkammer (2), welche mit einer Vorkammerzufuhrleitung (3) zur Versorgung der Vorkammer (2) mit einem Treibstoff (F) verbunden ist, -wenigstens einer Hauptbrennkammer (4), wobei Treibstoff (F) in der Hauptbrennkammer (4) durch eine aus der wenigstens einen Vorkammer {2) in die wenigstens eine Hauptbrennkammer (4) übertretende, durch Entzündung von Treibstoff (F) in der Vorkammer (2) erzeugte Zündfackel entzündbar ist, wobei an der Vorkammerzufuhrleitung (3) zur Reduzierung einer Druckdifferenz zwischen einer Vorkammergaszufuhr und der wenigstens einen Hauptbrennkammer (4) wenigstens ein Ventil (6.1, 6.2) vorgesehen ist, -welches mittels einer Steuer- oder Regeleinrichtung {5) in Abhängigkeit einer für eine Veränderung einer vom Verbrennungsmotor (1) erbrachten Leistung charakteristische Größe steuer- oder regelbar ist und/oder - mittels welchem ein durch die Vorkammerzufuhrleitung (3) zur wenigstens einen Vorkammer (2) gerichteter Vorkammertreibstoffstrom ...

Gas engine and method for operating same

Gasmotor (10), mit mindestens einem Zylinder (11), wobei der oder jeder Zylinder (11) eine Hauptbrennkammer (12) zur Verbrennung eines Brenngas-Luft-Gemischs und eine mit der Hauptbrennkammer (12) über einen Überströmkanal (14) gekoppelte, gespülte Vorkammer (13) umfasst, mit mindestens einem Abgasturbolader (15), der eine Turbine (16) zur Entspannung von den oder jeden Zylinder (11) verlassendem Abgas und einen Verdichter (18, 22) zur Verdichtung von dem oder jedem Zylinder (11) zuzuführender Luft umfasst, und mit mehreren Luftpfaden für die dem oder jedem Zylinder (11) zuzuführende Luft, wobei über einen ersten Luftpfad (17) mit einem ersten Verdichter (18) zumindest Luft verdichtbar und der Hauptbrennkammer (12) des oder jedes Zylinders (11) zuführbar ist, und wobei über einen zweiten Luftpfad (21) mit einem zweiten Verdichter (22) ein Brenngas-Luft-Gemisch verdichtbar und der Vorkammer (13) des oder jedes Zylinders (11) zuführbar ist. Der erste Luftpfad (17) und der zweite Luftpfad ...

Gas engine and method for operating same

Gasmotor (10), mit mindestens einem Zylinder (11), wobei der oder jede Zylinder (11) eine Hauptbrennkammer (12) zur Verbrennung eines Brenngas-Luft-Gemischs und eine mit der Hauptbrennkammer (12) über einen Überströmkanal (14 ) gekoppelte, gespülte Vorkammer (13) umfasst, und mit mindestens einem Abgasturbolader (15), der eine Turbine (16) zur Entspannung von den oder jeden Zylinder (11) verlassendem Abgas und einen Verdichter (18, 22) zur Verdichtung von dem oder jedem Zylinder (11) zuzuführender Luft umfasst, und mit mehrere Luftpfaden für die dem oder jedem Zylinder (11)~ zuzuführende Luft, wobei über einen ersten Luftpfad (17) mit einem ersten Verdichter (18) zumindest Luft verdichtbar und der Hauptbrennkammer (12) des oder jedes Zylinders (11) zuführbar ist, und wobei über einen zweiten Luftpfad (21) mit einem zweiten Verdichter (22) ein Brenngas-Luft-Gemisch verdichtbar und der Vorkammer (13) des oder jedes Zylinders (11) zuführbar ist.

GAS ENGINE WITH VAT OIL IGNITION AND OPERATING PROCEDURE FOR GAS ENGINE WITH VAT OIL IGNITION

FUEL SUPPLY CONTROL SYSTEM AND CONTROL VALVE FOR DOUBLE FUEL ENTERPRISE OF A COMBUSTION ENGINE

Pressure regulator

Die Erfindung betrifft einen Druckregler, insbesondere elektronischer Druckregler, insbesondere für Erdgas getriebene Fahrzeuge, umfassend einen zwischen der Hochdruckseite und der Niederdruckseite angeordneten Kolben (1) in dem ein Medium von der Hochdruckseite (5) zur Niederdruckseite (6) strömt. Erfindungsgemäß ist vorgesehen, dass im Kolben (1) ein Strömungsglätter (2) zum Glätten der Strömung angeordnet ist, wobei der Strömungsglätter (2) ein System von Kanälen aufweist, wobei das System von Kanälen zumindest einen durchgehenden Kanal ausbildet der den Strömungsglätter (2) vollständig durchsetzt und die Hochdruckseite (5) des Druckreglers (10) mit der Niederdruckseite (6) strömungstechnisch verbindet.

COMBUSTION ENGINE

Hydrogen Fuelled Hybrid Powertrain and Vehicle

FUEL GAS SUPPLY SYSTEM OF GAS ENGINE

Provided is a fuel gas supply system of a gas engine capable of supplying to a fuel gas supply unit a fuel gas of nearly constant pressure with little fluctuation. A high-pressure tank and a gas injector are connected to each other by a supply passage, on which is provided an electromagnetic pressure regulating valve. The electromagnetic pressure regulating valve is configured to regulate the pressure of the gas flowing through the supply passage to a pressure corresponding to a current supplied thereto. The gas pressure downstream of the electromagnetic pressure regulating valve is detected by a low-pressure-side pressure sensor. A controller is electrically connected to the electromagnetic pressure regulating valve. The controller controls the current supplied to the electromagnetic pressure regulating valve such that pressure detected by the low-pressure-side pressure sensor becomes predetermined target pressure.

ELECTROMAGNETIC VALVE FOR A TANK VALVE OF A FUEL SUPPLY SYSTEM

The present invention relates to an electromagnetic valve (200) for a tank valve (103) of a fuel supply system (100) of a gas fuel motor vehicle, having a magnetic coil (202) with an inner guide (207), and a magnetic armature (201) which can move axially in the inner guide (207). The magnetic anchor (201) consists of an anchor (205), a seal element (204) which is arranged between the anchor (205) and a fuel inlet (208c), and a counter pole (206) which abuts the seal element (204). The present invention also relates to such a tank valve (103) and to a fuel supply system (100) having such an electromagnetic valve (200).

MONITORING THE FUNCTION OF SOLENOID VALVES FOR FUEL INJECTION SYSTEMS

Internal combustion engine

Carburettor for IC engine - has perforated tube for fuel outlet with plug controlled by engine load

엔진 장치

... 안정한 운전 동작을 실현함과 동시에 비상 시에 있어서도 시스템의 구동을 유지시킬 수 있는 엔진 장치를 제공하는 것을 목적으로 한다. 본원 발명의 엔진 장치는 실린더(77) 내에 공기를 공급시키는 흡기 매니폴드(67)와, 상기 흡기 매니폴드(67)로부터 공급되는 공기에 연료 가스를 혼합시켜서 상기 실린더(77)에 흡기하는 가스 인젝터(98)와, 상기 연료 가스를 공기에 예혼합시킨 예혼합 연료를 상기 실린더(77) 내에서 착화시키는 착화 장치(79)와, 엔진 장치로부터의 출력을 나타내는 출력 신호에 의거하여 예혼합 연료의 연소 제어를 실행하는 제어부(73)를 구비하고 있다. 상기 제어부(73)는 공기량이 부족되어 있다고 판정했을 경우에 출력 신호를 상실했을 때, 가스 인젝터(98)로부터의 연료 가스 분사량에 의거하여 출력 신호를 추정하고, 추정한 출력 신호에 의거하여 연소 제어를 실행시킨다.

A DEVICE TO TURN A NORMAL DIESEL ENGINE INTO MOTOR TO DUAL FUEL, DIESEL/GAS

METHOD AND DEVICE FOR OPERATING AN INTERNAL COMBUSTION ENGINE

The invention relates to a method for operating an internal combustion engine, in particular for load regulation and/or load control in the internal combustion engine which has: - an intake section 30 and an engine 10 with a number of cylinders Ai, Bi and a receiver 80 which is arranged upstream of the cylinders Ai, Bi, wherein the intake section 30 has: - a supercharging means with a compressor (51) and a bypass for bypassing the supercharging means, and wherein - the receiver 80 is assigned an engine throttle DK and the bypass is assigned a compressor bypass throttle VBP; and, in the method, a position of the engine throttle DK and/or the compressor bypass throttle (VDPK) is set depending on operation in order to influence a charge fluid. It is provided according to the invention that, in particular, the intake section 30 is assigned an intake section model, by means of which at least one mass flow and/or state of the charge fluid upstream of the engine 10 is determined, and, in particular ...

Bi-fuel engine with increased power

A conventional gasoline engine is retrofitted and calibrated to operate as a bi-fuel engine using Hydrogen as the second fuel. When operated with Hydrogen, which typically leads to a reduction of engine output power, the engine is preferably operated in a charged mode and in a lean mode with the engine throttle kept in a wide open position during charged and lean mode operation resulting in a more efficient engine with a reduction of engine output power loss.

ЭЛЕКТРОМАГНИТНЫЙ КЛАПАН ДЛЯ КЛАПАНА БАКА СИСТЕМЫ ПОДАЧИ ТОПЛИВА ТРАНСПОРТНОГО СРЕДСТВА С ГАЗОВЫМ ДВИГАТЕЛЕМ, КЛАПАН БАКА СИСТЕМЫ ПОДАЧИ ТОПЛИВА (ВАРИАНТЫ), СБОРНЫЙ ГЕРМЕТИЧНЫЙ КОРПУС ЭЛЕКТРОМАГНИТНОГО КЛАПАНА, СИСТЕМА ПОДАЧИ ТОПЛИВА И ОГРАНИЧИТЕЛЬ ПОТОКА ДЛЯ СИСТЕМЫ ПОДАЧИ ТОПЛИВА

Настоящее изобретение относится к электромагнитному клапану (200) для клапана (103) бака системы подачи топлива (100) газобаллонного транспортного средства, включающему катушку (202) электромагнита с внутренним замыкающим элементом (207) и якорь (201) электромагнита, выполненный с возможностью перемещения в аксиальном направлении во внутреннем замыкающем элементе (207). Якорь (201) электромагнита состоит из якоря (205), уплотнительного элемента (204), который расположен между якорем (205) и топливопроводом (208с), и противоположного полюса (206), прилегающего к уплотнительному элементу (204). Настоящее изобретение относится, далее, к такому клапану (103) бака и системе подачи топлива (100) с таким электромагнитным клапаном (200). Технический результатом является обеспечение простой и компактной конструкции электромагнитного клапана, малое потребление мощности и защита от воздействия внешних сил. 6 н. и 13 з.п. ф-лы, 14 ил.

СИСТЕМА УПРАВЛЕНИЯ ГАЗОПОРШНЕВЫМ ДВИГАТЕЛЕМ

Полезная модель может быть использована для управления газопоршневым двигателем (ГПД) в составе мотор-генераторов и когенерационных установок для использования газа или смеси горючих газов различной теплотворной способности. Система управления ГПД содержит электронный блок управления и, связанные с ним термопару, размещенную в выпускном коллекторе, датчики частоты вращения коленчатого вала, углового положения распределительного вала, детонации и расхода воздуха, а также датчики давления и температуры газа. Система дополнительно оснащена перепускным электромагнитным клапаном, установленным на первой ступени двухступенчатого редуктора низкого давления, трубопроводом повышенного давления, соединенным с одной стороны через перепускной электромагнитный клапан с первой ступенью редуктора низкого давления, а с другой стороны через трехходовой регулировочный клапан с газовой магистралью. Технический результат заключается в определении относительной теплотворной способности газа по величине температуры ...

ЭЛЕКТРОМАГНИТНЫЙ КЛАПАН ДЛЯ КЛАПАНА БАКА СИСТЕМЫ ПОДАЧИ ТОПЛИВА ТРАНСПОРТНОГО СРЕДСТВА С ГАЗОВЫМ ДВИГАТЕЛЕМ, КЛАПАН БАКА СИСТЕМЫ ПОДАЧИ ТОПЛИВА (ВАРИАНТЫ), СБОРНЫЙ ГЕРМЕТИЧНЫЙ КОРПУС ЭЛЕКТРОМАГНИТНОГО КЛАПАНА, СИСТЕМА ПОДАЧИ ТОПЛИВА И ОГРАНИЧИТЕЛЬ ПОТОКА ДЛЯ СИСТЕМЫ ПОДАЧИ ТОПЛИВА

... 1. Электромагнитный клапан (200) для клапана (103) бака системы (100) подачи топлива газобаллонного транспортного средства, содержащий катушку (202) электромагнита с внутренним замыкающим элементом (207) и якорь (201) электромагнита, выполненный с возможностью перемещения в аксиальном направлении во внутреннем замыкающем элементе (207), причем якорь (201) электромагнита состоит из якоря (205), уплотнительного элемента (204), который расположен между якорем (205) и топливопроводом (208с), и противоположного полюса (206), прилегающего к уплотнительному элементу (204).2. Электромагнитный клапан по п.1, отличающийся тем, что катушка (202) электромагнита и якорь (201) электромагнита расположены так, что при активации катушки (202) электромагнита вначале смещением якоря (205) в направлении противоположного полюса (206) и отделением якоря (205) от уплотнительного элемента (204) открывается топливное отверстие (220) опережающего управления, а затем смещением якоря (201) электромагнита в направлении ...

ДВИГАТЕЛЬ ВНУТРЕННЕГО СГОРАНИЯ НА ГАЗОВОМ ТОПЛИВЕ И СПОСОБ УПРАВЛЕНИЯ ДВИГАТЕЛЕМ ВНУТРЕННЕГО СГОРАНИЯ НА ГАЗОВОМ ТОПЛИВЕ

... 1. Двигатель внутреннего сгорания на газовом топливе, работающий на газообразном водороде в качестве газообразного топлива, включающий клапан впрыска в цилиндр, предназначенный для впрыска газообразного топлива непосредственно в камеру сгорания; устройство зажигания, размещенное по направлению потока газообразного топлива, впрыснутого через клапан впрыска в цилиндр; управляющий блок, предназначенный для управления временем срабатывания устройства зажигания и временем срабатывания клапана впрыска в цилиндр с целью осуществления изменения посредством этого типов сжигания газообразного топлива, впрыскиваемого через клапан впрыска в цилиндр, между сжиганием предварительно перемешанной воздушно-топливной смеси и диффузионным сжиганием, указанный двигатель внутреннего сгорания на газовом топливе характеризуется тем, что управляющий блок вычисляет коэффициент избытка воздуха на основании количества подаваемого водорода и количества воздуха на впуске; управляющий блок выбирает в качестве режима ...

СПОСОБ УПРАВЛЕНИЯ ГАЗОВЫМ ДВИГАТЕЛЕМ И СИСТЕМОЙ ГАЗОВОГО ДВИГАТЕЛЯ

Изобретение относится к способу управления газовым двигателем и системой газового двигателя. Способ управления системой газового двигателя заключается в подаче воздуха через турбонагнетатель, смешивании его с топливным газом и подаче смешанного газа в камеру сгорания. Топливный газ проходит через линию подачи топливного газа и его количество регулируется посредством клапана регулирования расхода топлива. При низкой теплотворности топливного газа или высокой выходной мощности двигателя часть топливного газа отводят в линии подачи топливного газа (30) выше по потоку относительно клапана регулирования расхода топлива (20). Отводимый топливный газ подают в камеру сгорания через клапан регулирования отвода (33). Оставшуюся часть топливного газа подают через главную линию подачи газа (26) и затем в клапан регулирования расхода топлива (20). Расход отводимого топливного газа устанавливают меньшим, чем значение расхода топливного газа на стороне отвода (26). При высокой теплотворности топливного ...

СПОСОБ РАБОТЫ СИСТЕМЫ МОНИТОРИНГА ПАРАМЕТРОВ ГАЗОБАЛЛОННОГО ОБОРУДОВАНИЯ И УЧЕТА РАСХОДА ТОПЛИВА ДВИГАТЕЛЯ ТРАНСПОРТНОГО СРЕДСТВА, РАБОТАЮЩЕГО НА ГАЗОВОМ ИЛИ ГАЗОВОМ И ЖИДКОМ ТОПЛИВЕ

Изобретение относится к области транспорта, а именно к способам работы систем, осуществляющих мониторинг движения транспортного средства (ТС) и учитывающих расход и другие параметры газообразного и жидкого топлива в любой момент времени. Технический результат - повышение точности представления данных о работе ТС, его двигателя, системы газобаллонного оборудования (ГО) и других вспомогательных систем. Предложен способ работы системы мониторинга параметров ГО и учета расхода топлива двигателя ТС, работающего на газовом или газовом и жидком топливе, заключающийся в том, что проводят замер давления, температуры и уровня газа в баллонах ГО, а также мониторинг геометрии и положения в любой момент времени баллона ГО, мониторинг состояния запорной аппаратуры ГО и загрязнений баллонов ГО, проводят мониторинг показаний с приборов измерения расхода топлива, в том числе природного газа, после чего полученную информацию хранят, передают, обрабатывают и проводят анализ. Получают, хранят, передают, обрабатывают ...

СПОСОБ ЭКСПЛУАТАЦИИ ГАЗОВОГО ДВИГАТЕЛЯ

Motorsteuerungssystem mit kraftstoffbasierter Zeitsteuerung

Steuerungssystem (125) für einen Motor (105) mit einem Zylinder (135), wobei das Steuerungssystem aufweist:ein zum Regeln einer Fluidströmung des Zylinders bewegliches Motorventil,einen dem Motorventil zugeordneten Aktor (202),einen zum Erzeugen eines eine im Inneren des Zylinders nach Beendigung eines ersten Verbrennungsereignis verbleibende Menge einer Luft/Kraftstoffmischung angebenden Signals ausgebildeten Sensor (272), undeine mit dem Aktor und dem Sensor in Verbindung stehende Steuerung (270), wobei die Steuerung ausgebildet istzum Vergleichen der Menge mit einer Sollmenge, und zum wahlweise Regeln des Aktors zum Anpassen einer einem nachfolgenden Verbrennungsereignis zugeordneten Zeitsteuerung des Motorventils basierend auf dem Vergleich.

Gaseous fueled i.c. engine with staggered intake valve opening to reduce backfire

Gaseous fuel. eg hydrogen, and intake air are delivered to a first intake port 252 of a cylinder of an i.c. engine and intake air without gaseous fuel is delivered to a second intake port 250 of the cylinder, the first port 252 separated from the second port 250. Further, the method includes inducting the fuel and intake air from the first port via a first intake valve 222, and the intake air from the second port via a second intake valve 220, where the first intake valve 222 is opened after, eg 20 to 60 crank degrees after, the second intake valve 220. The gaseous fuel may be delivered into the first port 252 by an injector 260 located downstream of the bifurcation of the intake ports 250, 252. The gaseous fuel thus enters the cylinder after the residual gas and hot metal have been cooled by the fuel-free air, reducing the likelihood of backfire. A variable cam timing system may be used to adjust valve opening timing and injection timing depending on judged potential for backfire.

Improved ignition and sogav helth test during the starting of a dual fuel engine without the main diesel system

Internal combustion engine

Method and control device for operating a gas engine

Verfahren zum Betreiben eines Gasmotors (10) mit einem Abgaskatalysator (13) und mit einer Abgasrückführung (12), wobei der Gasmotor (10) Zylinder (11) aufweist, die eine Hauptbrennkammer (14) und eine Vorbrennkammer (15) aufweisen, wobei die Zylinder (11) verlassendes Abgas (23) über den Abgaskatalysator (13) leitbar ist, und wobei ein Teil des die Zylinder verlassenden Abgases (23) über die Abgasrückführung (12) in Richtung auf die Zylinder (11) führbar ist. In einer ersten Betriebsstrategie wird der Gasmotor (10) derart betrieben wird, dass über die Abgasrückführung (12) geleitetes Abgas (23) in Richtung auf die Hauptbrennkammern (14) der Zylinder geführt wird, sodass das den Hauptbrennkammern zuzuführende Gas/Luft-Gemisch (18) Abgas enthält; dass über die Abgasrückführung geleitetes Abgas (23) nicht in Richtung auf die Vorbrennkammern (15) der Zylinder geführt wird, sodass das den Vorbrennkammern zuzuführende Gas/Luft-Gemisch (19) kein Abgas enthält; dass der Gasanteil des den Hauptbrennkammern ...

ZÜNDEINRICHTUNG FÜR EINEN GASMOTOR SOWIE GASMOTOR

Method and control device for operating a gas engine

Verfahren zum Betreiben eines Gasmotors (10), der mehrere Zylinder (12) umfasst, wobei jeder Zylinder (12) eine Brennkammer (24) und einen in der Brennkammer (24) geführten Kolben (13) aufweist, der über eine Pleuelstange (14) an einer Kurbelwelle (15) des Gasmotors angreift, wobei zylinderindividuell ein Brennkammerdruck in der jeweiligen Brennkammer (24) der Zylinder (12) messtechnisch erfasst wird, wobei ein Drehmoment an der Kurbelwelle (15) erfasst wird, und wobei die zylinderindividuellen Brennkammerdrücke und das Drehmoment zur Erfassung von Zündaussetzern an den Zylindern (12) derart gemeinsam ausgewertet werden, dass dann, wenn sowohl an mindestens einem Zylinder (12) ein zu geringer Brennkammerdruck als auch an der Kurbelwelle (15) eine zu geringes Drehmoment erfasst werden, auf Zündaussetzer an mindestens einem Zylinder (12) geschlossen wird.

Verbrennungsmotor und Verfahren zum Betrieb desselben

Internal combustion engine includes at least one combustion chamber to which air, a combustion gas, and a stabilizing gas can be supplied. At least one sensor measures at least one engine variable and an open-loop or closed-loop control device is connected to the at least one sensor. Due to the open-loop or closed-loop control device, a quantity of the stabilizing gas supplied to the at least one combustion chamber can be controlled by open-loop or closed-loop control in dependence on the at least one engine variable.

Verfahren zur Regelung einer Brennkraftmaschine

Verfahren zur Regelung einer Brennkraftmaschine (1 ), wobei bei einer mit einer Vorkammer (2) versehenen Kolben-Zylinder-Einheit (3) die der Vorkammer (2) zugeführte Menge an Treibgas an eine Verstellung der Betätigungscharakteristik eines Einlass- und/oder Auslassventils (4, 5) der Kolben-Zylinder-Einheit (3) angepasst wird.

Method and control device for determining a gas consumption a gas fired engine

Verfahren zur Bestimmung eines Gasverbrauchs eines mit Gas betriebenen Motors (10), nämlich eines mit Gas betriebenen Gasmotors oder eines mit Gas betriebenen Dual-Fuel-Motors, wobei der Motor (10) unter Ist-Betriebsbedingungen betrieben wird und unter den Ist-Betriebsbedingungen der Ist-Gasverbrauch des Motors (10) erfasst wird, und wobei ein unter Ziel­Betriebsbedingungen zur erwartender Ziel-Gasverbrauch des Motors (10) abhängig von dem Ist-Gasverbrauch und abgängig von Abweichungen zwischen den Ist-Betriebsbedingungen und den Ziel­ Betriebsbedingungen berechnet wird.

Brennkraftmaschine und Verfahren zum Starten einer Brennkraftmaschine

The invention relates to an internal combustion engine (1), comprising at least one turbocharger (3), which has a compressor (4); a bypass valve (6), by means of which the compressor (4) can be bypassed at least by a partial flow of a fuel mixture intended for combustion; and an open-loop or closed-loop control unit (7) connected to the bypass valve (6) for controlling a degree of opening of the bypass valve (6) in a closed-loop or open-loop manner, wherein the open-loop or closed-loop control unit (7) is designed to at least partially open the bypass valve (6) and/or to keep the bypass valve at least partially open during the starting of the internal combustion engine (1).

REGULATING SYSTEM FOR AN INTERNAL COMBUSTION ENGINE

INTERNAL COMBUSTION ENGINE AND METHOD FOR OPERATING THE SAME

An Internal combustion engine, with at least one combustion chamber, to which air a combustion gas and a stabilizing gas can be supplied, at least one sensor for measuring at least one engine variable, and an open-loop or closed loop control device which is connected to the at least one sensor, characterized in that by means of the open-loop or closed-loop control device, a quantity of the stabilizing gas supplied to the at least one combustion chamber can be controlled by open-loop or closed-loop control in dependence on the at least one engine variable. j/14 -x -t - - cCn ...

Engine system

This engine system (1) is provided with: an engine (2) having a combustion chamber (2a); an intake passage (3) in which air to be supplied to the combustion chamber (2a) flows; an exhaust passage (4) in which exhaust gas generated from the combustion chamber (2a) flows; a modifier (21) that modifies a fuel to generate a modified gas containing hydrogen; a gas supply flow passage (13) in which air to be supplied to the modifier (21) flows; a bypass flow passage (18) that is connected to the gas supply flow passage (13) and the exhaust passage (4) so as to bypass the modifier (21), and circulates the fuel having passed through the modifier (21) to the upstream side of the modifier (21); and a switching valve (19) that switches between a normal position (19a) at which the fuel having passed through the modifier (21) does not flow to the bypass flow passage (18) and a circulation position (19b) at which the fuel having passed through the modifier (21) flows to the bypass flow passage (18).

ELECTROMAGNETIC VALVE FOR A TANK VALVE OF A FUEL SUPPLY SYSTEM

The present invention relates to an electromagnetic valve (200) for a tank valve (103) of a fuel supply system (100) of a gas fuel motor vehicle, having a magnetic coil (202) with an inner guide (207), and a magnetic armature (201) which can move axially in the inner guide (207). The magnetic anchor (201) consists of an anchor (205), a seal element (204) which is arranged between the anchor (205) and a fuel inlet (208c), and a counter pole (206) which abuts the seal element (204). The present invention also relates to such a tank valve (103) and to a fuel supply system (100) having such an electromagnetic valve (200).

IGNITION DEVICE FOR A GAS ENGINE AND GAS ENGINE, CAPABLE OF STABILIZING AIR-FUEL MIXTURE OF GAS IGNITED BY ONE MORE UNITS OF AN IGNITION SYSTEM

PURPOSE: An ignition device for a gas engine and gas engine is provided to increase stay time of air-fuel mixture of gas ignited and help it to be ignited. CONSTITUTION: An ignition device for a gas engine and gas engine comprises a heater(12) used as an ignition source. A sleeve-like accommodation unit(13) separates each heater from an air-fuel to be ignited. The heater heats a part of each accommodating unit which is in contact with the air-fuel mixture to be ignited up to temperature required to ignite the air-fuel mixture. The heater comprises one or more units(17) stabilizing the air-fuel mixture of the gas to be ignited. © KIPO 2009 ...

엔진

... 엔진 (21) 에 있어서, 배기 바이패스 밸브 (V3) 는, 배기 매니폴드 (44) 의 출구와 과급기 (49) 의 배기 출구를 접속하는 배기 바이패스 유로 (18) 에 형성된다. 흡기 바이패스 밸브 (V2) 는, 흡기 매니폴드 (67) 의 입구와 과급기 (49) 의 입구를 접속하는 흡기 바이패스 유로 (17) 에 형성된다. 흡기압 센서 (39) 는, 흡기 매니폴드 (67) 의 압력을 검출한다. 엔진 제어 장치 (73) 는, 설정된 목표 압력에 흡기압 센서 (39) 의 검출 압력이 가까워지도록, 흡기 바이패스 밸브 (V2) 에 대해 밸브 개도의 지령값을 출력하여 피드백 제어한다. 엔진 제어 장치 (73) 는, 흡기 바이패스 밸브 (V2) 에 대해, 밸브 개도의 상한 또는 하한을 나타내는 지령값을 소정 시간 이상 계속해서 출력하고 있는 경우에, 배기 바이패스 밸브 (V3) 및 흡기 바이패스 밸브 (V2) 중 적어도 어느 것에 이상이 있다고 판정한다.

FUEL SUPPLY SYSTEM OF INTERNAL COMBUSTION ENGINE USING FUEL GAS ADJUSTMENT DEVICE AND CONTROL METHOD THEREOF

The present invention relates to a fuel supply system of an engine capable of adjusting a fuel gas by supplying total amount of the gas fuel discharged from an evaporator, a zero governor or a regulator to a gas fuel adjustment device directly without via a fuel distribution pipe, and a control method thereof. According to the present invention, the fuel supply system comprises a gas fuel discharge device to discharge the gas fuel outputted from a gas fuel tank via a fuel blockage valve and a mixer where the fuel and air are mixed. A fuel pipeline is configured so that the total amount of the gas fuel discharged from the gas fuel discharge device is directly supplied to the mixer through the gas fuel adjustment device. An electronic throttle valve is comprised to adjust the amount of air supplied to an intake system of the engine from the mixer. An engine electronic control device receives each sensor signal of sensors attached to the engine, and calculates target air amount and target ...

가스 엔진의 배기 가스 제어 장치

NOx 배출량을 일시적으로 억제할 필요가 있는 환경 조건이나 지리적 조건이 발생한 경우에, NOx 억제 운전을 행하고, 그 이외의 경우에는 연비를 중시한 안정 운전을 행하게 하여, NOx 저감과 연비 향상을 도모하는 가스 엔진의 배기 가스 제어 장치를 제공하는 것을 목적으로 하며, 가스 엔진의 배기 가스 제어 장치에 있어서, 연료 소비율이 최적인 제 1 목표 착화 시기 및 제 1 목표 공기 과잉률에 의한 기본 운전 모드(80)와, 제 1 목표 착화 시기를 지연시킨 제 2 목표 착화 시기 및 상기 제 1 목표 공기 과잉률을 증대시킨 제 2 목표 공기 과잉률에 의한 낮은 NOx 운전 모드(82)와, NOx 배출량을 일시적으로 억제하할지 여부를 판정하는 NOx 저감 요구 판정 수단(86)과, NOx 저감 요구 판정 수단에 의해서 저감 요구 조건이 만족되는 동안, 낮은 NOx 운전 모드로 전환하는 운전 모드 전환 수단(84)을 구비한 것을 특징으로 한다.

Control device for internal combustion engine and control method for internal combustion engine

COMBUSTION CONTROL DEVICE FOR GAS ENGINE

The objective of the present invention is to improve the output and the thermal efficiency of a gas engine by advancing the ignition timing for each cylinder to the absolute maximum while suppressing knocking for all cylinders with a simple and inexpensive means. A first calculation unit (32) calculates a knocking limit ignition timing (Tia) for the representative cylinder (14a) from the cylinder pressure waveform. A second calculation unit (34) calculates a knocking limit ignition timing (Tia') for a representative cylinder (14a) by substituting a driving state quantity and basic engine specifications into a formula (1). A third calculation unit (36) determines a correction coefficient (C) by comparing the knocking limit ignition timings (Tia) and (Tia'). A fourth calculation unit (38) calculates the knocking limit ignition timings (Tib-Tif) for the cylinders other than the representative cylinder (14a) on the basis of the obtained correction coefficient (C). Preferably the fourth calculation ...

Remote metering for gaseous fuels and oxidizers

A separate metering and metering unit for a diesel and/or propane or similar gas/liquid fuel powered internal combustion engine such as a dual fueled engine incorporates an intake filter, a lockout solenoid, and a metering device into a single integrated unit remote of the carburetor of the engine. The metering unit includes a heater immediately adjacent to the output of the injector metering device in order to provide heat necessary to prevent any freezing of the unit injector or gaseous fuel or oxidizers downstream of the metering unit. The injection of the propane allows for correct operation of a catalytic converter.

СПОСОБ ЭКСПЛУАТАЦИИ ГАЗОВОГО ДВИГАТЕЛЯ

Изобретение относится к области двигателестроения, а именно к способу эксплуатации газового двигателя, в частности стационарного, причем предусматривается присоединенный к газовому двигателю (3) выхлопной тракт (29), через который протекают выхлопные газы (30) газового двигателя (3). Газовый двигатель (3) работает на бедной газовой смеси (6) горючего газа и воздуха, причем газовый двигатель (3) эксплуатируется согласно циклу Миллера, предпочтительно таким образом, что момент закрытия по меньшей мере одного впускного клапана газового двигателя (3) приходится на диапазон угла поворота коленчатого вала от около 50° угла поворота коленчатого вала перед нижней мертвой точкой до около 10° угла поворота коленчатого вала перед нижней мертвой точкой. Согласно изобретению выхлопной тракт (29) имеет по меньшей мере один SCR-каталитический элемент (31), с помощью которого содержание оксидов азота (NO) в протекающих через SCR-каталитический элемент (31) выхлопных газах (30) снижается посредством углеводорода ...

Система и способ для управления подачей топлива к судовому двигателю

Раскрыты система и способ для управления подачей топлива к двигателю для судов. Система включает в себя: рабочую зону системы, в которой СПГ накачивается посредством насоса и газифицируется; и рабочую зону подачи, принимающую накачанный и газифицированный СПГ из рабочей зоны системы, и подающую СПГ к двигателю. Заданное давление рабочей зоны системы установлено выше, чем заданное давление рабочей зоны подачи. Рабочая зона системы содержит насос высокого давления, накачивающий СПГ, газификатор, газифицирующий СПГ, накачанный насосом высокого давления, и возвратную линию, через которую накачанный СПГ, введенный в газификатор, возвращается со стороны ниже по потоку насоса высокого давления к стороне выше по потоку резервуара-хранилища или насоса высокого давления. Техническим результатом является обеспечение стабильной подачи топлива в двигатель. 2 н. и 6 з.п. ф-лы, 1 ил.

Brennkraftmaschinensystem und Verfahren zum Steuern eines Brennkraftmaschinensystems

Ein Brennkraftmaschinensystem 1 weist eine Brennkraftmaschine 2, einen Turbolader 3, der Druckluft A1 abgibt, indem Abgas G verwendet wird, das aus der Brennkraftmaschine 2 zugeführt wird, einen Reformer 4, der ein erstes Druckluft/Kraftstoff-Gemisch P1 abgibt, das durch eine exotherme Reaktion zwischen der Druckluft A1 und einem Kraftstoff F2 erlangt wird, und einen Druckluft/Kraftstoff-Gemischerzeuger 6 auf, der ein zweites Druckluft/Kraftstoff-Gemisch P2 abgibt, das erlangt wird, indem Druckluft A1a mit dem ersten Druckluft/Kraftstoff-Gemisch P1 vermischt wird. Der Druckluft/Kraftstoff-Gemischerzeuger 6 weist einen Zusammenführungsteil 16, der konfiguriert ist, die Druckluft A1a aus dem Turbolader 3 und das erste Druckluft/Kraftstoff-Gemisch P1 aus dem Reformer 4 aufzunehmen und das zweite Druckluft/Kraftstoff-Gemisch P2 abzugeben, und einen Strömungsverhältnis-Anpassungsteil 17 auf, der konfiguriert ist, ein Verhältnis zwischen einer Strömungsrate der Druckluft A1a, die dem Zusammenführungsteil ...

Use of pressurized fuels in an internal combustion engine

An amount of inlet air can be delivered to a combustion volume of an internal combustion engine via an air inlet port, and delivery of an amount of a fuel from a compressed fuel reservoir to the combustion volume can be controlled via a pressurized fuel inlet port positioned to the deliver the amount of the fuel directly into the combustion volume separately from the air inlet port. The amount of the fuel can be controlled relative to the amount of the inlet air to create an air-fuel mixture within the combustion volume having a target air/fuel ratio. In other aspects, a vehicle chassis can be designed to incorporate a compressed fuel reservoir as a structural part of the chassis. Methods, system, and articles of manufacture relating to these features are described.

Dual fuel source trailer tractor

The present disclosure teaches a method to extend the distance interval between refueling for gaseous fueled tractor trailers. Recognizing the current dearth of a national gaseous refueling infrastructure to support long distance gaseous powered vehicle transport this disclosure provides a method and system of storing gaseous fuel in high pressure vessels on a tractor and on a trailer and operating an engine for the tractor (and trailer combination) with gaseous fuel feed from both tractor and trailer gaseous fuel supplies.

Control of an engine-driven generator to address transients of an electrical power grid connected thereto

A technique for providing electric power to an electric power utility grid includes driving an electric power alternator coupled to the grid with a spark-ignited or direct injection internal combustion engine; detecting a change in electrical loading of the alternator; in response to the change, adjusting parameters of the engine and/or generator to adjust power provided by the engine. In one further forms of this technique, the adjusting of parameters for the engine includes retarding spark timing and/or interrupting the spark ignition; reducing or retarding direct injection timing or fuel amount and/or interrupting the direct injection; and/or the adjusting of parameters for the generator including increasing the field of the alternator or adding an electrical load.

Variable gas substitution for duel fuel engine and method

A system having an internal combustion engine connected to a driven device includes primary and secondary fuel supplies. A primary fuel supply sensor is configured to provide a primary fuel supply signal indicative of a rate of supply of a primary fuel to the engine through the primary fuel supply. A secondary fuel supply sensor is configured to provide a secondary fuel supply signal indicative of a rate of supply of a secondary fuel to the engine through the secondary fuel supply. A power output sensor measures a parameter indicative of a power output of the driven device and provides a power output signal. An electronic controller receives the primary and secondary fuel supply signals and the power output signal, and determines a characteristic of the secondary fuel based on the primary and secondary fuel supply signals and the power output signal.

Carbon Oxygen Hydrogen Motor

A carbon oxygen hydrogen motor comprises an enclosure, a combustion chamber, and a plurality of injectors. A rotational crank is positioned within the enclosure and connected with a piston. The piston is positioned within the combustion chamber and connected to the rotational crank by a rod. A stream of hydrogen gas, oxygen gas, and carbon dioxide gas enter into the combustion chamber through the plurality of injectors. A spark plug, which is connected to the combustion chamber, ignites hydrogen gas, oxygen gas, and carbon dioxide gas inside the combustion chamber causing a reaction. The reaction moves the piston upward. After the reaction has taken place, the piston moves downward. The downward motion of the piston ejects all of the byproducts from the reaction through a ejecting valve located in the combustion chamber. Since the piston is connected with the rotational crank, the rotational crank rotates in cycles creating mechanical energy.

System and method for controlling shutoff valves of compressed natural gas fuel tanks in a vehicle

A control system for a vehicle includes a fuel tank selection module, a fuel depletion determination module, and a fuel pressure balancing module. The fuel tank selection module closes (N−M) of N shutoff valves of N compressed natural gas (CNG) fuel tanks, respectively, when an enable condition is met and the N shutoff valves have been open for a first predetermined period, wherein N is an integer greater than one and M is an integer less than N. The fuel depletion determination module determines whether the M CNG fuel tanks have provided a predetermined amount of fuel based a fuel parameter. The fuel pressure balancing module opens the N shutoff valves for the first predetermined period when the M CNG fuel tanks have provided the predetermined amount of fuel.

Method and system for powering an otto cycle engine using gasoline and compressed natural gas

Described are methods and systems for powering an Otto-cycle engine using gasoline and compressed natural gas (CNG). The Otto-cycle engine can be powered by determining a quantity of the gasoline and a quantity of the CNG to deliver to a cylinder of the engine during an engine cycle such that combustion within the cylinder occurs at a pre-determined air-fuel ratio; delivering the quantity of the gasoline to the cylinder via a gasoline injector and delivering the quantity of the CNG to the cylinder via a CNG injector such that the gasoline and the CNG combust during the same combustion event; and combusting the gasoline and the CNG within the cylinder. Delivering CNG and gasoline to the cylinder using separate injectors allows the quantities of CNG and gasoline to vary in response to engine operating conditions, which allows the fuel mixture to be adjusted to satisfy engine power and emissions criteria.

Apparatus for Releasing a Flow Cross Section of a Gas Line

An apparatus is described for the controlled release of a flow cross section of a gas line which is connected to a combustion chamber of a gas engine. The apparatus has a check valve and a flexible device. The flexible device is provided for absorbing a force occurring as a result of a thermal expansion of the check valve.

Method and system for estimating fuel composition

Methods and systems are provided for operating a fuel system configured to deliver a gaseous fuel to an engine. Following tank refilling, the fuel composition is selectively updated based on fuel tank pressure, temperature, and air content data. When the engine is subsequently restarted, the fuel rail is primed for a duration based on the updated composition.

MOVING BODY

A fuel cell vehicle is provided that allows for filling as much fuel gas as possible. The vehicle includes a high-pressure tank, a communication system, a communicative filling ECU that selectively executes communicative filling that transmits a data signal from the communication system to the dispenser and allows hydrogen to be filled by way of the dispenser into the tank at a flowrate dependent on the pressure and the temperature; and non-communicative filling that does not transmit a data signal from the communication system and allows hydrogen to be filled at a predetermined flowrate. The ECU determines, while executing communicative filling, whether this communicative filling can be continued to be executed, and interrupts communicative filling and continues hydrogen filling by switching the filling method to non-communicative filling in response to having determined that continuation of communicative filling is not possible. 1. A moving body comprising:a storage vessel that stores a fuel gas;a pressure detection means for detecting a pressure inside of the storage vessel;a temperature detection means for detecting a temperature of the storage vessel;a transmitting means for externally transmitting a data signal generated based on the pressure and the temperature thus detected;a communication electric power supply means for providing an electric power source that supplies electric power to the transmitting means; anda control means for selectively executing, as a method of filling fuel gas from an external supply device to the storage vessel, communicative filling that transmits the data signal from the transmitting means to the supply device and allows the fuel gas to be filled by way of the supply device into the storage vessel at a flowrate dependent on the pressure and the temperature; and non-communicative filling that allows the fuel gas to be filled by the supply device into the storage vessel at a predetermined flowrate,wherein the control means ...

Fuel gas supply system of gas engine

The present invention provides a fuel gas supply system of a gas engine capable of supplying to a fuel gas supply unit a fuel gas of constant pressure which fluctuates little. In a fuel gas supply system, a high-pressure tank and a gas injector are connected to each other by a supply passage, and an electromagnetic pressure regulating valve is provided on the supply passage. The electromagnetic pressure regulating valve is configured to regulate the pressure of the gas, flowing through the supply passage, to pressure corresponding to a current supplied to the electromagnetic pressure regulating valve. The gas pressure downstream of the electromagnetic pressure regulating valve is detected by a low-pressure-side pressure sensor. A controller is electrically connected to the electromagnetic pressure regulating valve. The controller controls the current supplied to the electromagnetic pressure regulating valve such that pressure detected by the low-pressure-side pressure sensor becomes predetermined target pressure.

Gas Engine System with Detection Function of Abnormality Occurrence of Gas Pressure Detection Mechanism

A gas engine system has a control unit including: a first determination section for determining, as a first determination, whether the gas pressure is a low pressure less than a predetermined pressure, while the control device recognizes the gas valve is closed; a second determination section for determining, as a second determination, whether the gas pressure is a high pressure equal to or more than the predetermined pressure, while the control device recognizes that the gas valve is open, if the first determination determines the gas pressure is the low pressure; a start-up section for performing the first and second determinations before start of engine operation when receiving a start-up command; and an operation start section for opening the valve and starting the engine, if the first determination determines the gas pressure is the low pressure, and if the second determination determines the pressure is the high pressure.

Approach for controlling fuel flow with alternative fuels

A fuel pump temperature is regulated by selectively directing liquid fuel to an expansion section to evaporate the liquid fuel and create a drop in temperature to thermally cool the fuel pump.

Air supply device of gas engine

An air supply device of a gas engine having a turbocharger includes a first intake passage configured to guide the mixture of outdoor air and unpurified gas into the turbocharger, a second intake passage configured to guide indoor air into the turbocharger, a filter configured to remove a solid impurity in the unpurified gas which is disposed in the first intake passage, a first damper capable of opening and closing the first intake passage disposed on the downstream side of the filter in the first intake passage, a heating unit for heating the indoor air disposed in the second intake passage, a second damper capable of opening and closing the second intake passage disposed on the downstream side of the heating unit in the second intake passage, and a damper control device configured to control the opening degree of each of the first and second dampers.

Gaseous fuel rail depressurization during inactive injector conditions

Methods and systems are provided for depressurizing a fuel pressure regulator during engine cold start and varying fuel injection pressure after cold start in a gaseous-fueled vehicle. A mechanical pressure regulator may be modified to include valves which may be controlled to depressurize a reference chamber of the regulator when gaseous fuel injection is inactive (e.g., before and during cold start), and to regulate the pressure of gaseous fuel to varying pressures based on electronic pressure feedback and engine operating conditions when gaseous fuel injection is active. In one example, the pressure in the reference chamber of a pressure regulator may be varied by controlling valves to flow gaseous fuel into the reference chamber, and then controlling the valves to exhaust the gaseous fuel from the reference chamber, for example to a fuel vapor storage canister.

Two step metering solenoid for multi-physics fuel atomizer

A metering system for a fuel atomizer includes a housing, first and second metering members, and at least one solenoid. The housing includes a mixing chamber. The first metering member is operable to control flow of oxidizer to the mixing chamber. The second metering member is arranged coaxial with the first metering member and operable to control flow of fuel to the mixing chamber. The at least one solenoid is configured to operate at least one of the first and second metering members.

End-position-monitoring of a gas injector

The invention relates to a method for checking whether an electromagnetically actuated gas injector ( 1 ) arranged in an internal combustion engine between a fuel source and a combustion chamber is in the closed end position thereof. According to said method, an electric test voltage is applied to the gas injector ( 1 ) and the discharge current (I) generated by the electric test voltage is measured.

METHOD AND SYSTEM FOR ESTIMATING FUEL SYSTEM INTEGRITY

Methods and systems are provided for operating a fuel system configured to deliver a gaseous fuel to an engine. While the engine is shutdown, diagnostic routines may be performed to identify fuel system leaks or breaches. When the engine is subsequently restarted, fuel rail pre-priming is adjusted based on the presence of fuel system leaks. 1. A method for an engine operating on a gaseous fuel , comprising:indicating fuel system degradation based on a change in each of a fuel rail pressure and a fuel tank pressure over a duration while the engine is shutdown; andresponsive to the indication, disabling pre-priming on a subsequent engine restart,wherein the gaseous fuel is a fuel that is in gaseous form at atmospheric conditions.2. The method of claim 1 , wherein the gaseous fuel is an LPG fuel.3. The method of claim 1 , wherein an electronic controller is powered up over the duration while the engine is shutdown to estimate each of the fuel rail pressure and the fuel tank pressure.4. The method of claim 1 , wherein the indicating includes claim 1 ,indicating a first, gross leak in the fuel system based on a difference between the fuel rail pressure and the fuel tank pressure being lower than a first threshold after a first shorter duration while the engine is shutdown; andindicating a second, small leak in the fuel system based on a difference between the fuel rail pressure and barometric pressure being lower than a second threshold after a second longer duration while the engine is shutdown.5. The method of claim 1 , wherein the indicating includes claim 1 , indicating a first claim 1 , gross leak in the fuel system based on a ratio of the fuel tank pressure to the fuel rail pressure after a first shorter duration while the engine is shutdown; andindicating a second, small leak in the fuel system based on a ratio of the fuel rail pressure to barometric pressure after a second longer duration while the engine is shutdown.6. The method of further comprising claim 1 , ...

COMBUSTION GAS INJECTOR ASSEMBLY AND METHOD

The invention relates to a combustion gas injector assembly () comprising a combustion gas injector () having groups () of combustion gas nozzle openings distributed around the periphery, each group having at least one combustion gas nozzle opening (), a combustion gas nozzle valve member () of the combustion gas injector (), which member can be controlled in the open position and closed position, is associated with each group () of combustion gas nozzle openings, in order to selectively discharge the combustion gas via the at least one combustion gas nozzle opening (). The combustion gas injector assembly () is configured to control the combustion gas nozzle valve members () successively with a predetermined time offset (T) into the closed position. 1. A combustion gas injector assembly comprising a combustion gas injector , which has combustion gas nozzle opening groups distributed over a circumference , each of which has at least one combustion gas opening , wherein a respective combustion gas nozzle opening group is dedicated to a combustion gas nozzle valve element of the combustion gas injector that can be closed and opened for selective combustion gas injection via its at least one combustion gas nozzle opening , wherein the combustion gas injector assembly is configured to successively close the combustion gas nozzle valve elements with a predetermined time offset.2. The combustion gas injector assembly of claim 1 , wherein the combustion gas injector assembly is configured to successively close the combustion gas nozzle valve elements along the circumference with the predetermined time offset.3. The combustion gas injector assembly of claim 1 , wherein the combustion gas injector assembly is configured to successively open the combustion gas nozzle valve elements with a predetermined opening time offset.4. The combustion gas injector assembly of claim 1 , wherein the combustion gas injector assembly is configured to set the predetermined time offset to ...

METHOD FOR CONTROLLING LOW-PRESSURE FUEL PUMP AND FUEL SUPPLY SYSTEM THEREFOR

A method of controlling a low-pressure fuel pump may include: identifying a fuel consumption amount of the low-pressure fuel pump in response to a feedforward fuel control; determining a motor driving base duty based on the fuel consumption amount; and identifying a target fuel pressure based on the pressure of fuel. 1. A method of controlling a low-pressure fuel pump , the method comprising:identifying a fuel consumption amount of the low-pressure fuel pump in response to a feedforward fuel control;determining a motor driving base duty based on the fuel consumption amount; andidentifying a target fuel pressure based on a pressure of fuel.2. The method according to claim 1 , wherein identifying the fuel consumption amount and the target fuel pressure are performed through a controller area network (CAN) communication.3. The method according to claim 1 , wherein determining the motor driving base duty is performed by a feedforward controller claim 1 , wherein the fuel consumption amount is based on a flow rate signal of injected fuel that is received by the feedforward controller is identified claim 1 , and then a value of the motor driving base duty is generated.4. The method according to claim 1 , wherein identifying the target fuel pressure is performed based on a fuel temperature model.5. The method according to claim 1 , wherein identifying the fuel consumption amount of the low-pressure fuel pump comprises:measuring an actual pressure of fuel;determining a correction duty for correcting driving of a motor based on the measured actual pressure and the target fuel pressure of the fuel;calculating a motor driving duty based on a correction amount;determining a final driving duty based on a correction of an output; anddriving the motor based on the final driving duty.6. The method according to claim 5 , wherein measuring the actual pressure of fuel is performed by a pressure sensor.7. The method according to claim 5 , wherein in determining the correction duty ...

MONITORING THE FUNCTION OF SOLENOID VALVES FOR FUEL INJECTION SYSTEMS

The invention relates to a method () for operating a solenoid valve () for metering a fuel () in a fuel injection system (). The solenoid valve can be actuated against a restoring force () by an electromagnet (), wherein •the time curve l(t) of the current I flowing through the electromagnet () and/or the time curve U(t) of the voltage U applied to the electromagnet () are detected during at least one opening process of the solenoid valve (). The opening time tand the closing time tof the solenoid valve () are evaluated () from the time curve I(t) and/or U(t), and the actual opening duration T=t−tof the solenoid valve () is compared () with a reference value Tand/or •the mass flow dm/dt flowing through the solenoid valve () is detected () and compared () with a reference value Mduring at least one opening process of the solenoid valve (); and/or a leakage dm′/dt of fuel () through the solenoid valve () is detected () in the closed state of the solenoid valve (). The invention also relates to a corresponding controller (), a fuel injection system (), and a computer program product. 11001231211. A method () for operating a solenoid valve () for metering a fuel () in a fuel injection system () , wherein the solenoid valve is configured to be actuated counter to a return force () by an electromagnet () , characterized in that the method comprising:{'b': 1', '11', '11, 'detecting, at at least one opening of the solenoid valve (), either or both of a temporal profile I(t) of a current I flowing through the electromagnet () and a temporal profile U(t) of a voltage U applied to the electromagnet ();'}{'b': '1', 'evaluating, from either or both of the temporal profile I(t) and the temporal profile U(t), an opening time tON and a closure time tOFF of the solenoid valve ();'}{'b': '1', 'comparing an actual opening duration TT=tOFF−tON of the solenoid valve ().'}210011. The method () as claimed in claim 1 , the method further comprising evaluating a degree of wear W of the ...

System and Method For Managing a Volatile Organic Compound Emission Stream

A Volatile Organic Compound (VOC) mitigation system employs a combination of technologies coupling VOC laden exhaust with a reciprocating engine and generator system (Combined Heat & Power (CHP) System) with heat recovery to destroy the VOC emissions and generate electric power and useful thermal energy.

Lube Oil Controlled Ignition Engine Combustion

In certain embodiments, Lube Oil Controlled Ignition (LOCI) Engine Combustion overcomes the drawbacks of known combustion technologies. First, lubricating oil is already part of any combustion engine; hence, there is no need to carry a secondary fuel and to have to depend on an additional fuel system as in the case of dual-fuel technologies. Second, the ignition and the start of combustion rely on the controlled autoignition of the lubricating oil preventing the occurrence of abnormal combustion as experienced with the Spark Ignition technology. Third, LOCI combustion is characterized by the traveling of a premixed flame; hence, it has a controllable duration resulting in a wide engine load-speed window unlike the Homogeneous Charge Compression Ignition technology where the engine load-speed window is narrow. Adaptive Intake Valve Closure may be used to control in-cylinder compression temperature to be high enough to realize the consistent auto ignition of the lubricating oil mist. 1. An internal combustion engine comprising: a cylinder comprising a liner and a cylinder head;', 'a piston top movably disposed within the cylinder to form a combustion volume;', 'a pre-mixed air-fuel mixture in the combustion volume; and', 'a mist of lubricating oil present in the combustion volume;, 'a combustion chamber comprisingwherein the pre-mixed air-fuel mixture is burnt as a result of auto-ignition of the mist of lubricating oil present in the combustion volume;wherein a flow velocity approaching the cylinder head and liner is between 10 and 20 m/s;wherein a lambda value approaching the cylinder head and liner is lower than 1.9; andwherein the air-fuel mixture has a temperature greater than 800 K approaching the cylinder head and liner.2. The internal combustion engine of : a central squish portion substantially orthogonal to a longitudinal axis of the cylinder; and', 'a sloped outer portion disposed radially outward of the central squish portion;, 'wherein the piston top ...

Internal combustion engine-reformer installation

A method of operating an internal combustion engine-reformer installation having an internal combustion engine and a reformer, includes predetermining at least one parameter of the internal combustion engine, calculating a desired amount of fuel for the reformer on the basis of the at least one parameter, feeding the desired amount of fuel to the reformer, reforming fuel to give a synthesis gas in the reformer, and feeding the synthesis gas to the internal combustion engine. A synthesis gas pressure of the synthesis gas downstream of the reformer is measured, and the synthesis gas pressure is taken into consideration when calculating the desired amount of fuel.

Method and device for controlling an internal combustion engine

A method for starting an internal combustion engine in which fuel is injected directly into the combustion chamber using a multiple injection before an initial ignition of a fuel/air mixture, the fuel being injected directly into the combustion chamber during an intake stroke using a first injection and using a second multiple injection, the fuel being injected directly into the combustion chamber during a compression stroke.

Auxiliary chamber gas supplying device for gas engine

In an auxiliary chamber gas supplying device for a gas engine including an auxiliary chamber gas supply path through which fuel gas is supplied to an auxiliary chamber, the auxiliary chamber gas supply path is connected to a fuel gas supply source through a solenoid valve, and when the solenoid valve is opened, the fuel gas, in an amount corresponding to an opened period of the solenoid valve, is supplied from the fuel gas supply source to the auxiliary chamber through the auxiliary chamber gas supply path, and the opened period of the solenoid valve is set in such a manner that a predetermined amount of fuel gas is supplied to the auxiliary chamber, and a restriction unit that extends the opened period of the solenoid valve is formed in the auxiliary chamber gas supply path.

Compressed Gas Capture and Recovery System

A method and system for recycling permeated gas is disclosed. A container encapsulating a pressure vessel defines a containment volume. Gas permeating through the pressure vessel is captured in the containment volume. When a sensor detects a threshold level of permeated gas captured within the containment volume, a control module sends a command to open a purge valve. The open purge valve allows permeated gas captured within the containment volume to be supplied to an engine, a repressurization unit, or a secondary container. 1. A method of recycling permeated gas , the method comprising: wherein the permeated gas escapes from a pressure vessel supplying compressed gas to an engine through a main fuel line, and', 'wherein the container encapsulates the pressure vessel;, 'capturing permeated gas in a containment volume defined by a container,'}detecting, using a sensor, a threshold level of permeated gas captured within the containment volume of the container; andbased on detecting the threshold level of permeated gas, supplying the permeated gas from the containment volume to the engine, wherein supplying the permeated gas includes sending a command, from a control module, to modify a position of a purge valve.2. The method of claim 1 , wherein the container comprises a gaseous barrier encapsulating the pressure vessel.3. The method of claim 1 , wherein the pressure vessel comprises a chain of alternating main vessel portions having a first diameter and intermediate portions having a second diameter smaller than the first diameter.4. The pressure vessel of claim 3 , wherein the main vessel portions have at least one of an elongated cylindrical shape claim 3 , an ovoid shape claim 3 , and a spherical shape.5. The pressure vessel of claim 3 , wherein the main vessel portions include an exterior reinforcing layer.6. The method of claim 3 , wherein the container defines an interstitial space between the alternating main vessel portions of the pressure vessel to capture ...

NATURAL GAS FUEL REFORMER CONTROL FOR LEAN BURN GAS ENGINES

A reformer system may include a reformer device having a fuel inlet, an air inlet and a gas outlet, a first valve set coupled to the fuel inlet and configured to selectively supply a reformer fuel flow from an engine fuel flow to the fuel inlet, a second valve set coupled to the air inlet and configured to selectively supply a reformer air flow from a compressor outlet air flow to the air inlet, and a controller in electrical communication with the first valve set and the second valve set. The controller may determine a target reformer fuel flow based on a target gas flow, determine a target reformer air flow based on the reformer fuel flow and a target air-to-fuel ratio, adjust the reformer fuel flow according to the target reformer fuel flow, and adjust the reformer air flow according to the target reformer air flow. 1. A reformer system for a gas engine , comprising:a reformer device having a fuel inlet, an air inlet and a gas outlet;a first valve set coupled to the fuel inlet and configured to selectively supply a reformer fuel flow from an engine fuel flow to the fuel inlet;a second valve set coupled to the air inlet and configured to selectively supply a reformer air flow from a compressor outlet air flow to the air inlet; anda controller in electrical communication with the first valve set and the second valve set, the controller being configured to determine a target reformer fuel flow based on a target gas flow, determine a target reformer air flow based on the reformer fuel flow and a target air-to-fuel ratio, adjust the reformer fuel flow according to the target reformer fuel flow, and adjust the reformer air flow according to the target reformer air flow.2. The reformer system of claim 1 , wherein the reformer device includes one or more of a sulfur trap configured to treat the engine fuel flow claim 1 , a mixer configured to mix the engine fuel flow and the compressor outlet air flow claim 1 , a heater configured to heat the engine fuel flow and the ...

FUEL CUTOFF VALVE

A fuel cutoff valve comprises a casing having a primary valve chamber and a secondary valve chamber, a primary valve mechanism housed in the primary valve chamber, and a secondary valve mechanism housed in the secondary valve chamber. The casing has a first communication path that connects the inside of the fuel tank and the primary valve chamber, and a second communication path that connects the primary valve chamber and the secondary valve chamber, due to the differential pressure between the tank internal pressure and the primary valve chamber, by the fuel in the fuel tank flowing into the primary valve chamber through the first communication path, a connection conduit is closed by the primary valve mechanism. When the fuel level inside the fuel tank reaches a second fuel level, the second communication path is closed by the rising of the secondary valve mechanism. 1. A fuel cutoff valve that opens and closes a connection conduit connecting a fuel tank and the outside , the fuel cutoff valve comprising:a casing that includes a primary valve chamber connected to the connection conduit, and a secondary valve chamber disposed under the primary valve chamber;a primary valve mechanism that is housed in the primary valve chamber and rises and falls according to a fuel level in the primary valve chamber; anda secondary valve mechanism that is housed in the secondary valve chamber and rises and falls according to a fuel level in the secondary valve chamber,wherein the casing includes a first communication path connecting the fuel tank and the primary valve chamber, and a second communication path connecting the primary valve chamber and the secondary valve chamber,the casing and the primary valve mechanism are configured such that the primary valve mechanism closes the connecting conduit by the fuel in the fuel tank entering the primary valve chamber through the first communication path due to a differential pressure between an internal pressure of the tank and a ...

PRECOMBUSTION-CHAMBER TYPE GAS ENGINE AND OPERATION CONTROL METHOD OF SAME

A precombustion-chamber type gas engine, comprising includes: a check valve disposed in the precombustion-chamber gas supply passage and configured to block a backflow of fuel gas from a precombustion chamber; a supply pressure control valve which is disposed on an upstream side of the check valve in the precombustion-chamber gas supply passage and which is capable of adjusting a pressure of the fuel gas to be supplied to the precombustion chamber; a torch strength information acquisition device configured to obtain torch strength information correlated to strength of a torch from the injection nozzle, on the basis of a pressure in the main chamber and a pressure in the precombustion chamber; a precombustion-chamber gas supply amount calculation device configured to calculate an amount of the fuel gas to be supplied to a precombustion-chamber gas supply amount, on the basis of the torch strength information and correlation information representing a correlation between the torch strength information, a thermal efficiency, and the precombustion-chamber gas supply amount; and a precombustion-chamber gas supply pressure control device configured to control the supply pressure control valve on the basis of the precombustion-chamber gas supply amount calculated by the precombustion-chamber gas supply amount calculation device. 1. A precombustion-chamber type gas engine , comprising:a main chamber defined between a piston and a cylinder head;a precombustion chamber which is in communication with the main chamber via an injection nozzle;a precombustion-chamber gas supply passage capable of supplying fuel gas to the precombustion chamber from a supply source of the fuel gas not via the main chamber;a check valve disposed in the precombustion-chamber gas supply passage;a supply pressure control valve which is disposed on an upstream side of the check valve in the precombustion-chamber gas supply passage and which is capable of adjusting a pressure of the fuel gas to be ...

Mixture formation device for a gas engine and gas engine

The invention relates to a mixture formation device for an internal combustion engine that is operated with a combustible gas, preferably compressed natural gas (CNG). The mixture formation device comprises a combination of a quantity regulator, a gas mixer, a flow guide element to recover pressure as well as a connection capability for recirculating the exhaust gas of the internal combustion engine. Owing to the mixture formation device according to the invention, a gas tank can be emptied down to a relatively low pressure of approximately 2 bar, whereby an excellent mixture formation is achieved over the entire speed and load ranges of the internal combustion engine. It is provided that, owing to the mixture formation device according to the invention, the installation space requirements as well as the production costs can be reduced in comparison to prior-art solutions. Moreover, an internal combustion engine operated with a combustible gas, especially natural gas (CNG), is being put forward which has such a mixture formation device in its intake tract.

Split Cycle Engine and Method of Operation

Split cycle engine that runs on gaseous fuels such as natural gas and synthesis gas (syngas) and to a method of operating the same. The engine includes a first compression chamber for compressing the gaseous fuel, means for supplying the gaseous fuel to the first compression chamber at a level of concentration that prevents predetonation of the fuel during compression, a second compression chamber for compressing air, a combustion chamber in which the compressed fuel and air are combined to reduce the concentration of the fuel to a level that allows the fuel to burn and expand in the combustion chamber, and an expansion chamber having an output member which is driven by expanding gas from the combustion chamber. Turbochargers or blowers pressurize and increase the volume of the fuel and air delivered to the respective compression chambers, and the concentration of the fuel is progressively reduced by the injection of air at spaced intervals as the fuel travels toward the compression chamber. 1. A split cycle engine for burning gaseous fuel , comprising: a first compression chamber for compressing the gaseous fuel , means for supplying the gaseous fuel to the first compression chamber at a level of concentration that prevents predetonation of the fuel during compression , a second compression chamber for compressing air , a combustion chamber in which the compressed fuel and air are combined to reduce the concentration of the fuel to a level that allows the fuel to burn and expand in the combustion chamber , and an expansion chamber having an output member which is driven by expanding gas from the combustion chamber.2. The engine of including means for pressurizing the gaseous fuel and the air to increase the amounts of fuel and air supplied to the compression chambers.3. The engine of including means for progressively reducing the concentration level of the gaseous fuel before the fuel is delivered to the compression chamber.4. The engine of wherein the fuel has a ...

DEVICE FOR PREVENTING BACK FIRE OF ENGINE AND METHOD USING THE SAME

A method for preventing back fire of an engine by a device for preventing back fire of an engine, may include monitoring operating information of the engine; determining whether the back fire occurs by using the operating information of the engine; and controlling an ignition timing to be retarded when the back fire occurs as the determination result. 1. A method for preventing back fire of an engine by a device for preventing the back fire of the engine , the method comprising:monitoring operating information of the engine;determining whether the back fire occurs by using the operating information of the engine; andcontrolling an ignition timing to be retarded when the back fire occurs as the determination result.2. The method of claim 1 , wherein the operating information of the engine includes at least one of an RPM of the engine claim 1 , an intake pressure claim 1 , an intake temperature claim 1 , an opening level of a throttle valve claim 1 , and a control current value of the throttle valve.3. The method of claim 1 , wherein the determining of whether the back fire occurs includes:comparing the intake pressure with a predetermined pressure value,comparing the intake temperature with a predetermined temperature value when the intake pressure is more than a predetermined maximum pressure value or the intake pressure is less than a predetermined minimum pressure value, anddetermining that the back fire occurs when the intake temperature is more than a maximum temperature value for a predetermined time or more.4. The method of claim 1 , wherein the determining of whether the back fire occurs includes:comparing the opening level of the throttle valve with a reference opening level,comparing the control current value of the throttle valve with a predetermined value when the opening level of the throttle valve is more than the reference opening level, anddetermining that the back fire occurs when the control current value of the throttle valve is more than the ...

GAS ENGINE HEAT PUMP

The present disclosure relates to a gas engine heat pump including: an engine which burns a mixed air of air and fuel; a first charger which compresses the mixed air and supplies to the engine; a first exhaust flow path which is connected to the engine, and through which exhaust gas discharged from the engine flows; and a second charger which is driven by the exhaust gas branched from the first exhaust flow path to a second exhaust flow path, and compresses the exhaust gas discharged from the engine and supplies the compressed exhaust gas to the engine, thereby reducing the emission of nitrogen oxide by recirculating the exhaust gas without additional power consumption. 1. A gas engine heat pump comprising:an engine which burns a mixed air of air and fuel;a first charger which compresses the mixed air and supplies to the engine;a first exhaust flow path which is connected to the engine, and through which exhaust gas discharged from the engine flows; anda second charger which is driven by the exhaust gas branched from the first exhaust flow path to a second exhaust flow path, and compresses the exhaust gas discharged from the engine to supply to the engine.2. The gas engine heat pump of claim 1 , wherein the first charger comprises:a first compressor for compressing the mixed air to flow into the engine; anda first turbine which is installed in the first exhaust flow path and receives the exhaust gas passing through the first exhaust flow path to drive the first compressor.3. The gas engine heat pump of claim 1 , wherein the second charger comprises:a second turbine which receives the exhaust gas branched from the first exhaust flow path to the second exhaust flow path and drives the second charger; anda second compressor which compresses the exhaust gas that passed through the first turbine and/or the second turbine to flow into the engine.4. The gas engine heat pump of claim 3 , further comprising:a first bypass valve which is installed in the second exhaust flow ...

CONTROL OF AN ENGINE-DRIVEN GENERATOR TO ADDRESS TRANSIENTS OF AN ELECTRICAL POWER GRID CONNECTED THERETO

A technique for providing electric power to an electric power utility grid includes driving an electric power alternator coupled to the grid with a spark-ignited or direct injection internal combustion engine; detecting a change in electrical loading of the alternator; in response to the change, adjusting parameters of the engine and/or generator to adjust power provided by the engine. In one further forms of this technique, the adjusting of parameters for the engine includes retarding spark timing and/or interrupting the spark ignition; reducing or retarding direct injection timing or fuel amount and/or interrupting the direct injection; and/or the adjusting of parameters for the generator including increasing the field of the alternator or adding an electrical load. 1. A method comprising:driving an electric power generator, which is electrically connected to a switchgear, with a spark-ignited internal combustion engine, to provide electric power to a utility power grid;determining a low voltage condition of the utility power grid due to changes in electrical loading; andin response to the low voltage condition, maintaining connection and synchronization between the electric power generator and the utility grid through the low voltage condition, including maintaining a fueling state of the engine which existed prior to detecting the low voltage condition while changing spark ignition timing of the engine to reduce power provided by the engine, thereby increasing torque on the electric power generator so as to balance torque on the engine and the electric power generator.2. The method of claim 1 , wherein the engine is of a multiple cylinder claim 1 , reciprocating piston type and the changing of spark ignition timing includes retarding the spark ignition timing of the engine.3. The method of claim 1 , wherein the engine is of a multiple cylinder claim 1 , reciprocating piston type and the changing of spark ignition timing includes inhibiting ignition for at least ...

METHOD OF CONTROLLING GAS ENGINE AND GAS ENGINE DRIVE SYSTEM

A method of controlling a gas engine connected to a turbocharger including a compressor and a turbine includes: performing a knocking control operation of optimizing an ignition timing as a steady operation; and in a case where a load of the gas engine increases during the steady operation, when a degree of increase in the load is relatively small, gradually increasing an actual fuel injection amount while keeping the ignition timing, and when the degree of increase in the load is relatively great, retarding the ignition timing and then gradually increasing the actual fuel injection amount. 1. A method of controlling a gas engine connected to a turbocharger including a compressor and a turbine , the method comprising:performing a knocking control operation of optimizing an ignition timing as a steady operation; andin a case where a load of the gas engine increases during the steady operation, when a degree of increase in the load is relatively small, gradually increasing an actual fuel injection amount while keeping the ignition timing, and when the degree of increase in the load is relatively great, retarding the ignition timing and then gradually increasing the actual fuel injection amount.2. The method of controlling a gas engine according to claim 1 , whereinthe case where the load increases is a case where a necessary fuel injection amount increases,when the degree of increase in the load is relatively small is when an increase speed of the necessary fuel injection amount is less than a threshold, andwhen the degree of increase in the load is relatively great is when the increase speed of the necessary fuel injection amount is greater than the threshold.3. The method of controlling a gas engine according to claim 1 , whereinthe case where the load increases is a case where an actual rotational speed of the gas engine decreases from a target rotational speed,when the degree of increase in the load is relatively small is when a deviation between the actual ...

Leak Detection in a Hydrogen Fuelled Vehicle

The invention concerns a method of detecting hydrogen leakage from a power plant installation using hydrogen as fuel. A rate of supply of hydrogen to the power plant (“the supply rate”) is determined. A rate of change of mass of hydrogen in the tank arrangement (“the rate of mass change”) is determined. The supply rate is compared with the rate of mass change to determine whether leakage is taking place. 1. A method of detecting hydrogen leakage from a power plant which is wholly or partially fuelled by hydrogen supplied to the power plant from a tank arrangement , the method comprising:determining a rate of supply of hydrogen to the power plant (“the supply rate”);determining a rate of change of mass of hydrogen in the tank arrangement (“the rate of mass change”); andcomparing the supply rate with the rate of mass change to determine whether leakage is taking place.2. The method as claimed in claim 1 , wherein determining the rate of mass change comprises sensing temperature and pressure in a tank of the tank arrangement.3. The method as claimed in claim 2 , wherein the tank arrangement further includes at least one hydrogen supply line leading from the tank to the power plant claim 2 , and in which the method further comprises sensing temperature and pressure in the supply line claim 2 , the rate of mass change being based on the sum of a rate of mass change in the tank and a rate of mass change in the supply line.4. The method as claimed in claim 3 , wherein the hydrogen supply line includes a pressure regulator and the method further comprises sensing temperature and pressure at two points in the supply line claim 3 , one upstream of the pressure regulator and the other downstream of the pressure regulator.5. The method as claimed in claim 1 , wherein the power plant is an internal combustion engine having at least one fuel injector and the method comprises determining the rate of supply of hydrogen to the engine based on engine operating parameters including a ...

METHOD AND DEVICE FOR OPERATING A GAS INTERNAL COMBUSTION ENGINE

A gas internal combustion engine, having a gas mixer, an intake section and an engine with cylinders. A fuel mixture having a charging mixture is fed to the engine. The engine is operated in the gas mode with gas as the fuel in the charging mixture. By an input mixture portion, assigned to an earlier mixture state, of a gas/air mixture, an output mixture portion, assigned to a later mixture state, of the gas/air mixture is determined, The determination is carried out by an intake section model which serves as a basis of a computing model for the intake section. The output mixture portion of the gas/air mixture is determined an engine feed, the input mixture portion of the output mixture portion is determined over a number of intermediate states of the mixture portion in a number of assigned volumes of the intake section. The intake mixture portion of a gas/air mixture is determined at the gas mixer, and an air stream and/or gas stream is set at the gas mixer in accordance with the input mixture portion. 114-. (canceled)15. A method for operating a gas internal combustion engine having a gas mixer , an intake path and an engine having a number of cylinders , the method comprising the steps of:supplying the engine with a fuel mixture comprising a charge mixture and operating the engine in gas operation with gas as fuel in the charge mixture;determining an output mixture fraction, assigned to a later mixture state, of the gas-air mixture by an input mixture fraction, assigned to at least one earlier mixture state, of a gas-air mixture, wherein the determining takes place by an intake path model serving as a basis for a computational model for the intake path, wherein the output mixture fraction of the gas-air mixture is determined at an engine supply;determining the input mixture fraction from the output mixture fraction via a number of intermediate states of the mixture fraction in a number of assigned volumes of the intake path, wherein the input mixture fraction of ...

SENSOR FOR SPECTROMETRIC ANALYSIS OF A VARIABLE-PRESSURE GASEOUS FUEL FOR AUTOMOTIVE VEHICLE

Disclosed is a sensor for spectrometric analysis of a variable-pressure gaseous fuel for automotive vehicle intended to be mounted in the flow circuit for the fuel linking the fuel tank to the engine of the vehicle. The sensor includes a circulation pipe for the variable-pressure gaseous fuel, a sliding guidance tube for an optical flux and a unit for displacement of the sliding guidance tube, on the basis of the variable-pressure gaseous fuel tapped off from the circulation pipe, so as to adapt the distance separating the first window from the second window as a function of the variation in pressure of the variable-pressure gaseous fuel circulating in the circulation pipe. 288111212. The sensor as claimed in claim 1 , wherein the distal end (B) of the sliding guide tube () comprises a first ring () claim 1 , the first window () being fitted in the center of said first ring ().3826162024. The sensor as claimed in claim 1 , wherein the sliding guide tube () comprises a wall () of cylindrical shape for retaining the compression spring () claim 1 , extending from the second ring () into the expansion space ().42822. The sensor as claimed in claim 1 , wherein the channel () for sampling variable-pressure gaseous fuel opens into the receiving space ().5213024321. The sensor as claimed in claim 1 , wherein the body () of the sensor () comprises an air flow channel () linking the expansion space () to the space () outside the sensor ().63428. The sensor as claimed in claim 1 , said sensor comprising a plurality of seals () positioned between the body () and the sliding guide tube ().71. A vehicle comprising at least one variable-pressure gaseous fuel tank claim 1 , at least one engine supplied with variable-pressure gaseous fuel claim 1 , a circuit for routing variable-pressure gaseous fuel from said tank to said engine claim 1 , and a spectrometric analysis sensor () as claimed in claim 1 , positioned in said routing circuit or in the tank in order to determine the ...

VARIABLE ENERGY IGNITION SYSTEMS, METHODS, AND APPARATUSES

A method of controlling an ignitor for a spark-ignition engine includes receiving, by a controller, at least one of fuel quality data regarding a fuel for the spark-ignition engine or a characteristic regarding the ignitor for the spark-ignition engine. The method additionally includes controlling, by the controller, an ignition energy characteristic of the ignitor in response to the at least one of the fuel quality data regarding the fuel or the characteristic regarding the ignitor for the spark-ignition engine. 1. A method , comprising:receiving, by a controller, at least one of fuel quality data regarding a fuel for a spark-ignition engine or a characteristic regarding an ignitor for the spark-ignition engine; andcontrolling, by the controller, an ignition energy characteristic of the ignitor in response to the at least one of the fuel quality data regarding the fuel or the characteristic regarding the ignitor for the spark-ignition engine.2. The method of claim 1 , wherein the characteristic regarding the ignitor comprises a condition of the ignitor claim 1 , the condition comprising at least one of an age of the ignitor claim 1 , a number of operating hours of the ignitor claim 1 , or a number of firing cycles of the ignitor.3. The method of claim 1 , wherein controlling the ignition energy characteristic of the ignitor comprises adjusting at least one of a spark current of the ignitor claim 1 , a spark voltage of the ignitor claim 1 , a spark duration for the ignitor claim 1 , or a current waveshape of the ignitor.4. The method of claim 1 , wherein controlling the ignition energy characteristic of the ignitor comprises adjusting a number of sparks generated by the ignitor within a single combustion cycle.5. The method of claim 1 , wherein receiving the at least one of the fuel quality data regarding the fuel comprises receiving at least one of a methane number or a lower heating value of the fuel claim 1 , and wherein the method further comprises comparing the ...

Methane safety systems for transport refrigeration units

A system comprising a refrigeration engine (132) and regulator (250, 350, 450, 550, 650) positioned within a housing (144, 244), the regulator (250, 350, 450, 550, 650) controlling fuel to the engine through a fuel line (354), a lock-off valve connected to the regulator (250, 350, 450, 550, 650) to shut off fuel supply through the regulator (250, 350, 450, 550, 650), a controller operably connected to the lock-off valve and/or the regulator (250, 350, 450, 550, 650), a guide (462, 562) positioned within the housing (144, 244) and proximate to the refrigeration engine (132), the regulator (250, 350, 450, 550, 650), and/or the fuel line (354) to direct gases leaking from the refrigeration engine (132), regulator (250, 350, 450, 550, 650), and/or at least one fuel line (354), and a methane sensor (566, 666A) positioned within the guide (462, 562) to detect the presence of methane within the guide (462, 562) that is directed by the guide (462, 562), the methane sensor (566, 666A) in communication with the controller and configured to transmit a signal to the controller when methane is detected by the methane sensor (566, 666A). The controller performs a safety action when the signal from the methane sensor (566, 666A) is received.

Gas internal combustion engine gas leak checking device and method for same

An object of the present invention is to provide a gas leakage checking device and a method for the same, for checking fuel-gas leakage of safety shutoff valves simply and securely by measuring a pressure in a fuel supply pipe. The gas-leakage checking device 8 includes a first safety shutoff valve 81 disposed in a fuel-gas supply pipe 89 of the gas internal combustion engine 1 for permitting or shutting off a flow of the fuel gas, a second safety shutoff valve 82 disposed on a downstream side of the first safety shutoff valve 81, a gas-leakage checking pipe 89 c branched from between the first and second safety shutoff valves 81, 82, a gas-discharge valve 83 disposed in the gas-leakage checking pipe 89 c and configured to discharge the fuel gas between the first and second safety shutoff valves 81, 82, a first pressure meter P 1 for detecting a pressure of the fuel gas in the gas-leakage checking pipe 89 c, and second pressure meters P 2, P 3 disposed on a downstream side of the second safety shutoff valve 82, for detecting the pressure of the fuel gas in the fuel-gas supply pipe 89.

System and Method For Managing a Volatile Organic Compound Emission Stream

A Volatile Organic Compound (VOC) mitigation system employs a combination of technologies coupling VOC laden exhaust with a reciprocating engine and generator system (Combined Heat & Power (CHP) System) with heat recovery to destroy the VOC emissions and generate electric power and useful thermal energy. 1. A system for mitigating volatile organic compounds (VOC) emissions generated as a by-product of a production process while producing energy therefrom , the system comprising:an exhaust system for expelling an exhaust stream as part of a production process, wherein the exhaust stream includes VOCs;a first VOC concentration detector located in a path of the expelled exhaust stream for determining a concentration of a VOC laden expelled exhaust stream and generating a first VOC concentration signal indicative thereof and performing at least one additional action in accordance with the VOC signal;a VOC concentrator, located in a path of the VOC laden expelled exhaust stream and prior to the combustion engine, for producing a concentrated VOC expelled exhaust stream;a combustion engine for receiving the concentrated VOC expelled exhaust stream and reducing the VOCs therein through combustion thereof;a fuel source for providing fuel to the combustion engine to be combined therein with the concentrated VOC expelled exhaust stream for combustion; andat least one generator coupled to the combustion engine for receiving a combusted product from the combustion engine and producing electric power therefrom.2. The system of claim 1 , wherein the at least one additional action is to pass the VOC laden expelled exhaust stream to the VOC concentrator when a determined concentration thereof is below a threshold level.3. The system of claim 1 , wherein the at least one additional action is to pass the VOC laden expelled exhaust stream directly to the combustion engine claim 1 , by-passing the VOC concentrator claim 1 , when a determined concentration thereof is above a threshold ...

FUEL INJECTION DEVICE OF ENGINE

A control device of an engine including a cylinder, a piston, a cylinder head, and a combustion chamber is provided, which includes intake and exhaust ports, a swirl control valve provided in an intake passage connected to the intake port, a fuel injection valve attached to the cylinder head to be oriented into the center of the combustion chamber in a plan view thereof, and having first and second nozzle ports, and a control unit. The control unit includes a processor configured to execute a swirl opening controlling module to output the control signal to the swirl control valve to have a given opening at which a swirl ratio inside the combustion chamber becomes 2 or above, and a fuel injection timing controlling module to output the control signal to the fuel injector to inject fuel at a given timing at which the swirl ratio becomes 2 or above. 1. A control device of an engine including a cylinder , a piston for reciprocating inside the cylinder along a center axis thereof , a cylinder head , and a combustion chamber formed by the cylinder , the piston , and the cylinder head , comprising:an intake port configured to introduce intake air into the combustion chamber;an exhaust port configured to discharge exhaust gas from the combustion chamber;a swirl control valve provided in an intake passage connected to the intake port;a fuel injection valve attached to the cylinder head, disposed to be oriented into the center of the combustion chamber in a plan view thereof, and having a first nozzle port with a nozzle port axis extending to the exhaust port side in the plan view and a second nozzle port with a nozzle port axis extending to the intake port side in the plan view; anda control unit connected to the fuel injection valve and the swirl control valve and configured to output a control signal to the fuel injection valve and the swirl control valve, respectively, the control unit including a processor configured to execute a swirl opening controlling module to ...

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 EFFICIENCY TURBOCHARGER WITH EGR SYSTEM

In accordance with one aspect of the present disclosure, a turbocharger includes a compressor having a compressor wheel, a turbine provided within a housing, and an exhaust gas recirculation (EGR) flow path. The EGR flow path includes a first fluid connection in the housing and located in proximity to the turbine, a second fluid connection located in proximity to a trailing edge of the compressor wheel, an EGR control valve disposed between the first fluid connection and the second fluid connection, the EGR control valve configured to selectively operate the turbocharger in a low-heat mode having an EGR up to 50% and an operational mode having an EGR rate typically less than 35%. 1. A turbocharger comprising:a compressor having a compressor wheel;a turbine provided within a housing; and a first fluid connection in the housing and located in proximity to the turbine;', 'a second fluid connection located in proximity to a trailing edge of the compressor wheel; and', 'an EGR control valve disposed between the first fluid connection and the second fluid connection, the EGR control valve configured to control an EGR rate., 'an exhaust gas recirculation flow path having2. The turbocharger of claim 1 , the EGR control valve further comprising:a valve position indicator configured to output a valve position of the EGR control valve; andan EGR pressure sensor configured to determine and output an exhaust gas pressure; wherein the turbocharger is configured to determine a turbocharger speed based at least in part on the valve position and the exhaust gas pressure.3. The turbocharger of claim 1 , wherein the second fluid connection is configured to direct an EGR flow toward a direction of a fresh air flow from the compressor wheel.4. The turbocharger of claim 1 , wherein the EGR control valve comprises a scoop valve claim 1 , the scoop valve having:a first surface with a predominantly flat surface configured to align with a housing wall when in a sealed position; anda second ...

Bi-fuel engine with increased power

A conventional gasoline engine is retrofitted and calibrated to operate as a bi-fuel engine using Hydrogen as the second fuel. When operated with Hydrogen, which typically leads to a reduction of engine output power, the engine is preferably operated in a charged mode and in a lean mode with the engine throttle kept in a wide open position during charged and lean mode operation resulting in a more efficient engine with a reduction of engine output power loss.

Dual fuel system having a damper

A dual fuel system for an engine is disclosed. The dual fuel system may have a first fuel supply providing a first fuel to the engine, and a second fuel supply providing a second fuel. The dual fuel system may also have a regulator configured to pass the second fuel from the second fuel supply to the engine, with the regulator also in fluid communication with the first fuel supply. The dual fuel system may further have a damper in fluid communication with the first fuel supply and an output of the regulator.

Air-Fuel Metering for Internal Combustion Reciprocating Engines

Methods for controlling an air-to-fuel (AFR) ratio in the metering of fuel to an operating internal combustion engine (ICE) are provided using software-implemented logic controls to enable the determination of one or more of a maximum-power AFR fiducial and a maximum-efficiency AFR fiducial. Control of the fuel delivered to achieve any desired AFT using the fiducial values and/or a known or derived power-AFR curve for the ICE, and pressures of 5 psi or less, without chemical or temperature sensing of the exhaust gas of the ICE. 1. A method of controlling the air-fuel ratio (AFR) of an operating internal combustion engine (ICE) , the ICE having a combustion chamber , at least an intake stroke and a combustion stroke , a speed controller to adjust a throttle to maintain a target rotational speed , and an air intake determination unit to determine an air intake parameter indicative of the amount of air inducted into the combustion chamber during an intake stroke , the method comprising: 1) operating the ICE under a constant load at a first AFR defining one of a rich mixture and a lean mixture;', '2) decreasing the AFR and determining a change in engine power output in response to the decrease in AFR;', '3) if the engine power output increases in response to the decrease in AFR, repeating step a2 until the engine power output decreases in response to the decrease in AFR;', '4) if the engine power decreases in response to the decrease in AFR in step a2, increasing the AFR and determining a change in engine power output in response to the increase in AFR;', '5) if the engine power increases in response to the increase in AFR in step a4, repeating the step of increasing the AFR and determining a change in engine power output in response thereto until the engine power decreases in response to an increase in AFR; and', '6) identifying the maximum-power AFR fiducial as the AFR at which any change in AFR results in a decrease in the power output of the engine;, 'a) determining ...

MULTIPLE GAS TANK ASSEMBLY WITH INDIVIDUAL PRESSURE MONITORING

This disclosure describes an assembly for gas (e.g., compressed natural gas) storage. The assembly includes multiple gas storage tanks, with each tank coupled to a separate sub-assembly that includes a pressure gauge, shutoff valve, and pressure relief device (PRD), providing for independent pressure monitoring, shutoff, and pressure relief for each of the tanks. 1. A gas storage assembly comprising: a pressure gauge that measures and displays the pressure in the respective gas storage tank;', 'a pressure relief device (PRD) that relieves pressure in the respective gas storage tank; and', 'a shutoff valve that controls a flow of gas to and from the respective gas storage tank., 'a plurality of gas storage tanks, each respective gas storage tank coupled to a respective sub-assembly including2. The assembly of claim 1 , further comprising:a cover that at least partly covers at least one side of the assembly, wherein the cover includes an opening to provide visibility to each respective pressure gauge.3. The assembly of claim 1 , wherein the gas is compressed natural gas.4. The assembly of claim 1 , wherein the assembly is attached to a tailgate of a refuse collection vehicle.5. The assembly of claim 1 , wherein the gas is a fuel for a refuse collection vehicle.6. The assembly of claim 1 , wherein the sub-assembly further comprises a supply line coupled to the respective gas storage tank and configured to supply a flow of gas to and from the respective gas storage tank.7. The assembly of claim 1 , wherein;the sub-assembly further comprises a vent line configured for venting gas from the respective gas storage tank; andthe pressure relief device is coupled to the vent line.8. The assembly of claim 1 , wherein the sub-assembly further comprises a port coupled to the respective gas storage tank claim 1 , wherein the port is configured to provide a flow of gas to the respective gas storage tank.9. A vehicle tank pressure control system comprising:multiple pressure gauges, ...

OPERATING A GASEOUS FUEL INJECTOR

Fuel injection accuracy of gaseous fuel injectors is important for efficient engine operation. However, the performance of the injectors varies from part to part and across their lifetime, and when an injector is under performing according to its specification it is often unknown what is causing the problem. An apparatus for operating a gaseous fuel injector in an engine comprises a mass flow sensor that generates a signal representative of the mass flow rate of the gaseous fuel in a supply conduit in the engine. A controller connected with the injector and the mass flow sensor is programmed to actuate the injector to introduce gaseous fuel into the engine; determine the actual mass flow rate of the gaseous fuel based on the signal representative of the mass flow rate; calculate a difference between the actual mass flow rate and a desired mass flow rate; and adjust at least one of on-time of the gaseous fuel injector and a magnitude of an injector activation signal by respective amounts based on the difference when the absolute value of the difference is greater than a predetermined value. 1. An apparatus for operating a gaseous fuel injector in an internal combustion engine comprising:a supply of gaseous fuel;a conduit delivering gaseous fuel to the gaseous fuel injector from the supply of gaseous fuel;a mass flow sensor associated with the conduit generating a signal representative of the mass flow rate of the gaseous fuel; and actuate the gaseous fuel injector to introduce gaseous fuel into the internal combustion engine;', 'determine the actual mass flow rate of the gaseous fuel based on the signal representative of the mass flow rate;', 'calculate a difference between the actual mass flow rate and a desired mass flow rate; and', 'adjust at least one of on-time of the gaseous fuel injector and a magnitude of an injector activation signal by respective amounts based on the difference when the absolute value of the difference is greater than a predetermined value ...

A METHOD AND A SYSTEM FOR DETERMINING THE SPECIFIC GAS CONSTANT AND THE STOICHIOMETRIC AIR FUEL RATIO OF A FUEL GAS FOR A GAS ENGINE

The present invention relates to a method for determining the specific gas constant and the stoichiometric air fuel ratio of a fuel gas for a gas engine. The method comprises keeping the pressure essentially constant in an inlet manifold of the gas engine, so that the pressure is not varying more than a pre-determined threshold. A first λ value is determined downstream the gas engine. The time period of gas injection into the inlet manifold is then changed. A second λ value downstream the gas engine is determined. The specific gas constant and the stoichiometric air fuel ratio of the fuel gas is then determined based on the determined first and second λ value. The present invention also relates to a system for determining the specific gas constant and the stoichiometric air fuel ratio of a fuel gas for a gas engine, a vehicle, and a computer program product. 1. A method for determining a specific gas constant and a stoichiometric air fuel ratio of a fuel gas for a gas engine , the method comprising:keeping a pressure essentially constant in an inlet manifold of the gas engine, so that the pressure is not varying more than a pre-determined threshold;determining a first λ value downstream the gas engine while the engine is operated at a first time period of gas injection into the inlet manifold;changing said first time period of gas injection into the inlet manifold to a second time period of gas injection into the inlet manifold;determining a second λ value downstream the gas engine after said changing of the time period of gas injection into the inlet manifold; anddetermining the specific gas constant and the stoichiometric air fuel ratio of the fuel gas based on said determined first and second λ value.2. The method according to claim 1 , further comprising:determining at least one of a temperature value in the inlet manifold of the gas engine and/or a pressure value in said inlet manifold of the gas engine,wherein said determining of the specific gas constant and ...

A METHOD AND A SYSTEM FOR ADAPTING ENGINE CONTROL OF A GAS ENGINE IN A VEHICLE

The present invention relates to a method for adapting engine control of a gas engine in a vehicle. The method comprises determining, during operation of the gas engine, the specific gas constant of a fuel gas for the gas engine. The method further comprises determining the stoichiometric air fuel ratio of the fuel gas for the gas engine. The control of the gas engine is adapted based on the determined specific gas constant and the determined stoichiometric air fuel ratio. The present invention also relates to a system for adapting engine control of a gas engine in a vehicle, to a vehicle, and to a computer program product. 1. A method for adapting engine control of a gas engine in a vehicle , the method comprising:determining, during operation of the gas engine, a specific gas constant of a fuel gas for the gas engine;determining a stoichiometric air fuel ratio of the fuel gas for the gas engine; andadapting a control of the gas engine based on the determined specific gas constant and the determined stoichiometric air fuel ratio.2. The method according to claim 1 , wherein said determining of the specific gas constant and/or the stoichiometric air fuel ratio is based on a determined time period of gas injection.3. The method according to claim 1 , further comprising performing measurements in the vehicle claim 1 , wherein said determining of the specific gas constant and/or said determining of the stoichiometric air fuel ratio is based on a result of said performed measurements.4. The method according to claim 3 , wherein said performed measurements comprise measuring a pressure value and a temperature value in the inlet.5. The method according to claim 3 , wherein said performed measurements comprise measuring a temperature value and/or a pressure value of the fuel gas upstream of a gas injector.6. The method according to anyone of claim 3 , wherein said performed measurements comprise measuring a λ value by means of a lambda sensor being provided downstream said ...

A GAS VALVE UNIT AND A METHOD OF PERFORMING A PRESSURE TEST TO A GAS VALVE UNIT

The disclosure relates to a gas valve unit having an enclosure provided with an inlet and an outlet, with an inner pipe arranged to extend from the inlet to the outlet via the enclosure forming a gas tight piping inside the enclosure, and an outer pipe arranged to open into the enclosure via an at least one opening. Walls of the inner pipe and the outer pipe form a space there between as a first volume, and the enclosure forms a space inside as a second volume, the first and second volumes being arrangeable in flow communication with each other via an opening in connection with the outer pipe. At least one blocking unit selectively blocks the at least one opening in connection with the outer pipe and the flow communication between the first volume and the second volume. 1. A gas valve unit , comprising:an enclosure provided with an inlet and an outlet, which inlet and outlet includes an inner pipe and an outer pipe, wherein the inner pipe is arranged to extend from the inlet to the outlet via the enclosure forming a gas tight internal piping inside the enclosure, and the outer pipe is arranged to open into the enclosure via at least one opening, wherein walls of the inner pipe and the outer pipe form a space there between, which space is a first volume, and the enclosure forms a space inside, which space is a second volume, and the first volume and the second volume are arrangeable in flow communication with each other via the at least one opening in connection with the outer pipe; andat least one blocking unit configured for selectively blocking and unblocking the at least one opening in connection with the outer pipe and the flow communication between the first volume and the second volume.2. A gas valve unit according to claim 1 , wherein the blocking unit comprises:a triggering system operable outside the enclosure.3. A gas valve unit according to claim 1 , wherein the blocking unit comprises:a triggering system configured to provide stored potential energy when ...

ENGINE SYSTEM

An engine system includes an engine having a combustion chamber, an intake gas passage through which air to be supplied to the combustion chamber flows, an exhaust gas passage through which exhaust gas generated from the combustion chamber flows, a reformer configured to reform the fuel to generate a reformed gas containing hydrogen, a gas supply passage through which air to be supplied to the reformer flows, a bypass passage connected to the gas supply passage and the exhaust gas passage so as to bypass the reformer and through which the fuel having passed through the reformer is circulated to an upstream of the reformer, and a switching valve switched between a normal position that does not allow the fuel having passed through the reformer to flow to the bypass passage and a circulating position that allows the fuel having passed through the reformer to flow to the bypass passage. 1. An engine system comprising:an engine having a combustion chamber;an intake gas passage through which air to be supplied to the combustion chamber flows;an exhaust gas passage through which exhaust gas generated from the combustion chamber flows;a fuel injection valve from which a fuel is injected to the combustion chamber;a first throttle valve disposed in the intake gas passage and configured to control a flow rate of the air to be supplied to the combustion chamber;a reforming member configured to reform the fuel to generate a reformed gas containing hydrogen;a gas supply passage through which the air to be supplied to the reforming member flows;a fuel supply member configured to supply the fuel to the reforming member;a second throttle valve disposed in the gas supply passage and configured to control a flow rate of the air to be supplied to the reforming member;a reformed gas passage through which the reformed gas generated by the reforming member flows to the combustion chamber;a bypass passage that has one end connected to the gas supply passage so as to bypass the reforming ...

POWERPLANT AND RELATED CONTROL SYSTEM AND METHOD

A hydrogen fueled powerplant including an internal combustion engine that drives a motor-generator, and has a two-stage turbocharger, for an aircraft. A control system controls the operation of the motor-generator to maintain the engine at a speed selected based on controlling the engine equivalence ratio. The control system controls an afterburner, an intercooler and an aftercooler to maximize powerplant efficiency. The afterburner also adds power to the turbochargers during high-altitude restarts. The turbochargers also include motor-generators that extract excess power from the exhaust. 1. A powerplant , comprising:a combustion engine configured to produce motive force, and having an inlet and an outlet, and being characterized at any given time by an engine equivalence ratio;a generator configured to generate power from the motive force of the engine, and configured to apply a variable-level motive force to the engine; anda control system configured to control the motive force applied to the engine by the generator, wherein the control system is configured to control the generator such that the generator maintains the engine speed based upon a calculation of the engine equivalence ratio.2. The powerplant of claim 1 , wherein the engine is configured with a passageway connecting an engine inlet to a source of gaseous reactant claim 1 , and wherein the passageway is configured to pass a stream of gaseous reactant from the source of gaseous reactant without limitation from a controllable obstruction that would cause a reduction in pressure of the stream of gaseous reactant.3. The powerplant of claim 2 , and further comprising a compressor configured to compress the stream of gaseous reactant from the source of gaseous reactant claim 2 , wherein the passageway is configured to always provide the stream of gaseous reactant to the engine inlet at substantially the pressure level established by the compressor.4. The powerplant of claim 2 , wherein the engine is a ...

FUEL SYSTEM FOR BI-FUEL VEHICLE AND METHOD OF FILLING BI-FUEL VEHICLE WITH LPG FUEL USING THE SAME

A fuel system for a bi-fuel vehicle, which is provided with an engine and an LPG tank connected to each other through a fuel supply line and a fuel return line through which liquefied petroleum gas (LPG) fuel passes, includes: a 3-way valve which is installed in the fuel return line, and selectively opened and closed to move returning LPG fuel to a canister connected with a fuel tank; and a return tube, which branches off from the fuel return line, installed so that the returning LPG fuel passes through the canister in accordance with an operation of the 3-way valve, allowing the LPG fuel of which the temperature is decreased by heat exchange while the LPG fuel passes through the canister to move to the fuel return line. 1. A fuel system for a bi-fuel vehicle , which is provided with an engine and an LPG tank which are connected to each other through a fuel supply line and a fuel return line through which liquefied petroleum gas (LPG) fuel passes , the fuel system comprising:a 3-way valve which is installed in the fuel return line, and selectively opened and closed to move returning LPG fuel to a canister connected with a fuel tank; anda return tube, which branches off from the fuel return line, installed so that the returning LPG fuel passes through the canister in accordance with an operation of the 3-way valve, allowing the LPG fuel of which the temperature is decreased by heat exchange while the LPG fuel passes through the canister to move to the fuel return line.2. The fuel system of claim 1 , wherein the return tube includes:an inflow line which branches off from the fuel return line, and is connected to an inlet side of the canister;a passing line which is installed to pass through the canister, and defines a section for heat exchange of the returning LPG fuel; andan outflow line which is connected to an outlet side of the canister, and allows the LPG fuel, which has exchanged heat, to move to the fuel return line.3. The fuel system of claim 2 , wherein the ...

Fuel Injection Valve And Method Of Actuating

A fuel injection valve injects a fuel into the combustion chamber or into the injection port of an internal combustion engine, the valve being actuated by an actuator assembly that includes a small displacement actuator and a large displacement actuator. The method includes commanding the small displacement actuator to move the valve member to a first open position corresponding to a first flow area and commanding the large displacement actuator to move the valve member to a second open position corresponding to a second flow area that is larger than the first flow area such that the ratio between the second flow area and the first flow area is at least 15:1. The fuel injection valve can also be operated to alternatively inject two different fuels, one of the fuels being a gaseous fuel and the other one being a liquid fuel. 1. A method of actuating a directly actuated fuel injection valve , said method comprising:(a) biasing a valve member in a closed position at which fuel flow through said valve is blocked by applying a closing force to said valve member; and (i) commanding said small displacement actuator to directly move said valve member against said closing force to a first open position corresponding to a first flow area, and', '(ii) commanding said large displacement actuator to directly move said valve member against said closing force to a second open position corresponding to a second flow area that is larger than said first flow area,, '(b) activating an actuator assembly comprising a large displacement actuator and a small displacement actuator which are each independently operable to produce a lift of said valve member away from a valve seat bywherein a ratio between said second flow area and said first flow area is at least 15:1.2. The method of claim 1 , further comprising directly moving said valve member to said first open position corresponding to said first flow area when injecting a first fuel and directly moving said valve member to said second ...

Control system for a multi-fuel internal combustion engine

The present invention is intended to suppress generation of a misfire and an increase in the amount of emission of HC, in a multi-fuel internal combustion engine of compression ignition type using, as fuels, a liquid fuel which can be ignited by compression and a gas fuel which is lower in ignitability than the liquid fuel. In the invention, in the same operating state, in cases where the liquid fuel and the gas fuel are caused to combust with the liquid fuel being used as an ignition source, the equivalent ratio of a mixture in a cylinder is made to increase, in comparison with the case where only the liquid fuel is caused to combust, and the rate of the increase of the equivalent ratio with respect to the case where only the liquid fuel is caused to combust is made smaller, when an engine load is low in comparison with the time when the engine load is high, and when an engine rotational speed is low in comparison with the time when the engine rotational speed is high.

METHODS AND SYSTEMS FOR FUEL INJECTION CONTROL

Methods and systems are provided for continuously estimating a direct injector tip temperature based on heat transfer to the injector from the cylinder due to combustion conditions, and heat transfer to the injector due to flow of cool fuel from the fuel rail. Variations in the injector tip temperature from a steady-state temperature are monitored when the direct injector is deactivated. Upon reactivation, a fuel pulse width commanded to the direct injector is updated to account for a temperature-induced change in fuel density, thereby reducing the occurrence of air-fuel ratio errors. 1. An engine method , comprising:estimating a direct injector tip temperature different from fuel temperature based on cylinder conditions including cylinder combustion conditions and cylinder valve operation; andresponsive to deactivation or reactivation of a direct injector, adjusting one or more of a direct injection fuel pulse and a port injection fuel pulse based on each of the estimated direct injector tip temperature and fuel temperature.2. The method of claim 1 , wherein estimating based on cylinder combustion conditions includes estimating based on whether cylinder combustion is present or absent while the direct injector is deactivated claim 1 , the direct injector tip temperature increased higher than the fuel temperature when cylinder combustion is present claim 1 , the direct injector tip temperature decreased lower than the fuel temperature when cylinder combustion is absent.3. The method of claim 2 , wherein an increase in the direct injector tip temperature is raised relative to an increase in the fuel temperature as an average cylinder load increases when cylinder combustion is present.4. The method of claim 2 , wherein an increase in the direct injector tip temperature is raised relative to an increase in the fuel temperature as cylinder combustion air-fuel ratio becomes leaner than stoichiometry when cylinder combustion is present.5. The method of claim 1 , wherein ...

Diagnostic method for a refueling event detection system

A method for diagnosing the performance of a refueling event detection system for a vehicle is provided. The method includes the steps of a) determining a fuel change amount based on a difference of an indicated fuel amount and a previously indicated fuel amount, b) determining a consumed amount of fuel consumed by the engine since a prior refueling event was detected, and c) diagnosing the performance of the refueling event detection system based on the consumed amount and the fuel change amount.

METHOD AND SYSTEM FOR ENGINE CONTROL

Methods and systems are provided for fuel systems including a gaseous fuel. Fuel rail over-pressure may be addressed by temporarily closing a fuel tank valve of the gaseous fuel and initiating diagnostics routines to determine if a pressure regulator is degraded. If the pressure regulator is degraded, one or more fuel system components may be adjusted to enable fuel rail pressure control. 1. A method of operating a fuel system to selectively deliver a gaseous fuel to an engine , comprising: sequentially opening a tank valve and a fuel rail valve of the fuel system;', 'indicating degradation of a pressure regulator of the fuel system based on a change in fuel rail pressure during the sequential opening; and, 'during conditions including gaseous fuel not being delivered to the engine,'}delivering a liquid fuel to the engine.2. The method of claim 1 , wherein the gaseous fuel is delivered to the engine via a first fuel rail and the liquid fuel is delivered to the engine via a liquid fuel rail.3. The method of claim 1 , wherein the conditions include a fuel rail pressure of the gaseous fuel being higher than a threshold.4. The method of claim 1 , wherein the pressure regulator is an electronic pressure regulator including a mechanical pressure regulator coupled upstream of the fuel rail valve claim 1 , and wherein degradation of the pressure regulator includes one or more of degradation of the mechanical pressure regulator and degradation of the fuel rail valve.5. The method of claim 4 , wherein the sequential opening includes opening the tank valve and then opening the fuel rail valve.6. The method of claim 5 , wherein the indicating includes indicating degradation of the pressure regulator in response to a change in fuel rail pressure following the opening of the tank valve but before the opening of the fuel rail valve.7. A method claim 5 , comprising:closing a fuel tank valve and a fuel rail valve of a gaseous fuel system; and sequentially opening the fuel tank valve ...

WORKING GAS CIRCULATION TYPE ENGINE

In a stratification operation, Ois injected from an oxygen injector during valve opening of an intake valve. Therefore, the injected Oflows into a combustion chamber immediately after the injection, and forms a layer having a constant spread in the combustion chamber. Meanwhile, the working gas in the combustion chamber forms such a layer as to cover the Olayer on a wall surface of the combustion chamber in conjunction with formation of the Olayer. In other words, in the combustion chamber, an inner layer with a high Oconcentration and an outer layer with a high working gas concentration are respectively formed. 1. (canceled)2. A working gas circulation type engine , comprising:a circulation path in which a working gas circulates;a combustion chamber that is provided in the circulation path, allows a reaction that generates water vapor by combustion of an oxidant and fuel to proceed, and allows the working gas which is taken in from the circulation path to expand in conjunction with the reaction to discharge the working gas to the circulation path;stratification operation executing means for executing a stratification operation of forming an inner layer comprising a reactant and an outer layer comprising the working gas in the combustion chamber; andwater vapor separating and removing means that is provided in the circulation path, and separates and removes water vapor from the working gas that flows in the circulation path,wherein the stratification operation executing means comprises:inlet port opening and closing means for opening and closing an inlet port of the combustion chamber;reactant supply means provided in the circulation path in a vicinity of the inlet port and for supplying the reactant to the combustion chamber; andcontrol means for controlling the inlet port opening and closing means and the reactant supply means so that the reactant flows in a vicinity of a center of the combustion chamber during opening of the inlet port, andwherein in the ...

METHOD AND SYSTEM FOR SUPPLYING LIQUEFIED PETROLEUM GAS TO A DIRECT FUEL INJECTED ENGINE

A method for supplying fuel to a direct injection fuel pump of an internal combustion engine is described. In one example, pressure and/or temperature of a fuel supplied to the direct injection fuel pump may be adjusted to ensure liquid fuel is supplied to the direct injection fuel pump so that the possibility of engine air-fuel ratio errors may be reduced. 1. A method , comprising:increasing cooling of fuel supplied to a direct injection fuel pump in response to direct injection fuel pump volumetric efficiency being less than a threshold.2. The method of claim 1 , further comprising increasing pressure of fuel supplied to the direct injection fuel pump in response to the direct injection fuel pump volumetric efficiency being less than the threshold value.3. The method of claim 1 , further comprising determining a volumetric efficiency error and adjusting cooling of fuel supplied to the direct injection fuel pump in response to the volumetric efficiency error.4. The method of claim 1 , where cooling of fuel supplied to the direct injection fuel pump is performed via injecting a fuel into a cooling chamber.5. The method of claim 4 , further comprising supplying the fuel to an engine via a port fuel injector.6. The method of claim 4 , further comprising returning the fuel to a fuel tank.7. The method of claim 1 , where the volumetric efficiency is based on engine speed claim 1 , a direct injection fuel pump command claim 1 , and a fuel injection volume.8. A method claim 1 , comprising:increasing cooling of fuel supplied to a direct injection fuel pump in response to direct injection fuel pump volumetric efficiency being less than a threshold without increasing fuel pressure supplied to the direct injection fuel pump, in a first mode; andincreasing pressure of fuel supplied to the direct injection fuel pump in response to direct injection fuel pump volumetric efficiency being less than the threshold without decreasing temperature of fuel supplied to the direct ...

GAS ENGINE

This disclosure includes engines that are capable of controlling an air-fuel ratio responsive to rapid changes in the calorific value of a fuel gas. Some engines include an A/F valve (), a solenoid valve (), and a control unit () configured to close the A/F valve when an average opening degree of the solenoid valve is lower than a preset target opening degree, and open the A/F valve when the average opening degree is equal to or higher than the target opening degree. In some engines, when the opening degree of the solenoid valve has been an upper limit opening degree or a lower limit opening degree of the solenoid valve over a predetermined number of times, the control unit is configured to compare with the upper or lower limit opening degree, in lieu of the average opening degree, against the target opening degree to open or close the A/F valve. 1. A gas engine comprising:a first valve and a second valve arranged in a fuel path, the second valve having a longer control period than the first valve does;an exhaust gas purification catalyst arranged in an exhaust path;an air-fuel ratio detection sensor arranged on an entrance side of the exhaust gas purification catalyst; and issue to the second valve a drive signal for setting an opening degree to a predetermined opening degree, and issue to the first valve a drive signal for setting an opening degree to a fuel rich side or a fuel lean side based on a detection signal of the air-fuel ratio detection sensor,', 'recognize an opening degree at a time of switching from the fuel rich side to the fuel lean side as a maximal opening degree and an opening degree at a time of switching from the fuel lean side to the fuel rich side as a minimal opening degree, and calculate an average opening degree based on a predetermined number of the maximal opening degrees and a predetermined number of the minimal opening degrees, and', 'when the average opening degree is lower than a target opening degree that is preset based on an ...

Monitoring Apparatus for a Pressure Tank, and Pressure Tank

A monitoring apparatus is provided for a pressure tank, in particular in a motor vehicle. The monitoring apparatus is designed to determine current operating parameters of the pressure tank and, on the basis of the operating parameters, to calculate and preferably to display a maximum possible filling level for the pressure tank under the current operating parameters. 1. An apparatus for a pressure tank , comprising:a monitoring device set up to determine current operating parameters of the pressure tank and, using said operating parameters, calculate a maximum possible filling level for the pressure tank given the current operating parameters.2. The apparatus according to claim 1 , further comprising:at least one temperature sensor that can record a temperature within the pressure tank as an operating parameter of the pressure tank and/or a pressure sensor that can record a pressure within the pressure tank as an operating parameter of the pressure tank.3. The apparatus according to claim 2 , further comprising:a flow sensor that can record an outflow mass stream from the pressure tank as an operating parameter of the pressure tank.4. The apparatus according to claim 1 , further comprising:a flow sensor that can record an outflow mass stream from the pressure tank as an operating parameter of the pressure tank.5. The apparatus according to claim 1 , wherein the monitoring device has a memory in which a value for a best possible filling level for the pressure tank is stored.6. The apparatus according to claim 1 , further comprising:a display device on which the maximum possible filling level and/or a best possible filling level are displayable.7. The apparatus according to claim 5 , further comprising:a display device on which the maximum possible filling level and/or a best possible filling level are displayable.8. A pressure tank claim 1 , comprising an apparatus according to .9. The pressure tank according to claim 8 , further comprising a heating device claim 8 ...

Project Planning Tool For A Gas Engine Or A Dual-Fuel Engine And Method For Parameterisation Of The Same

A system for project planning for an engine for determining an operating behavior of the engine to be expected under defined operating conditions of the engine includes: a plurality of sensors configured to measure respective ones of the defined operating conditions of the engine; and a knocking intensity prediction tool configured to determine the knocking intensity of the engine to be expected under the defined operating conditions of the engine. 1. A system for project planning for an engine for determining an operating behavior of the engine to be expected under defined operating conditions of the engine , the system comprising:a plurality of sensors configured to measure respective ones of the defined operating conditions of the engine; anda knocking intensity prediction tool configured to determine the knocking intensity of the engine to be expected under the defined operating conditions of the engine,2. The system according to claim 1 , wherein the knocking intensity prediction tool is configured to determine an expected knocking intensity of the engine dependent on one or more selected from the group of operating conditions consisting of: ambient temperature claim 1 , ambient pressure claim 1 , ambient humidity claim 1 , exhaust gas backpressure claim 1 , charge air pressure claim 1 , charge air temperature claim 1 , ignition timing and methane number of the gas.3. The system according to claim 2 , wherein the knocking intensity prediction tool uses a formula or a parameterized characteristic map that is parameterized for the type of the engine or the series of the engine claim 2 , wherein the formula or the parameterized characteristic map utilizes claim 2 , as input variables claim 2 , ambient temperature and/or ambient pressure claim 2 , ambient humidity claim 2 , exhaust gas backpressure claim 2 , charge air pressure claim 2 , charge air temperature claim 2 , ignition timing and methane number of the gas and outputs claim 2 , as an output variable claim ...

Derating operating strategy and gaseous fuel engine control system

Operating a gaseous fuel engine system includes determining a detonation level in combustion cylinders in an engine in the gaseous fuel engine system, comparing the detonation level to a detonation level limit, calculating a detonation error, and limiting an engine load of the engine to a derated engine load level based on a reduction to intake manifold air pressure (IMAP) that is performed responsive to the detonation error. The gaseous fuel engine system can be operated at a reduced, derated engine load, rather than being shut down, and permitted to increase in engine load level as detonation events clear. Related control logic and structure are disclosed.

Fuel type prediction from mass flow measurements and thermal conductivity sensor

The present disclosure provides a method for predicting a fluid type, comprising sensing, by a first sensor, mass flow data of a fluid in an engine, wherein the first sensor operates based on a first fluid property; sensing, by a second sensor, mass flow data of the fluid, wherein the second sensor operates based on a second fluid property; and detecting, by a logic circuit of a controller, a percent difference in the mass flow data provided by the first and second sensors, the percent difference indicating that the fluid is comprised of at least a first fluid type.

PRESSURE STABILIZER, A GAS ENGINE SYSTEM AND A GAS PRESSURE CONTROL METHOD

The present disclosure relates to a pressure stabilizer, a gas engine system and a gas pressure control method. The pressure stabilizer includes: a housing, which comprises a gas intake chamber and a piston chamber, wherein a spacer is provided between the gas intake chamber and the piston chamber, and the spacer is provided with a spacer through hole; a piston, which is slidably disposed in the piston chamber and which is provided therein with a piston through hole passing through the piston; a spring disposed in the piston chamber, wherein the spring is disposed between the piston and the spacer; a gas outlet end cap, which is disposed at an open end of the piston chamber and which is provided with a gas outlet; and an electromagnetic coil, which is disposed at an end of the gas outlet end cap that is close to the piston, wherein the electromagnetic coil generates a magnetic field force for attracting the piston in an energized state, so as to attract the piston to approach the gas outlet end cap. 1. A pressure stabilizer , comprising:a housing, which comprises a gas intake chamber and a piston chamber, wherein a spacer is provided between the gas intake chamber and the piston chamber, and the spacer is provided with a spacer through hole;a piston, which is slidably disposed in the piston chamber and which is provided therein with a piston through hole passing through the piston;a spring disposed in the piston chamber, wherein the spring is disposed between the piston and the spacer;a gas outlet end cap, which is disposed at an open end of the piston chamber and which is provided with a gas outlet;an electromagnetic coil, which is disposed at an end of the gas outlet end cap that is close to the piston, wherein the electromagnetic coil generates a magnetic field force for attracting the piston in an energized state, so as to attract the piston to approach the gas outlet end cap.2. The pressure stabilizer according to claim 1 , wherein the electromagnetic coil is ...

Mixed-Mode Combustion Methods Enabled by Fuel Reformers and Engines Using the Same

Disclosed here is an adaptive mixed-mode combustion method, which is mainly for internal combustion engines, either compression ignition or spark ignition, or mixed-mode engines using both compression ignition and spark ignition. The combustion method is composed of steps of partially charging fuel reformates through intake ports, or charging fuels with high ignition temperature through intake ports, wherein it has adaptive means to introduce fuels into combustion chamber space through both intake port fuel charge and direct fuel injections, based on engine loads and speeds, to produce a separate twin triangular heat release curves to effectively reduce emissions and fuel consumptions. A combustion engine using the disclosed combustion method is also provided. A corresponding method and fuel reformer of using exhaust energy for fuel reforming is also disclosed. Also disclosed is a rotating fuel reformer, comprising a rotating catalyst block to accelerate the fuel reforming rate and reduce the reformer weight and catalyst usage. The reformer also has devices to pressurize and atomize fuel through centrifugal forces. 1. A mixed-mode combustion method , which is mainly for internal combustion engines , comprising steps of: (i) introducing fuel into engine combustion chamber through both air intake ports and through direct fuel injections into combustion chamber with at least one fuel injector per cylinder; (ii) setting the direct fuel injection timings and fuel quantities based on engine speeds and loads , (iii) introducing fuel into the combustion chamber with an optional small pilot direct fuel injection before engine top dead center (TDC) , with at least one main direct fuel injection around TDC , and with an optional post direct fuel injection after said main direct fuel injection , in the same engine power cycle respectively , (iv) adjusting direct fuel injection timings such that the accumulated heat releases from the intake port fuel charge and main direct fuel ...

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 ...

SYSTEM, METHOD AND COMPUTER PROGRAM FOR SIMULATING VEHICLE ENERGY USE

A system, method and computer program for simulating vehicle energy use is provided. Drive cycle data collected during real-world driving of at least one vehicle is received by at least one computing device, and engine torque information associated with the real-world driving of the at least one vehicle is also received. Vehicle payload mass of the at least one vehicle is estimated based at least partly on the respective received engine torque information, and energy use of the at least one vehicle is estimated based at least partly on the respective drive cycle data, the respective torque information, and the estimated vehicle payload mass. 1. A system for simulating energy use of at least one vehicle , the system comprising at least one computing device configured to:receive drive cycle data collected during real-world driving of the at least one vehicle;receive engine torque information associated with the real-world driving of the at least one vehicle;estimate vehicle payload mass of the at least one vehicle based at least partly on the respective received engine torque information; andestimate energy use of the at least one vehicle based at least partly on the respective drive cycle data, the respective engine torque information, and the estimated vehicle payload mass.2. The system of wherein the at least one computing device is configured to estimate road grade information based at least partly on the drive cycle data claim 1 , and wherein the estimation of vehicle payload mass of the at least one vehicle is further based at least partly on the respective estimated road grade information.3. The system of wherein the estimation of the road grade information is further based at least partly on a correspondence of GPS location information associated with the respective drive cycle data and a database of road elevation information.4. The system of wherein the at least one computing device is configured to apply a low pass filter to the estimated vehicle payload ...

METHOD FOR DETERMINING THE PROPER OPERATION OF A VALVE IN A GAS TANK SYSTEM

Disclosed is a method for determining operation of a valve in a gas tank system comprising a plurality of gas tank and valve arrangements, each comprising a gas tank and at least one valve arranged at a passage downstream said gas tank. The method comprises: opening the valves at the passages in a first set of gas tank and valve arrangements; determining a first pressure value at a gas transportation arrangement downstream all of said opened valves; closing the passage at all gas tank and valve arrangements, except for one gas tank and valve arrangement; waiting a pre-determined amount of time; determining a second pressure value at said gas transportation arrangement downstream the gas and tank and valve arrangement whose valve have not been closed; and determining whether said at least one valve which has not been closed operates properly based on said first and second determined pressure values. 1. A method for determining the proper operation of a valve in a gas tank system , wherein the gas tank system comprises a plurality of gas tank and valve arrangements , each gas tank and valve arrangement comprising a gas tank and at least one valve arranged at a passage downstream of said gas tank , the method comprising the steps of:a) opening the valves at the passages in a first set of gas tank and valve arrangements, wherein said first set is taken out of the plurality of gas tank and valve arrangements, and wherein the first set of gas tank and valve arrangements comprises at least two gas tank and valve arrangements;b) determining a first pressure value at a gas transportation arrangement downstream all of said valves which have been opened;c) closing the passage at all gas tank and valve arrangements by closing at least one valve at each such passage, except for one gas tank and valve arrangement, for which said at least one valve at the passage of the gas tank and valve arrangement is not closed, wherein said one gas tank and valve arrangement is comprised in ...

ENGINE CONTROL APPARATUS

Engines fuelled with gaseous fuel stored in liquefied form comprise different strategies and controls for managing gaseous fuel compared to other systems, previously resulting in an ad hoc arrangements of controllers. An engine control apparatus comprises an internal combustion engine fuelled with a gaseous fuel stored in liquefied form and a control unit programmed with a fuel system module, for monitoring gaseous fuel pressure and actuating a fuel injection apparatus for introducing gaseous fuel into a combustion chamber, and a liquefied gaseous fuel module, for monitoring the quantity of liquefied gaseous fuel remaining in a storage vessel and controlling a pumping apparatus that pumps liquefied gaseous fuel from the storage vessel to a vaporizer. The fuel system control module and the liquefied gaseous fuel control module cooperate to introduce gaseous fuel in the combustion chamber at a predetermined pressure as a function of engine operating conditions. 1. An engine control apparatus comprising an internal combustion engine fuelled with a gaseous fuel stored in liquefied form comprising: a fuel system module for monitoring gaseous fuel pressure and actuating a fuel injection apparatus for introducing gaseous fuel into a combustion chamber of said internal combustion engine; and', 'a gaseous fuel module for monitoring the quantity of liquefied gaseous fuel remaining in a storage vessel and controlling a pumping apparatus that pumps liquefied gaseous fuel from said storage vessel to a vaporizer;, 'a control unit programmed withwherein said fuel system control module and said gaseous fuel control module cooperate to introduce gaseous fuel in said combustion chamber at a predetermined pressure as a function of engine operating conditions.2. The engine control apparatus of claim 1 , wherein said fuel injection apparatus introduces gaseous fuel directly into said combustion chamber.3. The engine control apparatus of claim 1 , wherein said fuel injection apparatus ...

INTERNAL COMBUSTION ENGINE

An internal combustion engine with a cylinder head and at least one piston-cylinder unit, in which, in a cylinder, a piston can be moved between a bottom and a top dead center position, where, in the cylinder, between the piston and the cylinder head a main combustion chamber is formed, which communicates with a prechamber which has a prechamber gas valve, and where the intake and outlet valves of the main combustion chamber are actuated by an actuator, where the prechamber gas valve is connected to a source for a gas-air mixture and the prechamber charge consists of a gas-air mixture with a lambda higher than 1.2, preferably higher than 1.5 and particularly preferably higher than 1.7, and the actuator is configured such that the intake valve closes before the piston reaches the bottom dead center position, where the piston is designed as a flat piston. 1. An internal combustion engine with a cylinder head and at least one piston-cylinder unit , wherein , a cylinder , a piston is moveable between a bottom and a top dead center position , wherein , in the cylinder , between the piston and the cylinder head a main combustion chamber is formed , which communicates with a prechamber which has a prechamber gas valve , and wherein intake and outlet valves of the main combustion chamber are actuated by an actuator , wherein the prechamber gas valve is connected to a source for a gas-air mixture and the prechamber charge consists of a gas-air mixture with a lambda higher than 1.2 , preferably higher than 1.5 and particularly preferably higher than 1.7 , and the actuator is configured such that the intake valve closes before the piston reaches the bottom dead center position , wherein the piston is designed as a flat piston.2. The internal combustion engine according to claim 1 , wherein the ratio of the volume of the prechamber to the compression volume of the main combustion chamber is in the range of 1% to 5% claim 1 , preferably in the range of 2% to 4%.3. The internal ...

INTEGRATED NATURAL GAS FLOW REGULATION SYSTEM INCLUDING FUEL TEMPERATURE HOMOGENIZATION FOR IMPROVED ENGINE PERFORMANCE AND REDUCED EMSSIONS

A fluid pressure regulation and conditioning module comprises a metal manifold including a fluid flow path between fluid inlet outlets, a pressure regulator assembled to the metal manifold and disposed along the fluid flow path for regulating the pressure of the fluid exiting the module, and a filter assembly. The metal manifold further includes, for heating of the metal manifold with an externally supplied heat exchange media, a heat exchange media flow path extending between heat exchange media inlet and outlet. The filter assembly includes a metal filter housing and a filter element contained within the metal filter housing, the metal filter housing being in direct thermal contact with the metal manifold whereby heat from the metal manifold can flow to the metal filter housing for heating of the fluid not only in the metal manifold but also within the metal filter housing. 1. A fluid pressure regulation and conditioning module comprising:a metal manifold including an fluid inlet, fluid outlet and a fluid flow path between the fluid inlet and fluid outlet, and the metal manifold further including, for heating of the metal manifold with an externally supplied heat exchange media, a heat exchange media inlet, heat exchange media outlet and a heat exchange media flow path between the heat exchange media inlet and heat exchange media outlet;a pressure regulator assembled to the metal manifold and disposed along the fluid flow path for regulating the pressure of the fluid exiting the module; anda filter assembly upstream of the pressure regulator, the filter assembly including a metal filter housing and a filter element contained within the metal filter housing, the metal filter housing being in direct thermal contact with the metal manifold whereby heat from the metal manifold can flow to the metal filter housing for heating of the fluid not only in the metal manifold but also in the metal filter housing;wherein the fluid inlet of the manifold communicates with a ...

CONTROL SYSTEM FOR INTERNAL COMBUSTION ENGINE

A control device for an internal combustion engine comprising a combustion control part controlling a fuel feed system and ozone feed system so as to form a difference in ozone concentration space-wise or time-wise in a combustion chamber so that premixed gas burns by compression ignition in stages in the combustion chamber and an ozone malfunction judging part judging malfunction of the ozone feed system. The ozone malfunction judging part judges that the ozone feed system is malfunctioning when the self-ignition timing is retarded from the presumed self-ignition timing and the combustion noise is larger than the presumed combustion noise or when the self-ignition timing is advanced from the presumed self-ignition timing and the combustion noise is smaller than the presumed combustion noise. 1. A control device tor an internal combustion engine for controlling an internal combustion engine comprising: an engine body;a fuel feed system configured to directly feed fuel to a combustion chamber of the engine body; and a combustion control part configured to control the fuel feed system and the ozone feed system in a predetermined operating region so as to cause a difference in ozone concentration in the combustion chamber space-wise or time-wise so that the premixed gas burns inside the combustion chamber by compression ignition in stages; and', 'an ozone malfunction judging part configured to judge malfunction of the ozone feed system in the predetermined operating region,, 'an ozone feed system configured to directly or indirectly feed ozone to the combustion chamber, the control device comprises a self-ignition timing detecting part configured to detect a self-ignition timing of the premixed gas;', 'a presumed self-ignition timing calculating part configured to calculate a presumed self-ignition timing of the premixed gas;', 'a combustion noise detecting part configured to detect combustion noise when making a premixed gas burn by compression ignition; and', 'a ...

Internal combustion engine and method for starting an internal combustion engine

Internal combustion engine with at least one turbocharger having a compressor, a bypass valve by means of which the compressor can be bypassed by at least a partial flow of a fuel mixture provided for the combustion, and a control or regulating unit connected to the bypass valve for regulating or controlling a degree of opening of the bypass valve, whereby the control or regulating unit is designed to open and/or at least partially keep open the bypass valve when starting the internal combustion engine.

GAS INJECTION VALVE FOR INJECTING A COMBUSTIBLE GAS INTO AN INTERNAL COMBUSTION ENGINE, INTERNAL COMBUSTION ENGINE HAVING SUCH A GAS INJECTION VALVE, AND METHOD FOR OPERATING SUCH AN INTERNAL COMBUSTION ENGINE

A gas injection valve for injecting a combustible gas into an internal combustion engine, comprising a valve element, which can be moved between closed position and an open position, the open position being defined by a maximum stroke of the valve element. The maximum stroke of the valve element can be adjusted during operation of the gas injection valve. 110-. (canceled)11. A gas injection valve for injecting a combustion gas into an internal combustion engine , comprising:a valve member displaceable between a closed position and an open position defined by a maximum stroke of the valve member,wherein the maximum stroke of the valve member is adjustable during operation of the gas injection valve.12. The gas injection valve according to claim 11 , further comprising a housing and a first stop claim 11 , against which the valve member claim 11 , in the open position claim 11 , butts claim 11 , wherein the first stop defines the maximum stroke claim 11 , and wherein the first stop is displaceable claim 11 , viewed in a stroke direction of the valve member claim 11 , relative to the housing.13. The gas injection valve according to claim 12 , further comprising a stop member claim 12 , wherein the first stop is disposed on the stop member claim 12 , wherein the stop member is displaceable between a second stop claim 12 , arranged in a spatially fixed manner relative to the housing claim 12 , and a third stop claim 12 , arranged in a spatially fixed manner relative to the housing claim 12 , wherein the second stop defines a minimum position for the first stop claim 12 , and the third stop defines a maximum position for the first stop.14. The gas injection valve according to claim 13 , further comprising a first displacement mechanism for displacement of the valve member between the closed position and the open position claim 13 , and a second displacement mechanism for displacement of the first stop.15. The gas injection valve according to claim 14 , wherein the second ...

DEVICE FOR OPERATING AN ENGINE

The invention relates to a device and a method for ascertaining an injection time and/or an amount of a liquefied gas fuel—such as liquefied petroleum gas (LPG), natural gas (CNG), liquefied natural gas (LNG), biogas or hydrogen (H)—to be delivered to a cylinder of an engine () in order to operate the engine () in a bivalent or trivalent fuel operating mode, said device being designed in such a way that the ascertained injection time of the liquefied gas fuel is dependent on an ascertained calorific power or an ascertained gas mixture characteristic. A gas mixture analysis module () is used for optimizing combustion. A gas start mechanism allows a vehicle to be started on gas power even at low temperatures. 1. An apparatus for determining a blow-in time and/or an amount of liquefied gas fuel—such as autogas (LPG) , natural gas (CNG) , liquefied natural gas (LNG) , biogas or hydrogen (H2)—to be supplied to a cylinder of an engine for operating the engine in a bivalent or trivalent fuel mode , wherein the apparatus is arranged such that the determined blow-in time of the liquefied gas fuel is dependent on a determined calorific value or a determined gas-mixture-characteristic value.2. The apparatus of claim 1 , the apparatus being arranged for a liquefied gas fuel in form of a gas mixture such that the calorific value or the gas-mixture-characteristic value can be determined in dependency of a current composition of the gas mixture.3. The apparatus of claim 1 , wherein the apparatus comprises a gas-conductivity-sensor for measuring an electrical conductivity of the gas mixture of the liquefied gas fuel and/or the apparatus is arranged such that the calorific value or the gas-mixture-characteristic value can be determined based on the measured electrical conductivity.4. The apparatus of claim 3 , wherein the gas-conductivity-sensor comprises an anode and a cathode and/or the gas-conductivity-sensor is arranged such that for measuring the electrical conductivity a ...

CONTROL DEVICE FOR COMPRESSION-IGNITION ENGINE

A control device for a compression-ignition (CI) engine in which partial CI combustion including spark ignition (SI) combustion performed by combusting a portion of mixture gas inside a cylinder by spark ignition followed by CI combustion performed by causing the rest of the mixture gas inside the cylinder to self-ignite is executed within a part of an engine operating range, is provided, including an EGR (exhaust gas recirculation) controller configured to change an EGR ratio, and a combustion controller configured to control the EGR controller during the partial compression-ignition combustion to switch a combustion mode between first and second modes in which the EGR ratio is higher than the first mode. After the first mode is switched to the second mode, if a condition is satisfied, the combustion controller causes the resumption to the first mode after a given period of time has elapsed from the switching. 1. A control device for a compression-ignition engine in which partial compression-ignition combustion including spark ignition (SI) combustion performed by combusting a portion of a mixture gas inside a cylinder by spark ignition followed by compression ignition (CI) combustion performed by causing the remaining mixture gas inside the cylinder to self-ignite is executed at least within a part of an operating range of the engine , comprising:an EGR (exhaust gas recirculation) controller configured to change an EGR ratio that is a ratio of exhaust gas recirculated into the cylinder; anda combustion controller configured to control the EGR controller during the partial compression-ignition combustion to switch a combustion mode between a first mode and a second mode in which the EGR ratio is higher than the first mode,wherein after the combustion mode is switched from the first mode to the second mode, if a condition of resuming to the first mode is satisfied, the combustion controller causes the resumption to the first mode after a given period of time has ...

Fuel system for a vehicle

A natural gas system for a vehicle includes a fuel pod, a conduit defining a flow path, a fuel control module, and an accumulator. The fuel pod includes a fuel tank configured to store natural gas. The conduit includes a first end coupled to the fuel pod and a second end configured to be coupled to an engine. The fuel control module is disposed along the flow path and configured to regulate a flow of natural gas to the engine. The accumulator is disposed along the flow path downstream of the fuel control module. The accumulator is configured to buffer variations in the flow of natural gas such that the engine receives a consistent flow of natural gas.

Apparatus and Method for Detecting Leakage of Liquid Fuel into Gas Fuel Rail

Methods and systems for detecting leakage of a liquid fuel into a gas fuel rail of a dual-fuel system for an internal combustion engine are disclosed. The methods and systems include sending an injection signal from a controller to a fuel injector and subsequently injecting gas fuel and liquid fuel into a cylinder for combustion. A pressure in the gas rail detects the pressure in the gas rail over a pre-determined time period after the injection event. A controller measures pressure fluctuations in the gas rail over a pre-determined time period after the injection event. If the pressure in the gas rail fluctuates by more than the pre-determined amount, the controller is programmed to take at least one mitigating action to prevent or limit damage to the engine.

Two step metering solenoid for multi-physics fuel atomizer

A metering system for a fluid atomizer includes a housing, first and second metering members, and at least one solenoid. The housing includes a mixing chamber. The first metering member is operable to control flow of a first fluid to the mixing chamber. The second metering member is arranged coaxial with the first metering member and operable to control flow of a second fluid to the mixing chamber. The at least one solenoid is configured to operate at least one of the first and second metering members.

WORKING MACHINE

A working machine includes: a machine body; a prime mover that is mounted on the machine body; a fuel cylinder that contains a fuel; a vaporizer that vaporizes the fuel sent from the fuel cylinder and supplies the fuel to the prime mover; a temperature detector that detects a temperature correlating with a decrease in the temperature of the vaporizer; and a controller that imposes restraint on the flow rate of the fuel flowing from the vaporizer to the prime mover when the temperature detected by the temperature detector is lower than or equal to a first temperature. 1. A working machine comprising:a machine body;a prime mover that is mounted on the machine body;a fuel cylinder that contains a fuel;a vaporizer that vaporizes the fuel sent from the fuel cylinder and supplies the fuel to the prime mover;a temperature detector that detects a temperature correlating with a decrease in a temperature of the vaporizer; anda controller that imposes restraint on a flow rate of the fuel flowing from the vaporizer to the prime mover when the temperature detected by the temperature detector is lower than or equal to a first temperature.2. The working machine according to claim 1 , comprising a display unit that indicates that the flow rate of the fuel flowing to the prime mover is restrained.3. The working machine according to claim 1 , wherein the controller includes a rotation speed limiting unit that limits an upper limit of a rotation speed of the prime mover so as to restrain the flow rate of the fuel flowing to the prime mover.4. The working machine according to claim 1 , wherein the controller includes an output limiting unit that limits an output of the prime mover so as to restrain the flow rate of the fuel flowing to the prime mover.5. The working machine according to claim 1 , wherein the controller includes a removing unit that removes the restraint when the temperature detected by the temperature detector is higher than or equal to a second temperature that is ...

CONTROL DEVICE FOR INTERNAL COMBUSTION ENGINE AND CONTROL METHOD FOR INTERNAL COMBUSTION ENGINE

An internal combustion engine in which when an ECU receives an engine stop command by an ON-operation of an engine stop switch, a supply of fuel from an injector to a fuel reformation chamber is stopped while a supply of fuel from an injector to a combustion chamber is continued, and the residual amount of a reformed fuel in passages is estimated, in this state. When the estimated residual amount reaches a predetermined amount or zero, the fuel supply from the injector to the combustion chamber is stopped, and an internal combustion engine is stopped. 1. A control device for an internal combustion engine including a fuel reformation device capable of generating reformed fuel through a fuel reforming operation and an output cylinder to which the reformed fuel generated in the fuel reformation device is supplied through a reformed fuel supply path , the output cylinder being configured to yield an engine power by combusting the reformed fuel , the control device comprising:a reformed fuel processing unit configured to execute a reformed fuel processing operation, upon receiving an engine stop command or after the engine is stopped, for drawing out and processing the reformed fuel from the reformed fuel supply path until a residual amount of reformed fuel in the reformed fuel supply path is a predetermined amount or less.2. The control device according to claim 1 , wherein:when the engine stop command is received, the reformed fuel processing operation introduces the reformed fuel in the reformed fuel supply path into the output cylinder and combusts the reformed fuel in the output cylinder.3. The control device according to claim 1 , wherein:an exhaust path is provided in which the reformed fuel in the reformed fuel supply path flows while bypassing the output cylinder, an oxidation catalyst is provided in the exhaust path, and an alarm unit configured to issue an alarm is provided; andthe reformed fuel processing operation introduces the reformed fuel in the reformed ...

Recirculating system for a fuel supply system for a motor and method for supplying fuel to a motor of a vehicle through such a supply system

The present invention relates to a method for supplying fuel for a motor of a vehicle by a fuel supply system comprising: a first tank for containing a first fuel; supply means for supplying fuel to the motor; a supply line, for allowing said first fuel to pass from said first tank to said supply means; a return line, for allowing fuel to pass from said supply means to said first tank; a recirculating line, connected with said supply line and said return line, for allowing fuel to pass from said return line to said supply line; and valve means, configured to selectively direct fuel from said return line to said supply line by said recirculating line, or to said first tank; wherein said method comprises the steps of controlling the speed vehicle; controlling the vehicle motor load; defining a first threshold value of the vehicle speed; defining a second threshold value for the vehicle motor load; letting said first fuel passing from said first tank to said supply means through said supply line, and from said supply means to said first tank through said return line, preventing passage of fuel along said recirculating line, when the vehicle speed is lower than said first threshold value and/or motor load is lower than said second threshold value; or making said first fuel passing from said first tank to said supply means through said supply line and then through a closed circuit comprising a part of said return line, said recirculating line and a portion of said supply line, permitting passage of said first fuel through said recirculating line, so that said first fuel arrives again within said supply means, when the vehicle speed is higher than said first threshold value and motor load is higher than said second threshold value, so as to prevent an excessive increase within said first tank caused by inlet within the first tank of the first fuel warm arriving from said supply means.

METHOD FOR OPERATING AN ENGINE

A method for operating an engine is disclosed. The method may include supplying air from a primary air supply unit to an intake conduit. The method may also include supplying air to the engine from the intake conduit. The method may further include selectively supplying air from a secondary air supply unit to the intake conduit. In addition, the method may include maintaining an air fuel ratio between a first threshold value and a second threshold value during an increase in engine load increase by controlling a supply of air from the secondary supply unit to the intake conduit. 1. A method for operating an engine , comprising:supplying air from a primary air supply unit to an intake conduit;supplying air to the engine from the intake conduit;selectively supplying air from a secondary air supply unit to the intake conduit; andmaintaining an air fuel ratio between a first threshold value and a second threshold value during an increase in engine load by controlling a supply of air from the secondary supply unit to the intake conduit.2. The method of claim 1 , further including:supplying a liquid fuel from a liquid fuel supply unit to a cylinder of the engine;selectively supplying a gaseous fuel from a gaseous fuel supply unit to the intake conduit; andselectively supplying the liquid fuel in addition to an increased supply of the gaseous fuel when air fuel ratio reaches the first threshold value so as to keep engine operation at a desired engine operating curve.3. The method of claim 1 , wherein supplying the air from the primary air supply unit includes supplying the air using a compressor.4. The method of claim 1 , wherein supplying the air from the secondary air supply unit includes supplying the air from an air reservoir.5. The method of claim 1 , further including operating a solenoid actuated valve to control an amount of the air supplied from the secondary air supply unit.6. The method of claim 5 , wherein operating the solenoid actuated valve includes ...

Method and apparatus for controlling high pressure shut-off valve

Disclosed are an apparatus and a method for controlling an automotive high-pressure shut-off valve. The apparatus may include a high-pressure shut-off valve that is disposed in a high-pressure fuel line and passes or stops fuel flowing through the fuel line depending on whether or not a current is supplied, a switching device that is disposed in a circuit line for allowing the current to flow to the high-pressure shut-off valve and is switchable, and a control unit that variably controls the current flowing through the high-pressure shut-off valve to reduce the current by changing an average voltage applied to the high-pressure shut-off valve through a Pulse Width Modulation (PWM) control on the switching device.

FUEL SUPPLY SYSTEM AND VALVE ASSEMBLY THEREFOR

A valve assembly of a fuel supply system includes a first body defining a first bore, an inlet port to receive fuel into the first bore, and an outlet port. The valve assembly further includes a pneumatic chamber disposed in fluid communication with the first bore. The valve assembly further includes a first piston to move between a first position and a second position. The first piston restricts and allows flow of fuel from the inlet port to the outlet port, in the first position and the second position, respectively. The valve assembly further includes a vent passage located upstream of the pneumatic chamber and configured to receive fuel leaked from a flow path defined between the inlet port and the outlet port. The valve assembly also includes a check valve disposed in the vent passage and configured to selectively vent the fuel entering the vent passage. 1. A valve assembly for a fuel supply system , the valve assembly comprising: a first bore;', 'an inlet port in fluid communication with the first bore and configured to receive fuel from a fuel tank; and', 'an outlet port in fluid communication with the first bore and configured to supply the fuel from the first bore to an engine;, 'a first body defininga pneumatic chamber in fluid communication with the first bore of the first body;a first piston slidably disposed in the first bore and configured to reciprocate between a first position and a second position, wherein the first piston restricts flow of the fuel from the inlet port to the outlet port in the first position and allows flow of the fuel from the inlet port to the outlet port in the second position;a vent passage defined in the first body and located upstream of the pneumatic chamber, the vent passage configured to receive the fuel leaked from a flow path defined between the inlet port and the outlet port; anda check valve disposed in the vent passage and configured to selectively vent the fuel entering the vent passage.2. The valve assembly of claim ...

VEHICLE NATURAL GAS FUEL SUPPLY SYSTEMS

A vehicle natural gas fuel supply system includes a vehicle-tank natural gas fuel supply assembly and a vehicle natural gas fuel supply assembly, and at least one quick-connect-coupler for removably coupling the vehicle-tank natural gas fuel supply assembly and the vehicle natural gas fuel supply assembly. The vehicle-tank includes a natural gas tanker-trailer and the vehicle-tank is a pressurized vessel. A vehicle natural gas fuel supply system may eliminate a need to vent captured natural gas from the vehicle-tank. The captured natural gas, by remaining in a closed system and not being vented, effectively prevents unburned methane from entering into an ambient environment. The captured natural gas is directed through an air-gas mixer before reaching the engine of the prime-mover for motive action. 1. A vehicle natural gas fuel supply system comprising: a vehicle-tank;', a pressure-build-up-circuit;', 'a pressure-build-up-circuit-shut-off-valve; and', 'a pressure-build-up-line-hose;, 'a dedicated-pressure-build-up line comprising;'}, 'a tank-pressure-transmitter;', 'a tank-shut-off valve;', 'a tank-break-away-coupler;, 'a vehicle-tank natural gas fuel supply assembly comprising;'} a vehicle-hose;', 'a pressure-indicator;', 'a vehicle-shut-off-valve;', 'a vehicle-filter;', 'a vehicle-pressure-transmitter;', 'a vehicle-fuel-heater;', 'a vehicle-surge-chamber-connection;', 'a vehicle-low-pressure-shut-off-valve; and', 'a vehicle-low-pressure regulator;, 'a vehicle natural gas fuel supply assembly comprising;'}at least one quick-connect-coupler for removable coupling of said vehicle-tank natural gas fuel supply assembly and said vehicle natural gas fuel supply assembly such that said vehicle-tank natural gas fuel supply assembly and said vehicle natural gas fuel supply assembly are in fluid communication when coupled and independently isolated when uncoupled;wherein said vehicle natural gas fuel supply system comprises said vehicle-tank natural gas fuel supply assembly ...

METHOD FOR OPERATING AN INTERNAL COMBUSTION ENGINE

A method for operating an internal combustion engine including feeding a pilot quantity of gas fuel, into a prechamber before a piston reaches a top dead center position. The method comprises autoignition of the pilot quantity of gas fuel in the prechamber, feeding a main quantity of gas fuel into the prechamber after the autoignition, and ignition of the main quantity of gas fuel by the conditions in the prechamber that are brought about by the autoignited pilot quantity. The method makes it possible to operate an internal combustion engine purely with methane or some other gaseous fuel, by means of compression autoignition of the pilot quantity. 115-. (canceled)16. A method for operating an internal combustion engine , comprising:compressing supplied air in a main combustion chamber and a prechamber of the internal combustion engine by moving a piston in the main combustion chamber to a top dead center position of a piston movement of the piston;feeding a pilot quantity of gas fuel into the prechamber before the piston reaches the top dead center position;autoignition of the pilot quantity of gas fuel in the prechamber;feeding a main quantity of gas fuel into the prechamber after the autoignition; andignition of the main quantity of gas fuel by the conditions in the prechamber that are brought about by the autoignited pilot quantity.17. The method as claimed in claim 16 , wherein the internal combustion engine is a single-fuel internal combustion engine.18. The method of claim 17 , wherein the gas fuel is methane.19. The method as claimed in claim 16 , wherein:compression takes place at a compression ratio greater than or equal to 20, 21, 22 or 23.20. The method as claimed in claim 16 , wherein:the pilot quantity results from a pilot mass of gas fuel of between 0.5 mg and 3 mg, preferably between 0.5 mg and 2 mg.21. The method as claimed in claim 16 , wherein:the pilot quantity is selected in such a way that a combustion air ratio of between 0.5 and 1.6 is ...

Method for detecting a gas amount

A method for detecting the quantity of gas (m) which is supplied by means of a gas supply device to an antechamber of an internal combustion engine, whereby a targeted disturbance (Δu) of the gas quantity (m) supplied by the gas supply device is performed and a change (ΔT) resulting from the target disturbance (Δu) in an exhaust gas temperature (T) of an exhaust gas generated in a combustion chamber connected to the antechamber is measured, whereby, by comparison with a target value of the change (ΔTtarget) of the exhaust gas temperature (T), the gas quantity (m) supplied by means of the gas supply device is deduced.

COMPRESSION-IGNITION ENGINE AND CONTROL METHOD FOR COMPRESSION IGNITION ENGINE

A compression ignition engine includes an engine body, a first fuel supply for supplying a first fuel, a second fuel supply for supplying a second fuel, and a controller for outputting a signal to each of the first and second fuel supplies. The second fuel less easily vaporizes than the first fuel, and has a pressure and temperature at which compression ignition is initiated and at least one of which is lower than that of the first fuel. The controller outputs a signal to the first fuel supply such that a weight of the supplied first fuel is larger than that of the supplied second fuel, and thereafter, outputs a signal to the second fuel supply such that the second fuel is supplied to a combustion chamber. A formed air-fuel mixture is compressed and ignited. 1. A compression ignition engine comprising:an engine body having a combustion chamber;a first fuel supply configured to supply a first fuel to the combustion chamber;a second fuel supply configured to supply a second fuel to the combustion chamber, the second fuel less easily vaporizing than the first fuel, and having a pressure and temperature at which compression ignition is initiated and at least one of which is lower than that of the first fuel; anda controller configured to output a signal to each of the first fuel supply and the second fuel supply, whereinthe controller outputs a signal to the first fuel supply such that a weight of the first fuel supplied to the combustion chamber is larger than a weight of the second fuel supplied to the combustion chamber, and thereafter, outputs a signal to the second fuel supply such that the second fuel is supplied to the combustion chamber, andthe controller outputs the signal to each of the first fuel supply and the second fuel supply, thereby allowing formation of an air-fuel mixture inside the combustion chamber and compressing and igniting the air-fuel mixture.2. The compression ignition engine of claim 1 , whereinthe first fuel has a boiling point lower than ...

METHOD FOR OPERATING ENGINE FOR VESSEL

Disclosed is a method for operating an engine for a vessel including an engine which can use both natural gas and fuel oil as fuel. According to the method for operating an engine for a vessel, each engine is operated in one of modes including: a gas mode in which the engine is driven using natural gas as fuel; a fuel oil mode in which the engine is driven using fuel oil as fuel; and a fuel distribution mode in which the engine simultaneously uses natural gas and fuel oil as fuel. 1. An engine operating method for a ship provided with engines operable using natural gas and fuel oil at the same time , wherein each of the engines is operated in any one of a gas mode in which each of the engines is driven using natural gas as a fuel , a fuel oil mode in which each of the engines is driven using fuel oil as a fuel , and a fuel sharing mode in which each of the engines is driven using natural gas and fuel oil at the same time.2. The engine operating method according to claim 1 , wherein each of the engines is operated in the fuel sharing mode through a process comprising: switching the engine to the fuel sharing mode; determining proportion of gas burned in the fuel sharing mode; calculating amount of gas consumed in the fuel sharing mode; and providing feedback on the state of the engine in the fuel sharing mode.3. The engine operating method according to claim 1 , wherein the engine operating method is determined by a power management system and a gas management system of an integrated automation system operated in conjunction with each other claim 1 , the power management system being operated in any one of a diesel mode in which a plurality of engines of the ship are all in the fuel oil mode claim 1 , a first mixed mode in which some of the plurality of engines are in the fuel oil mode and some of other engines are in the gas mode claim 1 , a gas only mode in which the plurality of engines are all in the gas mode claim 1 , a fuel sharing only mode in which the ...

High Pressure Gas Phase Injector

An injector, including: a moveable armature having a bore and upper and lower control surfaces; a lower housing including a bore and upper and lower stationary control surfaces; and a flow geometry defined along an exterior of the armature. The armature includes a transverse flow path fluidly coupled with the armature bore and the flow geometry. The lower housing includes a transverse flow path fluidly coupled with the lower housing bore. Upon moving the armature from a first position to a second position, a first flow path is formed between the flow geometry and the lower housing transverse flow geometry through a space between the lower stationary control surface and the lower armature control surface, and a second flow path is formed between the armature bore and the lower housing transverse flow geometry through a space between the upper stationary control surface and the armature upper control surface. 1. An injector having an inlet and an outlet for injecting a fuel into an internal combustion engine , the injector comprising:an upper housing;a moveable armature disposed at least partly in the upper housing and having a plurality of control surfaces and a bore, the control surfaces of the armature comprising an upper control surface and a lower control surface;a lower housing coupled to the upper housing and including a bore and a plurality of stationary control surfaces comprising a lower stationary control surface and an upper stationary control surface, the upper and lower stationary control surfaces and the moveable armature forming at least part of a metering valve of the injector;a spring engaging the armature so that the armature is biased by the spring towards closure of the control surfaces of the armature against the stationary control surfaces of the lower housing, the closure defining a closed position of the metering valve which prevents the fuel from exiting the outlet;an electromagnetic coil disposed relative to the armature such that passing a ...

AIR FUEL RATIO CONTROL FOR AN INTERNAL COMBUSTION ENGINE THAT CAN BE OPERATED WITH FUELS AT DIFFERENT PROPERTIES

The air-fuel ratio feedback control is performed by using a first correction value which is determined depending on a difference between a detected air-fuel ratio (A/F) of an air-fuel mixture and a target A/F and a second correction value which is determined depending on the property of the fuel. Further, fuel property learning control is carried out to correct the first correction value and the second correction value so that an absolute value of the first correction value is not more than a threshold value, when the absolute value of the first correction value is larger than the threshold value after performing the charging with fuel. A combustion continuing correction value range, which is a range of the second correction value to allow the A/F of the mixture to be included in an A/F range in which combustion can be continued, is stored, and the second correction value is set to a value within the combustion continuing correction value range if the A/F feedback control and the fuel property learning control are interrupted. 1. A control system for an internal combustion engine which uses fuel having a possibility that a property may change every time being charged , the control system for the internal combustion engine comprising: perform air-fuel ratio feedback control for determining a fuel injection amount so that an air-fuel ratio approaches a target air-fuel ratio, in which a first correction value is determined depending on a difference between a detected air-fuel ratio of an air-fuel mixture combusted in the internal combustion engine and the target air-fuel ratio, and the fuel injection amount is determined using the first correction value and a second correction value; and', 'when an absolute value of the first correction value in the air-fuel ratio feedback control becomes larger than a predetermined threshold value after fuel is charged, perform fuel property learning control for correcting the second correction value so that the absolute value of the ...

METHOD FOR MEASURING THE PRESSURE OF A COMPRESSED GASEOUS FUEL IN A SUPPLY LINE OF AN ENGINE EQUIPPING A MOTOR VEHICLE AND ASSOCIATED MEASURING DEVICE (AS AMENDED)

A method for measuring pressure of a gaseous fuel compressed in a feed system of an engine equipping a motor vehicle, by a pressure measuring device having an infrared quality sensor and an electronic control unit, the measuring method being characterized in that it consists in determining a corrected absorbance value of the fuel based on absorbance measurements performed by infrared analysis, at preset wavelengths, and in comparing the value to a nominal absorbance value, determined beforehand based on absorbance measurements performed at a nominal pressure after a pressure stabilization phase of the fuel and at the same said wavelengths, in order to determine the fuel pressure. 1. A method for measuring pressure of a gaseous fuel compressed in a feed system of an engine equipping a motor vehicle , by a pressure measuring device comprising an infrared quality sensor and an electronic control unit , the measuring method comprising:determining a corrected absorbance value of the fuel based on absorbance measurements performed by infrared analysis at preset wavelengths, andcomparing said value to a nominal absorbance value, determined beforehand from absorbance measurements made at a nominal pressure after a phase of stabilization of the fuel pressure and at the same said wavelengths, in order to determine the pressure of the fuel.2. The method for measuring pressure according to further comprising:{'b': '3', 'i': 'a', 'Step E: measurement and storage of a nominal absorbance determined based on absorbance measurements made at a first wavelength and at a second wavelength, preset and distinct from one another at a nominal pressure,'}{'b': '5', 'i': 'a', 'Step E: measurement of at least a first, and a second absorbance value at the first wavelength and at the second wavelength, present and distinct from one another;'}{'b': '6', 'i': 'a', 'Step E: calculation of the fuel pressure as a function of the nominal pressure, of the nominal absorbance, of the first and of the ...

GAS FEED METHOD FOR A GAS ENGINE OR DUAL-FUEL ENGINE, AND GAS SUPPLY APPARATUS FOR SAME

A gas feed method for a gas engine or dual-fuel engine in which combustion gas (G) is burned with combustion air (L). A gas valve () for the feed of combustion gas (G) into the combustion air (L) is arranged upstream of the gas engine or dual-fuel engine. The combustion gas (G) is fed in uncontrolled fashion to the gas valve () independently of the operating state of the gas engine or dual-fuel engine. The invention furthermore relates to a gas supply apparatus. A gas valve () for the feed of combustion gas (G) into the combustion air (L) is arranged in the gas feed () upstream of the gas engine or dual-fuel engine. Control of the gas pressure in a manner dependent on the operating state of the gas engine or dual-fuel engine is not provided upstream of the gas valve (). 1. A gas feed method for a gas engine or dual-fuel engine in which combustion gas (G) is combusted with combustion air (L) , comprising{'b': '1', 'arranging a gas valve () for supplying combustion gas (G) in the combustion air (L) upstream of the gas engine or dual-fuel engine, and'}{'b': '1', 'supplying the combustion gas (G) unregulated to the gas valve () without regard to the operating state of the gas engine or dual-fuel engine.'}21. The method according to claim 1 , further comprising reducing or limiting the pressure of the combustion gas (G) supplied to the gas valve ().311. The method according to claim 1 , wherein during operation of the gas engine or dual-fuel engine claim 1 , the pressure before and after the gas valve () as well as the temperature of the supplied combustion gas are measured claim 1 , the engine operating point is detected and from this at least one of the opening duration and unblocked opening cross-sectional area of the gas valve () are controlled.411. The method according to claim 3 , wherein a previously detected flow performance map of the gas valve () is stored and at least one of the opening duration and the unblocked opening cross-sectional area of the gas valve ...