EP0602398B1 - Couvre culasse - Google Patents

Couvre culasse Download PDF

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Publication number
EP0602398B1
EP0602398B1 EP93118413A EP93118413A EP0602398B1 EP 0602398 B1 EP0602398 B1 EP 0602398B1 EP 93118413 A EP93118413 A EP 93118413A EP 93118413 A EP93118413 A EP 93118413A EP 0602398 B1 EP0602398 B1 EP 0602398B1
Authority
EP
European Patent Office
Prior art keywords
hood
partition
valve
forming
cylinder head
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
EP93118413A
Other languages
German (de)
English (en)
Other versions
EP0602398A1 (fr
Inventor
Stephan Dipl.-Ing. Bernd
Bernhard Dipl.-Ing. Feldmann
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.)
SKF Sealing Solutions GmbH
Original Assignee
CR Elastomere GmbH
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 CR Elastomere GmbH filed Critical CR Elastomere GmbH
Publication of EP0602398A1 publication Critical patent/EP0602398A1/fr
Application granted granted Critical
Publication of EP0602398B1 publication Critical patent/EP0602398B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • 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
    • 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
    • F02F11/00—Arrangements of sealings in combustion engines 
    • F02F11/002—Arrangements of sealings in combustion engines  involving cylinder heads
    • 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
    • F02F7/008—Sound insulation

Definitions

  • the invention relates to a double-walled or multi-walled valve cover for the cylinder head of an internal combustion engine with an outer cover and at least one chamber which forms a chamber with this outer cover and is also designed as a partition, both covers having an edge surface for receiving an elastic seal and having a plurality of openings for carrying out fasteners and / or additional bodies that are sealed by rubber elements, are provided.
  • Thin-walled metal or plastic covers are used to seal the valve train in the cylinder head in internal combustion engines. which are designed as a hood.
  • EP 0 208 460 A2 shows a valve cover which is screwed to the cylinder head in a fully decoupled manner via an elastic seal.
  • several openings are arranged, which serve on the one hand to carry out the fastening screws and on the other to carry out ventilation lines or as an oil filler opening. All openings must be sealed with rubber elements.
  • partitions are provided within the bonnet cover, which are located transversely in the Extend the cover and act as an oil splash wall.
  • blowby gas gas that is let through from the combustion chamber on the piston, which is referred to as blowby gas, and does not get unnecessarily mixed with oil from the crankcase chamber via the oil return channels between the cylinder head and the crankcase into the valve cover and from there to the intake area of the engine .
  • DE-A-29 19 038 shows a generic double-walled cover for a cylinder head of an internal combustion engine, in which the two walls of the cover made of sheet metal are shaped with approximately the same contours and are held at approximately the same distance from one another in the assembled state by spacers formed from soft elastomers and are sealed against the cylinder housing by a single, one-piece seal that is not interrupted by openings or the like with respect to the edge of the cylinder head.
  • the inner wall plate has a plurality of ventilation openings which have been created from the inside of the wall and which correspond to an air vent which is arranged in the middle of the outer wall plate, penetrating it and projecting into the interior between the two plates is.
  • An annular bead is embossed around the vent connection protruding into the space between the wall sheets.
  • oil and gas space are connected to one another, so that the aforementioned measures not only serve to dampen the noise emanating from the cylinder head, but also to separate the oil from the space above the cylinder head cover.
  • the invention has for its object to improve a double-walled or multi-walled valve cover so that a separation between the ventilation channel for blowby gas and oil return flow channel is generated.
  • the partition formed as a hood sealing the oil space from the gas space can be connected to the cylinder head and that the ventilation channel formed between the outside of the hood forming the partition and the inside of the outer hood of the valve cover for venting the crankshaft housing on the Contact surface to the cylinder head is provided with openings which are connected to the crankshaft housing via ventilation holes in the cylinder head.
  • the hood forming the partition is preferably connected to the elastic seal of the outer hood of the valve cover.
  • the ability to connect the hood forming the partition together with the elastic seal in the vulcanizing tool has proven to be advantageous, so the elastic seal and the hood forming the partition form an installation unit that can be easily connected to the outer hood of the valve cover by the elastic seal is pressed into the corresponding groove of the edge surface.
  • the elastic seal has rubber elements for carrying out fastening means which can be plugged into the openings of the outer hood of the valve cover by folding over.
  • the injection nozzles or spark plugs are inserted through openings in the valve cover and must be sealed with additional seals.
  • the hood forming the partition has openings which are provided with sealing bodies.
  • the hood forming the partition can be made of plastic or metal.
  • the outer hood 1 shown in FIG. 1 of the valve cover for cylinder heads in internal combustion engines is made of aluminum and serves to cover the cylinder head 2 having the valves (FIG. 2).
  • the outer hood 1 of the valve cover has an edge surface with openings 4 for the implementation of fastening screws 5.
  • openings 4 ' can also be provided for carrying out additional bodies in the form of spark plugs, injection nozzles (not shown) or also for receiving sealing caps 7.
  • Figure 2 shows the valve cover in the installed state in cross section.
  • the right and left half of the figures show different geometric shapes of a partition arranged in the interior of the outer hood 1, 1 'of the valve cover.
  • the partition is designed as a hood 8, 8 'and fastened to the cylinder head 2 by means of a seal 9, 9'.
  • a chamber remains between the outside of the hood 8, 8 'designed as a partition and the inside of the outer hood 1 of the valve cover, which acts as a ventilation duct 10, 10'.
  • the blowby gas flowing out of the crankshaft housing (not shown) reaches the ventilation duct 10, 10 'via ventilation bores 11 in the cylinder head 2.
  • the hood 8, 8 'designed as a partition seals the gas against the cylinder head 2 via the seal 9, 9'. Mixing with the oil from the oil space 12 is not possible.
  • openings 13, 14, 14 ' can be arranged in the hood 8, 8' formed as a partition, in which sealing bodies 15, 16, 17 extend. These are vulcanized or glued to the hood 8, 8 'forming the partition, depending on the hood material.
  • the hood 8, 8 'forming the partition can be made of plastic or metal, depending on the engine design.
  • FIG. 3 shows a possibility of connecting the hood 8 forming the partition wall to the outer hood 1.
  • the elastic seal 18 has rubber elements 19 which can be inserted into the openings 4 by folding over. Since the hood 8, 8 ′ forming the partition wall is connected to the elastic seal 18 and after folding over the seal 18 to the outer hood 1, only the screw 5 needs to be inserted through the opening of the rubber element 19, and all parts 1 , 5, 8 and 8 'are firmly connected.

Landscapes

  • 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)

Claims (7)

  1. Couvercle de capot de soupape à deux parois ou plus pour la tête de cylindre d'un moteur à combustion interne ayant un capot extérieur et au moins une paroi de séparation également réalisée sous la forme d'un capot formant avec ledit capot extérieur une cambre, les deux capots étant pourvus d'une surface de bord pour la réception d'une garniture d'étanchéité élastique ainsi que de plusieurs ouvertures pour le passage de moyens de fixation et/ou de corps additionnels, qui sont étanchéifiés par des éléments en caoutchouc, caractérisé en ce que la paroi de séparation (8, 8') réalisée sous la forme d'un capot et séparant de manière étanche la chambre d'huile de la chambre de gaz peut être reliée avec la tête de cylindre (2) et en ce que le canal de ventilation (10, 10') formé entre le côté extérieur du capot (8, 8') formant la paroi de séparation et le côté intérieur du capot extérieur (1, 1') du couvercle de capot de soupape est pourvu, pour la ventilation du boîtier de vilebrequin, d'ouvertures au niveau de la surface d'appui sur la tête de cylindre (2), lesdites ouvertures étant en liaison avec le boîtier de vilebrequin par l'intermédiaire d'alésage de ventilation (11) dans la tête de cylindre (2).
  2. Couvercle de capot de soupape selon la revendication 1, caractérisé en ce que le capot (8, 8') formant la paroi de séparation est relié avec la garniture d'étanchéité élastique (18, 18') du capot extérier (1, 1') du couvercle de capot de soupape.
  3. Couvercle de capot de soupape salon les revendications 1 et 2, caractérisé en ce que le capot (8, 8') formant la paroi de séparation est relié à la garniture d'étanchéité élastique (18, 18') par vulcanisation.
  4. Couvercle de capot de soupape selon les revendications 1 à 3, caractérisé en ce que la garniture d'étanchéité élastique (18) présente des éléments en caoutchouc (19) pour le passage de moyens de fixation (5), qui sont enfichables par rabattement dans les ouvertures du capot extérieur (1) du couvercle de capot de soupape.
  5. Couvercle de capot de soupape selon les revendications 1 à 4, caractérisé en ce que le capot extérieur (1, 1') du couvercle de capot de soupape et le capot (8, 8') formant la paroi de séparation peuvent être reliés ensemble par les éléments en caoutchouc (19).
  6. Couvercle de capot de soupape selon les revendications 1 à 5, caractérié en ce que le capot (8, 8') formant la paroi de séparation est réalisé en matière synthétique.
  7. Couvercle de capot de soupape selon les revendications 1 à 5, caractérisé en ce que le capot (8, 8') formant la paroi de séparation est réalisé en métal.
EP93118413A 1992-12-15 1993-11-13 Couvre culasse Expired - Lifetime EP0602398B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4242265 1992-12-15
DE4242265A DE4242265C1 (de) 1992-12-15 1992-12-15 Ventilhaubendeckel

Publications (2)

Publication Number Publication Date
EP0602398A1 EP0602398A1 (fr) 1994-06-22
EP0602398B1 true EP0602398B1 (fr) 1997-01-15

Family

ID=6475312

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93118413A Expired - Lifetime EP0602398B1 (fr) 1992-12-15 1993-11-13 Couvre culasse

Country Status (3)

Country Link
EP (1) EP0602398B1 (fr)
DE (2) DE4242265C1 (fr)
ES (1) ES2096184T3 (fr)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4321514A1 (de) * 1993-06-29 1995-01-12 Goetze Ag Abdichtung zweier Gehäuseteile
DE19738275B4 (de) * 1997-09-02 2006-02-23 Cr Elastomere Gmbh Dichtung für Deckel von Brennkraftmaschinen
DE19738276C1 (de) * 1997-09-02 1998-10-29 Cr Elastomere Gmbh Mit Schallschutzhaube verbundene Zylinderkopfhaube
DE19743678B4 (de) * 1997-10-02 2010-02-18 Iav Gmbh Ingenieurgesellschaft Auto Und Verkehr Zylinderkopfhaube für Verbrennungsmotoren
DE19854542C1 (de) 1998-11-26 2000-04-13 Daimler Chrysler Ag Vorrichtung zur Kontaktierung eines Motorsteuergerätes
DE10208233B4 (de) * 2002-02-26 2004-09-02 Federal-Mogul Sealing Systems Bretten Gmbh & Co. Kg Statisches Abdichtelement für akustisch entkoppelte Anbauteile
DE102004030203B4 (de) * 2004-06-22 2010-01-07 Federal-Mogul Sealing Systems Bretten Gmbh Dichtung
DE102006039355A1 (de) * 2006-08-22 2008-03-13 Reinz-Dichtungs-Gmbh Zylinderkopfhaube
CN105756803B (zh) * 2016-04-27 2018-07-31 江苏四达动力机械集团有限公司 喷油器安装密封装置
DE102018132444B4 (de) * 2018-12-17 2024-01-04 Man Truck & Bus Se Vorrichtung zur Zuführung von Gaskraftstoff zu einer Verbrennungskammer einer Brennkraftmaschine
DE102019000498A1 (de) * 2019-01-23 2020-07-23 Deutz Aktiengesellschaft Zylinderkopf
CN112197103B (zh) * 2020-09-29 2022-07-08 中国航发湖南动力机械研究所 高速飞轮壳体结构

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0448431A1 (fr) * 1990-03-22 1991-09-25 Automobiles Peugeot Dispositif d'admission et de déshuilage des gaz dans un moteur à combustion interne et moteur équipé de ce dispositif
EP0516879A1 (fr) * 1991-06-06 1992-12-09 Mercedes-Benz Ag Moteur à combustion interne avec collecteur d'admission pour aspiration d'air frais

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5823492B2 (ja) * 1977-11-17 1983-05-16 日産自動車株式会社 自動車用低騒音エンジン
DE2919038A1 (de) * 1979-05-11 1980-11-20 Daimler Benz Ag Abdeckhaube fuer einen zylinderkopf eines verbrennungsmotors
US4593659A (en) * 1985-06-28 1986-06-10 Cummins Engine Company, Inc. Engine valve cover

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0448431A1 (fr) * 1990-03-22 1991-09-25 Automobiles Peugeot Dispositif d'admission et de déshuilage des gaz dans un moteur à combustion interne et moteur équipé de ce dispositif
EP0516879A1 (fr) * 1991-06-06 1992-12-09 Mercedes-Benz Ag Moteur à combustion interne avec collecteur d'admission pour aspiration d'air frais

Also Published As

Publication number Publication date
ES2096184T3 (es) 1997-03-01
EP0602398A1 (fr) 1994-06-22
DE4242265C1 (de) 1994-08-18
DE59305145D1 (de) 1997-02-27

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