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 PDFInfo
- 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
- Authority
- EP
- European Patent Office
- Prior art keywords
- cover
- plug
- vacuum
- cylinder head
- oil
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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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
- 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.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
- Hybrid Electric Vehicles (AREA)
- Pressure Vessels And Lids Thereof (AREA)
- Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)
- Motor Or Generator Frames (AREA)
- Supercharger (AREA)
Abstract
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.
- 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
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
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
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
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
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
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
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
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
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
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)
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)
Publication Number | Publication Date |
---|---|
EP1398468A1 true EP1398468A1 (en) | 2004-03-17 |
EP1398468B1 EP1398468B1 (en) | 2007-07-04 |
Family
ID=31726057
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP03292247A Expired - Lifetime EP1398468B1 (en) | 2002-09-16 | 2003-09-12 | Pressure relief valve for combustion engine , in particular for motor vehicle |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP1398468B1 (en) |
AT (1) | ATE366353T1 (en) |
DE (1) | DE60314698T2 (en) |
FR (1) | FR2844547B1 (en) |
Cited By (2)
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 |
Families Citing this family (2)
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 |
Citations (4)
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 |
-
2002
- 2002-09-16 FR FR0211410A patent/FR2844547B1/en not_active Expired - Fee Related
-
2003
- 2003-09-12 DE DE60314698T patent/DE60314698T2/en not_active Expired - Fee Related
- 2003-09-12 EP EP03292247A patent/EP1398468B1/en not_active Expired - Lifetime
- 2003-09-12 AT AT03292247T patent/ATE366353T1/en not_active IP Right Cessation
Patent Citations (4)
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)
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
Publication number | Publication date |
---|---|
FR2844547A1 (en) | 2004-03-19 |
DE60314698T2 (en) | 2008-06-05 |
ATE366353T1 (en) | 2007-07-15 |
FR2844547B1 (en) | 2004-10-22 |
EP1398468B1 (en) | 2007-07-04 |
DE60314698D1 (en) | 2007-08-16 |
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