EP0760902B1 - Zylinderdichtungsring - Google Patents

Zylinderdichtungsring Download PDF

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Publication number
EP0760902B1
EP0760902B1 EP95918228A EP95918228A EP0760902B1 EP 0760902 B1 EP0760902 B1 EP 0760902B1 EP 95918228 A EP95918228 A EP 95918228A EP 95918228 A EP95918228 A EP 95918228A EP 0760902 B1 EP0760902 B1 EP 0760902B1
Authority
EP
European Patent Office
Prior art keywords
steel plate
gasket
thickness
rubber
rubber films
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
EP95918228A
Other languages
English (en)
French (fr)
Other versions
EP0760902A1 (de
Inventor
Percy Josefsson
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.)
Trelleborg Rubore AB
Original Assignee
Trelleborg Rubore AB
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 Trelleborg Rubore AB filed Critical Trelleborg Rubore AB
Publication of EP0760902A1 publication Critical patent/EP0760902A1/de
Application granted granted Critical
Publication of EP0760902B1 publication Critical patent/EP0760902B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • F02F11/00—Arrangements of sealings in combustion engines
    • F02F11/002—Arrangements of sealings in combustion engines involving cylinder heads

Definitions

  • the present invention relates to a gasket, and more specifically to a cylinder head gasket for internal combustion engines.
  • Present-day cylinder head gaskets consist in a pack of several thin metal plates, which are often riveted together.
  • the pack may contain from three to six plates, which may have been coated with an extremely thin layer of paint, rubber or some other polymer that has been applied in the form of a solution or dispersion.
  • a gasket which comprises a metal band that has been coated with a layer of rubber on each side thereof.
  • the rubber layer is applied in the form of a solution and is then heated to drive-off the solvent and form said layer.
  • Prior publications DE-C2-3500071 and JP-A-62/101873 also teach cylinder head gaskets of this kind that are produced from different types of rubber solutions.
  • US-A 5,110,630 describes the manufacture of a metal-rubber gasket in which a thin steel band is treated with chromate and rubber adhesive in sequence in a continuous process followed by a heat-treatment process, whereafter a rubber layer is applied. This is said to be affected by coating the adhesive layer to a desired thickness.
  • the laminate will thus have an adhesive layer between each rubber layer and the metal surface.
  • the gaskets used today present problems and especially when used with engines in which the cylinder heads and engine blocks are comprised of dissimilar materials, as is becoming more and more usual. For instance, it is becoming more usual to produce the cylinder head from an aluminium alloy and to produce the engine block from cast iron. As a result of the different thermal properties of the materials, transverse movements occur between cylinder head and motor block while the engine is running.
  • An ideal gasket material for modern internal combustion engines shall thus exhibit good properties with regard to compressibility and its ability to absorb shear forces while, at the same time, being thin and easy to manufacture cheaply, besides having an effective blow-by resistance, which is particularly important in the present context, i.e. the gasket shall provide the best possible seal under the difficult conditions that prevail in respect of a cylinder head gasket.
  • the object of the present invention is to provide a cylinder head gasket which will fulfil the aforesaid high requirements that are placed on gaskets for modern engines which operate under highly advanced operating conditions.
  • the inventive cylinder head gasket has the characteristic features set forth in the following Claims.
  • the inventive cylinder head gasket is thus characterized in that it includes a laminate which comprises a thin stainless steel plate and/or heat-resistant steel plate.
  • the plate is coated on each side with still thinner carrier-calendared rubber films which have a thickness of at least 0.05 mm and are affixed to the steel plate by vulcanization.
  • the stainless and/or heat-resistant steel plate will suitably have a thickness of about 0.2-0.4 mm, and each of the rubber films will preferably have a thickness of 0.05-0.20 mm.
  • the outwardly facing surface of the rubber films will suitably have a textile-carrier structure, preferably a roughened or "pimpled" structure.
  • the specific combination of characteristic features defined in the Claims gives the laminate the unique combination of being compressible, having good shear-force absorbing ability and blow-by resistance (sealing ability), indicated above. It is thus important that the rubber coatings will have those specific properties and that specific structure that are exhibited by calendared rubber films, among other things homogeneity and uniformity with regard to both physical properties and dimensions, and shall be as pore-free as possible.
  • a laminate comprised of a 0.20 mm stainless steel plate and two 0.08 mm rubber layers was subjected to a compressibility test in accordance with the following:
  • a pack consisting in ten material samples measuring 40 x 40 mm was subjected to a pressure of 16.5 MPa with a force of 2.4 kN at room temperature. This was repeated seven times while maintaining the pressure for a period of one second.
  • the pack of laminate samples was found to have been compressed by 16 ⁇ m, which corresponds to a specific compressibility of 2 ⁇ m/10 mPa.
  • a test was carried out on a 4-cylinder, 2 litre, 16 valve SAAB 9000 fuel injection engine over a period of twenty-four hours.
  • the engine was prepared by lowering the piston heads to receive a thinner cylinder head gasket produced from the above laminate.
  • the gasket was produced from one single laminate consisting in 0.08 mm rubber/0.2 mm stainless steel/0.08 mm rubber of quality Rubore RGM-1-ST.
  • the engine was bench-run in accordance with a test programme which simulated motor-way driving, including long periods of full load at maximum r.p.m. and maximum torque, interspersed with periods of intermediate loads and interrupted by an idling period at thirty-minute intervals.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Gasket Seals (AREA)
  • Glass Compositions (AREA)
  • Cylinder Crankcases Of Internal Combustion Engines (AREA)
  • Seal Device For Vehicle (AREA)

Claims (4)

  1. Zylinderkopfdichtung für Verbrennungsmotoren, dadurch gekennzeichnet, daß die Dichtung ein Laminat aufweist, welches aus einer dünnen, nicht rostenden Stahlplatte oder einer hitzebeständigen Stahlplatte besteht, die auf jeder Seite mit immer dünneren trägerkalandrierten Gummifilm beschichtet ist, die eine Dicke von mindestens 0,05 mm haben und durch Vulkanisation an der Stahlplatte befestigt sind.
  2. Dichtung nach Anspruch 1, dadurch gekennzeichnet, daß die Stahlplatte eine Dicke von ungefähr 0,2 bis 0,4 mm hat und jede der Gummischichten eine Dicke von 0,05 bis 0,20 mm hat.
  3. Dichtung nach Anspruch 1 oder Anspruch 2, dadurch gekennzeichnet, daß die nach außen gekehrten Oberflächen der Gummifilme eine Textilträgerstruktur, vorzugsweise eine aufgerauhte oder gepickelte Struktur haben.
  4. Verwendung einer Dichtung nach den Ansprüchen 1 bis 3, dadurch gekennzeichnet, daß die Dichtung aus einer Vielzahl von Laminaten besteht, die zusammenvulkanisiert wurden.
EP95918228A 1994-04-25 1995-04-24 Zylinderdichtungsring Expired - Lifetime EP0760902B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
SE9401401 1994-04-25
SE9401401A SE502513C2 (sv) 1994-04-25 1994-04-25 Topplockspackning
PCT/SE1995/000443 WO1995029333A1 (en) 1994-04-25 1995-04-24 Head gasket

Publications (2)

Publication Number Publication Date
EP0760902A1 EP0760902A1 (de) 1997-03-12
EP0760902B1 true EP0760902B1 (de) 1999-03-24

Family

ID=20393771

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95918228A Expired - Lifetime EP0760902B1 (de) 1994-04-25 1995-04-24 Zylinderdichtungsring

Country Status (12)

Country Link
EP (1) EP0760902B1 (de)
AT (1) ATE178121T1 (de)
AU (1) AU2422495A (de)
CA (1) CA2186629C (de)
CZ (1) CZ286582B6 (de)
DE (1) DE69508578T2 (de)
DK (1) DK0760902T3 (de)
ES (1) ES2129821T3 (de)
GR (1) GR3029793T3 (de)
HU (1) HU218781B (de)
SE (1) SE502513C2 (de)
WO (1) WO1995029333A1 (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE509315C2 (sv) 1995-10-26 1999-01-11 Trelleborg Rubore Ab Packning

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2184133A5 (de) * 1972-05-05 1973-12-21 Farnam Co F D
DE3225420A1 (de) * 1981-07-10 1983-02-03 Felt Products Mfg. Co., 60076 Skokie, Ill. Dichtungsanordnung und verfahren zu ihrer herstellung
DE3500071A1 (de) * 1985-01-03 1986-07-03 Elring Dichtungswerke Gmbh, 7012 Fellbach Zylinderkopfdichtung
US5130203A (en) * 1988-07-28 1992-07-14 Nippon Leakless Industry Co., Ltd. Metal gasket and method of producing the same
SE465763B (sv) * 1990-03-09 1991-10-28 Rubore Materials Sweden Ab Saett att framstaella en materialbana foer tillverkning av packningar
JPH0586070U (ja) * 1991-05-31 1993-11-19 ニチアス株式会社 ヘッドガスケット

Also Published As

Publication number Publication date
SE9401401D0 (sv) 1994-04-25
SE9401401L (sv) 1995-10-26
ATE178121T1 (de) 1999-04-15
DE69508578T2 (de) 1999-07-15
HU9602939D0 (en) 1996-12-30
WO1995029333A1 (en) 1995-11-02
ES2129821T3 (es) 1999-06-16
AU2422495A (en) 1995-11-16
EP0760902A1 (de) 1997-03-12
GR3029793T3 (en) 1999-06-30
CA2186629C (en) 2003-06-17
HU218781B (hu) 2000-12-28
DK0760902T3 (da) 2003-04-14
CZ302296A3 (en) 1997-02-12
SE502513C2 (sv) 1995-11-06
DE69508578D1 (de) 1999-04-29
CZ286582B6 (cs) 2000-05-17
CA2186629A1 (en) 1995-11-02
HUT77502A (hu) 1998-05-28

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