EP0978639B1 - Couvre culasse - Google Patents

Couvre culasse Download PDF

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Publication number
EP0978639B1
EP0978639B1 EP99107374A EP99107374A EP0978639B1 EP 0978639 B1 EP0978639 B1 EP 0978639B1 EP 99107374 A EP99107374 A EP 99107374A EP 99107374 A EP99107374 A EP 99107374A EP 0978639 B1 EP0978639 B1 EP 0978639B1
Authority
EP
European Patent Office
Prior art keywords
head cover
crankcase
cylinder
flow space
flow
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
EP99107374A
Other languages
German (de)
English (en)
Other versions
EP0978639A1 (fr
Inventor
Jens Dr. Hadler
Felix Haack
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.)
Volkswagen AG
Original Assignee
Volkswagen AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Volkswagen AG filed Critical Volkswagen AG
Publication of EP0978639A1 publication Critical patent/EP0978639A1/fr
Application granted granted Critical
Publication of EP0978639B1 publication Critical patent/EP0978639B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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

Definitions

  • the invention relates to a cylinder head cover for an internal combustion engine, in particular a gasoline or diesel engine, especially for a motor vehicle, with a Vent valve, a first side, a second opposite the first side Side and a blanket, the vent valve comprising the following Base frame and a lid, which together form a valve housing, wherein a membrane (24) is arranged in the valve housing and rests on a seat supports and the valve housing in a first chamber, which with a Air intake duct of the internal combustion engine is connected, and a second chamber, which via a flow channel with an interior of a to be vented Crankcase is connected, according to the preamble of claim 1.
  • a generic cylinder head cover is for example from DE 36 15 397 C2 known.
  • an exhaust air duct connects the room to be vented Crankcase with a chamber of the ventilation device.
  • the exhaust duct is as an opening in a common wall of the vent valve and Cylinder head cover executed.
  • a is in the venting device mechanical liquid separator provided.
  • Document EP 0 730 086 A1 relates to a cyclone separator for crankcase ventilation an internal combustion engine with a vent valve, the Cyclone separator as a horizontal spiral separation channel with von radially inward the same or decreasing cross sections and with in Ratio to the largest outer diameter of the cyclone part many times over lower channel height is formed. Both the cyclone separator and one Suction openings are arranged immediately adjacent to the vent valve.
  • Document DE 33 26 881 A1 relates to a crankcase ventilation for a Internal combustion engine, wherein the ventilation valve and the cylinder head cover completely or essentially form a structural unit.
  • the vent valve is an oil separator upstream, which consists of a substantially the length of the Cylinder head cover extending air duct, which is approximately in to the valve chamber half the hood height is tightly closed by a cover plate.
  • the entrance opening the exhaust gases are located away from the vent valve.
  • Document EP 0 744 535 A1 relates to an internal combustion engine with a Oil separation chamber in the cylinder head cover, the oil separation chamber Oil channels that run like a labyrinth and are closed by an oil separator plate has a discharge of oil separated from oil mist via the Allow cylinder crankcase in an oil reservoir.
  • the oil channels are in divided several sectors, so that through the openings in the space above the Oil separator plate entering oil and thus the oil selectively drains and thus the oil collection container can be fed.
  • Document US 4,721,090 relates to a crankcase ventilation for a Internal combustion engine, with a breathing chamber between the cylinder head cover and a baffle plate attached to the cylinder head cover is provided.
  • the Breathing chamber stands with the interior of the cylinder head and one Air intake unit in connection.
  • the respiratory chamber is divided into three sections, the are connected to each other via channels.
  • In the breathing chamber is in blow-by gases contained oil mist separated.
  • Document EP 0 591 737 A1 relates to a system for venting oil vapor from a Crankcase of an internal combustion engine.
  • This vertical holes are partly parallel to feed-through holes for Fastening bolt arranged and at least one vertical bore is with a Feedthrough holes connected.
  • Out of the cylinder head is an immediate one Connection to a ventilation opening provided on the cylinder head cover.
  • Document US 4 993 375 relates to a cylinder head cover, which on one long side a U-shaped blow-by gas channel with an oil separation main channel and on one opposite long side another U-shaped air duct with a Has oil separation subchannel. Ambient air is injected into the air duct Crankcase introduced to displace blow-by gases from the crankcase and to be discharged via the blow-by gas channel.
  • Document DE 197 32 367 A1 relates to a crankcase ventilation valve for a Internal combustion engine with a valve housing, one with the interior of the Crankcase connected gas inflow duct, one with an air intake duct Internal combustion engine connected gas discharge channel and a membrane, which the Splits valve housing into an inner chamber and an outer chamber on the crankcase side and has a breather valve plate, the membrane with the breather valve plate Depending on the pressure difference between the two chambers, the gas discharge channel is optional opens or closes.
  • the invention has for its object a cylinder head cover of the above Art to provide, with improved oil separation from the Escaping crankcase gases is achieved in a simple manner.
  • the flow channel includes: a first flow space, which on the first side of the cylinder head cover and in arranged gas-conducting connection with the second chamber, a second Flow space, which is on the second side of the cylinder head cover and in gas-conducting Connection is formed with the interior of the crankcase to be vented, and an overflow channel, which is on the ceiling of the cylinder head cover on the crankcase side is formed and the second flow space with the first flow space combines.
  • crankcase gases by an appropriate arrangement of the second flow space adapted to corresponding fluidic Conditions in the crankcase and removed from places in the crankcase where splashes a lot of oil, flexibly and optimizes regardless of where it is installed Venting device can be designed.
  • this is designed, for example, such that it extends over an entire longitudinal side of the Cylinder head cover extends.
  • the second flow space expediently has at least on the crankcase side a connecting wall with at least one through hole as a connection to the interior of the crankcase.
  • the second one points Flow space on the crankcase side at least one closed wall, which adjoins the connecting wall and extends beyond it into the Interior of the crankcase extends into it.
  • the second flow space is at one opposite the venting device and the first flow chamber one side of the cylinder head cover closest to the ventilation device, the overflow channel across a ceiling of the cylinder head cover the entire width of one side with the second flow space to the corresponding other side extends with the first flow space.
  • Cylinder head cover 10 according to the invention comprises a ventilation device 12, a first side 14, a second side 16 opposite the first side 14 and one Blanket 18. Adjacent to and near first side 14 is vent 12 arranged, which comprises the following, a base frame 20 and a cover 22, which together form a valve housing 20, 22.
  • a membrane 24 is arranged, which is supported on a seat 26 and the Valve housing 20, 24 in two chambers 28 and 30, namely a lower chamber 28 and an upper chamber 30.
  • the lower chamber 28 is arranged on the crankcase side and the upper chamber 30 is opposite on a side facing away from the crankcase Side of the valve housing 20, 22 formed.
  • the seat 26 of the membrane 24 and the base frame 20 of the valve housing 20, 22 are formed integrally with the cylinder head cover 10. It is also a gas outflow channel 32 with a connector 34 for connection to an air intake duct, not shown the internal combustion engine provided. This gas discharge channel 32 cannot in one Alternative embodiment shown can also be formed on the cover 22.
  • the upper chamber 30 with the air intake duct Internal combustion engine connected. So 30 get into the upper chamber Crankcase gases are returned to the combustion process of the internal combustion engine and do not escape into the environment.
  • a vent valve plate 36 is arranged in such a way that when the membrane 24 moves back and forth either opens or closes the gas discharge channel 32.
  • the venting device 12 or its upper chamber 30 is via a Flow channel connected to an interior of the crankcase to be vented, the flow channel according to the invention from the following components composed.
  • the first flow space 38 is on the first side 14 in gas-conducting connection with the ventilation device 12 and from the device to be vented Interior of the crankcase trained completed.
  • the second flow space 42 is a full length of the second side 16 with a first wall 44 and one second wall 46 is formed.
  • the first wall 44 is provided with openings 48, which is a gas-conducting connection between the second flow space 42 and the provide the interior of the crankcase to be vented. Through this Openings 48 enter crankcase gases from the interior of the crankcase the second flow space 42.
  • the overflow channel 40 is on the ceiling 18 of the cylinder head cover 10 formed on the crankcase side and connects the second flow chamber 42 with the first flow space 38.
  • This Overflow channel 40 there are low flow speeds, so that a entrainment of oil droplets as the crankcase gases pass through the second Flow space 42 via the overflow channel 40 into the first flow space 38 is avoided.
  • the second flow space 42 is the Venting device 12 arranged opposite the second side 16, so that the Openings 48 least of those working through under the cylinder head cover 10, Valves, not shown, are sprayed with oil.
  • the wall 46 of the second flow space 42 is above the wall 44 towards the crankcase to form an additional splash guard extended.

Landscapes

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

Claims (6)

  1. Couvre-culasse pour un moteur à combustion interne, en particulier pour moteur diesel ou pour moteur à allumage par étincelle, en particulier pour un véhicule automobile, comprenant une soupape de purge (12), une première face (14), une seconde face (16) antagoniste à la première face (14) ainsi qu'une enveloppe (18), du type selon lequel la soupape de purge (12) comporte les éléments suivants, à savoir un bâti d'ensemble (20) et un chapeau (22), qui constituent ensemble une chapelle de soupape (20, 22), du type selon lequel dans la chapelle de soupape (20, 22) est disposée une membrane (24) qui vient en appui sur un siège (26) et selon lequel la chapelle de soupape (20, 22) se subdivise en une première chambre (28) qui est reliée à un canal d'aspiration d'air du moteur à combustion interne, et en une seconde chambre (30) qui est reliée par le biais d'un canal d'écoulement à un espace intérieur à purger d'un carter de vilebrequin, caractérisé en ce que le canal d'écoulement comporte les éléments suivants, à savoir un premier espace d'écoulement (38) qui est disposé le long de la première face longitudinale (14) du couvre-culasse (10), voisine de la soupape de purge (12), s'étendant le long de la série de cylindres et communiquant par canalisation de gaz avec la seconde chambre (30), un second espace d'écoulement (42) qui est configuré le long de la seconde face longitudinale (16) du couvre-culasse (10), antagoniste à la première face longitudinale (14) et communiquant par canalisation de gaz avec l'espace intérieur à purger du carter de vilebrequin, ainsi qu'un canal de décharge (40) qui est configuré, côté carter de vilebrequin, le long de l'enveloppe (18) du couvre-culasse (10) et qui met en communication le second espace d'écoulement (42) avec le premier espace d'écoulement (38).
  2. Couvre-culasse selon la revendication 1, caractérisé en ce que le canal de décharge (40) est configuré de telle sorte que celui-ci présente, lors de la mise en service du moteur à combustion interne, un renflement en particulier en forme d'arc, antagoniste à la direction de la pesanteur.
  3. Couvre-culasse selon l'une des revendications précédentes, caractérisé en ce que le second espace d'écoulement (42) est configuré en s'étendant au-dessus de l'ensemble d'une face longitudinale (16) du couvre-culasse (10).
  4. Couvre-culasse selon l'une des revendications précédentes, caractérisé en ce que le second espace d'écoulement (42) présente, côté carter de vilebrequin, au moins une paroi de liaison (44) avec au moins une ouverture (48) prévue en tant que communication vers l'espace intérieur à purger du carter de vilebrequin.
  5. Couvre-culasse selon la revendication 4, caractérisé en ce que le second espace d'écoulement (42) présente, côté carter de vilebrequin, au moins une paroi fermée (46) qui est adjacente à la paroi de liaison (44) et s'étend au-dessus de celle-ci dans l'espace intérieur du carter de vilebrequin.
  6. Couvre-culasse selon l'une des revendications précédentes, caractérisé en ce que le canal de décharge (40) s'étend transversalement au-dessus de l'enveloppe (18) du couvre-culasse (10), au-dessus de la largeur totale de celui-ci, à partir de l'une des faces (16) associée au second espace d'écoulement (42) j usqu' à l'autre face (14) correspondante associée au premier espace d'écoulement (38).
EP99107374A 1998-08-06 1999-04-22 Couvre culasse Expired - Lifetime EP0978639B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19835564A DE19835564A1 (de) 1998-08-06 1998-08-06 Zylinderkopfhaube
DE19835564 1998-08-06

Publications (2)

Publication Number Publication Date
EP0978639A1 EP0978639A1 (fr) 2000-02-09
EP0978639B1 true EP0978639B1 (fr) 2004-10-13

Family

ID=7876673

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99107374A Expired - Lifetime EP0978639B1 (fr) 1998-08-06 1999-04-22 Couvre culasse

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EP (1) EP0978639B1 (fr)
DE (2) DE19835564A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2826691B1 (fr) * 2001-07-02 2003-09-26 Solvay Circuit de reaspiration des gaz de carter d'un moteur a combustion interne
DE102006019880A1 (de) * 2006-04-28 2007-10-31 Audi Ag Motorgehäusedeckel eines Verbrennungsmotors mit Entlüftungssystem
US10151225B2 (en) * 2016-10-26 2018-12-11 GM Global Technology Operations LLC Integrated oil separator assembly for crankcase ventilation

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3326881A1 (de) * 1983-07-26 1984-05-24 Daimler-Benz Ag, 7000 Stuttgart Kurbelgehaeuseentlueftung fuer eine brennkraftmaschine
EP0730086A1 (fr) * 1995-03-01 1996-09-04 Knecht Filterwerke Gmbh Séparateur cyclone pour la ventilation de carter d'un moteur à combustion interne avec une soupape de ventilation

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3615397C2 (de) 1985-05-18 1995-03-09 Volkswagen Ag Entlüftungsvorrichtung für einen teilweise mit einer Flüssigkeit gefüllten Raum
JPS61277814A (ja) * 1985-06-03 1986-12-08 Honda Motor Co Ltd ブロ−バイガス環元装置
DE3625836A1 (de) * 1986-07-30 1988-02-11 Audi Ag Vorrichtung zur entlueftung des kurbelraumes einer brennkraftmaschine
JPH0799087B2 (ja) * 1989-06-19 1995-10-25 日産自動車株式会社 内燃機関のシリンダヘッドカバー
DE4128453B4 (de) * 1991-08-28 2005-08-11 Deutz Ag Kurbelgehäuseentlüftung
IT1257120B (it) * 1992-10-09 1996-01-05 Fiat Auto Spa Sistema di sfiato dei vapori di olio dal carter di motori a combustione interna.
EP0744535B1 (fr) * 1995-05-22 1999-01-27 Dr.Ing.h.c. F. Porsche Aktiengesellschaft Moteur à combustion interne avec volume de séparation d'huile
DE19732367A1 (de) * 1997-07-28 1999-02-04 Volkswagen Ag Kurbelgehäuse-Entlüftungsventil für eine Brennkraftmaschine

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3326881A1 (de) * 1983-07-26 1984-05-24 Daimler-Benz Ag, 7000 Stuttgart Kurbelgehaeuseentlueftung fuer eine brennkraftmaschine
EP0730086A1 (fr) * 1995-03-01 1996-09-04 Knecht Filterwerke Gmbh Séparateur cyclone pour la ventilation de carter d'un moteur à combustion interne avec une soupape de ventilation

Also Published As

Publication number Publication date
DE59910806D1 (de) 2004-11-18
EP0978639A1 (fr) 2000-02-09
DE19835564A1 (de) 2000-02-10

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