EP1398468A1 - Pressure relief valve for combustion engine , in particular for motor vehicle - Google Patents

Pressure relief valve for combustion engine , in particular for motor vehicle Download PDF

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Publication number
EP1398468A1
EP1398468A1 EP03292247A EP03292247A EP1398468A1 EP 1398468 A1 EP1398468 A1 EP 1398468A1 EP 03292247 A EP03292247 A EP 03292247A EP 03292247 A EP03292247 A EP 03292247A EP 1398468 A1 EP1398468 A1 EP 1398468A1
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EP
European Patent Office
Prior art keywords
cover
plug
vacuum
cylinder head
oil
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Granted
Application number
EP03292247A
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German (de)
French (fr)
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EP1398468B1 (en
Inventor
Martial Dore
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.)
PSA Automobiles SA
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Peugeot Citroen Automobiles SA
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Application filed by Peugeot Citroen Automobiles SA filed Critical Peugeot Citroen Automobiles SA
Publication of EP1398468A1 publication Critical patent/EP1398468A1/en
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    • 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
    • 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
    • F01M13/0405—Crankcase ventilating or breathing having means for purifying air before leaving crankcase, e.g. removing oil arranged in covering members apertures, e.g. caps

Definitions

  • the present invention relates to a vacuum limiter device for internal combustion engine, in particular of a motor vehicle.
  • It relates more particularly to a device for limiting vacuum for internal combustion engine to reduce its size on a cover of the engine cylinder head.
  • turbo-compressed internal combustion engines or supercharged require arrangement in the gas re-suction circuit of the housing, generally designated by the English term “blowby", of a depression to eliminate any risk of re-aspiration of the oil in the air intake ducts.
  • Such a vacuum limiter is generally arranged on one of the cylinder head covers near the oil filler cap and nozzle for recycling crankcase gases.
  • the object of the invention is to propose a vacuum limiter device for internal combustion engine which can remedy the mentioned drawback above.
  • the present invention relates to a device for limiting vacuum for internal combustion engine, especially of a vehicle automobile arranged on a cylinder head cover and comprising a membrane mobile deformable under the action of the vacuum prevailing in the casing of the engine to prevent re-suction of oil at the intake in case of strong vacuum, the cover being further provided with an opening allowing the introduction of oil into the crankcase which is intended to be blocked by a plug generally designated as an "oil filling plug", characterized in that the movable deformable membrane of the vacuum limiter is attached to the removable oil filler cap and cooperates when the cap is arranged on the cover with a movable part which is arranged in said cylinder head cover and capable of obstructing a discharge channel for gas produced on the cover as a function of the displacements of the membrane flexible deformable.
  • the channel gas evacuation is carried out foundry with the cylinder head cover.
  • the evacuation channel protrudes to the right of the cylinder head orifice and is constituted a first and a second conduit parallel to each other set up communication via a hole perpendicular to said conduits further ensuring the housing of the moving part which has the general shape a U whose free ends of the branches are folded down to ensure a abutment of said part when the plug is removed from the cover and in that this moving part is provided on its branches with orifices arranged so as to allow, depending on its displacement, the communication of two conduits or the obturation of the first conduit.
  • the moving part is also provided with a return spring arranged inside thereof which is supported by one of its ends on the bottom of the piece and by its opposite end on the face of a hole closure plug.
  • FIGs 1 to 3 There is shown in Figures 1 to 3, a cylinder head cover 1 of a internal combustion engine.
  • This cover 1 is provided in a conventional manner an opening 2 allowing the introduction of oil into the crankcase of the engine which is intended to be obstructed by a plug 3 generally designated "plug filling with oil ”.
  • This cover 1 is also provided with a device for vacuum limiter conventionally constituted by a flexible membrane 4 mobile deformable under the action of the vacuum prevailing in the casing of the engine to prevent re-suction of oil at the intake in case of strong depression.
  • the movable membrane 4 of the limiter vacuum is attached to the removable oil filling plug 3 and cooperates when the plug 3 is arranged on the cover 1 with a moving part 5 which is arranged in said cylinder head cover and able to obstruct a channel gas evacuation carried out on the cover.
  • this movable part 5 in particular under the action of the membrane 4 is able to be recalled to its inactive position, that is to say free passage of gases through the discharge channel by through a spring 6 arranged for example coaxially inside the moving part 5 as explained in more detail below.
  • the gas evacuation channel is made of foundry with the cover 1 of the breech. This channel is protruding to the right of the orifice 2 of the cylinder head and is consisting for example of a first 7 and a second 8 leads parallel one to the other and put in communication via a hole 9 perpendicular to said conduits 7 and 8, as illustrated in Figures 1 to 3.
  • This hole 9 also provides housing for the moving part 5 having the general shape of a U whose free ends of the branches are folded down in order to ensure a stop for said part when the plug 3 is removed from the lid.
  • This part 5 is provided on its branches with orifices 10 arranged so as to allow, depending on its displacement, either setting communication of the two conduits 7 and 8, i.e. the closure of the first conduit 7.
  • the moving part 5 is also provided, as described more top, a return spring 6 arranged for example inside thereof which is supported by one of its ends on the bottom of the part 5 and by its opposite end on the face of a closure plug 11 of the bore 9.
  • the device for vacuum limiter is relatively simple to perform and reduces considerably its size on a cylinder head cover by grouping two distinct functions namely vacuum limiter and stopper filling with oil.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Cylinder Crankcases Of Internal Combustion Engines (AREA)
  • Hybrid Electric Vehicles (AREA)
  • Supercharger (AREA)
  • Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)
  • Motor Or Generator Frames (AREA)
  • Pressure Vessels And Lids Thereof (AREA)

Abstract

The suction pressure limiter is arranged on the cylinder head cover (1) and comprises a deformable membrane (4) moved under the action of the suction pressure existing in the engine sump in order to prevent the re-aspiration of the oil into the inlet in the event of a strong suction pressure. The cover has an opening enabling the introduction of oil into the sump which is intended to be blocked by a filler plug (3). The membrane is fixed on the removable oil filler plug and engages with a movable part (5) in the cylinder head cover and blocks a gas evacuation channel (7,8,9) made in the cover according to the displacements of the membrane.

Description

La présente invention concerne un dispositif de limiteur de dépression pour moteur à combustion interne, notamment d'un véhicule automobile.The present invention relates to a vacuum limiter device for internal combustion engine, in particular of a motor vehicle.

Elle se rapporte plus particulièrement à un dispositif de limiteur de dépression pour moteur à combustion interne permettant de réduire son encombrement sur un couvercle de la culasse du moteur.It relates more particularly to a device for limiting vacuum for internal combustion engine to reduce its size on a cover of the engine cylinder head.

De manière classique, les moteurs à combustion interne turbo-compressés ou suralimentés nécessitent l'agencement dans le circuit de ré-aspiration des gaz du carter, désigné généralement par le terme anglais « blowby », d'un limiteur de dépression permettant de supprimer tout risque de ré-aspiration de l'huile dans les conduits d'admission d'air.Conventionally, turbo-compressed internal combustion engines or supercharged require arrangement in the gas re-suction circuit of the housing, generally designated by the English term "blowby", of a depression to eliminate any risk of re-aspiration of the oil in the air intake ducts.

Un tel limiteur de dépression est généralement agencé sur l'un des couvercles de la culasse à proximité du bouchon de remplissage de l'huile et du piquage de recyclage des gaz de carter.Such a vacuum limiter is generally arranged on one of the cylinder head covers near the oil filler cap and nozzle for recycling crankcase gases.

On comprend qu'un tel agencement du limiteur de pression sur le couvercle de la culasse du moteur soit contraignant à implanter, l'espace disponible sur le couvercle de la culasse étant plutôt limité.It is understood that such an arrangement of the pressure relief valve on the engine cylinder head cover is constraining to install, space available on the cylinder head cover being rather limited.

Le but de l'invention est de proposer un dispositif de limiteur de dépression pour moteur à combustion interne qui puisse remédier à l'inconvénient mentionné ci-dessus.The object of the invention is to propose a vacuum limiter device for internal combustion engine which can remedy the mentioned drawback above.

A cet effet, la présente invention a pour objet un dispositif de limiteur de dépression pour moteur à combustion interne, notamment d'un véhicule automobile agencé sur un couvercle de culasse et comportant une membrane déformable mobile sous l'action de la dépression régnant dans le carter du moteur afin d'empêcher la ré-aspiration d'huile à l'admission en cas de forte dépression, le couvercle étant en outre muni d'une ouverture permettant l'introduction de l'huile dans le carter du moteur qui est destinée à être obstruée par un bouchon généralement désigné « bouchon de remplissage d'huile », caractérisé en ce que la membrane déformable mobile du limiteur de dépression est fixée au bouchon amovible de remplissage de l'huile et coopère lorsque le bouchon est agencé sur le couvercle avec une pièce mobile qui est agencée dans ledit couvercle de la culasse et apte à obstruer un canal d'évacuation des gaz réalisé sur le couvercle en fonction des déplacements de la membrane souple déformable. To this end, the present invention relates to a device for limiting vacuum for internal combustion engine, especially of a vehicle automobile arranged on a cylinder head cover and comprising a membrane mobile deformable under the action of the vacuum prevailing in the casing of the engine to prevent re-suction of oil at the intake in case of strong vacuum, the cover being further provided with an opening allowing the introduction of oil into the crankcase which is intended to be blocked by a plug generally designated as an "oil filling plug", characterized in that the movable deformable membrane of the vacuum limiter is attached to the removable oil filler cap and cooperates when the cap is arranged on the cover with a movable part which is arranged in said cylinder head cover and capable of obstructing a discharge channel for gas produced on the cover as a function of the displacements of the membrane flexible deformable.

Selon une caractéristique avantageuse de la présente invention, le canal d'évacuation des gaz est réalisé de fonderie avec le couvercle de la culasse.According to an advantageous characteristic of the present invention, the channel gas evacuation is carried out foundry with the cylinder head cover.

Selon une autre caractéristique avantageuse de la présente invention, le canal d'évacuation est saillant au droit de l'orifice de la culasse et est constitué d'un premier et d'un second conduit parallèles l'un à l'autre mis en communication par l'intermédiaire d'un perçage perpendiculaire auxdits conduits assurant en outre le logement de la pièce mobile qui présente la forme générale d'un U dont les extrémités libres des branches sont rabattues afin d'assurer une butée de ladite pièce lorsque le bouchon est enlevé du couvercle et en ce que cette pièce mobile est munie sur ses branches d'orifices agencés de manière à permettre en fonction de son déplacement soit la mise en communication des deux conduits soit l'obturation du premier conduit.According to another advantageous characteristic of the present invention, the evacuation channel protrudes to the right of the cylinder head orifice and is constituted a first and a second conduit parallel to each other set up communication via a hole perpendicular to said conduits further ensuring the housing of the moving part which has the general shape a U whose free ends of the branches are folded down to ensure a abutment of said part when the plug is removed from the cover and in that this moving part is provided on its branches with orifices arranged so as to allow, depending on its displacement, the communication of two conduits or the obturation of the first conduit.

Toujours selon l'invention, la pièce mobile est munie également d'un ressort de rappel agencé à l'intérieur de celle-ci qui prend appui par l'une de ses extrémités sur le fond de la pièce et par son extrémité opposée sur la face d'un bouchon de fermeture du perçage.Still according to the invention, the moving part is also provided with a return spring arranged inside thereof which is supported by one of its ends on the bottom of the piece and by its opposite end on the face of a hole closure plug.

Les caractéristiques de l'invention mentionnées ci-dessus, ainsi que d'autres, apparaítront plus clairement à la lecture de la description suivante d'un exemple de réalisation, en se référant aux dessins annexés sur lesquels :

  • la figure 1 est une vue en coupe transversale d'un couvercle de culasse équipé d'un dispositif de limiteur de pression suivant la présente invention, représenté en position inactive,
  • la figure 2 est similaire à la figure 1 dans laquelle le dispositif est représenté en position active, et
  • la figure 3 est une vue similaire à la figure 1, représentant le mode de remplissage en huile du carter du moteur.
The characteristics of the invention mentioned above, as well as others, will appear more clearly on reading the following description of an exemplary embodiment, with reference to the attached drawings in which:
  • FIG. 1 is a cross-sectional view of a cylinder head cover fitted with a pressure relief device according to the present invention, shown in the inactive position,
  • FIG. 2 is similar to FIG. 1 in which the device is shown in the active position, and
  • Figure 3 is a view similar to Figure 1, showing the method of filling the engine crankcase with oil.

On a représenté sur les figures 1 à 3, un couvercle de culasse 1 d'un moteur à combustion interne. Ce couvercle 1 est muni de manière classique d'une ouverture 2 permettant l'introduction de l'huile dans le carter du moteur qui est destinée à être obstruée par un bouchon 3 généralement désigné « bouchon de remplissage d'huile ». Ce couvercle 1 est également muni d'un dispositif de limiteur de dépression constitué de manière classique d'une membrane 4 souple déformable mobile sous l'action de la dépression régnant dans le carter du moteur afin d'empêcher la ré-aspiration d'huile à l'admission en cas de forte dépression.There is shown in Figures 1 to 3, a cylinder head cover 1 of a internal combustion engine. This cover 1 is provided in a conventional manner an opening 2 allowing the introduction of oil into the crankcase of the engine which is intended to be obstructed by a plug 3 generally designated "plug filling with oil ”. This cover 1 is also provided with a device for vacuum limiter conventionally constituted by a flexible membrane 4 mobile deformable under the action of the vacuum prevailing in the casing of the engine to prevent re-suction of oil at the intake in case of strong depression.

Selon la présente invention, la membrane 4 mobile du limiteur de dépression est fixée au bouchon 3 amovible de remplissage de l'huile et coopère lorsque le bouchon 3 est agencé sur le couvercle 1 avec une pièce mobile 5 qui est agencée dans ledit couvercle de la culasse et apte à obstruer un canal d'évacuation des gaz réalisé sur le couvercle.According to the present invention, the movable membrane 4 of the limiter vacuum is attached to the removable oil filling plug 3 and cooperates when the plug 3 is arranged on the cover 1 with a moving part 5 which is arranged in said cylinder head cover and able to obstruct a channel gas evacuation carried out on the cover.

Selon un mode de réalisation préférentiel, cette pièce mobile 5 notamment sous l'action de la membrane 4 est apte à être rappelée à sa position inactive, c'est-à-dire de libre passage des gaz au travers du canal d'évacuation par l'intermédiaire d'un ressort 6 disposé par exemple coaxialement à l'intérieur de la pièce mobile 5 comme expliqué plus en détail ci-après.According to a preferred embodiment, this movable part 5 in particular under the action of the membrane 4 is able to be recalled to its inactive position, that is to say free passage of gases through the discharge channel by through a spring 6 arranged for example coaxially inside the moving part 5 as explained in more detail below.

Le canal d'évacuation des gaz est réalisé de fonderie avec le couvercle 1 de la culasse. Ce canal est saillant au droit de l'orifice 2 de la culasse et est constitué par exemple d'un premier 7 et d'un second 8 conduit parallèles l'un à l'autre et mis en communication par l'intermédiaire d'un perçage 9 perpendiculaire auxdits conduits 7 et 8, comme illustré sur les figures 1 à 3.The gas evacuation channel is made of foundry with the cover 1 of the breech. This channel is protruding to the right of the orifice 2 of the cylinder head and is consisting for example of a first 7 and a second 8 leads parallel one to the other and put in communication via a hole 9 perpendicular to said conduits 7 and 8, as illustrated in Figures 1 to 3.

Ce perçage 9 assure en outre le logement de la pièce mobile 5 présentant la forme générale d'un U dont les extrémités libres des branches sont rabattues afin d'assurer une butée de ladite pièce lorsque le bouchon 3 est enlevé du couvercle. Cette pièce 5 est munie sur ses branches, d'orifices 10 agencées de manière à permettre en fonction de son déplacement soit la mise en communication des deux conduits 7 et 8 soit l'obturation du premier conduit 7.This hole 9 also provides housing for the moving part 5 having the general shape of a U whose free ends of the branches are folded down in order to ensure a stop for said part when the plug 3 is removed from the lid. This part 5 is provided on its branches with orifices 10 arranged so as to allow, depending on its displacement, either setting communication of the two conduits 7 and 8, i.e. the closure of the first conduit 7.

On notera que la pièce mobile 5 est munie également, comme décrit plus haut, d'un ressort de rappel 6 agencé par exemple à l'intérieur de celle-ci qui prend appui par l'une de ses extrémités sur le fond de la pièce 5 et par son extrémité opposée sur la face d'un bouchon de fermeture 11 du perçage 9.Note that the moving part 5 is also provided, as described more top, a return spring 6 arranged for example inside thereof which is supported by one of its ends on the bottom of the part 5 and by its opposite end on the face of a closure plug 11 of the bore 9.

Le fonctionnement du dispositif de limiteur de dépression de la présente invention ressort déjà de la description qui en a été faite ci-dessus et va être maintenant expliqué.The operation of the vacuum limiter device of the present invention already emerges from the description which has been made above and will be now explained.

Ainsi, lorsque l'utilisateur ou le mécanicien désire faire un apport d'huile dans le carter moteur, il enlève le bouchon 3 du couvercle 1, entraínant un déplacement de la pièce mobile 5 sous l'action du ressort de rappel 6 qui par voie de conséquence obstrue le premier conduit, comme visible à la figure 3. L'huile peut ainsi être engagée par l'orifice réalisé dans le couvercle jusqu'au carter du moteur.So when the user or the mechanic wants to add oil in the crankcase, it removes the plug 3 from the cover 1, causing a displacement of the moving part 5 under the action of the return spring 6 which by consequence path obstructs the first duct, as visible in Figure 3. The oil can thus be engaged through the hole made in the cover until motor housing.

L'engagement du bouchon 3 dans le couvercle 1, afin de fermer l'orifice de ce dernier, entraíne la coopération de la membrane 4 souple avec la pièce mobile 5 repoussant ainsi celle-ci de manière à mettre en communication les deux conduits 7 et 8 du canal d'évacuation des gaz, comme illustré à la figure 1.The engagement of the plug 3 in the cover 1, in order to close the orifice of the latter, causes the cooperation of the flexible membrane 4 with the part mobile 5 thus pushing it so as to put the two conduits 7 and 8 of the gas evacuation channel, as illustrated in FIG. 1.

En cas de dépression dans le carter du moteur, la membrane souple 4 est entraínée vers le carter (Flèche F) repoussant ainsi également la pièce mobile vers le carter ce qui par voie de conséquence obstrue le premier conduit 7 du fait de la non correspondance des orifices 10 de la pièce 5 avec le premier conduit 7, interdisant ainsi toute libération des gaz (figure 2).In the event of a vacuum in the motor housing, the flexible membrane 4 is driven towards the casing (Arrow F) thus also pushing the moving part towards the casing which consequently obstructs the first conduit 7 because non-correspondence of the orifices 10 of the part 5 with the first conduit 7, thus prohibiting any release of gases (Figure 2).

Dès que la pression à l'intérieur du carter augmente, la membrane 4 retrouve sa position (figure 1) autorisant ainsi l'évacuation des gaz.As soon as the pressure inside the housing increases, the diaphragm 4 regains its position (Figure 1) thus allowing the evacuation of gases.

On comprend à la lecture de la description ci-dessus que le dispositif de limiteur de dépression est relativement simple à réaliser et permet de réduire considérablement son encombrement sur un couvercle de culasse en regroupant deux fonctions distinctes à savoir limiteur de dépression et bouchon de remplissage en huile.It will be understood from reading the description above that the device for vacuum limiter is relatively simple to perform and reduces considerably its size on a cylinder head cover by grouping two distinct functions namely vacuum limiter and stopper filling with oil.

Bien que l'invention ait été décrite en liaison avec un mode de réalisation particulier elle comprend tous les équivalents techniques des moyens décrits.Although the invention has been described in connection with an embodiment particular it includes all the technical equivalents of the means described.

Claims (4)

Dispositif de limiteur de dépression pour moteur à combustion interne, notamment d'un véhicule automobile agencé sur un couvercle (1) de culasse et comportant une membrane (4) déformable mobile sous l'action de la dépression régnant dans le carter du moteur afin d'empêcher la ré-aspiration d'huile à l'admission en cas de forte dépression, le couvercle (1) étant en outre muni d'une ouverture (2) permettant l'introduction de l'huile dans le carter du moteur qui est destinée à être obstruée par un bouchon (3) généralement désigné « bouchon de remplissage d'huile », caractérisé en ce que la membrane (4) déformable mobile du limiteur de dépression est fixée au bouchon amovible (3) de remplissage de l'huile et coopère lorsque le bouchon (3) est agencé sur le couvercle (1) avec une pièce mobile (5) qui est agencée dans ledit couvercle (1) de la culasse et apte à obstruer un canal (7, 8, 9) d'évacuation des gaz réalisé sur le couvercle (1) en fonction des déplacements de la membrane souple déformable (4).Vacuum limiting device for an internal combustion engine, in particular of a motor vehicle arranged on a cylinder head cover (1) and comprising a deformable membrane (4) movable under the action of the vacuum prevailing in the engine casing in order to '' prevent re-suction of oil on admission in the event of a high vacuum, the cover (1) being further provided with an opening (2) allowing the introduction of oil into the crankcase of the engine which is intended to be obstructed by a plug (3) generally designated "oil filling plug", characterized in that the movable deformable membrane (4) of the vacuum limiter is fixed to the removable oil filling plug (3) and cooperates when the plug (3) is arranged on the cover (1) with a moving part (5) which is arranged in said cover (1) of the cylinder head and capable of obstructing a channel (7, 8, 9) of gas evacuation carried out on the cover (1) according to the de placement of the flexible deformable membrane (4). Dispositif de limiteur de dépression selon la revendication 1, caractérisé en ce que le canal (7, 8, 9) d'évacuation des gaz est réalisé de fonderie avec le couvercle (1) de la culasse.Vacuum limiter device according to claim 1, characterized in that the gas evacuation channel (7, 8, 9) is made of foundry with the cover (1) of the cylinder head. Dispositif de limiteur de dépression selon la revendication 1 ou 2, caractérisé en ce que le canal (7, 8, 9) d'évacuation est saillant au droit de l'orifice (2) de la culasse et est constitué d'un premier (7) et d'un second (8) conduit parallèles l'un à l'autre mis en communication par l'intermédiaire d'un perçage (9) perpendiculaire auxdits conduits (7, 8) assurant en outre le logement de la pièce mobile (5) qui présente la forme générale d'un U dont les extrémités libres des branches sont rabattues afin d'assurer une butée de ladite pièce (5) lorsque le bouchon (3) est enlevé du couvercle (1) et en ce que cette pièce (5) mobile est munie sur ses branches, d'orifices (10) agencés de manière à permettre en fonction de son déplacement soit la mise en communication des deux conduits (7 et 8) soit l'obturation du premier conduit (7).Vacuum limiter device according to claim 1 or 2, characterized in that the evacuation channel (7, 8, 9) protrudes in line with the orifice (2) of the cylinder head and consists of a first ( 7) and a second (8) conduit parallel to each other placed in communication by means of a bore (9) perpendicular to said conduits (7, 8) further ensuring the housing of the movable part (5) which has the general shape of a U whose free ends of the branches are folded down in order to ensure a stop for said piece (5) when the plug (3) is removed from the cover (1) and in that this moving part (5) is provided on its branches with orifices (10) arranged so as to allow, depending on its movement, either the communication of the two conduits (7 and 8) or the closure of the first conduit (7) . Dispositif de limiteur de dépression selon la revendication 4, caractérisé en ce que la pièce mobile (5) est munie également d'un ressort de rappel (6) agencé à l'intérieur de celle-ci qui prend appui par l'une de ses extrémités sur le fond de la pièce et par son extrémité opposée sur la face d'un bouchon (11) de fermeture du perçage (9).Vacuum limiter device according to claim 4, characterized in that the moving part (5) is also provided with a return spring (6) arranged inside of it which is supported by one of its ends on the bottom of the part and by its opposite end on the face of a plug (11) for closing the bore (9).
EP03292247A 2002-09-16 2003-09-12 Pressure relief valve for combustion engine , in particular for motor vehicle Expired - Lifetime EP1398468B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0211410A FR2844547B1 (en) 2002-09-16 2002-09-16 PRESSURE RELIEF DEVICE FOR AN INTERNAL COMBUSTION ENGINE, PARTICULARLY FOR A MOTOR VEHICLE
FR0211410 2002-09-16

Publications (2)

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EP1398468A1 true EP1398468A1 (en) 2004-03-17
EP1398468B1 EP1398468B1 (en) 2007-07-04

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EP03292247A Expired - Lifetime EP1398468B1 (en) 2002-09-16 2003-09-12 Pressure relief valve for combustion engine , in particular for motor vehicle

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EP (1) EP1398468B1 (en)
AT (1) ATE366353T1 (en)
DE (1) DE60314698T2 (en)
FR (1) FR2844547B1 (en)

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FR2892763A1 (en) * 2005-10-28 2007-05-04 Mark Iv Systemes Moteurs Soc P Gas-oil separator for internal combustion engine of motor vehicle, has cap integrating conduit portion forming exhaust pipe for gas present in separator and membrane regulating exhaust of gas and pressure in separator
EP2236781A1 (en) * 2009-03-12 2010-10-06 Polytec Automotive GmbH & Co. KG Pressure control valve

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011106593B4 (en) 2010-07-06 2022-01-13 BRUSS Sealing Systems GmbH Housing for an internal combustion engine and a positive crankcase ventilation PCV valve attached to the housing, and a method of attaching a PCV valve to a housing
CN114151221B (en) * 2021-12-07 2023-08-08 青岛再特模具有限公司 Integrated press-fitting structure of engine cylinder head cover built-in PCV valve

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US5090393A (en) * 1990-07-11 1992-02-25 Filterwerk Mann & Hummel Gmbh Pressure regulating valve for installation in a vent duct of an internal combustion engine
DE4136894C1 (en) * 1991-11-09 1992-11-26 Mercedes-Benz Aktiengesellschaft, 7000 Stuttgart, De Crankcase gas extractor for vehicle IC-engine - has two working volumes separated by domed membrane with stiffened base
US5335641A (en) * 1992-04-18 1994-08-09 Filterwerk Mann & Hummel Gmbh Oil filler for an internal combustion engine
GB2288452A (en) * 1994-03-28 1995-10-18 Knecht Filterwerke Gmbh Ventilation valve

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5090393A (en) * 1990-07-11 1992-02-25 Filterwerk Mann & Hummel Gmbh Pressure regulating valve for installation in a vent duct of an internal combustion engine
DE4136894C1 (en) * 1991-11-09 1992-11-26 Mercedes-Benz Aktiengesellschaft, 7000 Stuttgart, De Crankcase gas extractor for vehicle IC-engine - has two working volumes separated by domed membrane with stiffened base
US5335641A (en) * 1992-04-18 1994-08-09 Filterwerk Mann & Hummel Gmbh Oil filler for an internal combustion engine
GB2288452A (en) * 1994-03-28 1995-10-18 Knecht Filterwerke Gmbh Ventilation valve

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2892763A1 (en) * 2005-10-28 2007-05-04 Mark Iv Systemes Moteurs Soc P Gas-oil separator for internal combustion engine of motor vehicle, has cap integrating conduit portion forming exhaust pipe for gas present in separator and membrane regulating exhaust of gas and pressure in separator
EP2236781A1 (en) * 2009-03-12 2010-10-06 Polytec Automotive GmbH & Co. KG Pressure control valve

Also Published As

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DE60314698D1 (en) 2007-08-16
DE60314698T2 (en) 2008-06-05
ATE366353T1 (en) 2007-07-15
FR2844547A1 (en) 2004-03-19
FR2844547B1 (en) 2004-10-22
EP1398468B1 (en) 2007-07-04

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