EP0432012B1 - Cylinder head cover with integrated air filter - Google Patents

Cylinder head cover with integrated air filter Download PDF

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Publication number
EP0432012B1
EP0432012B1 EP90403341A EP90403341A EP0432012B1 EP 0432012 B1 EP0432012 B1 EP 0432012B1 EP 90403341 A EP90403341 A EP 90403341A EP 90403341 A EP90403341 A EP 90403341A EP 0432012 B1 EP0432012 B1 EP 0432012B1
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EP
European Patent Office
Prior art keywords
cylinder head
head cover
chamber
engine
air filter
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.)
Expired - Lifetime
Application number
EP90403341A
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German (de)
French (fr)
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EP0432012A1 (en
Inventor
Christian Roudeix
Eric Arnoult
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.)
Automobiles Peugeot SA
Automobiles Citroen SA
Original Assignee
Automobiles Peugeot SA
Automobiles Citroen SA
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Publication date
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Publication of EP0432012A1 publication Critical patent/EP0432012A1/en
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Publication of EP0432012B1 publication Critical patent/EP0432012B1/en
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
    • 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
    • F01M11/03—Mounting or connecting of lubricant purifying means relative to the machine or engine; Details of lubricant purifying means
    • 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
    • F02F7/0065—Shape of casings for other machine parts and purposes, e.g. utilisation purposes, safety
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
    • F02M35/02—Air cleaners
    • F02M35/04—Air cleaners specially arranged with respect to engine, to intake system or specially adapted to vehicle; Mounting thereon ; Combinations with other devices
    • 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 
    • F02F1/02—Cylinders; Cylinder heads  having cooling means
    • F02F1/10—Cylinders; Cylinder heads  having cooling means for liquid cooling
    • F02F2001/104—Cylinders; Cylinder heads  having cooling means for liquid cooling using an open deck, i.e. the water jacket is open at the block top face

Definitions

  • the present invention generally relates to a cylinder head cover for an internal combustion engine and more particularly to such a cylinder head cover equipped in particular with an air filter and a decanter for oil from the crankcase gases.
  • DE-A-2 317 246 discloses a molded cylinder head cover for an internal combustion engine, and of the type comprising an air filter connected to the engine intake system, and a settling chamber which communicates with '' on the one hand with the engine crankcase and on the other hand with the intake system so as to suck up the crankcase gases separated from the oil particles, the air filter and the settling chamber being integrated by molding into the cover cylinder head, said settling chamber being located laterally to the air filter and comprising at least two nozzles integrated by molding and making it possible to connect this chamber to the casing as well as to the intake system using two communication conduits.
  • the present invention aims to overcome the above drawbacks, by providing a cylinder head cover in which the settling chamber comprises a cylindrical settling well, the lower end of which opens into the cylinder head and the upper end of which opens outside the cylinder head cover, said well being integrated by molding into the cylinder head cover and extending concentrically from the bottom to the top of the central part of the settling chamber, thus forming an oil filling pipe.
  • the air filter comprises a chamber integrated by molding into the cylinder head cover, intended for the reception of a filter cartridge, the chamber being extended by a chamber for mixing fresh air and hot air also integrated into the cylinder head cover by molding.
  • the air filter may also include a cover portion, removably attached to the cylinder head cover so as to access the filter cartridge and comprising a connection channel between the settling chamber and the intake circuit so as to suck the gases from the settling chamber.
  • the air filter chamber, as well as the aforementioned cover are arranged laterally to the settling chamber.
  • the cylinder head cover comprises external ribs forming a groove integrally molded with the cylinder head cover and intended for fixing the electrical wires of the spark plugs of the engine.
  • the cylinder head cover according to the invention is fixed to the upper part of the bearing caps of at least one camshaft of the engine.
  • the cylinder head cover is made of a plastic material.
  • the latter is advantageously compact, aesthetic and has improved acoustics, thanks to the filtering of distribution noises.
  • the molded cylinder head cover according to the invention comprises a body 1 serving as a cover in its lower part to the bearing caps of the camshaft (not shown).
  • the body 1 and the caps are assembled one on the other using, for example, fixing screws V.
  • the body 1 comprises several chambers which are distributed close to and contiguous with the lower part forming a cover.
  • the body 1 comprises in a lateral part a chamber 2, extending longitudinally to the axis XX ′ of the camshaft and into which fresh air is supplied by a front end piece 3, integral with the outer wall 2a delimiting the chamber 2, connected to a fresh air intake hose (not shown) connected to an engine air intake (not shown), for example, using a hose clamp.
  • a fresh air intake hose not shown
  • an engine air intake not shown
  • a hose clamp In a lower part of the chamber 2 is formed another end piece 4 intended to be connected to a supply line (not shown) of hot air.
  • This chamber 2 thus connected to the air intake and to an air heating part, connected to the exhaust manifold, makes it possible to obtain a mixture of fresh air and air heated by said collector.
  • the chamber 2 is located under and adjoins another prismatic chamber 5 which communicates with it by a gas passage (not shown) such as for example an orifice in a common partition separating the two chambers 2 and 5.
  • a cartridge 6 for filtering the fresh air / hot air mixture is removably attached to a lateral face 5a delimiting the chamber 5 approximately comprised in a plane parallel to the vertical plane passing through the axis X-X ′.
  • This lateral face 5a delimits with the lower wall 1a of the body 1 forming the bearing cover of the engine camshaft, a space for receiving a removable part forming the cover 7, allowing access to the filter cartridge 6.
  • This cover 7 is fixed to the body 1 by means of two elastic tabs 8 which snap onto protuberances or projections 9 formed, for example by molding, on the upper wall 5b of the chamber 5, and two fixing screws 10 screwing respectively into two bosses 11 secured to the wall 1a.
  • the cover 7 comprises, integral with a wall 13 and opposite the filter cartridge 6, a connection end piece 14 connected to a hose, fixed for example using a collar, for the passage of the mixture. fresh air / hot air filtered to the engine intake system (not shown).
  • the latter opens into the end piece 14 and communicates by its opposite end with an orifice 16 of the body 1 opening into a decantation chamber 18 of the body 1 to allow the suction of the crankcase gases with the filtered air when the engine is running at full load.
  • the decantation chamber 18 is located laterally to the cover 7 and to the chamber 5 and comprises, in its central part, a cylindrical well 19, extending from bottom to top in the decantation chamber 18 and concentrically thereto.
  • the well 19 thus forms an oil filling pipe which opens at its lower end into the cylinder head (not shown), and at its upper end out of the cylinder head cover.
  • the well 19 is closed at its upper end by a removable plug 20.
  • the well 19 is provided with a bolt shield grid (not shown).
  • the decantation chamber 18 is connected on the one hand with the engine casing by a hose D1 (symbolized in phantom) connecting to a radial end piece 21 of the decantation chamber 18 and on the other hand with the system of admission by another hose D2 (also symbolized in phantom) which is connected to a second radial nozzle 22 of the chamber 18 similar to the first nozzle 21.
  • hose D1 symbolized in phantom
  • another hose D2 also symbolized in phantom
  • This circuit allows the suction of engine crankcase gases, after the oil particles suspended in the gas coming from the crankcase have been separated from this gas by decantation on the walls of the chamber 18.
  • the air filter F, the settling chamber 18, and the part forming the cover of the bearing caps of the camshaft are connected in one piece by molding of the body 1.
  • external ribs 23 are formed on a wall of the lower part of the body 1 forming a cover for the camshaft bearing caps. These ribs 23 are integrally molded with the body 1 form combs intended to retain electrical wires of spark plugs of the engine.
  • a compact, simple and economical cylinder head cover was thus produced, making it possible to reduce the time necessary for its assembly and maintenance.

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

Description

La présente invention se rapporte en général à un couvre-culasse pour moteur à combustion interne et plus particulièrement à un tel couvre-culasse équipé notamment d'un filtre à air et d'un décanteur d'huile des gaz du carter.The present invention generally relates to a cylinder head cover for an internal combustion engine and more particularly to such a cylinder head cover equipped in particular with an air filter and a decanter for oil from the crankcase gases.

Elle vise également un véhicule automobile à moteur à combustion interne équipé d'un tel couvre-culasse.It also relates to a motor vehicle with an internal combustion engine equipped with such a cylinder head cover.

On connaît d'après DE-A-2 317 246, un couvre-culasse moulé pour un moteur à combustion interne, et du type comprenant un filtre à air relié au système d'admission du moteur, et une chambre de décantation qui communique d'une part avec le carter du moteur et d'autre part avec le système d'admission de façon à aspirer les gaz du carter séparés des particules d'huile, le filtre à air et la chambre de décantation étant intégrés par moulage au couvre-culasse, ladite chambre de décantation étant située latéralement au filtre à air et comprenant au moins deux embouts intégrés par moulage et permettant de raccorder cette chambre au carter ainsi qu'au système d'admission à l'aide de deux conduits de communication.DE-A-2 317 246 discloses a molded cylinder head cover for an internal combustion engine, and of the type comprising an air filter connected to the engine intake system, and a settling chamber which communicates with '' on the one hand with the engine crankcase and on the other hand with the intake system so as to suck up the crankcase gases separated from the oil particles, the air filter and the settling chamber being integrated by molding into the cover cylinder head, said settling chamber being located laterally to the air filter and comprising at least two nozzles integrated by molding and making it possible to connect this chamber to the casing as well as to the intake system using two communication conduits.

Toutefois, les couvre-culasse connus obligent à prévoir un accès supplémentaire pour le remplissage en huile du carter, ce qui augmente les coûts de production ainsi que la complexité du moteur.However, known cylinder head covers make it necessary to provide additional access for filling the crankcase with oil, which increases production costs as well as the complexity of the engine.

Aussi, la présente invention a pour but de pallier les inconvénients ci-dessus, en proposant un couvre-culasse dans lequel la chambre de décantation comprend un puits de décantation cylindrique, dont l'extrémité inférieure débouche dans la culasse et l'extrémité supérieure débouche hors du couvre-culasse, ledit puits étant intégré par moulage au couvre-culasse et s'étendant concentriquement de bas en haut de la partie centrale de la chambre de décantation, pour former ainsi une canalisation de remplissage d'huile.Also, the present invention aims to overcome the above drawbacks, by providing a cylinder head cover in which the settling chamber comprises a cylindrical settling well, the lower end of which opens into the cylinder head and the upper end of which opens outside the cylinder head cover, said well being integrated by molding into the cylinder head cover and extending concentrically from the bottom to the top of the central part of the settling chamber, thus forming an oil filling pipe.

Suivant un avantage de l'invention, le filtre à air comprend une chambre intégrée par moulage au couvre-culasse, destinée à la réception d'une cartouche de filtrage, la chambre étant prolongée par une chambre de mélange d'air frais et d'air chaud également intégrée par moulage au couvre-culasse.According to an advantage of the invention, the air filter comprises a chamber integrated by molding into the cylinder head cover, intended for the reception of a filter cartridge, the chamber being extended by a chamber for mixing fresh air and hot air also integrated into the cylinder head cover by molding.

En outre, le filtre à air peut également comprendre une partie formant capot, fixée amoviblement au couvre-culasse de façon à accéder à la cartouche de filtrage et comportant un canal de liaison entre la chambre de décantation et le circuit d'admission de façon à aspirer les gaz de la chambre de décantation.In addition, the air filter may also include a cover portion, removably attached to the cylinder head cover so as to access the filter cartridge and comprising a connection channel between the settling chamber and the intake circuit so as to suck the gases from the settling chamber.

Suivant un autre avantage de l'invention, la chambre au filtre à air, ainsi que le capot précités sont disposés latéralement à la chambre de décantation.According to another advantage of the invention, the air filter chamber, as well as the aforementioned cover are arranged laterally to the settling chamber.

D'autre part, le couvre-culasse comprend des nervures externes formant sillon intégralement moulées au couvre-culasse et destinées à la fixation des fils électriques de bougies d'allumage du moteur.On the other hand, the cylinder head cover comprises external ribs forming a groove integrally molded with the cylinder head cover and intended for fixing the electrical wires of the spark plugs of the engine.

De plus, le couvre-culasse conforme à l'invention est fixé à la partie supérieure des chapeaux de palier d'au moins un arbre à came du moteur.In addition, the cylinder head cover according to the invention is fixed to the upper part of the bearing caps of at least one camshaft of the engine.

Par ailleurs, le couvre-culasse est réalisé en une matière plastique.Furthermore, the cylinder head cover is made of a plastic material.

Ainsi, en équipant un moteur à combustion interne du couvre-culasse conforme à l'invention, celui-ci est avantageusement compact, esthétique et possède une acoustique améliorée, grâce au filtrage des bruits de distribution.Thus, by equipping an internal combustion engine with the cylinder head cover according to the invention, the latter is advantageously compact, aesthetic and has improved acoustics, thanks to the filtering of distribution noises.

Mais d'autres avantages de l'invention apparaîtront mieux dans la description détaillée qui suit et se réfère à la figure annexée unique illustrant, par une vue en perspective et partiellement éclatée, un couvre-culasse conforme à l'invention.But other advantages of the invention will appear better in the detailed description which follows and refers to the single appended figure illustrating, in a perspective view and partially exploded, a cylinder head cover according to the invention.

En se reportant à la figure unique, le couvre-culasse moulé selon l'invention comprend un corps 1 servant de couvercle dans sa partie inférieure aux chapeaux de paliers de l'arbre à cames (non représentés). Le corps 1 et les chapeaux sont assemblés l'un sur l'autre à l'aide, par exemple, de vis de fixation V.Referring to the single figure, the molded cylinder head cover according to the invention comprises a body 1 serving as a cover in its lower part to the bearing caps of the camshaft (not shown). The body 1 and the caps are assembled one on the other using, for example, fixing screws V.

Le corps 1 comprend plusieurs chambres qui sont réparties à proximité de la partie inférieure formant couvercle et contiguës à celle-ci.The body 1 comprises several chambers which are distributed close to and contiguous with the lower part forming a cover.

Selon un mode de réalisation préféré de l'invention, le corps 1 comprend dans une partie latérale une chambre 2, s'étendant longitudinalement à l'axe X-X′ de l'arbre à cames et dans laquelle est amené de l'air frais par un embout avant 3, solidaire de la paroi extérieure 2a de délimitation de la chambre 2, connecté à une durite d'amenée d'air frais (non représentée) raccordée à une prise d'air du moteur (non représentée), par exemple, à l'aide d'un collier de serrage. Dans une partie inférieure de la chambre 2 est formé un autre embout 4 destiné à être connecté à une conduite d'amenée (non représentée) d'air chaud. Cette chambre 2 ainsi reliée à la prise d'air et à une partie de réchauffement de l'air, connexe au collecteur d'échappement, permet d'obtenir un mélange d'air frais et d'air réchauffé par ledit collecteur. De plus, la chambre 2 est située sous et est attenante à une autre chambre prismatique 5 qui communique avec celle-ci par un passage de gaz (non représenté) tel que par exemple un orifice dans une cloison commune de séparation des deux chambres 2 et 5.According to a preferred embodiment of the invention, the body 1 comprises in a lateral part a chamber 2, extending longitudinally to the axis XX ′ of the camshaft and into which fresh air is supplied by a front end piece 3, integral with the outer wall 2a delimiting the chamber 2, connected to a fresh air intake hose (not shown) connected to an engine air intake (not shown), for example, using a hose clamp. In a lower part of the chamber 2 is formed another end piece 4 intended to be connected to a supply line (not shown) of hot air. This chamber 2 thus connected to the air intake and to an air heating part, connected to the exhaust manifold, makes it possible to obtain a mixture of fresh air and air heated by said collector. In addition, the chamber 2 is located under and adjoins another prismatic chamber 5 which communicates with it by a gas passage (not shown) such as for example an orifice in a common partition separating the two chambers 2 and 5.

Une cartouche 6 de filtrage du mélange air frais/air chaud est amoviblement fixée à une face latérale 5a de délimitation de la chambre 5 comprise approximativement dans un plan parallèle au plan vertical passant par l'axe X-X′.A cartridge 6 for filtering the fresh air / hot air mixture is removably attached to a lateral face 5a delimiting the chamber 5 approximately comprised in a plane parallel to the vertical plane passing through the axis X-X ′.

Cette face latérale 5a délimite avec la paroi inférieure 1a du corps 1 formant couvercle de paliers de l'arbre à cames du moteur, un espace de réception d'une pièce amovible formant capot 7, permettant l'accès à la cartouche de filtrage 6. Ce capot 7 est fixé au corps 1 à l'aide de deux languettes élastiques 8 s'encliquetant sur des excroissances ou saillies 9 formées, par exemple par moulage, sur la paroi supérieure 5b de la chambre 5, et de deux vis de fixation 10 se vissant respectivement dans deux bossages 11 solidaires de la paroi 1a.This lateral face 5a delimits with the lower wall 1a of the body 1 forming the bearing cover of the engine camshaft, a space for receiving a removable part forming the cover 7, allowing access to the filter cartridge 6. This cover 7 is fixed to the body 1 by means of two elastic tabs 8 which snap onto protuberances or projections 9 formed, for example by molding, on the upper wall 5b of the chamber 5, and two fixing screws 10 screwing respectively into two bosses 11 secured to the wall 1a.

De plus, le capot 7 comporte, solidaire d'une paroi 13 et opposé à la cartouche de filtrage 6, un embout de raccordement 14 relié à une durite, fixée par exemple à l'aide d'un collier, pour le passage du mélange air frais/air chaud filtré vers le système d'admission du moteur (non représenté).In addition, the cover 7 comprises, integral with a wall 13 and opposite the filter cartridge 6, a connection end piece 14 connected to a hose, fixed for example using a collar, for the passage of the mixture. fresh air / hot air filtered to the engine intake system (not shown).

Une canalisation 15, venue de moulage du capot 7 et symbolisée par un trait en pointillés, est formée dans la paroi 13. Celle-ci débouche dans l'embout 14 et communique par son extrémité opposée avec un orifice 16 du corps 1 débouchant dans une chambre de décantation 18 du corps 1 pour permettre l'aspiration des gaz de carter avec l'air filtré lorsque le moteur fonctionne à pleine charge.A pipe 15, coming from the molding of the cover 7 and symbolized by a dotted line, is formed in the wall 13. The latter opens into the end piece 14 and communicates by its opposite end with an orifice 16 of the body 1 opening into a decantation chamber 18 of the body 1 to allow the suction of the crankcase gases with the filtered air when the engine is running at full load.

On comprend aisément que les chambres 2 et 5 et l'espace délimité par le capot 7 communiquent entre eux de façon à former un filtre à air F.It is easily understood that the chambers 2 and 5 and the space delimited by the cover 7 communicate with each other so as to form an air filter F.

La chambre de décantation 18 est située latéralement au capot 7 et à la chambre 5 et comprend, dans sa partie centrale, un puits cylindrique 19, s'étendant de bas en haut dans la chambre de décantation 18 et concentriquement à celle-ci. Le puits 19 forme ainsi une canalisation de remplissage d'huile qui débouche à son extrémité inférieure dans la culasse (non représentée), et à son extrémité supérieure hors du couvre-culasse.The decantation chamber 18 is located laterally to the cover 7 and to the chamber 5 and comprises, in its central part, a cylindrical well 19, extending from bottom to top in the decantation chamber 18 and concentrically thereto. The well 19 thus forms an oil filling pipe which opens at its lower end into the cylinder head (not shown), and at its upper end out of the cylinder head cover.

Le puits 19 est obturé à son extrémité supérieure par un bouchon amovible 20. Afin d'éviter l'intrusion accidentelle d'objets tels que par exemple un écrou, le puits 19 est muni d'une grille pare-boulon (non représentée).The well 19 is closed at its upper end by a removable plug 20. In order to avoid accidental intrusion of objects such as, for example, a nut, the well 19 is provided with a bolt shield grid (not shown).

La chambre de décantation 18 est en liaison d'une part avec le carter du moteur par une durite D1 (symbolisée en trait mixte) se raccordant à un embout radial 21 de la chambre de décantation 18 et d'autre part avec le système d'admission par une autre durite D2 (également symbolisée en trait mixte) qui se raccorde à un deuxième embout radial 22 de la chambre 18 similaire au premier embout 21.The decantation chamber 18 is connected on the one hand with the engine casing by a hose D1 (symbolized in phantom) connecting to a radial end piece 21 of the decantation chamber 18 and on the other hand with the system of admission by another hose D2 (also symbolized in phantom) which is connected to a second radial nozzle 22 of the chamber 18 similar to the first nozzle 21.

Ce circuit permet l'aspiration des gaz de carter du moteur, après que les particules d'huile en suspension dans le gaz provenant du carter aient été séparées de ce gaz par décantation sur les parois de la chambre 18.This circuit allows the suction of engine crankcase gases, after the oil particles suspended in the gas coming from the crankcase have been separated from this gas by decantation on the walls of the chamber 18.

Le filtre à air F, la chambre de décantation 18, et la partie formant couvercle des chapeaux de paliers de l'arbre à cames sont reliés en une seule pièce par moulage du corps 1.The air filter F, the settling chamber 18, and the part forming the cover of the bearing caps of the camshaft are connected in one piece by molding of the body 1.

De plus, des nervures externes 23 sont formées sur une paroi de la partie inférieure du corps 1 formant couvercle des chapeaux de paliers d'arbre à cames. Ces nervures 23 sont intégralement moulées avec le corps 1 forment des peignes destinés à retenir des fils électriques de bougies d'allumage du moteur.In addition, external ribs 23 are formed on a wall of the lower part of the body 1 forming a cover for the camshaft bearing caps. These ribs 23 are integrally molded with the body 1 form combs intended to retain electrical wires of spark plugs of the engine.

Il est avantageux de réaliser tout le corps 1 équipé du filtre F et de la chambre 18 précités de façon à obtenir un ensemble en matière plastique en une seule pièce légère, simple et d'accès aisé.It is advantageous to make the entire body 1 equipped with the filter F and the chamber 18 above so as to obtain a plastic assembly in a single piece that is light, simple and easy to access.

Grâce à cette conception ne formant qu'un seul bloc lorsque le capot 7 est fixé sur le corps 1, on obtient un ensemble couvre-culasse-filtre à air débarrassé de nombreuses durites de raccordement ou des orifices de remplissage d'huile qui rendaient plus complexe et coûteux le bloc propulseur.Thanks to this design forming a single block when the cover 7 is fixed to the body 1, there is obtained an air cylinder head cover filter assembly free of numerous connection hoses or oil filling orifices which made it more complex and expensive the propellant block.

On a ainsi réalisé un couvre-culasse compact, simple et économique, permettant de réduire les temps nécessaires à son montage et à son entretien.A compact, simple and economical cylinder head cover was thus produced, making it possible to reduce the time necessary for its assembly and maintenance.

Claims (8)

  1. Moulded cylinder head cover for an internal combustion engine and of the type comprising an air filter (F) connected to the intake system of the engine and a settling chamber (18) which communicates on the one hand with the crankcase of the engine and on the other hand with the intake system, so as to suck up the gases of the crankcase separated from the oil particules, the air filter and the settling chamber (18) being integrated through casting into the cylinder head cover, of the said through settling chamber being located laterally of the air filter (F) and comprising at least two extensions (21, 22) integrated through casting and permitting to connect it to the crankcase and to the intake system with the assistance of two communication ducts (D1, D2), characterized in that the settling chamber comprises a cylindrical settling well (19) the lower end of which opens into the cylinder head and the upper end opens outside of the cylinder head cover, in that the well is integrated through moulding into the cylinder head cover and extends concentrically from bottom to top in the central part of the settling chamber (18), thus forming an oil filling pipe.
  2. Cylinder head cover according to claim 1,
    characterized in that the aforesaid air filter (F) comprises a chamber (5) integrated through casting into the cylinder head cover and adapted to receive a filtering cartridge (6), the said chamber (5) being extended by a chamber (2) for mixing fresh air and hot air and also integrated through moulding into the cylinder head cover.
  3. Cylinder head cover according to claim 2,
    characterized in that the aforesaid air filter (F) moreover comprises a hood-like part (7) removably secured to the cylinder head cover so as to give access to the filtering cartridge (6) and comprising a nipple (14) for connection to the intake system, into which opens a duct (15) provided in the hood-like part (7) and in communication with the settling chamber (18) so as to draw up the gases.
  4. Cylinder head cover according to claim 3,
    characterized in that the aforesaid chamber (5) and hood (7) are disposed laterally of the settling chamber.
  5. Cylinder head cover according to one of claims 1 to 4, characterized in that it comprises external ribs (23) forming grooves integrally cast with the cylinder head cover and adapted to the fastening of electric wires for ignition plugs of the engine.
  6. Cylinder head cover according to one of claims 1 to 5, characterized in that it is fastened to the upper portions of the caps of bearings of at least one camshaft of the engine.
  7. Cylinder head cover according to one of claims 1 to 6, characterized in that it is made from a plastics material.
  8. Automotive vehicle with an internal combustion engine, characterized in that the said engine is fitted with a cylinder head cover such as defined in claims 1 to 7.
EP90403341A 1989-12-04 1990-11-26 Cylinder head cover with integrated air filter Expired - Lifetime EP0432012B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8915990A FR2655383B1 (en) 1989-12-04 1989-12-04 CYLINDER COVER WITH INTEGRATED AIR FILTER.
FR8915990 1989-12-04

Publications (2)

Publication Number Publication Date
EP0432012A1 EP0432012A1 (en) 1991-06-12
EP0432012B1 true EP0432012B1 (en) 1993-03-17

Family

ID=9388114

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90403341A Expired - Lifetime EP0432012B1 (en) 1989-12-04 1990-11-26 Cylinder head cover with integrated air filter

Country Status (4)

Country Link
EP (1) EP0432012B1 (en)
DE (1) DE69001121T2 (en)
ES (1) ES2040088T3 (en)
FR (1) FR2655383B1 (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19722948A1 (en) * 1997-05-31 1999-02-11 Bosch Gmbh Robert Device for mounting on an internal combustion engine
BE1011453A3 (en) * 1997-09-15 1999-09-07 Solvay Air intake device for engine internal.
US6293268B1 (en) 1999-10-07 2001-09-25 Siemens Automotive, Inc. Positive crankcase ventilation system
DE60123350T2 (en) * 2000-08-25 2007-05-10 Daihatsu Motor Co., Ltd., Ikeda Cylinder head cover for a combustion engine
US6354283B1 (en) * 2000-08-29 2002-03-12 Fleetguard, Inc. Diesel engine modular crankcase ventilation filter
DE10242809B4 (en) * 2002-09-14 2013-11-07 Volkswagen Ag Internal combustion engine with vacuum reservoir
FR3026789B1 (en) * 2014-10-02 2016-11-04 Renault Sa INTERNAL COMBUSTION ENGINE HEAD COVER

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4401093A (en) * 1982-06-09 1983-08-30 Ford Motor Company Oil fill/air breather cap with integral oil separator

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2317246A1 (en) * 1973-04-06 1974-10-17 Audi Nsu Auto Union Ag VALVE COVER FOR COMBUSTION MACHINERY
US4300511A (en) * 1980-05-14 1981-11-17 Chrysler Corporation Multi-functional assembly
US4861359A (en) * 1989-02-10 1989-08-29 Allied-Signal Inc. Dual function air filter
DE3914759A1 (en) * 1989-05-05 1990-11-08 Mann & Hummel Filter FILLING OPENING FOR FILLING LUBRICANT OIL INTO AN INTERNAL COMBUSTION ENGINE

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4401093A (en) * 1982-06-09 1983-08-30 Ford Motor Company Oil fill/air breather cap with integral oil separator

Also Published As

Publication number Publication date
DE69001121D1 (en) 1993-04-22
ES2040088T3 (en) 1993-10-01
DE69001121T2 (en) 1993-10-07
FR2655383A1 (en) 1991-06-07
FR2655383B1 (en) 1994-05-13
EP0432012A1 (en) 1991-06-12

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