FR2879259A1 - Combustion chamber for e.g. direct injection diesel engine, has piston whose top face has peripheral rim comprising slots, connected to inner rim by axial shoulder, raised with respect to inner rim and closer to cylinder head - Google Patents

Combustion chamber for e.g. direct injection diesel engine, has piston whose top face has peripheral rim comprising slots, connected to inner rim by axial shoulder, raised with respect to inner rim and closer to cylinder head Download PDF

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Publication number
FR2879259A1
FR2879259A1 FR0413189A FR0413189A FR2879259A1 FR 2879259 A1 FR2879259 A1 FR 2879259A1 FR 0413189 A FR0413189 A FR 0413189A FR 0413189 A FR0413189 A FR 0413189A FR 2879259 A1 FR2879259 A1 FR 2879259A1
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FR
France
Prior art keywords
cylinder
cylinder head
peripheral
ring
piston
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.)
Withdrawn
Application number
FR0413189A
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French (fr)
Inventor
Bruno Argueyrolles
Noboyuki Sakushima
Hamid Lahjaily
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 FR0413189A priority Critical patent/FR2879259A1/en
Publication of FR2879259A1 publication Critical patent/FR2879259A1/en
Withdrawn legal-status Critical Current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
    • 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
    • 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
    • F02B23/0678—Unconventional, complex or non-rotationally symmetrical shapes of the combustion space, e.g. flower like, having special shapes related to the orientation of the fuel spray jets
    • F02B23/0693—Unconventional, complex or non-rotationally symmetrical shapes of the combustion space, e.g. flower like, having special shapes related to the orientation of the fuel spray jets the combustion space consisting of step-wise widened multiple zones of different depth
    • 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
    • F02B2275/40—Squish effect
    • 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
    • F02B23/0618—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 having in-cylinder means to influence the charge motion
    • F02B23/0621—Squish flow
    • 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
    • F02B23/0618—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 having in-cylinder means to influence the charge motion
    • F02B23/0624—Swirl flow
    • 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 chamber has a piston (2) slidably mounted in a cylinder (1) and presenting a top face (20) delimiting, with an inner side of a cylinder head (3), a chamber in the cylinder. The top face has an inner rim radially arranged between a central recess (21) and a peripheral rim (22) connected to the inner rim by an axial shoulder (24). The peripheral rim has slots (221), and is raised with respect to the inner rim and closer to the head.

Description

CHAMBRE DE COMBUSTION POUR MOTEUR THERMIQUE,COMBUSTION CHAMBER FOR THERMAL MOTOR,

A EFFET TURBULENT ACCRU.INCREASED TURBULENT EFFECT.

L'invention concerne, de façon générale, la 5 conception des moteurs thermiques.  The invention relates generally to the design of heat engines.

Plus précisément, l'invention concerne une chambre de combustion pour moteur thermique, notamment pour moteur diesel à injection directe, comprenant un cylindre, un piston, une culasse, et des soupapes montées mobiles dans la culasse, la culasse se raccordant à une extrémité du cylindre par un plan de joint étanche, le piston étant monté axialement coulissant dans le cylindre et présentant une face frontale contribuant avec la culasse à délimiter la chambre dans le cylindre, la face frontale du piston présentant un bol central, une couronne périphérique, et une couronne interne disposée radialement entre le bol et la couronne périphérique, et la couronne périphérique étant plus avancée que la couronne interne dans une direction axiale allant du bol central vers le plan de joint.  More specifically, the invention relates to a combustion chamber for a heat engine, especially for direct injection diesel engine, comprising a cylinder, a piston, a cylinder head, and mounted valves movable in the cylinder head, the cylinder head connecting to one end of the cylinder. cylinder by a sealing plane, the piston being mounted axially sliding in the cylinder and having a front face contributing with the cylinder head to define the chamber in the cylinder, the end face of the piston having a central bowl, a peripheral ring, and a inner ring disposed radially between the bowl and the peripheral ring, and the peripheral ring being more advanced than the inner ring in an axial direction from the central bowl to the joint plane.

Une telle chambre est par exemple connue de l'homme du métier par le brevet US 3 954 089.  Such a chamber is for example known to those skilled in the art by US Patent 3,954,089.

Dans les moteurs à combustion interne, on appelle "zones de chasse" les zones situées entre la périphérie 25 du piston et la face inférieure de la culasse.  In internal combustion engines, the "hunting zones" are the areas between the periphery of the piston and the lower face of the cylinder head.

Lorsque le piston se rapproche de son point mort haut, l'air situé dans les zones de chasse est renvoyé vers le centre de la chambre de combustion et vers le bol.  As the piston approaches its top dead center, the air in the flush zones is returned to the center of the combustion chamber and to the bowl.

Inversement, lorsque le piston s'écarte de son point mort haut, l'air situé au centre de la chambre de combustion et dans le bol est aspiré vers les zones de chasse.  Conversely, when the piston deviates from its top dead center, the air located in the center of the combustion chamber and in the bowl is sucked to the hunting areas.

De plus, un mouvement de rotation de l'écoulement, dont l'intensité augmente à distance croissante de l'axe longitudinal du cylindre, se superpose à l'écoulement radial ou "de chasse".  In addition, a rotational movement of the flow, whose intensity increases at increasing distance from the longitudinal axis of the cylinder, is superimposed on the radial or "flush" flow.

Dans de tels moteurs, et en particulier dans les moteurs Diesel, une partie de la combustion se produit dans les zones de chasse lorsque le piston s'approche de son point mort haut ou s'en écarte.  In such engines, and in particular in diesel engines, part of the combustion occurs in the hunting zones when the piston approaches its top dead center or departs from it.

Le brevet américain précité, US 3 954 089, propose des moyens visant à augmenter la chasse radiale des gaz en prévoyant sur la face frontale du piston une couronne périphérique disposée à plus grande proximité de la face inférieure de la culasse que la couronne interne.  The aforementioned US patent, US Pat. No. 3,954,089, proposes means for increasing the radial flushing of gases by providing on the front face of the piston a peripheral ring disposed closer to the lower face of the yoke than the inner ring.

La combustion dans les zones périphériques reste néanmoins peu efficace.  Combustion in peripheral areas is nevertheless not very effective.

L'invention, qui se situe dans ce contexte et qui s'appuie sur l'identification des phénomènes en jeu, a pour but de proposer une chambre de combustion présentant une combustion plus efficace dans les zones de chasse.  The invention, which is in this context and which is based on the identification of the phenomena involved, aims to provide a combustion chamber with a more efficient combustion in hunting areas.

A cette fin, la chambre de l'invention, par ailleurs conforme à la définition générique qu'en donne le préambule ci-dessus, est essentiellement caractérisée en ce que la couronne périphérique se raccorde à la couronne interne par un épaulement axial.  To this end, the chamber of the invention, moreover in accordance with the generic definition given in the preamble above, is essentially characterized in that the peripheral ring connects to the inner ring by an axial shoulder.

Comme les expériences l'ont confirmé, la présence d'un tel épaulement crée, dans les zones de chasse, des micro-turbulences propices au développement de la combustion, l'effet de cet épaulement pouvant être renforcé en prévoyant des créneaux sur la couronne périphérique.  As the experiments have confirmed, the presence of such a shoulder creates, in hunting areas, micro-turbulence conducive to the development of combustion, the effect of this shoulder can be reinforced by providing slots on the crown peripheral.

D'autres caractéristiques et avantages de l'invention ressortiront clairement de la description qui en est faite ci-après, à titre indicatif et nullement limitatif, en référence aux dessins annexés, dans lesquels: la figure 1 est une vue en coupe d'une chambre de combustion connue; -la figure 2 est une vue de dessus d'un piston utilisable dans une chambre de combustion conforme à 10 l'invention; - la figure 3 est une vue en coupe partielle d'un piston conforme à un premier mode de réalisation et utilisable dans une chambre de combustion selon l'invention; et - la figure 4 est une vue en coupe partielle d'un piston conforme à un second mode de réalisation et utilisable dans une chambre de combustion selon l'invention.  Other characteristics and advantages of the invention will emerge clearly from the description which is given hereinafter, by way of indication and in no way limiting, with reference to the appended drawings, in which: FIG. 1 is a sectional view of a known combustion chamber; FIG. 2 is a view from above of a piston that can be used in a combustion chamber according to the invention; - Figure 3 is a partial sectional view of a piston according to a first embodiment and used in a combustion chamber according to the invention; and - Figure 4 is a partial sectional view of a piston according to a second embodiment and used in a combustion chamber according to the invention.

Comme annoncé précédemment, l'invention concerne une chambre de combustion pour moteur thermique, notamment pour moteur diesel à injection directe, comprenant de façon connue (figure 1) un cylindre 1, un piston 2, une culasse 3, et des soupapes 4.  As previously announced, the invention relates to a combustion chamber for a heat engine, in particular for a direct injection diesel engine, comprising in a known manner (FIG. 1) a cylinder 1, a piston 2, a cylinder head 3, and valves 4.

La culasse 3 se raccorde à l'extrémité supérieure du cylindre 1 par un plan de joint étanche 5, la face inférieure de la culasse 3 obturant ainsi la chambre de combustion du côté de l'extrémité supérieure du cylindre 1.  The yoke 3 is connected to the upper end of the cylinder 1 by a sealing plane 5, the lower face of the yoke 3 thus closing the combustion chamber on the side of the upper end of the cylinder 1.

Les soupapes 4 sont montées mobiles dans la culasse 30 pour faire communiquer sélectivement la chambre avec une pipe d'admission 7 et une pipe d'échappement 8.  The valves 4 are movably mounted in the cylinder head 30 to selectively communicate the chamber with an intake pipe 7 and an exhaust pipe 8.

Un injecteur 6 est également logé dans la culasse 3 pour assurer l'injection de carburant dans la chambre.  An injector 6 is also housed in the cylinder head 3 to ensure fuel injection into the chamber.

Le piston 2 est monté axialement coulissant dans le cylindre 1, dans lequel il délimite la chambre de combustion du côté opposé à celui de la culasse 3.  The piston 2 is mounted axially slidably in the cylinder 1, in which it delimits the combustion chamber on the opposite side to that of the cylinder head 3.

La chambre de combustion est par ailleurs obturée de façon étanche au moyen de segments 25 portés par le piston sur sa face latérale cylindrique.  The combustion chamber is also sealed by means of segments 25 carried by the piston on its cylindrical side face.

La face frontale 20 du piston présente, comme illustré dans le brevet antérieur précité, US 3 954 089, un bol central 21, une couronne périphérique 22, et une couronne interne 23.  The front face 20 of the piston has, as illustrated in the aforementioned prior patent US Pat. No. 3,954,089, a central bowl 21, a peripheral ring 22, and an inner ring 23.

La couronne interne 23 est disposée radialement entre le bol 21 et la couronne périphérique 22, et la couronne périphérique 22 est surélevée par rapport à la couronne interne 23 c'est-à-dire plus proche de la culasse.  The inner ring 23 is disposed radially between the bowl 21 and the peripheral ring 22, and the peripheral ring 22 is raised relative to the inner ring 23, that is to say closer to the cylinder head.

Selon l'invention, la couronne périphérique 22 se raccorde à la couronne interne 23 par un épaulement axial 20 24.  According to the invention, the peripheral ring 22 is connected to the inner ring 23 by an axial shoulder 24.

Pour augmenter les turbulences en périphérie du piston, la couronne périphérique 22 peut par ailleurs présenter des créneaux 221, par exemple orientés suivant une direction sensiblement radiale par rapport à l'axe longitudinal X du cylindre 1.  To increase the turbulence around the piston, the peripheral ring 22 may further have crenellations 221, for example oriented in a direction substantially radial with respect to the longitudinal axis X of the cylinder 1.

De préférence, la couronne interne 23 est sensiblement plate.  Preferably, the inner ring 23 is substantially flat.

Ainsi, la couronne périphérique 22 peut être localement interrompue par des lamages 231 coplanaires avec la couronne interne 23 et dont chacun est disposé en regard d'une soupape 4, ces lamages permettant à la couronne interne 23 de rester plane tout en autorisant le débattement des soupapes.  Thus, the peripheral ring 22 may be locally interrupted by countersinks 231 coplanar with the inner ring 23 and each of which is arranged opposite a valve 4, these countersinks allowing the inner ring 23 to remain flat while allowing the deflection of valves.

Comme le montre la figure 3, la couronne périphérique 22 peut être tangente à un plan P sensiblement perpendiculaire à l'axe longitudinal X du cylindre 1.  As shown in Figure 3, the peripheral ring 22 may be tangential to a plane P substantially perpendicular to the longitudinal axis X of the cylinder 1.

Néanmoins, il est également possible de prévoir, comme le montre la figure 4, que la couronne périphérique 22 soit tangente à un cône C centré sur l'axe longitudinal X du cylindre 1 et présentant une concavité tournée vers la culasse 3.  Nevertheless, it is also possible to provide, as shown in FIG. 4, that the peripheral ring 22 is tangent to a cone C centered on the longitudinal axis X of the cylinder 1 and having a concavity turned towards the cylinder head 3.

Dans ce cas, la culasse 3 peut présenter une rainure 31 en regard de la couronne périphérique 22 et de forme complémentaire, recevant au moins partiellement la couronne périphérique 22 du piston 2 lorsque ce dernier atteint son point mort haut.  In this case, the yoke 3 may have a groove 31 facing the peripheral ring 22 and of complementary shape, at least partially receiving the peripheral ring 22 of the piston 2 when the latter reaches its top dead center.

Claims (8)

REVENDICATIONS.CLAIMS. 1. Chambre de combustion pour moteur thermique, notamment pour moteur diesel à injection directe, comprenant un cylindre (1), un piston (2), une culasse (3), et des soupapes (4) montées mobiles dans la culasse, la culasse (3) se raccordant à une extrémité du cylindre (1) par un plan de joint étanche (5), le piston (2) étant monté axialement coulissant dans le cylindre (1) et présentant une face frontale (20) contribuant avec la culasse (3) à délimiter la chambre dans le cylindre (1), la face frontale (20) du piston présentant un bol central (21), une couronne périphérique (22), et une couronne interne (23) disposée radialement entre le bol (21) et la couronne périphérique (22), et la couronne périphérique (22) étant surélevée par rapport à la couronne interne (23) c'est-à-dire plus proche de la culasse (3), caractérisée en ce que la couronne périphérique (22) se raccorde à la couronne interne (23) par un épaulement axial (24).  Combustion chamber for a combustion engine, especially for a direct injection diesel engine, comprising a cylinder (1), a piston (2), a cylinder head (3), and valves (4) movably mounted in the cylinder head, the cylinder head (3) connected to one end of the cylinder (1) by a sealing plane (5), the piston (2) being mounted axially sliding in the cylinder (1) and having a front face (20) contributing with the cylinder head (3) delimiting the chamber in the cylinder (1), the end face (20) of the piston having a central bowl (21), a peripheral ring (22), and an inner ring (23) arranged radially between the bowl ( 21) and the peripheral ring (22), and the peripheral ring (22) being raised relative to the inner ring (23) that is to say closer to the cylinder head (3), characterized in that the ring peripheral (22) is connected to the inner ring (23) by an axial shoulder (24). 2. Chambre suivant la revendication 1, caractérisée en ce que la couronne périphérique (22) présente des créneaux (221).  2. Chamber according to claim 1, characterized in that the peripheral ring (22) has slots (221). 3. Chambre suivant la revendication 2, caractérisée en ce que les créneaux (221) ont une direction sensiblement radiale par rapport à l'axe longitudinal (X) du cylindre (1).  3. Chamber according to claim 2, characterized in that the crenellations (221) have a substantially radial direction relative to the longitudinal axis (X) of the cylinder (1). 4. Chambre suivant l'une quelconque des revendications précédentes, caractérisée en ce que la 30 couronne interne (23) est sensiblement plate.  4. Chamber according to any one of the preceding claims, characterized in that the inner ring (23) is substantially flat. 5. Chambre suivant la revendication 4, caractérisée en ce que la couronne périphérique (22) est localement interrompue par des lamages (231) coplanaires avec la couronne interne (23) et dont chacun est disposé en regard d'une soupape (4).  5. Chamber according to claim 4, characterized in that the peripheral ring (22) is locally interrupted by countersinks (231) coplanar with the inner ring (23) and each of which is arranged opposite a valve (4). 6. Chambre suivant l'une quelconque des revendications précédentes, caractérisée en ce que la couronne périphérique (22) est tangente à un plan (P) sensiblement perpendiculaire à l'axe (X) du cylindre (1).  6. Chamber according to any one of the preceding claims, characterized in that the peripheral ring (22) is tangent to a plane (P) substantially perpendicular to the axis (X) of the cylinder (1). 7. Chambre suivant l'une quelconque des revendications 1 à 5, caractérisée en ce que la couronne périphérique (22) est tangente à un cône (C) présentant une concavité tournée vers la culasse (3).  7. Chamber according to any one of claims 1 to 5, characterized in that the peripheral ring (22) is tangential to a cone (C) having a concavity facing the cylinder head (3). 8. Chambre suivant la revendication 7, caractérisée en ce que la culasse (3) présente une rainure (31) en regard de la couronne périphérique (22) et de forme complémentaire.  8. Chamber according to claim 7, characterized in that the yoke (3) has a groove (31) facing the peripheral ring (22) and of complementary shape.
FR0413189A 2004-12-10 2004-12-10 Combustion chamber for e.g. direct injection diesel engine, has piston whose top face has peripheral rim comprising slots, connected to inner rim by axial shoulder, raised with respect to inner rim and closer to cylinder head Withdrawn FR2879259A1 (en)

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Application Number Priority Date Filing Date Title
FR0413189A FR2879259A1 (en) 2004-12-10 2004-12-10 Combustion chamber for e.g. direct injection diesel engine, has piston whose top face has peripheral rim comprising slots, connected to inner rim by axial shoulder, raised with respect to inner rim and closer to cylinder head

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FR0413189A FR2879259A1 (en) 2004-12-10 2004-12-10 Combustion chamber for e.g. direct injection diesel engine, has piston whose top face has peripheral rim comprising slots, connected to inner rim by axial shoulder, raised with respect to inner rim and closer to cylinder head

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2016151236A (en) * 2015-02-18 2016-08-22 株式会社豊田自動織機 Internal combustion engine

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2172170A (en) * 1939-06-17 1939-09-05 Megroot John Peter Internal combustion engine
GB522313A (en) * 1938-12-08 1940-06-14 Crossley Motors Ltd Improvements relating to compression ignition type oil engines
US3954089A (en) 1971-07-16 1976-05-04 Deere & Company Diesel engine
JPS56106026A (en) * 1980-01-26 1981-08-24 Hino Motors Ltd Direct-injection type diesel engine
US4522173A (en) * 1982-10-22 1985-06-11 Chenesseau Internal combustion engine usable with a high vaporization heat fuel
JPH0598965A (en) * 1991-04-09 1993-04-20 Hino Motors Ltd Direct-injection type diesel engine
EP0845589A1 (en) * 1996-11-27 1998-06-03 Mtu Motoren- Und Turbinen-Union Friedrichshafen Gmbh Direct injection Diesel engine with combustion chamber in piston
JP2001221050A (en) * 2000-02-10 2001-08-17 Nissan Motor Co Ltd Piston of direct injection diesel engine

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB522313A (en) * 1938-12-08 1940-06-14 Crossley Motors Ltd Improvements relating to compression ignition type oil engines
US2172170A (en) * 1939-06-17 1939-09-05 Megroot John Peter Internal combustion engine
US3954089A (en) 1971-07-16 1976-05-04 Deere & Company Diesel engine
JPS56106026A (en) * 1980-01-26 1981-08-24 Hino Motors Ltd Direct-injection type diesel engine
US4522173A (en) * 1982-10-22 1985-06-11 Chenesseau Internal combustion engine usable with a high vaporization heat fuel
JPH0598965A (en) * 1991-04-09 1993-04-20 Hino Motors Ltd Direct-injection type diesel engine
EP0845589A1 (en) * 1996-11-27 1998-06-03 Mtu Motoren- Und Turbinen-Union Friedrichshafen Gmbh Direct injection Diesel engine with combustion chamber in piston
JP2001221050A (en) * 2000-02-10 2001-08-17 Nissan Motor Co Ltd Piston of direct injection diesel engine

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 005, no. 187 (M - 098) 26 November 1981 (1981-11-26) *
PATENT ABSTRACTS OF JAPAN vol. 017, no. 443 (M - 1463) 16 August 1993 (1993-08-16) *
PATENT ABSTRACTS OF JAPAN vol. 2000, no. 25 12 April 2001 (2001-04-12) *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2016151236A (en) * 2015-02-18 2016-08-22 株式会社豊田自動織機 Internal combustion engine

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