EP0664388A1 - Couvre-culbuteurs - Google Patents

Couvre-culbuteurs Download PDF

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Publication number
EP0664388A1
EP0664388A1 EP95100584A EP95100584A EP0664388A1 EP 0664388 A1 EP0664388 A1 EP 0664388A1 EP 95100584 A EP95100584 A EP 95100584A EP 95100584 A EP95100584 A EP 95100584A EP 0664388 A1 EP0664388 A1 EP 0664388A1
Authority
EP
European Patent Office
Prior art keywords
cover
spring body
housing cover
spring
cover according
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
Application number
EP95100584A
Other languages
German (de)
English (en)
Other versions
EP0664388B1 (fr
Inventor
Bernd Dipl.-Ing. Stephan
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 EP0664388A1 publication Critical patent/EP0664388A1/fr
Application granted granted Critical
Publication of EP0664388B1 publication Critical patent/EP0664388B1/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
    • 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 

Definitions

  • the invention relates to a housing cover, in particular an oil pan or valve cover, for releasable, liquid-tight fastening to the engine block of internal combustion engines, the cover having holes for fastening screws provided with rubber sleeves in order to produce a sufficient pretensioning force on an elastomeric seal running on the edge of the cover.
  • EP 0 218 200 B1 discloses a generic valve cover for the cylinder head of an internal combustion engine.
  • the cover has holes in its base for the passage of threaded bolts designed as stud bolts. Rubber sleeves extend in the holes. On the one hand, these serve to seal the stud bolts and, on the other hand, they dampen the transmission of structure-borne noise.
  • a defined pretensioning force is also generated in the rubber sleeves, so that the seal on the edge of the cover is pressed onto the engine block with a certain force.
  • the rubber sleeves act as rubber springs and ensure that an adequate seal is created.
  • the invention has for its object to improve a generic housing cover with regard to the sealing effect of the seal on the edge of the lid.
  • This object is achieved in that a metallic spring body is provided to adjust the biasing force. In this way, a spring effect is achieved that generates a sufficient preload over the entire operating time.
  • the spring body is preferably supported on the outer surface of the cover.
  • a defined pretensioning force can be generated, the spring body being connected to the rubber sleeve in such a way that the fastening screw is supported axially on the spring body.
  • the spring body should preferably be made of steel.
  • the spring body as a leaf spring.
  • Other spring bodies which are formed for example from spring band steel, could also be used.
  • the spring body should have a sound-absorbing pad at least in the area of contact with the cover.
  • FIG. 1 shows a housing cover (1) in the form of a valve cover for internal combustion engines.
  • the housing cover (1) is made of aluminum.
  • an elastomer seal (4) is arranged on the edge of the cover (3).
  • several holes (5) are arranged around the circumference, through which stud bolts (6) extend.
  • Rubber sleeves (7) which are attached to the cover (1), are used to seal the stud bolts. are connected.
  • the rubber sleeves (7) can be vulcanized in or pressed in.
  • a spring body (8) made of steel strip is positively connected to the rubber sleeve (7).
  • the spring body (8) is supported on the metal surface (9) of the cover (1).
  • the spring body (8) is pressed axially and thus generates a pretensioning force on the seal (4). Since the spring body (8) is made of metal, the contact pressure remains largely constant over a long period and over a wide temperature range. In contrast to the rubber sleeve (7), no aging occurs. In addition, this spring body (8) can compensate for a flow / setting of the seal (4).
  • a thin sound-absorbing layer (11) can be applied to the underside of the spring body (8) for sound absorption.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Cylinder Crankcases Of Internal Combustion Engines (AREA)
  • Bolts, Nuts, And Washers (AREA)
  • Motor Or Generator Frames (AREA)
EP95100584A 1994-01-21 1995-01-18 Couvre-culbuteurs Expired - Lifetime EP0664388B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4401486A DE4401486C2 (de) 1994-01-21 1994-01-21 Gehäusedeckel
DE4401486 1994-01-21

Publications (2)

Publication Number Publication Date
EP0664388A1 true EP0664388A1 (fr) 1995-07-26
EP0664388B1 EP0664388B1 (fr) 1998-04-01

Family

ID=6508251

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95100584A Expired - Lifetime EP0664388B1 (fr) 1994-01-21 1995-01-18 Couvre-culbuteurs

Country Status (3)

Country Link
EP (1) EP0664388B1 (fr)
DE (2) DE4401486C2 (fr)
ES (1) ES2114234T3 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1288475A2 (fr) 2001-08-24 2003-03-05 Federal-Mogul Sealing Systems Bretten GmbH & Co. KG Couvercle avec un dispositif pour rendre sûr des forces d'étanchéité
EP1288476A2 (fr) 2001-08-24 2003-03-05 Federal-Mogul Sealing Systems Bretten GmbH & Co. KG Couvercle avec un butoir isolé accoustiquement

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29612020U1 (de) * 1996-07-10 1996-10-02 Riesselmann F & H Kunststoff Thermoplastisches Kunststoffbauteil, insbesondere Zylinderkopfhaube für Motoren
DE202008004036U1 (de) * 2008-03-20 2009-08-06 Mann+Hummel Gmbh Ölwanne für eine Brennkraftmaschine

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3115268A (en) * 1962-08-10 1963-12-24 Genova Andrew De Valve tappet cover hold-down
US4456268A (en) * 1982-09-30 1984-06-26 Allis-Chalmers Corp. Fastening means in sealed gasket assembly including shoulder bolt
US4571133A (en) * 1984-07-23 1986-02-18 General Motors Corporation Loading washer assembly
EP0268200A2 (fr) * 1986-11-15 1988-05-25 Karl Joh Gummiwarenfabrik GmbH Couvercle de soupape pour la culasse d'un moteur à combustion interne
EP0547306A1 (fr) * 1991-12-17 1993-06-23 CR Elastomere GmbH Couvercle pour moteurs à combustion interne

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3115268A (en) * 1962-08-10 1963-12-24 Genova Andrew De Valve tappet cover hold-down
US4456268A (en) * 1982-09-30 1984-06-26 Allis-Chalmers Corp. Fastening means in sealed gasket assembly including shoulder bolt
US4571133A (en) * 1984-07-23 1986-02-18 General Motors Corporation Loading washer assembly
EP0268200A2 (fr) * 1986-11-15 1988-05-25 Karl Joh Gummiwarenfabrik GmbH Couvercle de soupape pour la culasse d'un moteur à combustion interne
EP0547306A1 (fr) * 1991-12-17 1993-06-23 CR Elastomere GmbH Couvercle pour moteurs à combustion interne

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1288475A2 (fr) 2001-08-24 2003-03-05 Federal-Mogul Sealing Systems Bretten GmbH & Co. KG Couvercle avec un dispositif pour rendre sûr des forces d'étanchéité
EP1288476A2 (fr) 2001-08-24 2003-03-05 Federal-Mogul Sealing Systems Bretten GmbH & Co. KG Couvercle avec un butoir isolé accoustiquement
US6691667B2 (en) 2001-08-24 2004-02-17 Federal-Mogul Sealing Systems Bretten Gmbh & Co. Kg Casing cover having an acoustically decoupled stop
DE10141569B4 (de) * 2001-08-24 2004-09-02 Federal-Mogul Sealing Systems Bretten Gmbh & Co. Kg Gehäusedeckel mit akustisch entkoppeltem Anschlag
DE10141570B4 (de) * 2001-08-24 2004-09-02 Federal-Mogul Sealing Systems Bretten Gmbh & Co. Kg Gehäusedeckel mit Einrichtung zur Absicherung der Dichtkräfte
US6863039B2 (en) 2001-08-24 2005-03-08 Federal-Mogul Sealing Systems Bretten Gmbh & Co. Kg Casing cover having a device for assuring sealing forces

Also Published As

Publication number Publication date
ES2114234T3 (es) 1998-05-16
DE4401486A1 (de) 1995-07-27
DE59501735D1 (de) 1998-05-07
EP0664388B1 (fr) 1998-04-01
DE4401486C2 (de) 1997-09-04

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