EP1288475B1 - Couvercle avec un dispositif pour rendre sûr des forces d'étanchéité - Google Patents

Couvercle avec un dispositif pour rendre sûr des forces d'étanchéité Download PDF

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Publication number
EP1288475B1
EP1288475B1 EP02016594A EP02016594A EP1288475B1 EP 1288475 B1 EP1288475 B1 EP 1288475B1 EP 02016594 A EP02016594 A EP 02016594A EP 02016594 A EP02016594 A EP 02016594A EP 1288475 B1 EP1288475 B1 EP 1288475B1
Authority
EP
European Patent Office
Prior art keywords
housing cover
extension
edge
engine block
cover
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
EP02016594A
Other languages
German (de)
English (en)
Other versions
EP1288475A2 (fr
EP1288475A3 (fr
Inventor
Ralf Salameh
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.)
Federal Mogul Sealing Systems Bretten GmbH
Original Assignee
Federal Mogul Sealing Systems GmbH
Federal Mogul Sealing Systems Bretten 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 Federal Mogul Sealing Systems GmbH, Federal Mogul Sealing Systems Bretten GmbH filed Critical Federal Mogul Sealing Systems GmbH
Publication of EP1288475A2 publication Critical patent/EP1288475A2/fr
Publication of EP1288475A3 publication Critical patent/EP1288475A3/fr
Application granted granted Critical
Publication of EP1288475B1 publication Critical patent/EP1288475B1/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
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B77/00—Component parts, details or accessories, not otherwise provided for
    • F02B77/11—Thermal or acoustic insulation
    • F02B77/13—Acoustic insulation
    • 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

Definitions

  • the invention describes a housing cover for an internal combustion engine, in particular cylinder head covers or oil pans, for releasable, liquid-tight attachment to the engine block, with an elastomeric seal on the edge of the housing cover wherein on the edge of the housing cover on the inside a directed towards the engine block axial extension is provided, the axially over protrudes the sealing surface, so that the housing cover is positioned at least correct position.
  • housing cover such as cylinder head covers or oil pans
  • housing cover such as cylinder head covers or oil pans
  • they must have several features as detachable, liquid-tight engine parts and meet specific characteristics.
  • a detachable connection housing cover must, among other things, be easy to assemble and position and consist of as few individual parts.
  • the gasket in a housing cover must, inter alia, have a high dimensional fidelity or low relaxation, a high reusability and a good resistance to liquids in the engine and environmental influences.
  • a housing cover as a valve cover for a cylinder head of an internal combustion engine proposed in which by the use of a metallic spring body, the biasing force can be adjusted to the seal.
  • the seal is pressed on the cover edge, during tightening with a certain force on the engine block.
  • the metallic spring body By using the metallic spring body, the valve cover is able to follow the relaxation of the seal.
  • a disadvantage of this type of construction of a housing cover is that although the force on the seal can be kept relatively constant, a sliding movement of the lid edges on the sealing surface but nothing prevents it. Sliding movements of the lid edge can z. B. caused by fatigue of the housing cover material or excessive tightening torques of the cover screws.
  • JP 63 083464 A or JP 06221441 A as well as the US-A-4164927 disclose generic housing cover for internal combustion engines. In the radial direction, the individual housing cover are well stirred in the axial direction but safe and good positioning during assembly is not guaranteed.
  • the object of the invention is thus to develop a housing cover which counteracts the sliding movements of the lid edge and at the same time includes an assembly aid.
  • the inventive axial extension of the housing cover sliding movements of the lid edge are no longer possible. Rather, it can be done a targeted positioning of the lid on the sealing surface of the engine block.
  • This targeted positioning offers the advantage that the sealing surface on the engine block can be adapted exactly to the shape of the elastomeric sealing material. This in turn leads to material savings on the sealing surface, which in turn has a positive effect on the weight of the engine.
  • Another advantage is that the extension of the housing cover a targeted and defined introduction of force in the elastomeric sealing material is possible, it follows that the voltages occurring can be reliably calculated and adjusted.
  • the extension supports the assembly, so it serves during assembly as a joining aid and during the attachment for positioning of the housing cover.
  • extension according to the invention is designed so that it already clamps the housing cover during joining so overhead mounting, as can occur, for example, on oil pans, can be substantially facilitated.
  • the extension on the edge of the lid is arranged circumferentially on the edge of the lid in a patented embodiment. Depending on the application and structural conditions, the extension on the edge of the lid may also be only partially formed.
  • the partial training offers the advantage of less weight and the circumferential training the advantage of safer leadership.
  • the extension projects beyond the sealing surface in the direction of the engine block and according to the invention forms an undercut relative to the engine block. According to the invention, partial as well as circumferential undercuts are conceivable.
  • the housing cover is detachable and must be designed in such a way that an expansion of the housing cover without damaging the extension must be possible.
  • curves at the ends of the extension serve to facilitate the joining of the housing cover.
  • the slope extends from the inside of the housing cover in the direction of the outside.
  • the undercut in the form of a bevel offers the advantage that when the cover edge is displaced, the housing cover is pulled in the direction of the sealing surface, at the same time increasing the sealing force. Using this advantage, the effect between sliding movement and construction of the sealing forces can be specifically influenced. Furthermore, the undercut in the form of a slope offers the possibility to bring a bias to the seal of the housing cover, so that a very accurate positioning takes place already in the joining phase, which in turn can have a positive effect on automated fastening methods.
  • the handling of the housing cover in the automation of assembly processes is thus greatly facilitated.
  • an additional sealing function can be generated in the production of the extension of the lid edge.
  • a decisive advantage for example, if the fastening screws were insufficiently tightened and the risk of leakage arises.
  • a lighter joining of the housing cover can also be made possible according to the invention. So it is conceivable on the engine block to arrange a chamfer, which allows the extension into the housing block engages.
  • the housing cover may consist of any materials, but according to the invention preferably but made of a plastic. The relaxation occurring in plastics and the associated sliding movements of the seals on the sealing surface are now avoided by the extension according to the invention.
  • FIG. 1 shows the section through a housing cover 1.
  • the housing cover 1 has a lid edge 2 in which the elastomeric seal 3 is arranged, wherein the elastomeric seal 3 rests on the sealing surface 4 of the engine block 5.
  • the housing cover 1 On the inside of the cover edge 6, the housing cover 1 has an extension 7, which projects beyond the sealing surface 4.
  • the extension 7 is formed in such a way that with respect to the engine block 5, an undercut 8 is formed.
  • the undercut 8 is shown in the form of a slope 9.
  • a section through a housing cover 10 with a lid edge 11, an elastomeric seal 12 and a motor block 13 is shown in FIG 2.
  • FIG. 3 shows the section through a housing cover 20 in which the engine block 21 of the extension 22 has been adapted correspondingly in terms of design.
  • a chamfer 23 is provided on the engine block 21, which facilitates the joining of the housing cover 20.
  • the chamfer 23 has a slope 24 in the direction of the housing cover 20 for joining and a slope 25 in the direction of the engine block 21 for disassembly of the housing cover.
  • the chamfer 23 can also serve to limit the deformation of the elastomeric seal 26 and be designed in the direction of the elastomeric seal 26 correspondingly (eg, round).

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (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)
  • Casings For Electric Apparatus (AREA)
  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
  • Gasket Seals (AREA)

Claims (5)

  1. Couvercle (1, 10, 20) de carter destiné à un moteur à combustion interne, en particulier à des coiffes de culasses cylindriques ou à des carters d'huile, en vue de la fixation au bloc-moteur (5, 13, 21) de manière amovible et étanche aux fluides, comportant une garniture d'étanchement (3, 12, 26) en élastomère située sur le rebord (2, 11) dudit couvercle (1, 10, 20) de carter, sachant qu'il est intérieurement prévu, sur ledit rebord (2, 11) dudit couvercle (1, 10, 20) de carter, un prolongement axial (7, 14) qui est orienté dans la direction du bloc-moteur (5, 13, 21) et fait saillie axialement au-delà de la surface d'étanchement (4, 15), de telle sorte que ledit couvercle de carter soit au moins adéquatement positionné, caractérisé par le fait que le prolongement (7, 14) est réalisé de manière à donner naissance à une contre-dépouille revêtant la forme d'un chanfrein (16) ; et par le fait que ledit prolongement (14) comporte, à l'extrémité axialement inférieure, un chanfrein supplémentaire (19) réalisé en sens inverse de la direction du premier chanfrein (16).
  2. Couvercle de carter selon la revendication 1, caractérisé par le fait que le prolongement (14) est partiellement façonné sur le rebord (2, 11) dudit couvercle (1, 10, 20) de carter.
  3. Couvercle de carter selon la revendication 1, caractérisé par le fait que le prolongement (14) est façonné périphériquement sur le rebord (2, 11) dudit couvercle (10) de carter.
  4. Couvercle de carter selon l'une des revendications 1 à 3, caractérisé par le fait que le prolongement (14) est façonné de telle sorte que ledit couvercle (10) de carter soit centré et coincé.
  5. Couvercle de carter selon l'une des revendications 1 à 4, caractérisé par le fait que le matériau constituant ledit couvercle de carter est une matière plastique.
EP02016594A 2001-08-24 2002-07-25 Couvercle avec un dispositif pour rendre sûr des forces d'étanchéité Expired - Lifetime EP1288475B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10141570A DE10141570B4 (de) 2001-08-24 2001-08-24 Gehäusedeckel mit Einrichtung zur Absicherung der Dichtkräfte
DE10141570 2001-08-24

Publications (3)

Publication Number Publication Date
EP1288475A2 EP1288475A2 (fr) 2003-03-05
EP1288475A3 EP1288475A3 (fr) 2003-08-20
EP1288475B1 true EP1288475B1 (fr) 2007-10-10

Family

ID=7696515

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02016594A Expired - Lifetime EP1288475B1 (fr) 2001-08-24 2002-07-25 Couvercle avec un dispositif pour rendre sûr des forces d'étanchéité

Country Status (5)

Country Link
US (1) US6863039B2 (fr)
EP (1) EP1288475B1 (fr)
AT (1) ATE375443T1 (fr)
DE (2) DE10141570B4 (fr)
ES (1) ES2291398T3 (fr)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060255547A1 (en) * 2005-05-12 2006-11-16 Widder Edward S Zip strip seal
DE102007032649A1 (de) * 2007-07-13 2009-01-15 Man Nutzfahrzeuge Ag Wanne und Verfahren zu ihrer Herstellung
DE102007063257A1 (de) * 2007-12-31 2009-07-02 Mahle International Gmbh Lagereinrichtung
US7631630B2 (en) * 2008-01-07 2009-12-15 Federal-Mogul World Wide, Inc. Vehicle engine and snap-on engine cover assembly therefor and method of assembly of the cover assembly to the engine
US7765971B1 (en) 2008-01-09 2010-08-03 Overacker Bernard S Valve cover system
US8073302B2 (en) * 2008-12-17 2011-12-06 3M Innovative Properties Company Telecommunication enclosure with an interlocking seal
JP5835836B2 (ja) * 2011-05-26 2015-12-24 内山工業株式会社 密封構造
JP5920167B2 (ja) 2012-10-17 2016-05-18 株式会社デンソー 熱交換器
US9016257B2 (en) 2012-12-17 2015-04-28 GM Global Technology Operations LLC Containment assembly for flowable materials
JP2015117663A (ja) * 2013-12-19 2015-06-25 株式会社豊田自動織機 シリンダヘッドとヘッドカバーとのシール構造
US9702465B1 (en) * 2016-08-10 2017-07-11 Fca Us Llc Seal for cylindrical ports
CN107509339B (zh) * 2017-09-22 2024-02-23 深圳传音制造有限公司 抗跌落壳体及电子产品
JP2021014902A (ja) * 2019-07-16 2021-02-12 Nok株式会社 トーショナルダンパー

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4164927A (en) * 1977-07-18 1979-08-21 Caterpillar Tractor Co. Reinforced stamped valve cover
JPS6383464A (ja) * 1986-09-25 1988-04-14 Yamaha Motor Co Ltd エンジンのヘッドカバーの締め付け装置
JPH06221441A (ja) * 1993-01-27 1994-08-09 Kinugawa Rubber Ind Co Ltd 内燃機関のシール構造

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59101568A (ja) * 1982-12-01 1984-06-12 Daihatsu Motor Co Ltd エンジンにおけるオイルバンの取付構造
DE4401486C2 (de) * 1994-01-21 1997-09-04 Cr Elastomere Gmbh Gehäusedeckel
DE19738275B4 (de) * 1997-09-02 2006-02-23 Cr Elastomere Gmbh Dichtung für Deckel von Brennkraftmaschinen
FR2776017B1 (fr) * 1998-03-13 2000-05-05 Renault Moteur a combustion interne comportant un dispositif anti-barbotage
DE10141569B4 (de) * 2001-08-24 2004-09-02 Federal-Mogul Sealing Systems Bretten Gmbh & Co. Kg Gehäusedeckel mit akustisch entkoppeltem Anschlag

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4164927A (en) * 1977-07-18 1979-08-21 Caterpillar Tractor Co. Reinforced stamped valve cover
JPS6383464A (ja) * 1986-09-25 1988-04-14 Yamaha Motor Co Ltd エンジンのヘッドカバーの締め付け装置
JPH06221441A (ja) * 1993-01-27 1994-08-09 Kinugawa Rubber Ind Co Ltd 内燃機関のシール構造

Also Published As

Publication number Publication date
EP1288475A2 (fr) 2003-03-05
ATE375443T1 (de) 2007-10-15
DE50211032D1 (de) 2007-11-22
EP1288475A3 (fr) 2003-08-20
ES2291398T3 (es) 2008-03-01
US6863039B2 (en) 2005-03-08
DE10141570B4 (de) 2004-09-02
DE10141570A1 (de) 2003-03-20
US20030037743A1 (en) 2003-02-27

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