FR2911373A1 - Direct injection heat engine e.g. oil engine, has piston with bowl shaped cavity for deflecting and delivering fuel jets towards preheater plug, where plug has flat heating surface located parallel to wall of cylinder head - Google Patents

Direct injection heat engine e.g. oil engine, has piston with bowl shaped cavity for deflecting and delivering fuel jets towards preheater plug, where plug has flat heating surface located parallel to wall of cylinder head Download PDF

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Publication number
FR2911373A1
FR2911373A1 FR0752691A FR0752691A FR2911373A1 FR 2911373 A1 FR2911373 A1 FR 2911373A1 FR 0752691 A FR0752691 A FR 0752691A FR 0752691 A FR0752691 A FR 0752691A FR 2911373 A1 FR2911373 A1 FR 2911373A1
Authority
FR
France
Prior art keywords
plug
piston
cylinder head
cylinder
engine
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
FR0752691A
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French (fr)
Inventor
Philippe Arribard
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Renault SAS
Original Assignee
Renault SAS
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Renault SAS filed Critical Renault SAS
Priority to FR0752691A priority Critical patent/FR2911373A1/en
Publication of FR2911373A1 publication Critical patent/FR2911373A1/en
Pending legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02P—IGNITION, OTHER THAN COMPRESSION IGNITION, FOR INTERNAL-COMBUSTION ENGINES; TESTING OF IGNITION TIMING IN COMPRESSION-IGNITION ENGINES
    • F02P19/00—Incandescent ignition, e.g. during starting of internal combustion engines; Combination of incandescent and spark ignition
    • F02P19/02—Incandescent ignition, e.g. during starting of internal combustion engines; Combination of incandescent and spark ignition electric, e.g. layout of circuits of apparatus having glowing plugs
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B23/00—Other engines characterised by special shape or construction of combustion chambers to improve operation
    • F02B23/02—Other engines characterised by special shape or construction of combustion chambers to improve operation with compression ignition
    • F02B23/06—Other engines characterised by special shape or construction of combustion chambers to improve operation with compression ignition the combustion space being arranged in working piston
    • F02B23/0645—Details related to the fuel injector or the fuel spray
    • F02B23/0648—Means or methods to improve the spray dispersion, evaporation or ignition
    • F02B23/0651—Means or methods to improve the spray dispersion, evaporation or ignition the fuel spray impinging on reflecting surfaces or being specially guided throughout the combustion space
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B23/00—Other engines characterised by special shape or construction of combustion chambers to improve operation
    • F02B23/02—Other engines characterised by special shape or construction of combustion chambers to improve operation with compression ignition
    • F02B23/06—Other engines characterised by special shape or construction of combustion chambers to improve operation with compression ignition the combustion space being arranged in working piston
    • F02B23/0645—Details related to the fuel injector or the fuel spray
    • F02B23/0654—Thermal treatments, e.g. with heating elements or local cooling
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B23/00—Other engines characterised by special shape or construction of combustion chambers to improve operation
    • F02B23/02—Other engines characterised by special shape or construction of combustion chambers to improve operation with compression ignition
    • F02B23/06—Other engines characterised by special shape or construction of combustion chambers to improve operation with compression ignition the combustion space being arranged in working piston
    • F02B23/0645—Details related to the fuel injector or the fuel spray
    • F02B23/0669—Details related to the fuel injector or the fuel spray having multiple fuel spray jets per injector nozzle
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B23/00—Other engines characterised by special shape or construction of combustion chambers to improve operation
    • F02B23/02—Other engines characterised by special shape or construction of combustion chambers to improve operation with compression ignition
    • F02B23/06—Other engines characterised by special shape or construction of combustion chambers to improve operation with compression ignition the combustion space being arranged in working piston
    • F02B23/0672—Omega-piston bowl, i.e. the combustion space having a central projection pointing towards the cylinder head and the surrounding wall being inclined towards the cylinder center axis
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B2275/00—Other engines, components or details, not provided for in other groups of this subclass
    • F02B2275/14—Direct injection into combustion chamber
    • 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
    • F02D41/064—Introducing corrections for particular operating conditions for engine starting or warming up for starting at cold start
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/12—Improving ICE efficiencies

Abstract

The engine has a piston (11) slidably mounted in a cylinder (10), and a cylinder head (12) closing the cylinder by delimiting a combustion chamber (13) between a wall of the head and the piston. An injector (14) injects fuel in the form of jets in the combustion chamber. A preheater plug (15) heats a surface inside the chamber. The piston has a bowl shaped cavity (110) for deflecting and delivering the fuel jets towards the preheater plug. The plug has a flat heating surface (150) located parallel to the wall of the cylinder head.

Description

Moteur thermique à injection directe comportant des moyens deDirect injection thermal engine with means of

préchauffage. L'invention concerne un moteur thermique à injection directe comportant des moyens de préchauffage pour faciliter sa mise en route. Les moteurs à injection directe, en particulier les moteurs Diesel, comportent des moyens de préchauffage pour faciliter le démarrage. Ces moyens de chauffage comportent une bougie de préchauffage faisant saillie dans la chambre de combustion. Une surface de chauffe, exposée dans la chambre, est apte à être mise en température par la circulation d'un courant électrique. Lorsque le moteur est à température stabilisée, le carburant injecté dans la chambre de combustion rencontre de l'air suffisamment chaud pour s'auto-enflammer. Cependant, lorsque le moteur est froid et dans certaines circonstances, l'air n'est pas suffisamment chaud. Dans ces cas, la surface de chauffe est mise en température, de telle sorte que le carburant qui est injecté dans sa direction est vaporisé et l'auto-inflammation se produit. Le document FR 2 819 019 montre un tel moteur. On propose cependant un moteur dans lequel le taux de compression est réduit et l'injection est dirigée vers des moyens de déflexion intégrés au piston. Un tel moteur vise à émettre moins de polluants tel que de l'oxyde d'azote. Cependant, du fait du taux de compression réduit, la température de l'air au moment de l'injection est réduite. De plus, l'injection est dirigée vers le piston et une bougie de préchauffage classique ne serait pas atteinte par le jet de carburant injecté. Ces problèmes cumulés rendent difficile le démarrage d'un tel moteur à basse température. C'est donc un objectif de l'invention de proposer un moteur thermique à injection directe, dont le piston comporte des moyens de déflexion des jets de carburant, qui soit apte à démarrer facilement, même à basse température. Avec ces objectifs en vue, l'invention a pour objet un moteur thermique à injection directe comportant au moins un cylindre, un piston monté coulissant dans le cylindre, une culasse fermant le cylindre en délimitant une chambre de combustion entre une paroi de culasse et le piston, un injecteur apte à injecter du carburant sous forme de jets dans la chambre de combustion, des moyens de préchauffage aptes à chauffer une surface à l'intérieur de la chambre de combustion, le piston comportant des moyens de déflexion aptes à dévier les jets de carburant. Les moyens de déflexion sont aptes à dévier les jets vers les moyens de préchauffage et les moyens de préchauffage comportent au moins une surface de chauffe, chaque surface de chauffe étant sensiblement plane et parallèle à la paroi de culasse. En plaçant la ou les surfaces de chauffe parallèlement à la paroi de culasse, les jets, après avoir été déviés, viennent en contact avec la surface de chauffe sensiblement perpendiculairement à celle-ci. La rencontre du carburant et de la surface chaude est ainsi améliorée. De plus, les moyens de préchauffage ne font pas saillie dans la chambre de combustion. On constate que de ce fait, la génération de polluants est diminuée. Ceci tient probablement à la disparition de perturbations aérodynamiques dues à la protubérance de la bougie de préchauffage. Selon une disposition particulière, les moyens de préchauffage comportent une pluralité de surfaces de chauffe réparties sur un anneau centré sur l'injecteur. En augmentant le nombre de surfaces de chauffe, on augmente la quantité de carburant qui est vaporisée par le contact avec les surfaces de chauffe. On repousse ainsi les limites de température pour le démarrage du moteur.  preheating. The invention relates to a direct injection heat engine comprising preheating means to facilitate its start. Direct injection engines, in particular diesel engines, include preheating means to facilitate starting. These heating means comprise a glow plug projecting into the combustion chamber. A heating surface, exposed in the chamber, is adapted to be heated by the circulation of an electric current. When the engine is at a steady temperature, the fuel injected into the combustion chamber encounters air that is hot enough to self-ignite. However, when the engine is cold and under certain circumstances, the air is not hot enough. In these cases, the heating surface is warmed up, so that the fuel that is injected in its direction is vaporized and the auto-ignition occurs. Document FR 2 819 019 shows such a motor. However, an engine is proposed in which the compression ratio is reduced and the injection is directed towards deflection means integrated into the piston. Such an engine aims to emit fewer pollutants such as nitrogen oxide. However, because of the reduced compression ratio, the temperature of the air at the time of injection is reduced. In addition, the injection is directed towards the piston and a conventional glow plug would not be reached by the jet of fuel injected. These cumulative problems make it difficult to start such a motor at low temperatures. It is therefore an object of the invention to provide a direct injection heat engine, whose piston comprises means for deflecting the fuel jets, which is able to start easily, even at low temperatures. With these objectives in view, the subject of the invention is a direct injection heat engine comprising at least one cylinder, a piston slidably mounted in the cylinder, a cylinder head closing the cylinder by delimiting a combustion chamber between a cylinder head wall and the cylinder. piston, an injector capable of injecting fuel in the form of jets into the combustion chamber, preheating means capable of heating a surface inside the combustion chamber, the piston comprising deflection means capable of deflecting the jets fuel. The deflection means are able to deflect the jets to the preheating means and the preheating means comprise at least one heating surface, each heating surface being substantially flat and parallel to the cylinder head wall. By placing the heating surface (s) parallel to the cylinder wall, the jets, after having been deflected, come into contact with the heating surface substantially perpendicular thereto. The meeting of the fuel and the hot surface is thus improved. In addition, the preheating means do not project into the combustion chamber. As a result, the generation of pollutants is reduced. This is probably due to the disappearance of aerodynamic disturbances due to the protuberance of the glow plug. According to a particular arrangement, the preheating means comprise a plurality of heating surfaces distributed over a ring centered on the injector. By increasing the number of heating surfaces, the amount of fuel vaporized by the contact with the heating surfaces is increased. This pushes the temperature limits for starting the engine.

La surface de chauffe peut être portée par une bougie fixée dans la culasse soit par vissage, soit par montage serré sur la paroi de culasse. L'invention sera mieux comprise et d'autres particularités et avantages apparaîtront à la lecture de la description qui va suivre, la description faisant référence aux dessins annexés parmi lesquels : - la figure 1 est une vue en coupe d'un moteur conforme à l'invention ; - la figure 2 est une vue de la paroi de culasse selon l'axe du cylindre. Un moteur 1 conforme à l'invention est représenté sur les figures 1 et 2. Le moteur 1, du type à combustion interne à allumage par compression, comporte un cylindre 10 dans lequel un piston 11 est monté coulissant par l'intermédiaire d'un embiellage, non représenté. Une culasse 12 ferme le cylindre 10 en délimitant une chambre de combustion 13 entre une paroi de culasse 120 et le piston 11. La culasse 12 comporte de manière classique quatre soupapes 13. La culasse 12 est traversée par un injecteur 14 apte à injecter du carburant sous forme de jets J dans la chambre de combustion 13. L'injecteur 14 est par exemple placé dans l'axe du cylindre 10.  The heating surface can be carried by a spark plug fixed in the cylinder head either by screwing or by tight fitting on the cylinder head wall. The invention will be better understood and other features and advantages will appear on reading the description which follows, the description referring to the appended drawings among which: - Figure 1 is a sectional view of a motor according to the invention; - Figure 2 is a view of the cylinder wall along the axis of the cylinder. A motor 1 according to the invention is shown in FIGS. 1 and 2. The engine 1, of the compression-ignition internal combustion type, comprises a cylinder 10 in which a piston 11 is slidably mounted via a crankshaft, not shown. A cylinder head 12 closes the cylinder 10 delimiting a combustion chamber 13 between a cylinder head wall 120 and the piston 11. The cylinder head 12 conventionally comprises four valves 13. The cylinder head 12 is traversed by an injector 14 able to inject fuel in the form of jets J in the combustion chamber 13. The injector 14 is for example placed in the axis of the cylinder 10.

La chambre de combustion 13 s'étend essentiellement dans une cavité ménagée à la surface du piston 11. La cavité a une forme de cuvette 110 dont la partie centrale fait saillie selon une forme en cône 111 avec un sommet orienté vers la culasse 12 et sur l'axe du cylindre 10. L'injecteur 14 est prévu pour générer six jets J de carburants, selon des rayons régulièrement répartis, comme on peut le voir sur la figure 2. Les jets J sont orientés sensiblement le long de la surface du cône 111. La cavité constitue des moyens de déflexion aptes à dévier les jets J de carburant, comme on le verra mieux par la suite. Le moteur 1 comporte en outre des moyens de préchauffage comportant quatre bougies 15 fixées à la paroi de la culasse 12. Les bougies 15 sont réparties sur un anneau centré sur l'injecteur 14 et placées entre les ouvertures des soupapes 13. Chaque bougie 15 comporte une surface de chauffe 150 sensiblement plane et parallèle à la paroi de culasse 120, faisant face au piston 11. La bougie 15 comporte une résistance électrique, non représentée, apte à chauffer la surface de chauffe 150 par effet Joule.  The combustion chamber 13 extends essentially into a cavity formed on the surface of the piston 11. The cavity has a cup-like shape 110 whose central part projects in a conical shape 111 with an apex oriented towards the cylinder head 12 and on the axis of the cylinder 10. The injector 14 is designed to generate six jets J fuels, according to regularly distributed rays, as can be seen in Figure 2. The jets J are oriented substantially along the surface of the cone 111. The cavity constitutes deflection means capable of deflecting fuel jets J, as will be seen later. The engine 1 further comprises preheating means comprising four spark plugs 15 fixed to the wall of the cylinder head 12. The spark plugs 15 are distributed over a ring centered on the injector 14 and placed between the openings of the valves 13. Each spark plug 15 comprises a heating surface 150 substantially flat and parallel to the cylinder head wall 120, facing the piston 11. The spark plug 15 comprises an electrical resistance, not shown, suitable for heating the heating surface 150 by Joule effect.

Les bougies 15 sont alimentées chacune par un conducteur 16 électrique traversant la culasse vers chacune des bougies 15. Chaque bougie 15 a la forme d'une pastille insérée par force dans un logement de la culasse 12. Cependant, elle pourrait avoir la forme d'une vis vissée dans la culasse et dont la tête porterait la surface de chauffe 150. Lorsque le moteur 1 fonctionne, le piston 11 se déplace en coulissant dans le cylindre 10. En se rapprochant de la culasse 12, il comprime de l'air. Il se déplace jusque dans la position telle que représentée sur la figure 1, appelée point mort haut. A ce moment, l'injecteur 14 procède à une injection de carburant sous haute pression. Le carburant est concentré dans les jets J qui longent le cône 111 et qui suivent la cuvette 110 pour être déviés vers la culasse 12, vers l'anneau sur lequel les bougies 15 sont réparties, comme le montrent les flèches F1 sur la figure 1. La portion de carburant qui atteint les bougies 15 est vaporisée si les bougies 15 ont été préchauffées par un courant électrique amené par le conducteur 16 et repartant par la culasse 12.  The candles 15 are each powered by an electrical conductor 16 passing through the cylinder head to each of the candles 15. Each candle 15 has the shape of a chip inserted by force in a housing of the cylinder head 12. However, it could have the shape of a screw screwed into the cylinder head and whose head would carry the heating surface 150. When the engine 1 operates, the piston 11 moves slidably in the cylinder 10. As it approaches the cylinder head 12, it compresses air. It moves to the position as shown in Figure 1, called top dead center. At this time, the injector 14 proceeds to an injection of fuel under high pressure. The fuel is concentrated in the jets J which follow the cone 111 and which follow the bowl 110 to be deflected towards the cylinder head 12, to the ring on which the candles 15 are distributed, as shown by the arrows F1 in FIG. The portion of fuel that reaches the spark plugs 15 is vaporized if the spark plugs 15 have been preheated by an electric current supplied by the conductor 16 and passing through the cylinder head 12.

Claims (4)

REVENDICATIONS 1. Moteur thermique à injection directe comportant au moins un cylindre (10), un piston (11) monté coulissant dans le cylindre (10), une culasse (12) fermant le cylindre (10) en délimitant une chambre de combustion (13) entre une paroi de culasse (12) et le piston (11), un injecteur (14) apte à injecter du carburant sous forme de jets (J) dans la chambre de combustion (13), des moyens de préchauffage (15) aptes à chauffer une surface à l'intérieur de la chambre de combustion (13), le piston (11) comportant des moyens de déflexion aptes à dévier les jets (J) de carburant, le moteur étant caractérisé en ce que les moyens de déflexion (110) sont aptes à dévier les jets (J) vers les moyens de préchauffage (15) et en ce que les moyens de préchauffage (15) comportent au moins une surface de chauffe (150), chaque surface de chauffe (150) étant sensiblement plane et parallèle à la paroi de culasse (12).  1. Direct injection thermal engine comprising at least one cylinder (10), a piston (11) slidably mounted in the cylinder (10), a cylinder head (12) closing the cylinder (10) defining a combustion chamber (13) between a cylinder head wall (12) and the piston (11), an injector (14) capable of injecting fuel in the form of jets (J) into the combustion chamber (13), preheating means (15) suitable for heating a surface inside the combustion chamber (13), the piston (11) having deflection means adapted to deflect the jets (J) of fuel, the engine being characterized in that the deflection means (110) ) are capable of deflecting the jets (J) towards the preheating means (15) and in that the preheating means (15) comprise at least one heating surface (150), each heating surface (150) being substantially flat and parallel to the cylinder wall (12). 2. Moteur selon la revendication 1, dans lequel les moyens de préchauffage (15) comportent une pluralité de surfaces de chauffe (150) réparties sur un anneau centré sur l'injecteur (14).  2. Motor according to claim 1, wherein the preheating means (15) comprise a plurality of heating surfaces (150) distributed over a ring centered on the injector (14). 3. Moteur selon la revendication 1, dans lequel la surface de chauffe (150) est portée par une bougie (15) fixée dans la culasse (12) par vissage.  3. Motor according to claim 1, wherein the heating surface (150) is carried by a candle (15) fixed in the yoke (12) by screwing. 4. Moteur selon la revendication 1, dans lequel la surface de chauffe (150) est portée par une7 bougie (15) fixée par montage serré sur la paroi de culasse (12).  The engine of claim 1, wherein the heating surface (150) is carried by a spark plug (15) fastened tightly to the cylinder wall (12).
FR0752691A 2007-01-16 2007-01-16 Direct injection heat engine e.g. oil engine, has piston with bowl shaped cavity for deflecting and delivering fuel jets towards preheater plug, where plug has flat heating surface located parallel to wall of cylinder head Pending FR2911373A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR0752691A FR2911373A1 (en) 2007-01-16 2007-01-16 Direct injection heat engine e.g. oil engine, has piston with bowl shaped cavity for deflecting and delivering fuel jets towards preheater plug, where plug has flat heating surface located parallel to wall of cylinder head

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0752691A FR2911373A1 (en) 2007-01-16 2007-01-16 Direct injection heat engine e.g. oil engine, has piston with bowl shaped cavity for deflecting and delivering fuel jets towards preheater plug, where plug has flat heating surface located parallel to wall of cylinder head

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FR2911373A1 true FR2911373A1 (en) 2008-07-18

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2610459A2 (en) 2011-12-28 2013-07-03 Robert Bosch Gmbh Direct injection internal combustion engine and fuel injection valve

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58128416A (en) * 1982-01-27 1983-08-01 Kubota Ltd Direct injection type diesel engine
JPS63176619A (en) * 1987-01-15 1988-07-20 Nippon Clean Engine Lab Co Ltd Heat surface ignition driving system for direct-injection type impact diffuse stratified burning internal combustion engine
JPS63186912A (en) * 1987-01-29 1988-08-02 Mazda Motor Corp Direct injection type diesel engine
EP0485610A1 (en) * 1990-06-04 1992-05-20 Nippon Clean Engine Research Institute Co., Ltd. Heated surface fuel striking ignition type internal combustion engine and method of heated surface fuel striking ignition
JPH0742560A (en) * 1993-08-03 1995-02-10 Agency Of Ind Science & Technol Combustion chamber for methanol engine
WO2003036061A1 (en) * 2001-10-04 2003-05-01 Robert Bosch Gmbh Auxiliary starter agent and combustion chamber
FR2834002A1 (en) * 2001-12-20 2003-06-27 Renault Internal combustion engine with compression ignition has combustion chamber defined on one side by top of piston and on other by lower wall of cylinder head having recess with fuel injection nozzle and spark plug opening into same
WO2004031554A1 (en) * 2002-10-02 2004-04-15 Westport Research Inc. Direct injection combustion chamber geometry

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58128416A (en) * 1982-01-27 1983-08-01 Kubota Ltd Direct injection type diesel engine
JPS63176619A (en) * 1987-01-15 1988-07-20 Nippon Clean Engine Lab Co Ltd Heat surface ignition driving system for direct-injection type impact diffuse stratified burning internal combustion engine
JPS63186912A (en) * 1987-01-29 1988-08-02 Mazda Motor Corp Direct injection type diesel engine
EP0485610A1 (en) * 1990-06-04 1992-05-20 Nippon Clean Engine Research Institute Co., Ltd. Heated surface fuel striking ignition type internal combustion engine and method of heated surface fuel striking ignition
JPH0742560A (en) * 1993-08-03 1995-02-10 Agency Of Ind Science & Technol Combustion chamber for methanol engine
WO2003036061A1 (en) * 2001-10-04 2003-05-01 Robert Bosch Gmbh Auxiliary starter agent and combustion chamber
FR2834002A1 (en) * 2001-12-20 2003-06-27 Renault Internal combustion engine with compression ignition has combustion chamber defined on one side by top of piston and on other by lower wall of cylinder head having recess with fuel injection nozzle and spark plug opening into same
WO2004031554A1 (en) * 2002-10-02 2004-04-15 Westport Research Inc. Direct injection combustion chamber geometry

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2610459A2 (en) 2011-12-28 2013-07-03 Robert Bosch Gmbh Direct injection internal combustion engine and fuel injection valve
DE102011090005A1 (en) 2011-12-28 2013-07-04 Robert Bosch Gmbh Direct injection internal combustion engine and fuel injection valve

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