EP1013914A1 - Fuel injection system for an internal combustion engine - Google Patents

Fuel injection system for an internal combustion engine Download PDF

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Publication number
EP1013914A1
EP1013914A1 EP99403253A EP99403253A EP1013914A1 EP 1013914 A1 EP1013914 A1 EP 1013914A1 EP 99403253 A EP99403253 A EP 99403253A EP 99403253 A EP99403253 A EP 99403253A EP 1013914 A1 EP1013914 A1 EP 1013914A1
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EP
European Patent Office
Prior art keywords
engine
pressure
fuel
injectors
control means
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Granted
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EP99403253A
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German (de)
French (fr)
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EP1013914B1 (en
Inventor
Henri Mazet
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Marelli France SAS
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Magneti Marelli France SAS
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/02—Circuit arrangements for generating control signals
    • F02D41/04—Introducing corrections for particular operating conditions
    • F02D41/06—Introducing corrections for particular operating conditions for engine starting or warming up
    • F02D41/062—Introducing corrections for particular operating conditions for engine starting or warming up for starting
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D2250/00—Engine control related to specific problems or objectives
    • F02D2250/31—Control of the fuel pressure

Definitions

  • the present invention relates to a circuit fuel supply for a combustion engine internal.
  • the invention applies to direct injection engines.
  • Power circuits usually encountered in internal combustion engines of motor vehicles include a high pump pressure, a rail of injectors which is supplied with fuel through the high pressure pump and means for controlling the operation of the injectors, the control means now closed the injectors during a fraction of the engine start-up phase and allowing the injectors to open when the pressure in the injector manifold has reached a threshold value predetermined, the control means comprising means which reconstitute the value of the pressure at from an operating model incorporating engine operating parameters.
  • the pressure in fuel inside the fuel system can be low due to prolonged shutdown or because it has been intentionally made weak to avoid leakage to injectors when stopped.
  • the injectors send fuel into engine cylinders under the form a regular spray pattern.
  • the injection is all the better as the fuel admitted in the injectors is high pressure.
  • the object of the present invention is to remedy the aforementioned disadvantages in providing a circuit power supply which allows to establish, from the start, a optimal fuel pressure in the injectors when operation of these.
  • a circuit of the aforementioned type is essentially characterized in that the threshold value is determined and modulated by the control means as a function of parameters engine operation such as temperature.
  • the invention further relates to a motor for motor vehicle comprising a power supply circuit fuel as defined above and a starter whose features allow the engine to be driven at a sufficient speed to reach the value of fuel threshold pressure in a time interval reduced.
  • the time interval is significantly less than or equal to one second
  • the power circuit 1 shown in Figure 1 is intended to supply fuel to a combustion engine internal of a motor vehicle.
  • This power circuit includes a high pressure injection pump 2 and a ramp 4 downstream of which are injectors 5.
  • the pump 2 is supplied with fuel from a tank (not shown) by an inlet duct 3 in the direction of arrow F.
  • Ramp 4 is supplied with high fuel pressure by an outlet pipe 6 connecting the pump 2 to the rail 4.
  • the injectors 5 spray the fuel at the inside of engine cylinders (not shown) under the jet shape 8.
  • injectors 5 are controlled by control means 7. These control means also control the high pressure pump operation 2.
  • the high pressure injection pump 2 is by example a pump whose speed of rotation is linked to that of the engine with which it is associated.
  • a starter known per se (not shown) drives the engine: the rotation speed of the pump is proportional to the speed of rotation of the engine.
  • the fuel pressure delivered by the pump is then insufficient for proper functioning of the injectors 5.
  • FIG. 2 shows that, during the engine starting phase, an operator actuates the starter at an instant t 1 , which drives the engine at a speed R d .
  • the control means 7 keep the injectors 5 closed so that the injection of fuel into these injectors is prohibited.
  • the fuel pressure delivered by this pump then increases continuously from time t 1 to time t 2 . This increase is relatively slow due to the phenomena of elasticity of the circuit and compressibility of the fuel.
  • the pressure reaches a threshold value P s . This threshold value is considered sufficient to obtain good spraying of the fuel by the injectors 5.
  • the control means 7 then authorize the opening of the injectors 5 at this instant t 2 .
  • the injectors 5 are kept closed for a fraction of the start-up phase corresponding to the start of this phase.
  • the good quality of the spray jet obtained by the present invention allows proper engine operation from the start, which reduces pollutant emissions.
  • control means 7 comprise means for measuring, such as a sensor, the fuel pressure delivered into the rail 4 as well as means for comparison making it possible to compare the measured value with the threshold value stored in the control means 7.
  • the measurement means reconstitute the pressure value from an operating model stored in the control means, this model incorporating engine operating parameters.
  • the measuring means can be associated with the sensor.
  • the threshold value at time t 2 is determined and modulated by the control means 7 as a function of other engine parameters such as, for example, the engine temperature.
  • the engine has a positive ignition, it may also be advantageous not to order ignition as long as the injectors 5 are kept closed by the control means 7.
  • the threshold pressure is generally reached in three or four engine revolutions.
  • the starter used has mechanical characteristics making it possible to obtain the instant t 2 after a very short period, typically of the order of one second. .
  • threshold pressure can still be determined either directly at the exit of high pressure pump, either at the injectors.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fuel-Injection Apparatus (AREA)
  • Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)

Abstract

The petrol supply circuit comprises a high pressure pump assembly (2) supplying fuel to a fuel injector bank (4). A command unit (7) controls the pump and injector assemblies in relation to the starting up of the vehicle such that the fuel pressure supplied to the injectors is at a pre-determined value.

Description

La présente invention est relative à un circuit d'alimentation en carburant d'un moteur à combustion interne.The present invention relates to a circuit fuel supply for a combustion engine internal.

Plus particulièrement, l'invention s'applique aux moteurs à injection directe.More particularly, the invention applies to direct injection engines.

Les circuits d'alimentation habituellement rencontrés dans les moteurs à combustion interne de véhicules automobiles comprennent une pompe à haute pression, une rampe d'injecteurs qui est alimentée en carburant par l'intermédiaire de la pompe à haute pression et des moyens de commande du fonctionnement des injecteurs, les moyens de commande maintenant fermés les injecteurs pendant une fraction de la phase de démarrage du moteur et autorisant l'ouverture des injecteurs lorsque la pression dans la rampe d'injecteurs a atteint une valeur de seuil prédéterminée, les moyens de commande comprenant des moyens de mesure qui reconstituent la valeur de la pression à partir d'un modèle de fonctionnement incorporant des paramètres de fonctionnement du moteur.Power circuits usually encountered in internal combustion engines of motor vehicles include a high pump pressure, a rail of injectors which is supplied with fuel through the high pressure pump and means for controlling the operation of the injectors, the control means now closed the injectors during a fraction of the engine start-up phase and allowing the injectors to open when the pressure in the injector manifold has reached a threshold value predetermined, the control means comprising means which reconstitute the value of the pressure at from an operating model incorporating engine operating parameters.

Lorsque le moteur ne fonctionne pas, la pression en carburant à l'intérieur du circuit d'alimentation peut être faible du fait d'un arrêt prolongé ou parce qu'elle a été rendue intentionnellement faible pour éviter des fuites aux injecteurs lorsqu'ils sont à l'arrêt.When the engine is not running, the pressure in fuel inside the fuel system can be low due to prolonged shutdown or because it has been intentionally made weak to avoid leakage to injectors when stopped.

Pour obtenir un fonctionnement optimal des moteurs à combustion interne, il est nécessaire que les injecteurs envoient le carburant dans des cylindres du moteur sous la forme d'un jet de pulvérisation régulier. L'injection est d'autant meilleure que le carburant admis dans les injecteurs est à haute pression.To obtain optimal operation of internal combustion it is necessary that the injectors send fuel into engine cylinders under the form a regular spray pattern. The injection is all the better as the fuel admitted in the injectors is high pressure.

Or, lors de la phase de démarrage du moteur, l'établissement de la haute pression par la pompe à haute pression est gêné d'une part, par la compressibilité du carburant et d'autre part, par la dilatation du circuit d'alimentation.However, during the engine start-up phase, the establishment of high pressure by the high pump pressure is hampered on the one hand, by the compressibility of the fuel and on the other hand, by the expansion of the circuit feed.

La présente invention a pour but de remédier aux inconvénients précités en fournissant un circuit d'alimentation qui permette d'établir, dès le démarrage, une pression optimale du carburant dans les injecteurs lors du fonctionnement de ceux-ci.The object of the present invention is to remedy the aforementioned disadvantages in providing a circuit power supply which allows to establish, from the start, a optimal fuel pressure in the injectors when operation of these.

A cet effet, selon l'invention, un circuit d'alimentation du type précité, est essentiellement caractérisé en ce que la valeur de seuil est déterminée et modulée par les moyens de commande en fonction de paramètres de fonctionnement du moteur tels que la température.To this end, according to the invention, a circuit of the aforementioned type, is essentially characterized in that the threshold value is determined and modulated by the control means as a function of parameters engine operation such as temperature.

Ainsi, il est possible d'obtenir une bonne pulvérisation du carburant tout en utilisant une pompe à haute pression de dimensions raisonnables, qui est optimisée pour le fonctionnement nominal du moteur, permettant une faible consommation de puissance pour son entraínement et un faible échauffement du carburant ainsi qu'une bonne précision de contrôle du dosage de petites quantités de carburant nécessaires au moteur dans des conditions de faible charge.So it is possible to get good spraying fuel while using a pump high pressure of reasonable dimensions, which is optimized for nominal engine operation, allowing low power consumption for training and low fuel heating and good precision control of dosing of small amounts of fuel required by the engine in conditions of low load.

Le circuit d'alimentation suivant l'invention peut éventuellement comporter en outre une ou plusieurs des caractéristiques suivantes :

  • les moyens de commande comprennent des moyens de mesure de la pression de carburant dans la rampe et des moyens de comparaison de la valeur mesurée à la valeur de seuil ;
  • lors du démarrage du moteur, le nombre de tours de la pompe à haute pression est proportionnel au nombre de tours du moteur ;
  • la pompe à haute pression est une pompe à injection directe ; et
  • la pompe à injection directe à haute pression possède des caractéristiques correspondant au régime de fonctionnement nominal du moteur.
The supply circuit according to the invention may optionally further include one or more of the following characteristics:
  • the control means include means for measuring the fuel pressure in the rail and means for comparing the measured value with the threshold value;
  • when starting the engine, the number of revolutions of the high pressure pump is proportional to the number of revolutions of the engine;
  • the high pressure pump is a direct injection pump; and
  • the high pressure direct injection pump has characteristics corresponding to the nominal engine operating speed.

L'invention a en outre pour objet un moteur de véhicule automobile comprenant un circuit d'alimentation en carburant tel que défini ci-dessus et un démarreur dont les caractéristiques permettent d'entraíner le moteur à une vitesse suffisante pour permettre d'atteindre la valeur de pression de seuil de carburant dans un intervalle de temps réduit.The invention further relates to a motor for motor vehicle comprising a power supply circuit fuel as defined above and a starter whose features allow the engine to be driven at a sufficient speed to reach the value of fuel threshold pressure in a time interval reduced.

De manière préférée, l'intervalle de temps est sensiblement inférieur ou égal à une secondePreferably, the time interval is significantly less than or equal to one second

Un exemple de l'invention va maintenant être décrit en regard des dessins annexés, sur lesquels :

  • la figure 1 est une vue schématique du circuit d'alimentation selon la présente invention ; et
  • la figure 2 représente des diagrammes illustrant le fonctionnement du circuit d'alimentation de la figure 1.
An example of the invention will now be described with reference to the appended drawings, in which:
  • Figure 1 is a schematic view of the supply circuit according to the present invention; and
  • FIG. 2 represents diagrams illustrating the operation of the supply circuit of FIG. 1.

Le circuit d'alimentation 1 représenté à la figure 1 est destiné à alimenter en carburant un moteur à combustion interne d'un véhicule automobile. Ce circuit d'alimentation comprend une pompe à injection à haute pression 2 et une rampe 4 en aval de laquelle sont situés des injecteurs 5. La pompe 2 est alimentée en carburant à partir d'un réservoir (non représenté) par un conduit d'arrivée 3 selon le sens de la flèche F. La rampe 4 est alimentée en carburant à haute pression par un conduit de sortie 6 reliant la pompe 2 à la rampe 4. Les injecteurs 5 pulvérisent le carburant à l'intérieur de cylindres du moteur (non représentés) sous la forme de jets 8.The power circuit 1 shown in Figure 1 is intended to supply fuel to a combustion engine internal of a motor vehicle. This power circuit includes a high pressure injection pump 2 and a ramp 4 downstream of which are injectors 5. The pump 2 is supplied with fuel from a tank (not shown) by an inlet duct 3 in the direction of arrow F. Ramp 4 is supplied with high fuel pressure by an outlet pipe 6 connecting the pump 2 to the rail 4. The injectors 5 spray the fuel at the inside of engine cylinders (not shown) under the jet shape 8.

Lors des différentes étapes du cycle de fonctionnement du moteur à combustion interne, les injecteurs 5 sont contrôlés par des moyens de commande 7. Ces moyens de commande contrôlent également le fonctionnement de la pompe à haute pression 2.During the different stages of the operation of the internal combustion engine, injectors 5 are controlled by control means 7. These control means also control the high pressure pump operation 2.

La pompe à injection à haute pression 2 est par exemple une pompe dont la vitesse de rotation est liée à celle du moteur auquel elle est associée. Lors de la phase de démarrage du moteur, un démarreur connu en soi(non représenté) entraíne le moteur : la vitesse de rotation de la pompe est proportionnelle la vitesse de rotation du moteur. La pression de carburant délivrée par la pompe est alors insuffisante pour un bon fonctionnement des injecteurs 5.The high pressure injection pump 2 is by example a pump whose speed of rotation is linked to that of the engine with which it is associated. During the phase engine start, a starter known per se (not shown) drives the engine: the rotation speed of the pump is proportional to the speed of rotation of the engine. The fuel pressure delivered by the pump is then insufficient for proper functioning of the injectors 5.

Lorsque le moteur ne tourne pas, les injecteurs 5 sont fermés.When the engine is not running, the injectors 5 are closed.

La figure 2 montre que, lors de la phase de démarrage du moteur, un opérateur actionne le démarreur en un instant t1, ce qui entraíne le moteur à un régime Rd. Selon la présente invention, pendant cette phase, les moyens de commande 7 maintiennent la fermeture des injecteurs 5 de sorte que l'injection de carburant dans ces injecteurs est interdite. La pression de carburant délivrée par cette pompe augmente alors de façon continue à partir de l'instant t1 jusqu'en un instant t2. Cette augmentation est relativement lente du fait des phénomènes d'élasticité du circuit et de compressibilité du carburant. En l'instant t2, la pression atteint une valeur de seuil Ps. Cette valeur de seuil est jugée suffisante pour obtenir une bonne pulvérisation du carburant par les injecteurs 5. Les moyens de commande 7 autorisent alors l'ouverture des injecteurs 5 en cet instant t2. En pratique, les injecteurs 5 sont maintenus fermés pendant une fraction de la phase de démarrage correspondant au début de cette phase.Figure 2 shows that, during the engine starting phase, an operator actuates the starter at an instant t 1 , which drives the engine at a speed R d . According to the present invention, during this phase, the control means 7 keep the injectors 5 closed so that the injection of fuel into these injectors is prohibited. The fuel pressure delivered by this pump then increases continuously from time t 1 to time t 2 . This increase is relatively slow due to the phenomena of elasticity of the circuit and compressibility of the fuel. At time t 2 , the pressure reaches a threshold value P s . This threshold value is considered sufficient to obtain good spraying of the fuel by the injectors 5. The control means 7 then authorize the opening of the injectors 5 at this instant t 2 . In practice, the injectors 5 are kept closed for a fraction of the start-up phase corresponding to the start of this phase.

La bonne qualité du jet de pulvérisation obtenu par la présente invention permet un bon fonctionnement du moteur dès le démarrage, ce qui réduit les émissions de polluants.The good quality of the spray jet obtained by the present invention allows proper engine operation from the start, which reduces pollutant emissions.

Après l'instant t2, la pression de carburant délivrée par la pompe à injection 2 continue à augmenter régulièrement. Simultanément, le régime moteur augmente et l'action sur le démarreur est arrêtée en un instant t3. Le nombre de tours moteur augmente jusqu'à atteindre un régime nominal nécessaire au bon fonctionnement du véhicule à bord duquel il est installé.After time t 2 , the fuel pressure delivered by the injection pump 2 continues to increase regularly. Simultaneously, the engine speed increases and the action on the starter is stopped in an instant t 3 . The number of engine revolutions increases until reaching a nominal speed necessary for the proper functioning of the vehicle on board which it is installed.

Pour déterminer l'instant où la pression en carburant atteint la pression de seuil Ps, les moyens de commande 7 comprennent des moyens de mesure, tel qu'un capteur, de la pression de carburant délivrée dans la rampe 4 ainsi que des moyens de comparaison permettant de comparer la valeur mesurée à la valeur de seuil en mémoire dans les moyens de commande 7.To determine the instant when the fuel pressure reaches the threshold pressure P s , the control means 7 comprise means for measuring, such as a sensor, the fuel pressure delivered into the rail 4 as well as means for comparison making it possible to compare the measured value with the threshold value stored in the control means 7.

En variante, les moyens de mesure reconstituent la valeur de la pression à partir d'un modèle de fonctionnement en mémoire dans les moyens de commande, ce modèle incorporant des paramètres de fonctionnement du moteur. Les moyens de mesure peuvent être associés au capteur.As a variant, the measurement means reconstitute the pressure value from an operating model stored in the control means, this model incorporating engine operating parameters. The measuring means can be associated with the sensor.

Dans encore une autre variante, la valeur de seuil en l'instant t2 est déterminée et modulée par les moyens de commande 7 en fonction d'autres paramètres moteur tels que par exemple, la température du moteur.In yet another variant, the threshold value at time t 2 is determined and modulated by the control means 7 as a function of other engine parameters such as, for example, the engine temperature.

Dans le cas où le moteur est à allumage commandé, il pourra être également avantageux de ne pas commander l'allumage tant que les injecteurs 5 sont maintenus fermés par les moyens de commande 7.If the engine has a positive ignition, it may also be advantageous not to order ignition as long as the injectors 5 are kept closed by the control means 7.

La pression de seuil est généralement atteinte en trois ou quatre tours moteur. Afin de conserver le confort d'utilisation du véhicule lors du démarrage du moteur, le démarreur utilisé possède des caractéristiques mécaniques permettant d'obtenir l'instant t2 au bout d'une durée très courte, typiquement de l'ordre d'une seconde.The threshold pressure is generally reached in three or four engine revolutions. In order to maintain the comfort of using the vehicle when starting the engine, the starter used has mechanical characteristics making it possible to obtain the instant t 2 after a very short period, typically of the order of one second. .

On comprend par ailleurs que la pression de seuil peut encore être déterminée soit directement à la sortie de pompe à haute pression, soit au niveau des injecteurs.We also understand that the threshold pressure can still be determined either directly at the exit of high pressure pump, either at the injectors.

Claims (7)

Circuit d'alimentation en carburant d'un moteur à combustion interne comprenant une pompe à haute pression (2), une rampe (4) d'injecteurs (5) qui est alimentée en carburant par ladite pompe à haute pression (2) et de moyens de commande (7) du fonctionnement des injecteurs (5), les moyens de commande (7) maintenant fermés les injecteurs (5) pendant une fraction de la phase de démarrage du moteur et autorisant l'ouverture des injecteurs (5) lorsque la pression dans la rampe (4) d'injecteurs (5) a atteint une valeur de seuil (Ps) prédéterminée, les moyens de commande (7) comprenant des moyens de mesure qui reconstituent la valeur de la pression à partir d'un modèle de fonctionnement incorporant des paramètres de fonctionnement du moteur, caractérisé en ce que la valeur de seuil est déterminée et modulée par les moyens de commande (7) en fonction de paramètres de fonctionnement du moteur tels que la température.Fuel supply circuit of an internal combustion engine comprising a high pressure pump (2), a manifold (4) of injectors (5) which is supplied with fuel by said high pressure pump (2) and control means (7) for the operation of the injectors (5), the control means (7) keeping the injectors closed (5) during a fraction of the engine starting phase and authorizing the opening of the injectors (5) when the pressure in the manifold (4) of injectors (5) has reached a predetermined threshold value (P s ), the control means (7) comprising measurement means which reconstitute the value of the pressure from a model operating incorporating engine operating parameters, characterized in that the threshold value is determined and modulated by the control means (7) as a function of engine operating parameters such as temperature. Circuit d'alimentation en carburant selon la revendications 1, caractérisé en ce que les moyens de commande (7) comprennent des moyens de mesure de la pression de carburant dans la rampe (4) et des moyens de comparaison de la valeur mesurée à la valeur de seuil (Ps).Fuel supply circuit according to claim 1, characterized in that the control means (7) comprise means for measuring the fuel pressure in the rail (4) and means for comparing the measured value with the value threshold (P s ). Circuit d'alimentation en carburant selon la revendication 1 ou 2, caractérisé en ce que, lors du démarrage du moteur, le nombre de tours de la pompe à haute pression (2) est proportionnel au nombre de tours du moteur.Fuel supply system according to claim 1 or 2, characterized in that, when engine start, the number of high pump turns pressure (2) is proportional to the number of engine revolutions. Circuit d'alimentation en carburant selon la revendication 3, caractérisé en ce que la pompe à haute pression (2) est une pompe à injection directe. Fuel supply system according to claim 3, characterized in that the high-pressure pump pressure (2) is a direct injection pump. Circuit d'alimentation en carburant selon la revendication 4, caractérisé en ce que la pompe à injection directe à haute pression (2) possède des caractéristiques correspondant au régime de fonctionnement nominal du moteur.Fuel supply system according to claim 4, characterized in that the injection pump direct high pressure (2) has characteristics corresponding to the nominal engine operating speed. Moteur de véhicule automobile comprenant un circuit d'alimentation en carburant selon l'une quelconque des revendications 1 à 5 et un démarreur dont les caractéristiques permettent d'entraíner le moteur à une vitesse suffisante pour permettre d'atteindre la valeur de la pression de seuil de carburant dans un intervalle de temps réduit.Motor vehicle engine comprising a fuel system according to any one of claims 1 to 5 and a starter whose features allow the engine to be driven at a sufficient speed to reach the value of fuel threshold pressure in an interval of reduced time. Moteur de véhicule automobile selon la revendication 6, caractérisé en ce que l'intervalle de temps est sensiblement inférieur ou égal à une seconde.Motor vehicle engine according to claim 6, characterized in that the time interval is substantially less than or equal to one second.
EP19990403253 1998-12-24 1999-12-22 Fuel injection system for an internal combustion engine Expired - Lifetime EP1013914B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9816446A FR2787832B1 (en) 1998-12-24 1998-12-24 FUEL SUPPLY CIRCUIT OF AN INTERNAL COMBUSTION ENGINE
FR9816446 1998-12-24

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EP1013914A1 true EP1013914A1 (en) 2000-06-28
EP1013914B1 EP1013914B1 (en) 2003-07-09

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EP19990403253 Expired - Lifetime EP1013914B1 (en) 1998-12-24 1999-12-22 Fuel injection system for an internal combustion engine

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EP (1) EP1013914B1 (en)
DE (1) DE69909418T2 (en)
ES (1) ES2203035T3 (en)
FR (1) FR2787832B1 (en)

Cited By (2)

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Publication number Priority date Publication date Assignee Title
EP1321654A3 (en) * 2001-12-18 2004-04-07 Toyota Jidosha Kabushiki Kaisha High-pressure fuel supply system of an internal combustion engine and control method thereof
EP2133540A1 (en) * 2007-03-05 2009-12-16 Yanmar Co., Ltd. Fuel injection control device for diesel engine

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2991389A1 (en) * 2012-06-05 2013-12-06 Peugeot Citroen Automobiles Sa Method for controlling internal combustion engine of car, involves opening injectors fitting to cylinders, and forecasting number of pump strokes needed to reach threshold pressure from bearing pressure

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EP1321654A3 (en) * 2001-12-18 2004-04-07 Toyota Jidosha Kabushiki Kaisha High-pressure fuel supply system of an internal combustion engine and control method thereof
US6761151B2 (en) 2001-12-18 2004-07-13 Toyota Jidosha Kabushiki Kaisha High-pressure fuel supply system of an internal combustion engine and control method thereof
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EP2133540A4 (en) * 2007-03-05 2013-08-07 Yanmar Co Ltd Fuel injection control device for diesel engine

Also Published As

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FR2787832A1 (en) 2000-06-30
DE69909418D1 (en) 2003-08-14
ES2203035T3 (en) 2004-04-01
DE69909418T2 (en) 2004-04-22
FR2787832B1 (en) 2001-02-23
EP1013914B1 (en) 2003-07-09

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