FR2736969A1 - Housing area for valve seats in cylinder head of IC engine - has groove running through landing area between adjacent valve seat housings, with depth of groove more than ten times width - Google Patents

Housing area for valve seats in cylinder head of IC engine - has groove running through landing area between adjacent valve seat housings, with depth of groove more than ten times width Download PDF

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Publication number
FR2736969A1
FR2736969A1 FR9508650A FR9508650A FR2736969A1 FR 2736969 A1 FR2736969 A1 FR 2736969A1 FR 9508650 A FR9508650 A FR 9508650A FR 9508650 A FR9508650 A FR 9508650A FR 2736969 A1 FR2736969 A1 FR 2736969A1
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FR
France
Prior art keywords
groove
cylinder head
depth
engine
orifices
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Granted
Application number
FR9508650A
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French (fr)
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FR2736969B1 (en
Inventor
Christophe Depoid
Waldemar Zawisza
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Renault SAS
Regie Nationale des Usines Renault
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Renault SAS
Regie Nationale des Usines Renault
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Priority to FR9508650A priority Critical patent/FR2736969B1/en
Publication of FR2736969A1 publication Critical patent/FR2736969A1/en
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Publication of FR2736969B1 publication Critical patent/FR2736969B1/en
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
    • F02F1/00—Cylinders; Cylinder heads 
    • F02F1/24—Cylinder heads
    • 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
    • F02F1/26—Cylinder heads having cooling means
    • F02F1/36—Cylinder heads having cooling means for liquid cooling
    • F02F1/38—Cylinder heads having cooling means for liquid cooling the cylinder heads being of overhead valve type
    • 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
    • F02B1/00—Engines characterised by fuel-air mixture compression
    • F02B1/02—Engines characterised by fuel-air mixture compression with positive ignition
    • F02B1/04—Engines characterised by fuel-air mixture compression with positive ignition with fuel-air mixture admission into cylinder
    • 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
    • F02F2001/244—Arrangement of valve stems in cylinder heads
    • F02F2001/247—Arrangement of valve stems in cylinder heads the valve stems being orientated in parallel with the cylinder axis
    • 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
    • F02F2001/248—Methods for avoiding thermal stress-induced cracks in the zone between valve seat openings

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Cylinder Crankcases Of Internal Combustion Engines (AREA)

Abstract

The cylinder head (20) is constructed with a combustion face (18), which forms the boundary of the combustion chamber (16) of the engine. This combustion surface has, at least, two holes (24), which open into the combustion chamber and which are separated by a landing area (32). The openings are formed as housings for the cylindrical housings (40), which are located to receive the valve seats. The landing area has, at least, one groove (34), which is formed in the combustion surface of the cylinder head. The groove is formed in a direction (X-X), which is parallel to the line joining the axes of the openings. The groove is formed with a width which is reduced relative to the depth and is of the order of less than a tenth of the depth.

Description

L'invention concerne une culasse de moteur à combustion interne. The invention relates to an internal combustion engine cylinder head.

L'invention concerne plus particulièrement une culasse de moteur à combustion interne, notamment pour véhicule automobile, du type comportant une face feu qui ferme une chambre de combustion interne d'un cylindre du moteur, du type comportant au moins deux orifices qui débouchent dans la chambre de combustion et qui sont séparés par un pontet, et du type dans lequel le pontet comporte au moins une rainure formée dans la face feu de la culasse, sensiblement parallèlement à la direction joignant les axes des orifices. The invention relates more particularly to an internal combustion engine cylinder head, in particular for a motor vehicle, of the type comprising a fire face which closes an internal combustion chamber of an engine cylinder, of the type comprising at least two orifices which open into the combustion chamber and which are separated by a trigger guard, and of the type in which the trigger guard comprises at least one groove formed in the fire face of the cylinder head, substantially parallel to the direction joining the axes of the orifices.

Le pontet, qui est agencé par exemple entre deux sièges de soupape ou entre un siège de soupape et l'orifice débouchant d'une préchambre de combustion, est agencé dans la zone de la culasse soumise aux plus hautes températures. The trigger guard, which is arranged for example between two valve seats or between a valve seat and the orifice emerging from a combustion prechamber, is arranged in the region of the cylinder head subjected to the highest temperatures.

Ce pontet est de plus soumis à de fréquents cycles thermiques d'échauffement et de refroidissement, non seulement à la mise en marche et à l'arrêt du moteur, mais également à chaque cycle de fonctionnement du moteur. This trigger guard is also subjected to frequent thermal heating and cooling cycles, not only when the engine is started and stopped, but also during each engine operating cycle.

En effet, lors de la phase d'admission, le pontet a tendance à être refroidi par les gaz d'admission qui sont sensiblement à la température ambiante tandis que, lors de la phase d'échappement, le pontet est au contact des gaz brûlés qui sont encore à très haute température. Indeed, during the intake phase, the trigger guard tends to be cooled by the intake gases which are substantially at room temperature while, during the exhaust phase, the trigger guard is in contact with the burnt gases. which are still at a very high temperature.

II en résulte que le pontet subit des dilatations et des contractions successives qui, associées à un phénomène de fluage aux plus hautes températures, peuvent entraîner l'apparition de fissures de la zone environnante de la culasse qui en font une zone particulièrement fragile. As a result, the trigger guard undergoes successive expansions and contractions which, associated with a phenomenon of creep at the highest temperatures, can lead to the appearance of cracks in the surrounding area of the cylinder head which make it a particularly fragile area.

Il a déjà été proposé, notamment dans le document
US-A-4.968.733, de munir le pontet de deux évidements agencés selon une direction transversale qui présentent l'inconvénient d'accroître la surface d'échange de chaleur entre le pontet et les gaz d'échappement, ce qui entraîne une augmentation des températures maximales atteintes dans le pontet.It has already been proposed, in particular in the document
US-A-4,968,733, to provide the trigger guard with two recesses arranged in a transverse direction which have the drawback of increasing the heat exchange surface between the trigger guard and the exhaust gases, which leads to an increase maximum temperatures reached in the trigger guard.

Aussi, dans le but de renforcer la tenue en température du pontet1 I'invention propose une culasse du type vu précédemment, caractérisée en ce que la rainure présente une largeur réduite par rapport à sa profondeur. Also, with the aim of reinforcing the temperature resistance of the trigger guard, the invention proposes a cylinder head of the type seen above, characterized in that the groove has a reduced width compared to its depth.

Selon d'autres caractéristiques de l'invention
- la largeur de la rainure est inférieure au dixième de sa profondeur
- la rainure débouche à chacune de ses extrémités dans les orifices
- les orifices sont des logements cylindriques destinés à recevoir des sièges de soupape rapportés, et la profondeur de la rainure est inférieure à la profondeur des logements des sièges de soupape
- la rainure s'étend perpendiculairement au plan de la face feu de la culasse;;
- la rainure s'étend selon un plan oblique par rapport au plan de la face feu de la culasse
- le pontet est muni de deux rainures parallèles agencées symétriquement de part et d'autre de l'axe X-X joignant les axes des deux orifices débouchants
- le fond de la rainure présente une forme arrondie.According to other features of the invention
- the width of the groove is less than a tenth of its depth
- the groove opens at each of its ends into the orifices
the orifices are cylindrical housings intended to receive added valve seats, and the depth of the groove is less than the depth of the housings of the valve seats
- The groove extends perpendicular to the plane of the fire face of the cylinder head;
- the groove extends in an oblique plane relative to the plane of the fire face of the cylinder head
- the trigger guard is provided with two parallel grooves arranged symmetrically on either side of the axis XX joining the axes of the two through orifices
- The bottom of the groove has a rounded shape.

D'autres caractéristiques et avantages de l'invention apparaîtront à la lecture de la description détaillée qui suit pour la compréhension de laquelle on se reportera aux dessins annexés dans lesquels
- la figure 1 est une vue schématique partielle en coupe d'un moteur à combustion interne
- la figure 2 est une vue de la face feu d'une culasse réalisée conformément aux enseignements de l'invention;
- la figure 3 est une vue en coupe selon la ligne 3-3 de la figure 2
- la figure 4 est une vue de la face feu d'une variante de réalisation d'une culasse selon l'invention;
- la figure 5 est une vue en coupe selon la ligne 5-5 de la figure 4 ;;
- la figure 6 est une vue agrandie d'un mode de réalisation des rainures
- la figure 7 est une vue similaire à celle de la figure 6 représentant une variante de réalisation des rainures
- les figures 8 et 9 sont des détails agrandis représentant deux modes de réalisation des fonds de rainure selon l'invention.Other characteristics and advantages of the invention will appear on reading the following detailed description for the understanding of which reference will be made to the accompanying drawings in which
- Figure 1 is a partial schematic sectional view of an internal combustion engine
- Figure 2 is a view of the fire face of a cylinder head made in accordance with the teachings of the invention;
- Figure 3 is a sectional view along line 3-3 of Figure 2
- Figure 4 is a view of the fire face of an alternative embodiment of a cylinder head according to the invention;
- Figure 5 is a sectional view along line 5-5 of Figure 4 ;;
- Figure 6 is an enlarged view of an embodiment of the grooves
- Figure 7 is a view similar to that of Figure 6 showing an alternative embodiment of the grooves
- Figures 8 and 9 are enlarged details showing two embodiments of the groove bottoms according to the invention.

On a représenté de manière schématique sur la figure 1 un moteur à combustion interne 10 dans lequel un piston 12 se déplace à l'intérieur d'un cylindre 14 dont l'extrémité supérieure, délimitant une chambre de combustion 16, est fermée par la face feu 18 d'une culasse 20. FIG. 1 schematically shows an internal combustion engine 10 in which a piston 12 moves inside a cylinder 14 whose upper end, delimiting a combustion chamber 16, is closed by the face fire 18 of a cylinder head 20.

Un conduit 22 est aménagé dans la culasse 20 et il débouche dans la chambre de combustion 16 au travers d'un orifice 24 susceptible d'être obturé par une soupape 26 prenant appui contre un siège de soupape 28. A duct 22 is fitted in the cylinder head 20 and it opens into the combustion chamber 16 through an orifice 24 capable of being closed by a valve 26 bearing against a valve seat 28.

On a représenté sur la figure 2 un détail de la face feu 18 de la culasse 20 qui ferme la chambre de combustion 16 et qui est munie de deux orifices 24 dont l'un est destiné à l'admission du mélange air-carburant et dont l'autre est destiné à l'échappement des gaz brûlés. FIG. 2 shows a detail of the fire face 18 of the cylinder head 20 which closes the combustion chamber 16 and which is provided with two orifices 24, one of which is intended for the admission of the air-fuel mixture and of which the other is for the exhaust of burnt gases.

Les sièges de soupape 28 de chacun des deux orifices 24 délimitent entre eux un pontet 32 dans lequel est aménagée une rainure 34 conforme aux enseignements de l'invention. The valve seats 28 of each of the two orifices 24 delimit between them a trigger guard 32 in which is formed a groove 34 in accordance with the teachings of the invention.

La rainure 34 est aménagée dans la face feu 18 de la culasse 20 suivant l'axe X-X qui relie les axes de chacun des deux orifices débouchants 24 et elle s'étend sur toute la largeur du pontet 32 pour déboucher à chacune de ses extrémités 36, 38 dans les logements 40 des sièges de soupape 28.  The groove 34 is arranged in the fire face 18 of the cylinder head 20 along the axis XX which connects the axes of each of the two through holes 24 and it extends over the entire width of the trigger guard 32 to open at each of its ends 36 , 38 in the housings 40 of the valve seats 28.

Comme on peut le voir plus particulièrement sur la figure 3, la profondeur de la rainure 34 est nettement supérieure à sa largeur et est de préférence comprise entre une demi et une fois la profondeur axiale des sièges de soupape 28. As can be seen more particularly in FIG. 3, the depth of the groove 34 is significantly greater than its width and is preferably between half and once the axial depth of the valve seats 28.

La rainure 34 joue ainsi un rôle de joint de dilatation du pontet 32 qui permet, lorsque celui-ci se dilate du fait d'une augmentation de sa température, d'éviter que n'apparaissent des contraintes de compression trop importantes dans le matériau de la culasse qui seraient susceptibles de le déformer plastiquement, ce qui aurait pour conséquence de provoquer l'apparition de fissures lors de la phase de contraction du pontet due à son refroidissement. The groove 34 thus plays the role of expansion joint of the bridge 32 which makes it possible, when the latter expands due to an increase in its temperature, to prevent the appearance of excessive compression stresses in the material of the cylinder head which would be likely to deform it plastically, which would have the consequence of causing the appearance of cracks during the phase of contraction of the trigger guard due to its cooling.

Le rapport entre la profondeur de la rainure 34 et sa largeur, qui l'apparente à la géométrie d'un trait de scie, fait que cette rainure 34 est très rapidement bouchée par des suies issues de la combustion du carburant. The relationship between the depth of the groove 34 and its width, which appears to be the geometry of a saw cut, means that this groove 34 is very quickly blocked by soot from the combustion of fuel.

Les suies étant très peu compactes, elles n'empêchent pas une libre dilatation du pontet 32 mais elles évitent par leur présence l'augmentation du volume de la chambre de combustion, elles évitent la formation d'une zone de mauvaise combustion et elles évitent d'augmenter la surface d'échange de chaleur entre les gaz et la culasse 20. The soot being very compact, they do not prevent a free expansion of the trigger guard 32 but by their presence they prevent the increase in the volume of the combustion chamber, they prevent the formation of a poor combustion zone and they avoid d '' increase the heat exchange surface between the gases and the cylinder head 20.

On a représenté sur les figures 4 et 5 une variante de réalisation de l'invention dans laquelle le pontet 32 de la culasse 20 est muni de deux rainures 34 identiques, parallèles et qui sont agencées symétriquement de part et d'autre de l'axe X-X qui joint les axes des trous débouchants 24. There is shown in Figures 4 and 5 an alternative embodiment of the invention in which the bridge 32 of the cylinder head 20 is provided with two identical grooves 34, parallel and which are arranged symmetrically on either side of the axis XX which joins the axes of the through holes 24.

Cette disposition permet de mieux répartir les possibilités de dilatation du pontet 32 à chacune de ses extrémités. This arrangement makes it possible to better distribute the possibilities of expansion of the trigger guard 32 at each of its ends.

Les figures 6 et 7 représentent plus en détails deux modes de réalisation des rainures 34.  FIGS. 6 and 7 show in more detail two embodiments of the grooves 34.

Dans le premier mode représenté à la figure 6, les rainures 34 sont taillées perpendiculairement à la face feu 18 de la culasse 20 tandis que, dans le mode de réalisation représenté sur la figure 7, les rainures 34 sont taillées dans deux plans symétriques obliques par rapport au plan de la face feu 18. In the first embodiment shown in Figure 6, the grooves 34 are cut perpendicular to the fire face 18 of the cylinder head 20 while, in the embodiment shown in Figure 7, the grooves 34 are cut in two oblique symmetrical planes by relative to the plan of the fire face 18.

Des rainures taillées obliquement permettent une dilatation du pontet 32 suivant deux directions perpendiculaires et permettent de disposer le fond 42 des rainures 34 plus loin des zones de déformation maximale du pontet 32. Oblique cut grooves allow expansion of the bridge 32 in two perpendicular directions and allow the bottom 42 of the grooves 34 to be arranged further from the zones of maximum deformation of the bridge 32.

Dans tous les cas, le fond 42 des rainures 34 présente de préférence une forme en section arrondie, comme on peut le voir notamment sur les figures 8 et 9, de manière à éviter toute zone de concentration de contraintes susceptibles d'entraîner l'apparition de fissures au fond des rainures. In all cases, the bottom 42 of the grooves 34 preferably has a shape in rounded section, as can be seen in particular in FIGS. 8 and 9, so as to avoid any zone of concentration of stresses liable to cause the appearance cracks at the bottom of the grooves.

Les rainures 34 peuvent par exemple être réalisées par découpage par jet d'eau à haute pression, par usinage au laser, par électroérosion ou par micro-fraisage. The grooves 34 can for example be produced by cutting by high pressure water jet, by laser machining, by electroerosion or by micro-milling.

La largeur des rainures 34 peut être très réduite. Il peut même suffire qu'elle soit de l'ordre de 0,1 à 0,5 mm. The width of the grooves 34 can be very reduced. It may even be sufficient for it to be of the order of 0.1 to 0.5 mm.

L'invention est décrite dans le cas d'un pontet séparant deux sièges de soupape rapportés mais il est possible d'envisager la réalisation de l'invention dans le cas où le pontet de matière sépare un siège de soupape rapporté d'un orifice débouchant quelconque, par exemple l'orifice débouchant d'une préchambre de combustion aménagée à l'intérieur de la culasse et débouchant dans la chambre de combustion.  The invention is described in the case of a trigger guard separating two added valve seats but it is possible to envisage the implementation of the invention in the case where the material trigger separates an added valve seat from a through orifice any, for example the orifice emerging from a combustion prechamber arranged inside the cylinder head and opening into the combustion chamber.

Claims (8)

REVENDICATIONS 1. Culasse de moteur à combustion interne (10), notamment pour véhicule automobile, du type comportant une face feu (18) qui délimite une chambre de combustion (16) d'un cylindre (14) du moteur (10), du type comportant au moins deux orifices (24) qui débouchent dans la chambre de combustion (16) et qui sont séparés par un pontet (32), et du type dans lequel le pontet (32) comporte au moins une rainure (34) formée dans la face feu (18) de la culasse (20), sensiblement parallèle à la direction (X-X) joignant les axes des orifices (24), caractérisée en ce que la rainure (34) présente une largeur réduite par rapport à sa profondeur. 1. Cylinder head of internal combustion engine (10), in particular for motor vehicle, of the type comprising a fire face (18) which delimits a combustion chamber (16) of a cylinder (14) of the engine (10), of the type comprising at least two orifices (24) which open into the combustion chamber (16) and which are separated by a trigger guard (32), and of the type in which the trigger guard (32) comprises at least one groove (34) formed in the fire face (18) of the cylinder head (20), substantially parallel to the direction (XX) joining the axes of the orifices (24), characterized in that the groove (34) has a reduced width compared to its depth. 2. Culasse selon la revendication 1, caractérisée en ce que la largeur de la rainure (34) est inférieure au dixième de sa profondeur. 2. Cylinder head according to claim 1, characterized in that the width of the groove (34) is less than one tenth of its depth. 3. Culasse selon l'une des revendications 1 ou 2, caractérisée en ce que la rainure (34) débouche à chacune de ses extrémités (36, 38) dans les orifices (24). 3. Cylinder head according to one of claims 1 or 2, characterized in that the groove (34) opens at each of its ends (36, 38) in the orifices (24). 4. Culasse selon la revendication 3, caractérisée en ce que les orifices (24) sont des logements cylindriques (40) destinés à recevoir des sièges de soupape rapportés (28), et en ce que la profondeur de la rainure (34) est inférieure à la profondeur des logements (40) des sièges de soupape (28). 4. Cylinder head according to claim 3, characterized in that the orifices (24) are cylindrical housings (40) intended to receive added valve seats (28), and in that the depth of the groove (34) is less to the depth of the housings (40) of the valve seats (28). 5. Culasse selon l'une quelconque des revendications précédentes, caractérisée en ce que la rainure (34) s'étend perpendiculairement au plan de la face feu (18) de la culasse (20). 5. Cylinder head according to any one of the preceding claims, characterized in that the groove (34) extends perpendicular to the plane of the fire face (18) of the cylinder head (20). 6. Culasse selon l'une quelconque des revendications 1 à 4, caractérisée en ce que la rainure (34) s'étend selon un plan oblique par rapport au plan de la face feu (18) de la culasse (20).  6. Cylinder head according to any one of claims 1 to 4, characterized in that the groove (34) extends in an oblique plane relative to the plane of the fire face (18) of the cylinder head (20). 7. Culasse selon l'une quelconque des revendications précédentes, caractérisée en ce que le pontet (32) est muni de deux rainures (34) parallèles agencées symétriquement de part et d'autre de l'axe X-X joignant les axes des deux orifices débouchants (24). 7. Cylinder head according to any one of the preceding claims, characterized in that the trigger guard (32) is provided with two parallel grooves (34) arranged symmetrically on either side of the axis XX joining the axes of the two through orifices (24). 8. Culasse selon l'une quelconque des revendications précédentes, caractérisée en ce que le fond (42) de la rainure (34) présente une forme arrondie.  8. Cylinder head according to any one of the preceding claims, characterized in that the bottom (42) of the groove (34) has a rounded shape.
FR9508650A 1995-07-18 1995-07-18 CYLINDER HEAD OF INTERNAL COMBUSTION ENGINE COMPRISING A BRIDGE PROVIDED WITH A GROOVE Expired - Fee Related FR2736969B1 (en)

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FR9508650A FR2736969B1 (en) 1995-07-18 1995-07-18 CYLINDER HEAD OF INTERNAL COMBUSTION ENGINE COMPRISING A BRIDGE PROVIDED WITH A GROOVE

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FR9508650A FR2736969B1 (en) 1995-07-18 1995-07-18 CYLINDER HEAD OF INTERNAL COMBUSTION ENGINE COMPRISING A BRIDGE PROVIDED WITH A GROOVE

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2957120A1 (en) * 2010-03-05 2011-09-09 Peugeot Citroen Automobiles Sa INTERNAL COMBUSTION ENGINE HEAD
EP2886840A1 (en) * 2013-12-19 2015-06-24 MAN Truck & Bus AG Thermally and/or mechanically actuated component wall of a fluid and/or gas-conveying component, in particular a cylinder head of a combustion engine

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3492976A (en) * 1968-02-12 1970-02-03 Us Army Cylinder head water baffle
EP0226143A2 (en) * 1985-12-12 1987-06-24 Cummins Engine Company, Inc. Thermal fatigue resistant cylinder head
DE3715001A1 (en) * 1987-05-06 1988-11-17 Kloeckner Humboldt Deutz Ag Light alloy cylinder head for an internal combustion engine
DE3728530A1 (en) * 1987-08-27 1989-03-09 Kloeckner Humboldt Deutz Ag Cylinder head for an internal combustion engine
US4962733A (en) * 1989-09-29 1990-10-16 Caterpillar Inc. Device for reducing thermal restraint
FR2654775A1 (en) * 1989-11-22 1991-05-24 Peugeot Cylinder head for an internal combustion engine with inserts cast in between the valve seats

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3492976A (en) * 1968-02-12 1970-02-03 Us Army Cylinder head water baffle
EP0226143A2 (en) * 1985-12-12 1987-06-24 Cummins Engine Company, Inc. Thermal fatigue resistant cylinder head
DE3715001A1 (en) * 1987-05-06 1988-11-17 Kloeckner Humboldt Deutz Ag Light alloy cylinder head for an internal combustion engine
DE3728530A1 (en) * 1987-08-27 1989-03-09 Kloeckner Humboldt Deutz Ag Cylinder head for an internal combustion engine
US4962733A (en) * 1989-09-29 1990-10-16 Caterpillar Inc. Device for reducing thermal restraint
FR2654775A1 (en) * 1989-11-22 1991-05-24 Peugeot Cylinder head for an internal combustion engine with inserts cast in between the valve seats

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2957120A1 (en) * 2010-03-05 2011-09-09 Peugeot Citroen Automobiles Sa INTERNAL COMBUSTION ENGINE HEAD
WO2011107687A1 (en) * 2010-03-05 2011-09-09 Peugeot Citroën Automobiles SA Cylinder head for an internal combustion engine
CN102791967A (en) * 2010-03-05 2012-11-21 标致·雪铁龙汽车公司 Cylinder head for an internal combustion engine
CN102791967B (en) * 2010-03-05 2016-04-13 标致·雪铁龙汽车公司 The cylinder head of internal-combustion engine, multi-cylinder internal-combustion engine and motor vehicle
EP2886840A1 (en) * 2013-12-19 2015-06-24 MAN Truck & Bus AG Thermally and/or mechanically actuated component wall of a fluid and/or gas-conveying component, in particular a cylinder head of a combustion engine
CN104727968A (en) * 2013-12-19 2015-06-24 曼卡车和巴士股份公司 Thermally and/or mechanically actuated component wall of a fluid and/or gas-conveying component, in particular a cylinder head of a combustion engine
RU2683202C2 (en) * 2013-12-19 2019-03-26 Ман Трак Унд Бас Аг Thermally and/or mechanical loaded wall of fluid-conducting and/or gas construction element, in particular of cylinder head of internal combustion engine
EP3789599A1 (en) * 2013-12-19 2021-03-10 MAN Truck & Bus SE Thermally and/or mechanically actuated component wall of a fluid and/or gas-conveying component, in particular a cylinder head of a combustion engine

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