EP2041417B1 - Internal combustion engine cylinder head comprising a reinforcing element - Google Patents

Internal combustion engine cylinder head comprising a reinforcing element Download PDF

Info

Publication number
EP2041417B1
EP2041417B1 EP07803942A EP07803942A EP2041417B1 EP 2041417 B1 EP2041417 B1 EP 2041417B1 EP 07803942 A EP07803942 A EP 07803942A EP 07803942 A EP07803942 A EP 07803942A EP 2041417 B1 EP2041417 B1 EP 2041417B1
Authority
EP
European Patent Office
Prior art keywords
cylinder head
lattice
head according
aluminum alloy
face
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.)
Not-in-force
Application number
EP07803942A
Other languages
German (de)
French (fr)
Other versions
EP2041417A1 (en
Inventor
Romain Dejean
Eric Nicouleau-Bourles
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
Publication of EP2041417A1 publication Critical patent/EP2041417A1/en
Application granted granted Critical
Publication of EP2041417B1 publication Critical patent/EP2041417B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D19/00—Casting in, on, or around objects which form part of the product
    • B22D19/0009—Cylinders, pistons
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D19/00—Casting in, on, or around objects which form part of the product
    • B22D19/02—Casting in, on, or around objects which form part of the product for making reinforced articles
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
    • F02F1/00—Cylinders; Cylinder heads 
    • F02F1/24—Cylinder heads

Definitions

  • the present invention relates to a cylinder head for an internal combustion engine.
  • the cylinder heads of internal combustion engines are generally made of aluminum alloy.
  • the FR2671310 and 2682899 describe cylinder heads of an internal combustion engine having improved resistance to the aforementioned stresses.
  • the FR 2 059 230 shows a cylinder head according to the first part of claim 1.
  • the object of the invention is to create a cylinder head for an internal combustion engine, made of aluminum alloy having a significantly increased resistance to the mechanical and thermal stresses mentioned above.
  • a cylinder head characterized in that it comprises a perforated element extending near the face of the cylinder head adjacent to the combustion chamber, this perforated element being completely coated with the aluminum alloy of the cylinder head and being made of a material having a higher bending strength than said aluminum alloy.
  • the perforated element above reinforces in particular with respect to the bending forces it undergoes during the operation of the engine, the part of the yoke called tablature which is adjacent to the combustion chamber.
  • the perforated element is made of steel and consists of a grid or a lattice.
  • This grid or mesh preferably extends parallel to the face of the cylinder head adjacent to the combustion chamber.
  • This grid or mesh, steel or other high-strength alloy is thus separated from said face by a constant aluminum alloy thickness.
  • said lattice extends over substantially the entire length and width of the yoke.
  • said lattice reinforces with respect to the bending and thermal forces, the entire part of the yoke that is adjacent to the combustion chamber.
  • said mesh extends between the intake and exhaust ducts and the passages for the cooling liquid made in the cylinder head and said face adjacent to the combustion chamber.
  • said lattice is separated from said ducts, passages and said face by an aluminum alloy thickness at least equal to the thickness of said lattice.
  • said lattice comprises recesses surrounding the exhaust and intake ducts, the fuel injector and the glow plug.
  • the lattice is composed of parallel bars extending along the length of the bolt, of bars parallel extending along the width of the yoke and parallel bars extending along diagonals.
  • the bars have a smaller thickness in the plane of the lattice than in a direction perpendicular to this plane.
  • the figure 1 shows in section the cylinder head 1 of an internal combustion engine, made of aluminum alloy, in particular a direct injection diesel engine.
  • This yoke 1 comprises a perforated element 2 extending near the face 3 of the yoke adjacent to the combustion chamber.
  • This perforated element 2 is completely covered by the aluminum alloy of the yoke 1 and is made of a material such as steel having a higher bending strength than the aluminum alloy constituting the yoke 1.
  • the perforated element 1 is a lattice that can be cut or stamped into a steel plate or be molded.
  • the figure 1 shows that the mesh 2 extends parallel to the face 3 of the yoke 1, adjacent to the combustion chamber and extends over substantially the entire length and width of the yoke 1.
  • the mesh 2 extends between the intake ducts 4 and exhaust 5 and the passages 6, 7, 8 for the cooling liquid made in the cylinder head and the face 3 adjacent to the combustion chamber.
  • the lattice 2 is separated from the ducts 4, 5, passages 6, 7, 8 and from the face 3 by an aluminum alloy thickness at least equal to the thickness of the lattice 2.
  • the figures 2 and 4 show on the other hand, that the mesh 2 has circular recesses 9, 10, 11, 12, 13 for surrounding the exhaust ducts and intake, the fuel injector and the glow plug.
  • the lattice is composed of parallel bars 14 extending along the length of the yoke, parallel bars 15 extending along the width of the yoke and parallel bars 16, 17 extending along diagonals.
  • the bars 14, 15, 16 and 17 have a smaller thickness in the plane of the lattice 2 than in a direction perpendicular to this plane.
  • This feature gives the mesh 2 a high resistance to bending stresses, despite the fact that the openings between the bars 14 to 17 represent a surface greater than 90% of the total surface of the mesh 2.
  • the molten alloy completely covers the bars 14 to 17 of the mesh 2 and completely fills the openings, that is to say the spaces between the bars.
  • the steel mesh 2 reinforces with respect to the bending forces the tablature of the cylinder head and prevents the cracking thereof, despite the strong mechanical and thermal stresses it undergoes in the case of an engine whose power can to reach 80 KW per liter of displacement.
  • the mesh 2 may also be made of another alloy with high strength than steel.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • General Engineering & Computer Science (AREA)
  • Cylinder Crankcases Of Internal Combustion Engines (AREA)
  • Superconductors And Manufacturing Methods Therefor (AREA)
  • Luminescent Compositions (AREA)
  • Ultra Sonic Daignosis Equipment (AREA)

Abstract

Internal combustion engine cylinder head (1) made of aluminium alloy, characterized in that it comprises a perforated element (2) running close to the face (3) of the cylinder head that is adjacent to the combustion chamber, this perforated element (2) being completely encased by the aluminium alloy of the cylinder head and made of a material that has a better bending strength than the said aluminium alloy.

Description

La présente invention concerne une culasse pour moteur à combustion interne.The present invention relates to a cylinder head for an internal combustion engine.

Les culasses des moteurs à combustion interne sont généralement réalisées en alliage d'aluminium.The cylinder heads of internal combustion engines are generally made of aluminum alloy.

Dans les moteurs à combustion interne actuels, en particulier dans les moteurs diesel turbocompressés à injection directe dont la puissance peut atteindre 80 kW par litre de cylindrée, la face de la culasse adjacente à la chambre de combustion est sollicitée par des pressions pouvant atteindre 200 bars engendrant des efforts de flexion considérables auxquelles s'ajoutent des sollicitations thermiques dues aux fortes températures régnant dans la chambre de combustion.In today's internal combustion engines, particularly in direct injection turbocharged diesel engines with a power output of up to 80 kW per liter of displacement, the cylinder head adjacent to the combustion chamber is subjected to pressures of up to 200 bar generating considerable bending forces to which are added thermal stresses due to the high temperatures prevailing in the combustion chamber.

Ces sollicitations mécaniques et thermiques peuvent conduire à la fissuration de la tablature de la culasse, c'est-à-dire la couche d'alliage d'aluminium qui sépare la face adjacente à la chambre de combustion, des conduits d'admission et d'échappement ainsi que des passages pour le liquide de refroidissement qui sont réalisés dans la culasse.These mechanical and thermal stresses can lead to cracking of the tab of the cylinder head, that is to say the layer of aluminum alloy which separates the face adjacent to the combustion chamber, intake ducts and exhaust and passages for the coolant that are made in the cylinder head.

Les FR2671310 et 2682899 décrivent des culasses de moteur à combustion interne ayant une résistance améliorée à l'égard des sollicitations précitées.The FR2671310 and 2682899 describe cylinder heads of an internal combustion engine having improved resistance to the aforementioned stresses.

Les solutions décrites dans les documents ci-dessus consistent à réaliser la culasse par coulées successives de deux alliages différents.The solutions described in the documents above consist in making the cylinder head by successive casting of two different alloys.

Cependant ces solutions sont de mise en oeuvre délicate et coûteuse et ne sont pas suffisantes pour éviter la fissuration des culasses des moteurs de forte puissance spécifique prévus dans le futur. Le FR 2 059 230 montre une culasse selon la première partie de la revendication 1.However, these solutions are difficult and expensive to implement and are not sufficient to prevent the cracking of the heads of high specific power engines expected in the future. The FR 2 059 230 shows a cylinder head according to the first part of claim 1.

Le but de l'invention est de créer une culasse pour moteur à combustion interne, réalisée en alliage d'aluminium ayant une résistance nettement augmentée à l'égard des sollicitations mécaniques et thermiques évoquées plus haut.The object of the invention is to create a cylinder head for an internal combustion engine, made of aluminum alloy having a significantly increased resistance to the mechanical and thermal stresses mentioned above.

Ce but est atteint selon l'invention par une culasse caractérisée en ce qu'elle comprend un élément ajouré s'étendant près de la face de la culasse adjacente à la chambre de combustion, cet élément ajouré étant complètement enrobé par l'alliage d'aluminium de la culasse et étant réalisé dans une matière ayant une résistance à la flexion supérieure à celle dudit alliage d'aluminium.This object is achieved according to the invention by a cylinder head characterized in that it comprises a perforated element extending near the face of the cylinder head adjacent to the combustion chamber, this perforated element being completely coated with the aluminum alloy of the cylinder head and being made of a material having a higher bending strength than said aluminum alloy.

L'élément ajouré ci-dessus renforce notamment à l'égard des efforts de flexion qu'elle subit lors du fonctionnement du moteur, la partie de la culasse appelée tablature qui est adjacente à la chambre de combustion.The perforated element above reinforces in particular with respect to the bending forces it undergoes during the operation of the engine, the part of the yoke called tablature which is adjacent to the combustion chamber.

L'élément ajouré est en acier et est constitué par une grille ou un treillis.The perforated element is made of steel and consists of a grid or a lattice.

Cette grille ou treillis s'étend de préférence parallèlement à la face de la culasse adjacente à la chambre de combustion. Cette grille ou treillis, en acier ou en un autre alliage à haute résistance, est ainsi séparée de ladite face par une épaisseur d'alliage d'aluminium constante.This grid or mesh preferably extends parallel to the face of the cylinder head adjacent to the combustion chamber. This grid or mesh, steel or other high-strength alloy, is thus separated from said face by a constant aluminum alloy thickness.

Avantageusement, ledit treillis s'étend sur sensiblement toute la longueur et la largeur de la culasse.Advantageously, said lattice extends over substantially the entire length and width of the yoke.

De ce fait, ledit treillis renforce à l'égard des efforts de flexion et thermiques, toute la partie de la culasse qui est adjacente à la chambre de combustion.Therefore, said lattice reinforces with respect to the bending and thermal forces, the entire part of the yoke that is adjacent to the combustion chamber.

Avantageusement, ledit treillis s'étend entre les conduits d'admission et d'échappement et les passages pour le liquide de refroidissement réalisés dans la culasse et ladite face adjacente à la chambre de combustion.Advantageously, said mesh extends between the intake and exhaust ducts and the passages for the cooling liquid made in the cylinder head and said face adjacent to the combustion chamber.

De préférence, ledit treillis est séparé desdits conduits, passages et de ladite face par une épaisseur d'alliage d'aluminium au moins égale à l'épaisseur dudit treillis.Preferably, said lattice is separated from said ducts, passages and said face by an aluminum alloy thickness at least equal to the thickness of said lattice.

De préférence également, ledit treillis comporte des évidements entourant les conduits d'échappement et d'admission, l'injecteur de carburant et la bougie de préchauffage.Also preferably, said lattice comprises recesses surrounding the exhaust and intake ducts, the fuel injector and the glow plug.

Ces évidements du treillis sont séparés desdits conduits, passages et bougie par une épaisseur suffisante d'alliage d'aluminium.These recesses of the lattice are separated from said ducts, passages and candle by a sufficient thickness of aluminum alloy.

Dans une réalisation préférée de l'invention, le treillis est composé de barrettes parallèles s'étendant suivant la longueur de la culasse, de barrettes parallèles s'étendant suivant la largeur de la culasse et de barrettes parallèles s'étendant suivant des diagonales.In a preferred embodiment of the invention, the lattice is composed of parallel bars extending along the length of the bolt, of bars parallel extending along the width of the yoke and parallel bars extending along diagonals.

Pour augmenter la résistance à la flexion du treillis, les barrettes ont une épaisseur plus faible dans le plan du treillis, que dans une direction perpendiculaire à ce plan.To increase the flexural strength of the lattice, the bars have a smaller thickness in the plane of the lattice than in a direction perpendicular to this plane.

D'autres particularités et avantages de l'invention apparaîtront encore tout au long de la description ci-après.Other features and advantages of the invention will become apparent throughout the description below.

Aux dessins annexés, donnés à titre d'exemples, non limitatifs :

  • la figure 1 est une vue en coupe transversale d'une culasse comportant un élément ajouré en forme de treillis,
  • la figure 2 est une vue en plan du treillis,
  • la figure 3 est une vue en perspective d'une partie du treillis,
  • la figure 4 est une vue en perspective d'une partie de la culasse dans laquelle le treillis est enrobé,
  • la figure 5 est une vue en coupe du détail A de la figure 4.
In the accompanying drawings, given by way of nonlimiting examples:
  • the figure 1 is a cross-sectional view of a yoke comprising a perforated element in the form of a lattice,
  • the figure 2 is a plan view of the lattice,
  • the figure 3 is a perspective view of a part of the lattice,
  • the figure 4 is a perspective view of a portion of the yoke in which the lattice is embedded,
  • the figure 5 is a sectional view of detail A of the figure 4 .

La figure 1 représente en coupe la culasse 1 d'un moteur à combustion interne, réalisée en alliage d'aluminium, en particulier d'un moteur diesel à injection directe.The figure 1 shows in section the cylinder head 1 of an internal combustion engine, made of aluminum alloy, in particular a direct injection diesel engine.

Cette culasse 1 comprend un élément ajouré 2 s'étendant près de la face 3 de la culasse adjacente à la chambre de combustion. Cet élément ajouré 2 est complètement enrobé par l'alliage d'aluminium de la culasse 1 et est réalisé dans une matière telle que l'acier ayant une résistance à la flexion supérieure à celle de l'alliage d'aluminium constituant la culasse 1.This yoke 1 comprises a perforated element 2 extending near the face 3 of the yoke adjacent to the combustion chamber. This perforated element 2 is completely covered by the aluminum alloy of the yoke 1 and is made of a material such as steel having a higher bending strength than the aluminum alloy constituting the yoke 1.

On voit sur les figures 2 et 3 que l'élément ajouré 1 est un treillis qui peut être découpé ou estampé dans une plaque en acier ou être moulé.We see on figures 2 and 3 that the perforated element 1 is a lattice that can be cut or stamped into a steel plate or be molded.

La figure 1 montre que le treillis 2 s'étend parallèlement à la face 3 de la culasse 1, adjacente à la chambre de combustion et s'étend sur sensiblement toute la longueur et la largeur de la culasse 1.The figure 1 shows that the mesh 2 extends parallel to the face 3 of the yoke 1, adjacent to the combustion chamber and extends over substantially the entire length and width of the yoke 1.

Par ailleurs, le treillis 2 s'étend entre les conduits d'admission 4 et d'échappement 5 et les passages 6, 7, 8 pour le liquide de refroidissement réalisés dans la culasse et la face 3 adjacente à la chambre de combustion.Moreover, the mesh 2 extends between the intake ducts 4 and exhaust 5 and the passages 6, 7, 8 for the cooling liquid made in the cylinder head and the face 3 adjacent to the combustion chamber.

Le treillis 2 est séparé des conduits 4, 5, des passages 6, 7, 8 et de la face 3 par une épaisseur d'alliage d'aluminium au moins égale à l'épaisseur du treillis 2.The lattice 2 is separated from the ducts 4, 5, passages 6, 7, 8 and from the face 3 by an aluminum alloy thickness at least equal to the thickness of the lattice 2.

Les figures 2 et 4 montrent d'autre part, que le treillis 2 comporte des évidements circulaires 9, 10, 11, 12, 13 destinés à entourer les conduits d'échappement et d'admission, l'injecteur de carburant et la bougie de préchauffage.The figures 2 and 4 show on the other hand, that the mesh 2 has circular recesses 9, 10, 11, 12, 13 for surrounding the exhaust ducts and intake, the fuel injector and the glow plug.

Comme montré sur les figures 2 et 3, le treillis est composé de barrettes parallèles 14 s'étendant suivant la longueur de la culasse, de barrettes parallèles 15 s'étendant suivant la largeur de la culasse et de barrettes parallèles 16, 17 s'étendant suivant des diagonales.As shown on figures 2 and 3 , the lattice is composed of parallel bars 14 extending along the length of the yoke, parallel bars 15 extending along the width of the yoke and parallel bars 16, 17 extending along diagonals.

De plus, les barrettes 14, 15, 16 et 17 ont une épaisseur plus faible dans le plan du treillis 2 que dans une direction perpendiculaire à ce plan.In addition, the bars 14, 15, 16 and 17 have a smaller thickness in the plane of the lattice 2 than in a direction perpendicular to this plane.

Cette particularité confère au treillis 2 une importante résistance aux efforts de flexion, malgré le fait que les ajours compris entre les barrettes 14 à 17 représentent une surface supérieure à 90% de la surface totale du treillis 2.This feature gives the mesh 2 a high resistance to bending stresses, despite the fact that the openings between the bars 14 to 17 represent a surface greater than 90% of the total surface of the mesh 2.

Lors de la fabrication de la culasse 1 par coulée sous pression d'alliage d'aluminium dans une moule, l'alliage en fusion enrobe complètement les barrettes 14 à 17 du treillis 2 et remplit entièrement les ajours c'est-à-dire les espaces compris entre les barrettes.During the manufacture of the cylinder head 1 by die casting of aluminum alloy in a mold, the molten alloy completely covers the bars 14 to 17 of the mesh 2 and completely fills the openings, that is to say the spaces between the bars.

Le treillis 2 en acier renforce à l'égard des efforts de flexion la tablature de la culasse et empêche la fissuration de celle-ci, malgré les fortes sollicitations mécaniques et thermiques qu'elle subit dans le cas d'un moteur dont la puissance peut atteindre 80 KW par litre de cylindrée.The steel mesh 2 reinforces with respect to the bending forces the tablature of the cylinder head and prevents the cracking thereof, despite the strong mechanical and thermal stresses it undergoes in the case of an engine whose power can to reach 80 KW per liter of displacement.

Le treillis 2 peut également être réalisé en un autre alliage à haute résistance que l'acier.The mesh 2 may also be made of another alloy with high strength than steel.

Claims (9)

  1. Internal combustion engine cylinder head (1) made of aluminum alloy and including an openwork element (2) lying near the face (3) of the cylinder head adjacent to the combustion chamber, this openwork element (2) being completely encased in the aluminum alloy of the cylinder head and being made from a material having a better bending strength than that of said aluminum alloy, characterized in that the openwork element (2) is a lattice.
  2. Cylinder head according to Claim 1, characterized in that the lattice (2) is made of steel.
  3. Cylinder head according to either of the preceding claims, characterized in that said lattice (2) lies parallel to the face (3) of the cylinder head (1) adjacent to the combustion chamber.
  4. Cylinder head according to one of the preceding claims, characterized in that said lattice (2) lies generally over the whole length and the width of the cylinder head (1).
  5. Cylinder head according to one of the preceding claims, characterized in that said lattice (2) lies between the intake (4) and exhaust (5) ports and the passages (6, 7, 8) for the coolant made in the cylinder head and said face (3) adjacent to the combustion chamber.
  6. Cylinder head according to Claim 5, characterized in that said lattice (2) is separated from said ports (4, 5), passages (6, 7, 8) and said face (3) by a thickness of aluminum alloy at least equal to the thickness of said lattice (2).
  7. Cylinder head according to one of the preceding claims, characterized in that said lattice (2) comprises cut-outs (9, 10, 11, 12, 13) surrounding the intake and exhaust ports, the fuel injector and the glow plug.
  8. Cylinder head according to one of the preceding claims, characterized in that the lattice (2) is composed of parallel strips (14) lying along the length of the cylinder head, parallel strips (15) lying along the width of the cylinder head and parallel strips (16, 17) lying along diagonals.
  9. Cylinder head according to Claim 8, characterized in that the strips (14 to 17) have a smaller thickness in the plane of the lattice (2) than in a direction perpendicular to this plane.
EP07803942A 2006-07-18 2007-06-26 Internal combustion engine cylinder head comprising a reinforcing element Not-in-force EP2041417B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0606526A FR2904052B1 (en) 2006-07-18 2006-07-18 CYLINDER HEAD FOR INTERNAL COMBUSTION ENGINE, COMPRISING A REINFORCING ELEMENT.
PCT/FR2007/051523 WO2008009834A1 (en) 2006-07-18 2007-06-26 Internal combustion engine cylinder head comprising a reinforcing element

Publications (2)

Publication Number Publication Date
EP2041417A1 EP2041417A1 (en) 2009-04-01
EP2041417B1 true EP2041417B1 (en) 2009-12-23

Family

ID=37814187

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07803942A Not-in-force EP2041417B1 (en) 2006-07-18 2007-06-26 Internal combustion engine cylinder head comprising a reinforcing element

Country Status (6)

Country Link
EP (1) EP2041417B1 (en)
JP (1) JP2009543979A (en)
AT (1) ATE453044T1 (en)
DE (1) DE602007003985D1 (en)
FR (1) FR2904052B1 (en)
WO (1) WO2008009834A1 (en)

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2059230A5 (en) * 1969-09-11 1971-05-28 Kloeckner Humboldt Deutz Ag
JPS5359009U (en) * 1976-10-21 1978-05-19
JPS56113138U (en) * 1980-01-31 1981-09-01
JPS5874266A (en) * 1981-10-29 1983-05-04 Honda Motor Co Ltd Production of cylinder head for engine
JPS61244860A (en) * 1985-04-23 1986-10-31 Mitsubishi Motors Corp Cylinderhead
JPS63147959A (en) * 1986-12-09 1988-06-20 Isuzu Motors Ltd Cylinder head structure
JPH0530447U (en) * 1991-09-25 1993-04-23 日産自動車株式会社 Engine crank frame
FR2697291B1 (en) * 1992-10-28 1994-12-02 Peugeot Arrangement of metal inserts for cylinder head expansion joints of an internal combustion engine.
DE102004053362A1 (en) * 2004-11-02 2006-05-04 Fev Motorentechnik Gmbh Reinforced component

Also Published As

Publication number Publication date
ATE453044T1 (en) 2010-01-15
DE602007003985D1 (en) 2010-02-04
FR2904052B1 (en) 2012-10-19
FR2904052A1 (en) 2008-01-25
WO2008009834A1 (en) 2008-01-24
EP2041417A1 (en) 2009-04-01
JP2009543979A (en) 2009-12-10

Similar Documents

Publication Publication Date Title
FR2531644A1 (en) METHOD FOR CONNECTING A REPORTED WORKPIECE WITH A CERAMIC MATERIAL WHICH COULD ENTER INTO A CAST PART DONE IN LIGHT METAL MATERIAL FOR INTERNAL COMBUSTION ENGINES
FR2631412A1 (en) STEEL SHEET SEAL SEAL WITH SEPARATE BOURRELETS
FR2925600A1 (en) INTERNAL COMBUSTION ENGINE
EP2041417B1 (en) Internal combustion engine cylinder head comprising a reinforcing element
FR2540555A1 (en) REPORTED VALVE SEAT, INTERNAL COMBUSTION ENGINE WITH REPLACED SEATS, AND METHOD OF MANUFACTURING SUCH ENGINE
EP3167177B1 (en) Cylinder head, element and flange of a piston engine
FR2654775A1 (en) Cylinder head for an internal combustion engine with inserts cast in between the valve seats
JP2006132416A (en) Internal combustion engine and method of manufacturing its combustion chamber component part
JP7095334B2 (en) cylinder head
KR100913907B1 (en) Exhaust valve of engine for ship
EP3140581B1 (en) Pipe connection for a motor vehicle
FR2882791A1 (en) Cylinder head for internal combustion engine e.g. diesel engine, of motor vehicle, has coolant node with transverse channel extending from central channel up to peripheral channel to pass near place where spark plug is to be positioned
FR2543617A1 (en) CYLINDER HEAD FOR COMBUSTION ENGINES WITH COMPRESSION IGNITION
JP4237576B2 (en) Piston of internal combustion engine
FR3061442A1 (en) INSERT WITH LATTICE STRUCTURE TO PROMOTE COOLING OF A THERMAL ENGINE
FR2921117A3 (en) Reinforcement element for a cylinder head of a thermal engine, comprises a first- and a second unit for anchoring the reinforcement element in a first- and a second place of the cylinder head respectively, and a junction unit
EP3258078B1 (en) Cooling system of a heat engine
FR2813640A1 (en) I.c. engine has cylinder sleeves made in one piece with aluminium or alloy cylinder head
BE355356A (en)
FR2943099A1 (en) Insert for cylinder head of engine of motor vehicle, has valve seat receiving valves of engine in closed position, and housing accommodating engine unit e.g. spark plug, where valve seat is flange with central axis
BE551993A (en)
JP5444772B2 (en) Cooling water passage forming core and cylinder head and method for manufacturing the same
FR2719869A1 (en) Liquid cooled IC engine cylinder head
EP2329119A1 (en) Thermal regulation device for an engine
BE509898A (en)

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20090107

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC MT NL PL PT RO SE SI SK TR

AX Request for extension of the european patent

Extension state: AL BA HR MK RS

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

DAX Request for extension of the european patent (deleted)
GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC MT NL PL PT RO SE SI SK TR

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

REF Corresponds to:

Ref document number: 602007003985

Country of ref document: DE

Date of ref document: 20100204

Kind code of ref document: P

REG Reference to a national code

Ref country code: NL

Ref legal event code: VDEP

Effective date: 20091223

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20091223

Ref country code: LT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20091223

Ref country code: SE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20091223

LTIE Lt: invalidation of european patent or patent extension

Effective date: 20091223

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20091223

Ref country code: LV

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20091223

Ref country code: PL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20091223

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20091223

REG Reference to a national code

Ref country code: IE

Ref legal event code: FD4D

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: RO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20091223

Ref country code: PT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20100423

Ref country code: BG

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20100323

Ref country code: IS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20100423

Ref country code: ES

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20100403

Ref country code: EE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20091223

Ref country code: NL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20091223

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CZ

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20091223

Ref country code: SK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20091223

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20091223

Ref country code: CY

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20091223

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20100324

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed

Effective date: 20100924

BERE Be: lapsed

Owner name: RENAULT SAS

Effective date: 20100630

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20091223

Ref country code: MC

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20100630

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20091223

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20091223

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20100630

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20110630

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20110630

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20120622

Year of fee payment: 6

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20120622

Year of fee payment: 6

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20100626

Ref country code: HU

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20100624

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: TR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20091223

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20130626

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 602007003985

Country of ref document: DE

Effective date: 20140101

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20130626

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20140101

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 9

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 10

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 11

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20170621

Year of fee payment: 11

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20180630