WO2019016220A1 - Cylinder head for a heat engine, equipped with an exhaust pipe - Google Patents

Cylinder head for a heat engine, equipped with an exhaust pipe Download PDF

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Publication number
WO2019016220A1
WO2019016220A1 PCT/EP2018/069416 EP2018069416W WO2019016220A1 WO 2019016220 A1 WO2019016220 A1 WO 2019016220A1 EP 2018069416 W EP2018069416 W EP 2018069416W WO 2019016220 A1 WO2019016220 A1 WO 2019016220A1
Authority
WO
WIPO (PCT)
Prior art keywords
cylinder head
exhaust
outlet
duct
exhaust duct
Prior art date
Application number
PCT/EP2018/069416
Other languages
French (fr)
Inventor
Riowen HEDOUX
Original Assignee
Renault S.A.S
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 S.A.S filed Critical Renault S.A.S
Priority to EP18738366.6A priority Critical patent/EP3655639B1/en
Publication of WO2019016220A1 publication Critical patent/WO2019016220A1/en

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M13/00—Crankcase ventilating or breathing
    • F01M13/04—Crankcase ventilating or breathing having means for purifying air before leaving crankcase, e.g. removing oil
    • F01M13/0416—Crankcase ventilating or breathing having means for purifying air before leaving crankcase, e.g. removing oil arranged in valve-covers
    • 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
    • F02F7/00—Casings, e.g. crankcases or frames
    • F02F7/006—Camshaft or pushrod housings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M11/00—Component parts, details or accessories, not provided for in, or of interest apart from, groups F01M1/00 - F01M9/00
    • F01M11/02—Arrangements of lubricant conduits
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M11/00—Component parts, details or accessories, not provided for in, or of interest apart from, groups F01M1/00 - F01M9/00
    • F01M11/02—Arrangements of lubricant conduits
    • F01M2011/023—Arrangements of lubricant conduits between oil sump and cylinder head
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M13/00—Crankcase ventilating or breathing
    • F01M13/04—Crankcase ventilating or breathing having means for purifying air before leaving crankcase, e.g. removing oil
    • F01M2013/0488—Crankcase ventilating or breathing having means for purifying air before leaving crankcase, e.g. removing oil with oil trap in the return conduit to the crankcase
    • 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

Definitions

  • Cylinder head for combustion engine equipped with a conduit
  • the invention relates to a cylinder head for a heat engine. More particularly, the invention relates to a cylinder head having a risk of ignition.
  • a cylinder head for a combustion engine comprises a cylinder head body in which intake ducts, exhaust ducts and injection and / or ignition systems, valve systems and at least one camshaft.
  • the cylinder head has an exhaust side and an intake side.
  • the cylinder head includes a cylinder head cover which is mounted on the cylinder head body.
  • the oil flow can reach a mounting flange on the exhaust side of the cylinder head.
  • This fastening flange is part of an exhaust line for bringing the gas produced after combustion to a catalytic converter, or catalyst, to transform it into a gas with fewer toxic constituents.
  • the catalytic converter in its operating state, can reach a very high temperature, in particular of the order of 800 ° C. to 1000 ° C.
  • the oil if it reaches the clamp, it can flow to the catalytic converter.
  • the contact between the oil and said catalytic converter, especially when it is in operation at high temperature, may cause ignition, which could cause serious damage to the vehicle. The safety of a driver in this case is threatened.
  • an object of the invention is to provide a cylinder head which does not present a risk of ignition and ensures the safety of the driver in the vehicle.
  • the invention relates to a combustion engine cylinder head comprising
  • a cylinder head intended to be mounted on a crankcase of the engine; said cylinder body having an exhaust side;
  • the bolt body comprises an exhaust duct located on the exhaust side and connected to an outlet; and said exhaust duct being open opposite the cylinder head cover.
  • exhaust side of the cylinder head body the side where are arranged exhaust ducts. It can also be the side where is disposed an exhaust manifold in the case where it is integrated in the cylinder head.
  • the invention when there is a seepage of the oil at the interface between the cylinder head body and the cylinder head cover on the exhaust side, the oil is immediately collected by the exhaust pipe and brought to the exit.
  • the exhaust vent is a barrier to prevent oil from falling onto a mounting flange. In this way, the oil can not reach either the fixing flange or the catalytic converter connected to said flange. There is therefore no risk of contact between the oil and the catalytic converter operating at high temperature.
  • the exhaust duct comprises a slope directed towards the outlet. In this way, the oil flows more quickly to the outlet and does not stagnate in the exhaust duct.
  • This structure is particularly effective in case of heavy oil flow.
  • the output is an orifice.
  • the exhaust duct is an open groove at its upper face.
  • the orifice is made at the bottom of the groove.
  • the yoke body has a width extending in a first direction and a height extending in a second direction.
  • the bolt body comprises at least one connecting zone intended to receive an attachment flange of an exhaust line and which has a first dimension defined in the first direction.
  • the evacuation duct has a first dimension, defined in the first direction, greater than the first dimension of the connecting zone.
  • the exhaust duct has a length, defined in the first direction, greater than the width of the connecting zone, measured in the same direction.
  • the connection zone has dimensions approximately identical to those of the fastening flange. Therefore, the exhaust duct has a length exceeding the width of the fastening flange once it is mounted on the bolt body.
  • the outlet is disposed at one end of the exhaust duct which is furthest from the connection zone.
  • the oil is evacuated far from the area where the fastening flange is located. he there is therefore no risk of contact between the oil and this flange.
  • an area in relief relative to the upper face of the exhaust duct is disposed between said exhaust duct and an outer edge of the bolt body.
  • outer edge is meant here the edge that faces outwardly from the cylinder head body on the exhaust side. The raised area prevents oil from spilling out of the exhaust duct in the event of engine vibration or other events that may cause the oil to pass out of the exhaust duct laterally.
  • the engine can be inclined relative to the horizontal when the car is on a slope or straddling a sidewalk.
  • the motor can be installed inclined in the engine compartment, in particular between 8 ° and 35 ° relative to the horizontal.
  • the oil collected by the evacuation side exhaust pipe tends to flow laterally out of said duct. Thanks to the relief zone, the oil is kept in the exhaust duct.
  • the raised area may be a rib that extends along the exhaust duct.
  • the exhaust duct and the outlet are integral with the bolt body.
  • the exhaust duct and the outlet integrated into the cylinder head can be obtained by different methods, for example by a sand molding process.
  • the exhaust duct and the outlet are made by machining.
  • the exhaust duct is obtained by removing the material of the bolt body while the outlet is made by drilling. We therefore does not need to redo a new cylinder head to integrate the exhaust duct and outlet.
  • the invention also relates to a heat engine comprising a cylinder head made according to one of the preceding characteristics.
  • the invention also relates to a vehicle comprising such a heat engine.
  • FIG. 1 shows, schematically, a front view of the exhaust side of a cylinder head according to the invention; a catalytic converter covered by a heat shield being connected to said cylinder head;
  • FIG. 2 represents the same view as FIG. 1 and without heat shield
  • FIG. 3 represents a sectional view of the cylinder head along the plane III-III illustrated in FIG. 2;
  • FIG. 4 shows a perspective view and a top view of the cylinder head of Figure 1 in the absence of a cylinder head cover;
  • FIG. 5 represents a plan view from above of the breech of FIG. 1 without the breech cover
  • FIG. 6 represents a perspective view according to section VI-VI illustrated in FIG. 5.
  • a cylinder head 1 comprising a cylinder head body 2 and a cover 3 attached to one another, for example by screwing.
  • the cylinder body 2 incorporates intake ducts and exhaust ducts (not visible in the figures).
  • a first direction X extends from left to right of Figures 1 and 2.
  • a second direction Z perpendicular to the first direction X, extends from top to bottom of Figures 1 and 2.
  • the exhaust side 11 of the bolt body 2 has a width extending in the first direction X and a height extending in the second direction Z.
  • an exhaust manifold (not visible in the figures) is integrated in the cylinder head body 2.
  • exhaust manifold is meant the element which groups together all the gases coming out of the different ducts. exhaust to a single outlet.
  • a single exhaust outlet which is the outlet of the exhaust manifold. It communicates with a catalytic converter 4 connected to the cylinder head body 2.
  • the catalytic converter 4 is connected to the bolt body 2 via a fastening flange 5.
  • This catalytic converter 4 is part of an exhaust line whose function is to recover post-combustion gas, otherwise called exhaust, make it less toxic and then toss it out.
  • a heat shield 41 wraps around the catalytic converter 4 to protect it against heat and also limit its thermal radiation to other components less resistant to heat.
  • the fastening flange 5 is fixed on the bolt body 2 to an area called the connecting zone 23.
  • the connecting zone 23 has dimensions approximately identical to those of the fastening flange 5.
  • the exhaust manifold in the case where the exhaust manifold is not integrated in the bolt body, it may have several connecting zones, each being intended to receive a fastening flange.
  • the cylinder head cover 3 is masked to show an exhaust duct 24 made in the cylinder head body 2.
  • the exhaust duct 24 is a groove 240 made at a upper face 25 of the cylinder head body 2. This upper face 25 is opposite the valve cover 3.
  • the upper opening 245 of the exhaust pipe 24 is flush with the upper face 25 of the cylinder head body 2.
  • the evacuation duct 24 is made in a sidewalk zone 27 of the bolt body 2.
  • the sidewalk zone 27, of width d3, is opposite the bolt cover 3.
  • the exhaust duct 24 has a length Li in the first direction X and extending parallel to the outer edge 21 of the bolt body 2.
  • the exhaust duct 24 is located above the connection zone 23 of the barrel body.
  • the connecting zone 23 has a width Pi measured in the first direction X.
  • the length Li of the exhaust pipe 24 is greater than the width Pi of the connecting zone 23.
  • the connecting zone 23 has dimensions approximately identical to those of the fastening flange 5, it can be considered that the width of the connecting zone 23 is equivalent to that of the fastening flange 5 measured in the first direction X
  • the exhaust duct 24 exceeds the mounting flange 5 in the first direction.
  • the length L1 of the exhaust duct is 135.5 mm and the width of the fastening flange 5 is 83.5 mm.
  • the difference between the length Li of the exhaust duct 24 and the width of the fixing flange 5 is about 52 mm.
  • the outer edge 21 of the bolt body 2 is shifted outwardly relative to the outer edge 31 of the valve cover 3 so that the exhaust duct 24 is half covered by the valve cover 3 and half clear, as shown in Figure 3.
  • the liquid flowing along the walls of the valve cover 3 falls into the exhaust pipe 24 and that it is thus evacuated the area at risk.
  • an outlet 22 is connected to the discharge duct 24.
  • the outlet 22 is an orifice 220 pierced in a bottom 244 of the evacuation duct 24.
  • Bottom means the face opposite to the upper opening 245 of the exhaust duct 24.
  • the outlet 22 remains remote from the connection zone 23 and the fixing flange 5 by a distance d 1 measured in the first direction X.
  • This distance di is, for example, 42.4 mm.
  • the outlet 22 is located near a first end 241 of the exhaust duct 24 because this end is further from the connecting zone 23 than a second end 242.
  • the bottom 244 of the exhaust duct is inclined with respect to the first direction X with a slope directed towards the outlet 22, for example 1.5 °.
  • a slope directed towards the outlet 22 for example 1.5 °.
  • the slope may be inclined more than 1.5 °.
  • the exhaust duct 24 is disposed very close to the interface 6 between the cylinder head cover and the cylinder head body in order to immediately collect oil coming from this interface. In this way, the oil can not reach the fixing flange 5. Indeed, despite the fact that the fixing flange 5 and the catalytic converter 4 are covered by the heat shield 41, there is a space between the heat shield 64 and the cylinder head 2 due to the manufacturing tolerance of these two parts. Therefore, in the absence of the exhaust pipe 24, the oil can reach the fastening flange 5 passing through this gap.
  • a raised area 26 with respect to the upper opening 245 of the evacuation duct 24 is disposed between the discharge duct 24 and the outer edge 21 of the bolt body.
  • the relief zone 26 is a protruding band 260 which extends parallel to the evacuation conduit 24. This relief zone 26 prevents the lateral overflow of the oil from the evacuation duct 24, which can happen when the cylinder head 1 is in an inclined position. In other words, the relief zone 26 with the exhaust duct 24 make it possible to avoid any contact between the discharged liquid and the exhaust flange.
  • the exhaust duct may extend all along the exhaust side of the cylinder head.
  • the exhaust duct may have one of the open ends through which the oil is discharged to the outside.
  • the exhaust duct is connected to two evacuations. In this case, it comprises a first slope directed towards the first evacuation and a second slope towards the second evacuation.
  • the cylinder head according to the invention comprises an exhaust duct and an outlet for draining any oil seeps along the exhaust side out of the risk zone, namely the connection zone with the fastening flange. In this way, it avoids any contact between the oil and the catalytic converter, so any risk of ignition resulting from this contact.

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

Abstract

The invention relates to a cylinder head (1) of a heat engine, comprising: a cylinder head body (2) to be mounted on a cylinder block of the engine, said cylinder head body (2) having an exhaust side (11); and a cylinder head cover covering the cylinder head body (2). According to the invention, the cylinder head body (2) comprises an exhaust pipe (24) connected to an outlet (22) and located on the exhaust side (11), said exhaust pipe (24) being open opposite the cylinder head cover.

Description

Culasse pour moteur thermique équipée d'un conduit  Cylinder head for combustion engine equipped with a conduit
d' évacuation  evacuation
L' invention se rapporte à une culasse pour moteur thermique. Plus particulièrement, l'invention se rapporte à une culasse présentant un risque d'inflammation. The invention relates to a cylinder head for a heat engine. More particularly, the invention relates to a cylinder head having a risk of ignition.
De manière connue, une culasse pour moteur thermique comprend un corps de culasse dans lequel sont logés des conduits d'admission, des conduits d'échappement et des systèmes d'injection et/ou d'allumage, des systèmes de soupape et au moins un arbre à cames. Le corps de culasse présente un côté d'échappement et un côté d'admission. Par ailleurs, la culasse comprend un couvre-culasse qui est monté sur le corps de culasse.  In known manner, a cylinder head for a combustion engine comprises a cylinder head body in which intake ducts, exhaust ducts and injection and / or ignition systems, valve systems and at least one camshaft. The cylinder head has an exhaust side and an intake side. In addition, the cylinder head includes a cylinder head cover which is mounted on the cylinder head body.
Cependant, d'après une étude de sûreté de fonctionnement des moteurs thermiques, il y a un risque d'écoulement de l'huile provenant de l'interface entre le couvre-culasse et le corps de culasse. Cette huile peut être originaire d'une condensation de la vapeur d'huile au contact avec le couvre-culasse. La vapeur d'huile peut être issue de l'huile contenue à différents endroits du moteur où la température est élevée.  However, according to a thermal engine safety study, there is a risk of oil leaking from the interface between the cylinder head cover and the cylinder head. This oil may originate from a condensation of the oil vapor in contact with the cylinder head cover. The oil vapor can come from the oil contained in different parts of the engine where the temperature is high.
La coulure de l'huile peut atteindre une bride de fixation disposée sur le côté d'échappement du corps de culasse. Cette bride de fixation fait partie d'une ligne d'échappement permettant d'amener du gaz produit après la combustion vers un pot catalytique, ou catalyseur, pour le transformer en gaz comportant moins de constituants toxiques. Le pot catalytique, en état de fonctionnement, peut atteindre une température très élevée, notamment de l'ordre de 800 °C à 1000 °C.  The oil flow can reach a mounting flange on the exhaust side of the cylinder head. This fastening flange is part of an exhaust line for bringing the gas produced after combustion to a catalytic converter, or catalyst, to transform it into a gas with fewer toxic constituents. The catalytic converter, in its operating state, can reach a very high temperature, in particular of the order of 800 ° C. to 1000 ° C.
Ainsi, si l'huile atteint la bride de fixation, elle peut couler vers le pot catalytique. Le contact entre l'huile et ledit pot catalytique, surtout lorsque celui-ci est en fonctionnement à température élevée, risque de provoquer une inflammation, ce qui pourrait causer des dégâts importants au véhicule. La sécurité d'un conducteur dans ce cas est menacée . Thus, if the oil reaches the clamp, it can flow to the catalytic converter. The contact between the oil and said catalytic converter, especially when it is in operation at high temperature, may cause ignition, which could cause serious damage to the vehicle. The safety of a driver in this case is threatened.
Ainsi, un objectif de l'invention est de proposer une culasse qui ne présente pas de risque d' inflammation et assure la sécurité du conducteur dans le véhicule.  Thus, an object of the invention is to provide a cylinder head which does not present a risk of ignition and ensures the safety of the driver in the vehicle.
A cet effet, l'invention concerne une culasse de moteur thermique comprenant  For this purpose, the invention relates to a combustion engine cylinder head comprising
- un corps de culasse destiné à être monté sur un carter-cylindre du moteur ; ledit corps de culasse présentant un côté d'échappement; et  a cylinder head intended to be mounted on a crankcase of the engine; said cylinder body having an exhaust side; and
- un couvre-culasse coiffant le corps de culasse. - a cylinder head cover over the breech body.
Selon l'invention, le corps de culasse comprend un conduit d'évacuation situé du côté d'échappement et relié à une sortie; et ledit conduit d'évacuation étant ouvert en regard du couvre-culasse. According to the invention, the bolt body comprises an exhaust duct located on the exhaust side and connected to an outlet; and said exhaust duct being open opposite the cylinder head cover.
Dans ce document, on entend par « côté échappement » du corps de culasse le côté où sont disposés des conduits d'échappement. Il peut être aussi le côté où est disposé un collecteur d'échappement dans le cas où celui-ci est intégré dans le corps de culasse.  In this document, the term "exhaust side" of the cylinder head body the side where are arranged exhaust ducts. It can also be the side where is disposed an exhaust manifold in the case where it is integrated in the cylinder head.
Grâce à l'invention, lorsqu'il y un suintement de l'huile au niveau de l'interface entre le corps de culasse et le couvre-culasse du côté d'échappement, l'huile est immédiatement recueillie par le conduit d'évacuation et amenée vers la sortie. Le conduit d'évacuation est une barrière empêchant l'huile de tomber sur une bride de fixation. De cette manière, l'huile ne peut atteindre ni la bride de fixation ni le pot catalytique relié à ladite bride. Il n'y a donc plus de risque de contact entre l'huile et le pot catalytique fonctionnant à température élevée.  Thanks to the invention, when there is a seepage of the oil at the interface between the cylinder head body and the cylinder head cover on the exhaust side, the oil is immediately collected by the exhaust pipe and brought to the exit. The exhaust vent is a barrier to prevent oil from falling onto a mounting flange. In this way, the oil can not reach either the fixing flange or the catalytic converter connected to said flange. There is therefore no risk of contact between the oil and the catalytic converter operating at high temperature.
A noter que le suintement d'huile entre le corps de culasse et le couvre-culasse n'est possible que s'il y a une défaillance d'un joint d'étanchéité interposé entre ces deux pièces . Note that the oozing of oil between the cylinder head and the cylinder head cover is only possible if there is a failure of a seal interposed between these two parts.
Selon une autre caractéristique de l'invention, le conduit d'évacuation comprend une pente dirigée vers la sortie. De cette manière, l'huile coule plus rapidement vers la sortie et ne stagne pas dans le conduit d'évacuation. Cette structure est particulièrement efficace en cas de fort écoulement de l'huile.  According to another characteristic of the invention, the exhaust duct comprises a slope directed towards the outlet. In this way, the oil flows more quickly to the outlet and does not stagnate in the exhaust duct. This structure is particularly effective in case of heavy oil flow.
Selon une caractéristique de l'invention, la sortie est un orifice. A titre d'exemple, le conduit d'évacuation est une rainure ouverte à sa face supérieure. L'orifice est réalisé au fond de la rainure.  According to a characteristic of the invention, the output is an orifice. For example, the exhaust duct is an open groove at its upper face. The orifice is made at the bottom of the groove.
Dans la présente description, le corps de culasse présente une largeur s' étendant selon une première direction et une hauteur s' étendant selon une deuxième direction. Le corps de culasse comprend au moins une zone de liaison destinée à recevoir une bride de fixation d'une ligne d'échappement et qui présente une première dimension définie selon la première direction. Selon une caractéristique de l'invention, le conduit d'évacuation présente une première dimension, définie selon la première direction, supérieure à la première dimension de la zone de liaison.  In the present description, the yoke body has a width extending in a first direction and a height extending in a second direction. The bolt body comprises at least one connecting zone intended to receive an attachment flange of an exhaust line and which has a first dimension defined in the first direction. According to one characteristic of the invention, the evacuation duct has a first dimension, defined in the first direction, greater than the first dimension of the connecting zone.
En d'autres termes, le conduit d'évacuation a une longueur, définie selon la première direction, supérieure à la largeur de la zone de liaison, mesurée dans cette même direction. Or, on sait que la zone de liaison a des dimensions à peu près identiques à celles de la bride de fixation. Par conséquent, le conduit d'évacuation a une longueur dépassant la largeur de la bride de fixation une fois que celle-ci est montée sur le corps de culasse.  In other words, the exhaust duct has a length, defined in the first direction, greater than the width of the connecting zone, measured in the same direction. Now, it is known that the connection zone has dimensions approximately identical to those of the fastening flange. Therefore, the exhaust duct has a length exceeding the width of the fastening flange once it is mounted on the bolt body.
Selon le paragraphe précédent, la sortie est disposée à une extrémité du conduit d'évacuation qui est la plus éloignée de la zone de liaison. De cette manière, l'huile est évacuée loin de la zone où se trouve la bride de fixation. Il n'y a donc aucun risque de contact entre l'huile et cette bride . According to the preceding paragraph, the outlet is disposed at one end of the exhaust duct which is furthest from the connection zone. In this way, the oil is evacuated far from the area where the fastening flange is located. he there is therefore no risk of contact between the oil and this flange.
Selon une caractéristique de l'invention, une zone en relief par rapport à la face supérieure du conduit d'évacuation est disposée entre ledit conduit d'évacuation et un bord externe du corps de culasse. On entend ici par « bord externe » le bord qui est orienté vers l'extérieur du corps de culasse du côté d'échappement. La zone en relief empêche le débordement de l'huile hors du conduit d'évacuation en cas de vibration du moteur ou d'autres événements pouvant provoquer le dépassement latéral de l'huile hors du conduit d' évacuation .  According to one characteristic of the invention, an area in relief relative to the upper face of the exhaust duct is disposed between said exhaust duct and an outer edge of the bolt body. By "outer edge" is meant here the edge that faces outwardly from the cylinder head body on the exhaust side. The raised area prevents oil from spilling out of the exhaust duct in the event of engine vibration or other events that may cause the oil to pass out of the exhaust duct laterally.
Par ailleurs, le moteur peut être incliné par rapport à l'horizontale lorsque la voiture est sur une pente ou à cheval sur un trottoir. Dans un autre exemple, le moteur peut être installé de manière inclinée dans le compartiment moteur, notamment entre 8° et 35° par rapport à l'horizontale. Dans ces deux cas, l'huile collectée par le conduit d'évacuation du côté d'échappement a tendance à couler latéralement hors dudit conduit. Grâce à la zone de relief, l'huile est maintenue dans le conduit d'évacuation. La zone en relief peut être une nervure qui s'étend le long du conduit d'évacuation.  In addition, the engine can be inclined relative to the horizontal when the car is on a slope or straddling a sidewalk. In another example, the motor can be installed inclined in the engine compartment, in particular between 8 ° and 35 ° relative to the horizontal. In both cases, the oil collected by the evacuation side exhaust pipe tends to flow laterally out of said duct. Thanks to the relief zone, the oil is kept in the exhaust duct. The raised area may be a rib that extends along the exhaust duct.
Selon un mode de réalisation de l'invention, le conduit d'évacuation et la sortie sont venus de matière avec le corps de culasse. Le conduit d'évacuation et la sortie intégrés au corps de culasse peuvent être obtenus par de différents procédés, par exemple par un procédé de moulage en sable .  According to one embodiment of the invention, the exhaust duct and the outlet are integral with the bolt body. The exhaust duct and the outlet integrated into the cylinder head can be obtained by different methods, for example by a sand molding process.
Alternativement, le conduit d'évacuation et la sortie sont réalisés par usinage. A titre d'exemple, le conduit d'évacuation est obtenu par enlèvement de la matière du corps de culasse tandis que la sortie est réalisée par perçage. On n'a donc pas besoin de refaire un nouveau corps de culasse pour y intégrer le conduit d'évacuation et la sortie. Alternatively, the exhaust duct and the outlet are made by machining. For example, the exhaust duct is obtained by removing the material of the bolt body while the outlet is made by drilling. We therefore does not need to redo a new cylinder head to integrate the exhaust duct and outlet.
L' invention concerne également un moteur thermique comprenant une culasse réalisée selon l'une des caractéristiques précédentes.  The invention also relates to a heat engine comprising a cylinder head made according to one of the preceding characteristics.
L' invention concerne aussi un véhicule comprenant un tel moteur thermique.  The invention also relates to a vehicle comprising such a heat engine.
D'autres caractéristiques et avantages innovants ressortiront de la description ci-après, fournie à titre indicatif et nullement limitatif, en référence aux dessins annexés, dans lesquels :  Other characteristics and innovative advantages will emerge from the following description, provided for information only and in no way limitative, with reference to the appended drawings, in which:
— la figure 1 représente, de manière schématique, une vue de face du côté d'échappement d'une culasse selon l'invention ; un pot catalytique couvert par un écran thermique étant relié à ladite culasse ;  - Figure 1 shows, schematically, a front view of the exhaust side of a cylinder head according to the invention; a catalytic converter covered by a heat shield being connected to said cylinder head;
— la figure 2 représente la même vue que la figure 1 et sans écran thermique ;  FIG. 2 represents the same view as FIG. 1 and without heat shield;
— la figures 3 représente une vue de coupe de la culasse selon le plan III-III illustré à la figure 2 ;  FIG. 3 represents a sectional view of the cylinder head along the plane III-III illustrated in FIG. 2;
- la figure 4 représente une vue en perspective et une vue de dessus de la culasse de la figure 1 en absence d'un couvre-culasse;  - Figure 4 shows a perspective view and a top view of the cylinder head of Figure 1 in the absence of a cylinder head cover;
— la figure 5 représente une vue en plan de dessus de la culasse de figure 1 sans le couvre-culasse ;  FIG. 5 represents a plan view from above of the breech of FIG. 1 without the breech cover;
— la figure 6 représente une vue en perspective selon la coupe VI-VI illustrée à la figure 5.  FIG. 6 represents a perspective view according to section VI-VI illustrated in FIG. 5.
En référence aux figures 1 et 2, on voit un côté d'échappement 11 d'une culasse 1 comprenant un corps de culasse 2 et un couvre-coulasse 3 fixés l'un à l'autre, par exemple par vissage. Le corps de culasse 2 intègre des conduits d'admission et des conduits d'échappement (non visibles sur les figures) .  Referring to Figures 1 and 2, there is an exhaust side 11 of a cylinder head 1 comprising a cylinder head body 2 and a cover 3 attached to one another, for example by screwing. The cylinder body 2 incorporates intake ducts and exhaust ducts (not visible in the figures).
Dans la présente description, sauf indication contraire, les termes « haut », « bas », « supérieur », « inférieur » correspondent respectivement au haut et au bas des figures 1 et 2 telles qu'elles sont présentées. Une première direction X s'étend de gauche à droite des figures 1 et 2. Par ailleurs, une deuxième direction Z, perpendiculaire à la première direction X, s'étend de haut en bas des figures 1 et 2. Le côté d'échappement 11 du corps de culasse 2 présente une largeur s' étendant selon la première direction X et une hauteur s' étendant selon la deuxième direction Z. In this description, unless otherwise indicated, the terms "high", "low", "superior", "Lower" respectively correspond to the top and bottom of Figures 1 and 2 as shown. A first direction X extends from left to right of Figures 1 and 2. Furthermore, a second direction Z, perpendicular to the first direction X, extends from top to bottom of Figures 1 and 2. The exhaust side 11 of the bolt body 2 has a width extending in the first direction X and a height extending in the second direction Z.
Selon l'invention et dans cet exemple, un collecteur d'échappement (non visible sur les figures) est intégré dans le corps de culasse 2. On entend par collecteur d'échappement l'élément qui regroupe tous les gaz sortant des différents conduits d'échappement vers une seule sortie. Ainsi, sur le côté d'échappement 11, il y a une seule sortie d'échappement qui est la sortie du collecteur d'échappement. Celle-ci communique avec un pot catalytique 4 relié au corps de culasse 2.  According to the invention and in this example, an exhaust manifold (not visible in the figures) is integrated in the cylinder head body 2. By exhaust manifold is meant the element which groups together all the gases coming out of the different ducts. exhaust to a single outlet. Thus, on the exhaust side 11, there is a single exhaust outlet which is the outlet of the exhaust manifold. It communicates with a catalytic converter 4 connected to the cylinder head body 2.
Le pot catalytique 4 est relié au corps de culasse 2 par l'intermédiaire d'une bride de fixation 5. Ce pot catalytique 4 fait partie d'une ligne d'échappement qui a pour fonction de récupérer du gaz post-combustion, autrement appelé gaz d'échappement, de le rendre moins toxique et puis de le rejeter vers l'extérieur. Un écran thermique 41 enveloppe autour du pot catalytique 4 afin de le protéger contre la chaleur et également de limiter son rayonnement thermique vers d'autres composants moins résistants à la chaleur .  The catalytic converter 4 is connected to the bolt body 2 via a fastening flange 5. This catalytic converter 4 is part of an exhaust line whose function is to recover post-combustion gas, otherwise called exhaust, make it less toxic and then toss it out. A heat shield 41 wraps around the catalytic converter 4 to protect it against heat and also limit its thermal radiation to other components less resistant to heat.
La bride de fixation 5 vient se fixer sur le corps de culasse 2 à une zone appelée zone de liaison 23. La zone de liaison 23 a des dimensions à peu près identiques à celles de la bride de fixation 5. Bien entendu, dans le cas où le collecteur d'échappement n'est pas intégré dans le corps de culasse, celui-ci peut avoir plusieurs zones de liaison, chacune étant destinée à recevoir une bride de fixation. Alternativement, il peut y avoir une unique zone de liaison pour une seule bride de fixation qui couvre toutes les sorties d'échappement. The fastening flange 5 is fixed on the bolt body 2 to an area called the connecting zone 23. The connecting zone 23 has dimensions approximately identical to those of the fastening flange 5. Of course, in the case where the exhaust manifold is not integrated in the bolt body, it may have several connecting zones, each being intended to receive a fastening flange. Alternatively, there may be a single bonding area for a single fastening flange that covers all the exhaust outlets.
Sur la figure 3, on y voit clairement une interface 6, ou surface de contact, entre le couvre-culasse et le corps de culasse. Dans cet exemple, le bord externe 21 du corps de culasse dépasse du bord externe 31 du couvre-culasse selon une troisième direction Y. Cette troisième direction Y est perpendiculaire aux première et deuxième directions X et Z .  In Figure 3, there is clearly an interface 6, or contact surface, between the cylinder head cover and the cylinder head. In this example, the outer edge 21 of the bolt body protrudes from the outer edge 31 of the cylinder head cover in a third direction Y. This third direction Y is perpendicular to the first and second directions X and Z.
Sur la figure 4, le couvre-culasse 3 est masqué pour montrer un conduit d'évacuation 24 réalisé dans le corps de culasse 2. Selon l'invention et dans cet exemple, le conduit d'évacuation 24 est une rainure 240 réalisée à une face supérieure 25 du corps de culasse 2. Cette face supérieure 25 est en regard du couvre-culasse 3. Ainsi, on peut dire que l'ouverture supérieure 245 du conduit d'évacuation 24 affleure la face supérieure 25 du corps de culasse 2.  In FIG. 4, the cylinder head cover 3 is masked to show an exhaust duct 24 made in the cylinder head body 2. According to the invention and in this example, the exhaust duct 24 is a groove 240 made at a upper face 25 of the cylinder head body 2. This upper face 25 is opposite the valve cover 3. Thus, it can be said that the upper opening 245 of the exhaust pipe 24 is flush with the upper face 25 of the cylinder head body 2.
De manière précise, le conduit d'évacuation 24 est réalisé dans une zone de trottoir 27 du corps de culasse 2. La zone de trottoir 27, de largeur d3, est en regard du couvre-culasse 3.  Specifically, the evacuation duct 24 is made in a sidewalk zone 27 of the bolt body 2. The sidewalk zone 27, of width d3, is opposite the bolt cover 3.
Le conduit d'évacuation 24 a une longueur Li selon la première direction X et s' étendant parallèlement au bord externe 21 du corps de culasse 2. Le conduit d'évacuation 24 est situé au-dessus de la zone de liaison 23 du corps de culasse et de la bride de fixation 5. La zone de liaison 23 a une largeur Pi mesurée selon la première direction X. La longueur Li du conduit d'évacuation 24 est supérieure à la largeur Pi de la zone de liaison 23.  The exhaust duct 24 has a length Li in the first direction X and extending parallel to the outer edge 21 of the bolt body 2. The exhaust duct 24 is located above the connection zone 23 of the barrel body. The connecting zone 23 has a width Pi measured in the first direction X. The length Li of the exhaust pipe 24 is greater than the width Pi of the connecting zone 23.
Puisque la zone de liaison 23 a des dimensions à peu près identiques à celles de la bride de fixation 5, on peut considérer que la largeur de la zone de liaison 23 équivaut à la celle de la bride de fixation 5 mesurée selon la première direction X. Ainsi, le conduit d'évacuation 24 dépasse la bride de fixation 5 dans la première direction. A titre d'exemple, la longueur Ll du conduit d'évacuation est de 135,5 mm et la largeur de la bride de fixation 5 est de 83,5 mm. La différence entre la longueur Li du conduit d'évacuation 24 et la largeur de la bride de fixation 5 est d'environ 52 mm. Since the connecting zone 23 has dimensions approximately identical to those of the fastening flange 5, it can be considered that the width of the connecting zone 23 is equivalent to that of the fastening flange 5 measured in the first direction X Thus, the exhaust duct 24 exceeds the mounting flange 5 in the first direction. By way of example, the length L1 of the exhaust duct is 135.5 mm and the width of the fastening flange 5 is 83.5 mm. The difference between the length Li of the exhaust duct 24 and the width of the fixing flange 5 is about 52 mm.
Comme décrit auparavant, le bord externe 21 du corps de culasse 2 est décalé vers l'extérieur par rapport au bord externe 31 du couvre-culasse 3 de manière à ce que le conduit d'évacuation 24 soit à moitié couvert par le couvre-culasse 3 et à moitié dégagée, comme illustré à la figure 3. Avec une telle configuration, on peut imaginer que le liquide ruisselant le long des parois du couvre-culasse 3 tombe dans le conduit d'évacuation 24 et qu'il soit ainsi évacué de la zone à risque.  As previously described, the outer edge 21 of the bolt body 2 is shifted outwardly relative to the outer edge 31 of the valve cover 3 so that the exhaust duct 24 is half covered by the valve cover 3 and half clear, as shown in Figure 3. With such a configuration, one can imagine that the liquid flowing along the walls of the valve cover 3 falls into the exhaust pipe 24 and that it is thus evacuated the area at risk.
Sur les figures 5 et 6, une sortie 22 est reliée au conduit d'évacuation 24. Selon l'invention et dans cet exemple, la sortie 22 est un orifice 220 percé dans un fond 244 du conduit d'évacuation 24. Ici, on entend par « fond » la face opposée à l'ouverture supérieure 245 du conduit d'évacuation 24.  In FIGS. 5 and 6, an outlet 22 is connected to the discharge duct 24. According to the invention and in this example, the outlet 22 is an orifice 220 pierced in a bottom 244 of the evacuation duct 24. Here, "Bottom" means the face opposite to the upper opening 245 of the exhaust duct 24.
La sortie 22 reste éloignée de la zone de liaison 23 et de la bride de fixation 5 d'une distance di mesurée selon la première direction X. Cette distance di est par exemple de 42, 4 mm. Dans cet exemple, la sortie 22 est située proche d'une première extrémité 241 du conduit d'évacuation 24 car cette extrémité est plus éloignée de la zone de liaison 23 qu'une deuxième extrémité 242.  The outlet 22 remains remote from the connection zone 23 and the fixing flange 5 by a distance d 1 measured in the first direction X. This distance di is, for example, 42.4 mm. In this example, the outlet 22 is located near a first end 241 of the exhaust duct 24 because this end is further from the connecting zone 23 than a second end 242.
Selon l'invention et dans cet exemple, le fond 244 du conduit d'évacuation est incliné par rapport à la première direction X avec une pente dirigée vers la sortie 22, par exemple de 1,5°. De cette manière, lorsque l'huile est récupérée dans le conduit d'évacuation 24, elle est rapidement amenée vers l'orifice 220 et évacuée vers l'extérieur loin de la zone de liaison 23 et donc loin de la bride de fixation 5. Le sens d'écoulement de l'huile est illustré par des flèches F i sur la figure 4. According to the invention and in this example, the bottom 244 of the exhaust duct is inclined with respect to the first direction X with a slope directed towards the outlet 22, for example 1.5 °. In this way, when the oil is recovered in the exhaust pipe 24, it is quickly brought to the orifice 220 and discharged to the outside of the connection zone 23 and therefore far from the fixing flange 5. The direction of flow of the oil is illustrated by arrows F i in FIG.
Dans un autre exemple de réalisation, en fonction de la largeur d3 de la zone de trottoir 27, la pente peut être inclinée plus que de 1,5°.  In another embodiment, depending on the width d3 of the curb zone 27, the slope may be inclined more than 1.5 °.
Le conduit d'évacuation 24 est disposé très proche de l'interface 6 entre le couvre-culasse et le corps de culasse afin de recueillir immédiatement de l'huile provenant de cette interface. De cette manière, l'huile ne peut pas atteindre la bride de fixation 5. En effet, malgré le fait que la bride de fixation 5 et le pot catalytique 4 sont couverts par l'écran thermique 41, il existe un espace entre l'écran thermique 64 et le corps de culasse 2 dû à la tolérance de fabrication de ces deux pièces. Par conséquent, en absence du conduit d'évacuation 24, l'huile peut atteindre la bride de fixation 5 en passant à travers cet espace.  The exhaust duct 24 is disposed very close to the interface 6 between the cylinder head cover and the cylinder head body in order to immediately collect oil coming from this interface. In this way, the oil can not reach the fixing flange 5. Indeed, despite the fact that the fixing flange 5 and the catalytic converter 4 are covered by the heat shield 41, there is a space between the heat shield 64 and the cylinder head 2 due to the manufacturing tolerance of these two parts. Therefore, in the absence of the exhaust pipe 24, the oil can reach the fastening flange 5 passing through this gap.
De manière optionnelle, comme illustré à la figure 6, une zone en relief 26 par rapport à l'ouverture supérieure 245 du conduit d'évacuation 24 est disposée entre le conduit d'évacuation 24 et le bord externe 21 du corps de culasse. Dans cet exemple, la zone en relief 26 est une bande en saillie 260 qui s'étend parallèlement au conduit d'évacuation 24. Cette zone en relief 26 empêche le débordement latéral de l'huile hors du conduit d'évacuation 24, ce qui peut arriver lorsque la culasse 1 est en position inclinée. Autrement dit, la zone en relief 26 avec le conduit d'évacuation 24 permettent d'éviter tout contact entre le liquide évacué et la bride échappement.  Optionally, as illustrated in FIG. 6, a raised area 26 with respect to the upper opening 245 of the evacuation duct 24 is disposed between the discharge duct 24 and the outer edge 21 of the bolt body. In this example, the relief zone 26 is a protruding band 260 which extends parallel to the evacuation conduit 24. This relief zone 26 prevents the lateral overflow of the oil from the evacuation duct 24, which can happen when the cylinder head 1 is in an inclined position. In other words, the relief zone 26 with the exhaust duct 24 make it possible to avoid any contact between the discharged liquid and the exhaust flange.
La distance d2, mesurée selon la troisième direction The distance d2 measured in the third direction
Y, entre le conduit d'évacuation 24 du bord externe 21 du corps de culasse peut être d'environ 4,7 mm. Bien entendu, il est possible d'apporter des modifications à l'invention sans pour autant sortir du cadre de celle-ci. Y, between the exhaust duct 24 of the outer edge 21 of the cylinder head body may be about 4.7 mm. Of course, it is possible to make modifications to the invention without departing from the scope thereof.
Par exemple, le conduit d'évacuation peut s'étendre tout le long du côté d'échappement de la culasse. Dans ce cas, le conduit d'évacuation peut avoir une des extrémités ouverte par laquelle l'huile est évacuée vers l'extérieur.  For example, the exhaust duct may extend all along the exhaust side of the cylinder head. In this case, the exhaust duct may have one of the open ends through which the oil is discharged to the outside.
Dans un autre exemple, le conduit d'évacuation est relié à deux évacuations. Dans ce cas, il comprend une première pente dirigée vers la première évacuation et une deuxième pente vers la deuxième évacuation.  In another example, the exhaust duct is connected to two evacuations. In this case, it comprises a first slope directed towards the first evacuation and a second slope towards the second evacuation.
La culasse selon l'invention comprend un conduit d'évacuation et une sortie permettant de drainer les éventuels suintements d'huile le long du côté d'échappement hors de la zone à risque, à savoir la zone de liaison avec la bride de fixation. De cette manière, on évite tout contact entre l'huile et le pot catalytique, donc tout risque d'inflammation résultant de ce contact.  The cylinder head according to the invention comprises an exhaust duct and an outlet for draining any oil seeps along the exhaust side out of the risk zone, namely the connection zone with the fastening flange. In this way, it avoids any contact between the oil and the catalytic converter, so any risk of ignition resulting from this contact.

Claims

REVENDICATIONS
1. Culasse (1) de moteur thermique comprenant1. Cylinder head (1) comprising
- un corps de culasse (2) destiné à être monté sur un carter-cylindre du moteur ; ledit corps de culasse (2) présentant un côté d'échappement (11); et - a cylinder head body (2) intended to be mounted on a crankcase of the engine; said yoke body (2) having an exhaust side (11); and
- un couvre-culasse (3) coiffant le corps de culasse (2) ;  - a cylinder head cover (3) covering the cylinder head body (2);
ladite culasse (1) étant caractérisée en ce que le corps de culasse (2) comprend un conduit d'évacuation (24) situé du côté d'échappement (11) et relié à une sortie (22), ledit conduit d'évacuation (24) étant ouvert en regard du couvre-culasse (3) .  said yoke (1) being characterized in that the yoke body (2) comprises an exhaust duct (24) located on the exhaust side (11) and connected to an outlet (22), said exhaust duct ( 24) being open next to the cylinder head cover (3).
2. Culasse (1) selon la revendication 1, caractérisée en ce que le conduit d'évacuation (24) comprend une pente dirigée vers la sortie (22) .  2. Cylinder head (1) according to claim 1, characterized in that the discharge duct (24) comprises a slope directed towards the outlet (22).
3. Culasse (1) selon la revendication 2 ou selon la revendication 1, caractérisée en ce que la sortie (22) est un orifice (220) .  3. Cylinder head (1) according to claim 2 or according to claim 1, characterized in that the outlet (22) is an orifice (220).
4. Culasse (1) selon l'une des revendication 1 à 3, le corps de culasse (2) présentant une largeur s' étendant selon une première direction (X) et une hauteur s' étendant selon une deuxième direction (Z) , le corps de culasse (11) comprenant au moins une zone de liaison (23) destinée à recevoir une bride de fixation (5) d'une ligne d'échappement et présentant une première dimension (Pi) définie selon la première direction (X), ladite culasse (1) étant caractérisée en ce que le conduit d'évacuation (24) présente une première dimension (Li) , définie selon la première direction (X) , supérieure à la première dimension (Pi) de la zone de liaison (23) .  4. Cylinder head (1) according to one of claims 1 to 3, the yoke body (2) having a width extending in a first direction (X) and a height extending in a second direction (Z), the yoke body (11) comprising at least one connecting zone (23) for receiving an attachment flange (5) of an exhaust line and having a first dimension (Pi) defined in the first direction (X) , said yoke (1) being characterized in that the discharge duct (24) has a first dimension (Li), defined in the first direction (X), greater than the first dimension (Pi) of the connecting zone ( 23).
5. Culasse (1) selon la revendication 4, caractérisée en ce que la sortie (22) est disposée à une extrémité (241) du conduit d'évacuation (21) qui est la plus éloignée de la zone de liaison (23) . Cylinder head (1) according to claim 4, characterized in that the outlet (22) is arranged at a end (241) of the exhaust duct (21) which is furthest from the connection zone (23).
6. Culasse (1) selon l'une des revendications 1 à 5, caractérisé en ce qu'une zone en relief (26) par rapport à la face supérieure (245) du conduit d'évacuation (24) est disposée entre ledit conduit d'évacuation (24) et un bord externe (21) du corps de culasse (2) .  6. Cylinder head (1) according to one of claims 1 to 5, characterized in that a raised area (26) relative to the upper face (245) of the discharge duct (24) is disposed between said duct discharge (24) and an outer edge (21) of the bolt body (2).
7. Culasse (1) selon l'une des revendications 1 à 6, caractérisée en ce que le conduit d'évacuation (24) et la sortie (22) sont venus de matière avec le corps de culasse (2) .  7. Cylinder head (1) according to one of claims 1 to 6, characterized in that the exhaust duct (24) and the outlet (22) are integral with the cylinder head body (2).
8. Culasse (1) selon l'une des revendications 1 à 6, caractérisé en ce que que le conduit d'évacuation (24) et la sortie (22) sont réalisés par usinage.  8. Cylinder head (1) according to one of claims 1 to 6, characterized in that the discharge duct (24) and the outlet (22) are made by machining.
9. Moteur à combustion thermique caractérisé en ce qu'il comprend une culasse (1) selon l'une des revendications précédentes .  9. A combustion engine characterized in that it comprises a yoke (1) according to one of the preceding claims.
10. Véhicule automobile caractérisé en ce qu'il comprend un moteur à combustion thermique selon la revendication 9.  10. Motor vehicle characterized in that it comprises a combustion engine according to claim 9.
PCT/EP2018/069416 2017-07-19 2018-07-17 Cylinder head for a heat engine, equipped with an exhaust pipe WO2019016220A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP18738366.6A EP3655639B1 (en) 2017-07-19 2018-07-17 Cylinder head for a motor equipped with an evacuation conduit

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FR1756861 2017-07-19
FR1756861A FR3069285B1 (en) 2017-07-19 2017-07-19 CYLINDER HEAD FOR THERMAL ENGINE EQUIPPED WITH AN EXHAUST DUCT

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4553510A (en) * 1982-10-27 1985-11-19 Honda Giken Kogyo Kabushiki Kaisha Cylinder head for internal combustion engines
US4771745A (en) * 1986-03-22 1988-09-20 Mitsubishi Jidosha Kogyo Kabushiki Kaishi Structure of internal combustion engine
EP1447533A1 (en) * 2003-02-14 2004-08-18 Nissan Motor Company, Limited Blowby gas circulating apparatus for an internal combustion engine
EP1467069A2 (en) * 2003-04-07 2004-10-13 Nissan Motor Company, Limited Crankcase emission control device

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4553510A (en) * 1982-10-27 1985-11-19 Honda Giken Kogyo Kabushiki Kaisha Cylinder head for internal combustion engines
US4771745A (en) * 1986-03-22 1988-09-20 Mitsubishi Jidosha Kogyo Kabushiki Kaishi Structure of internal combustion engine
EP1447533A1 (en) * 2003-02-14 2004-08-18 Nissan Motor Company, Limited Blowby gas circulating apparatus for an internal combustion engine
EP1467069A2 (en) * 2003-04-07 2004-10-13 Nissan Motor Company, Limited Crankcase emission control device

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FR3069285B1 (en) 2021-01-29
EP3655639A1 (en) 2020-05-27
FR3069285A1 (en) 2019-01-25
EP3655639B1 (en) 2023-05-10

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