EP0516356A1 - Zylinderkopfdichtung - Google Patents

Zylinderkopfdichtung Download PDF

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Publication number
EP0516356A1
EP0516356A1 EP92304664A EP92304664A EP0516356A1 EP 0516356 A1 EP0516356 A1 EP 0516356A1 EP 92304664 A EP92304664 A EP 92304664A EP 92304664 A EP92304664 A EP 92304664A EP 0516356 A1 EP0516356 A1 EP 0516356A1
Authority
EP
European Patent Office
Prior art keywords
head gasket
metal plate
gasket
surface pressure
rubber layer
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
EP92304664A
Other languages
English (en)
French (fr)
Other versions
EP0516356B1 (de
Inventor
Hiroshi Saito
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.)
Nichias Corp
Original Assignee
Nichias Corp
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=12810398&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0516356(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Nichias Corp filed Critical Nichias Corp
Publication of EP0516356A1 publication Critical patent/EP0516356A1/de
Application granted granted Critical
Publication of EP0516356B1 publication Critical patent/EP0516356B1/de
Anticipated expiration legal-status Critical
Revoked 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
    • F02F11/00—Arrangements of sealings in combustion engines 
    • F02F11/002—Arrangements of sealings in combustion engines  involving cylinder heads

Definitions

  • This invention relates to an improvement of a head gasket for major use between a cylinder block and a cylinder head in an automobile engine.
  • a known existing head gasket of this type is in the form of a sheet element punched out from a soft steel plate or made by bonding asbestos joint sheets or expanded graphite sheets on opposite surfaces of a steel plate or an embossed aluminum base material.
  • a metal gasket punched out from a soft steel plate is not flexible because of a high modulus of elasticity, it often fails to maintain close contact with the opposed surface of a counterpart member at a portion between the cylinder block and the cylinder (a portion distant from clamping bolts) in which the surface pressure is relatively low when deformation is caused by thermal distortion or thermal vibration, and therefore invites fluid leakage (gas, oil or cooling water).
  • An asbestos joint sheet can maintain close contact with a counterpart member even at a portion with a low surface pressure. However, because of a number of voids present in the interior of the material itself, it is not sufficiently airtight when the contacting surface pressure is low. In addition, the use of an asbestos joint sheet is limited because of environmental contamination.
  • a gasket using expanded graphite sheets is expensive. Since a gasket such as a cylinder gasket has a large area, if it is entirely made of graphite, the gasket manufacturing cost is substantially increased. In addition, graphite is liable to be damaged and is therefore difficult to handle.
  • the invention provides a structure in which a cellular rubber layer defining discrete cells therein is bonded to one or both of the opposite surfaces of a metal plate.
  • the head gasket includes layers of cellular rubber defining discrete cells in the interior and bonded to the metal plate, a large amount of compression is obtained even with a small clamping pressure. Therefore, close contact with a counterpart member is improved, and sufficient sealing effect is ensured at a portion in which the surface pressure is low because of long intervals among bolts, in particular, in paths for cooling water, oil and so forth.
  • cells in the cellular rubber layers are discrete and do not communicate with each other, fluid leakage through the material never occurs in a low surface pressure portion of the gasket.
  • Fig. 1 is a cross-sectional view of a head gasket material taken as an embodiment of the invention.
  • Fig. 2 is a plan view of the head gasket material.
  • Fig. 3 is a plan view of a finished head gasket.
  • Fig. 4 is an enlarged cross-sectional view of the part of a cylinder bore grommet in a head gasket forming a further embodiment of the invention.
  • Fig. 5 is an enlarged cross-sectional view of the part of a cylinder bore in a head gasket forming another embodiment of the invention.
  • Fig. 6 is an enlarged cross-sectional view of the part of a cylinder bore in a head gasket forming yet another embodiment of the invention.
  • Fig. 7 is an enlarged cross-sectional view of the part of a cylinder bore grommet in a head gasket forming yet a further embodiment of the invention.
  • Fig. 8 is an enlarged cross-sectional view of the part of a cylinder bore grommet in a head gasket forming yet another embodiment of the invention.
  • Fig. 1 is a cross-sectional view of a gasket material
  • Fig. 2 is a plan view of the same
  • Fig. 3 is a plan view of a finished head gasket.
  • letter A denotes a sheet gasket element
  • 1 designates a metal plate
  • 2 indicates a cellular rubber layer including discrete cells therein and bonded to each surface of the metal plate.
  • the illustrated embodiment includes two cellular rubber layers 2 on opposite surfaces of the metal plate, the cellular rubber layer 2 may be provided on only one surface of the metal plate.
  • a stainless steel plate (SUS), a cold-rolled steel plate (SPCC) or an aluminum plate may be used to prepare the metal plate of the head gasket element A.
  • the metal plate is not limited to these materials.
  • Proposed rubber materials for the cellular rubber layer including discrete cells are nitrile rubber, acrylic rubber and fluororubber. Also other rubber materials may be used as desired.
  • the preferred thickness of the metal plate is of the order of 0.10 to 3.00 mm for the metal plate, and that of the cellular rubber layer is of the order of 200 to 1000 ⁇ .
  • Figs. 4 to 8 show various embodiments of grommet attaching processing and bead processing for the cylinder bore of the head gasket.
  • Fig. 4 shows an embodiment in which the cellular rubber layer 2 is partly removed around the bore, and a grommet 4 is mounted onto the exposed margin of the metal plate 1.
  • Fig. 5 shows an embodiment in which spring steel is used as a material of the metal plate 1, and a bead 5 is formed by the entire thickness of the structure around the bore.
  • Fig. 6 shows an embodiment in which the cellular rubber layer 2 is partly removed around the bore, and a bead 6 is formed on the exposed margin of the metal plate 1.
  • Fig. 7 shows a combination of the arrangements of Figs. 4 and 6.
  • Fig. 8 shows an embodiment in which a metal ring 7 is incorporated into the arrangement of Fig. 4.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Gasket Seals (AREA)
EP92304664A 1991-05-31 1992-05-22 Zylinderkopfdichtung Revoked EP0516356B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP048693U JPH0586070U (ja) 1991-05-31 1991-05-31 ヘッドガスケット
JP48693/91 1991-05-31

Publications (2)

Publication Number Publication Date
EP0516356A1 true EP0516356A1 (de) 1992-12-02
EP0516356B1 EP0516356B1 (de) 1995-09-13

Family

ID=12810398

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92304664A Revoked EP0516356B1 (de) 1991-05-31 1992-05-22 Zylinderkopfdichtung

Country Status (3)

Country Link
EP (1) EP0516356B1 (de)
JP (1) JPH0586070U (de)
DE (1) DE69204744T2 (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1995029333A1 (en) * 1994-04-25 1995-11-02 Trelleborg Rubore Ab Head gasket
EP1582784A1 (de) * 2004-03-31 2005-10-05 Nichias Corporation Dichtungsmaterial
CN102797588A (zh) * 2012-08-20 2012-11-28 烟台福尔福密封垫板有限公司 覆层式内燃机气缸密封垫板

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5653695B2 (ja) * 2010-09-10 2015-01-14 三菱重工業株式会社 ガスケット及び電動圧縮機
JP6367177B2 (ja) 2015-12-28 2018-08-01 ニチアス株式会社 シリンダヘッドガスケット及びシリンダヘッドガスケット用ステンレス鋼板

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB955215A (en) * 1961-10-23 1964-04-15 Mccord Corp Improvements in or relating to cylinder head gasket
US4049856A (en) * 1976-10-16 1977-09-20 Tba Industrial Products Limited Gaskets
EP0407765A1 (de) * 1989-07-13 1991-01-16 Fel-Pro Incorporated Zylinderkopfabdichtung mit Abdichtungen mit Mehrstufen-Kompressibilität
DE4111533A1 (de) * 1990-04-09 1991-10-17 Nissan Motor Klopfsensorvorrichtung

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5731550B2 (de) * 1975-02-03 1982-07-05

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB955215A (en) * 1961-10-23 1964-04-15 Mccord Corp Improvements in or relating to cylinder head gasket
US4049856A (en) * 1976-10-16 1977-09-20 Tba Industrial Products Limited Gaskets
EP0407765A1 (de) * 1989-07-13 1991-01-16 Fel-Pro Incorporated Zylinderkopfabdichtung mit Abdichtungen mit Mehrstufen-Kompressibilität
DE4111533A1 (de) * 1990-04-09 1991-10-17 Nissan Motor Klopfsensorvorrichtung

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 13, no. 553 (C-663)8 December 1989 & JP-A-1 229 091 ( NIPPON REINZ CO LTD ) 12 September 1989 *
PATENT ABSTRACTS OF JAPAN vol. 14, no. 113 (M-944)(4056) 2 March 1990 & JP-A-1 313 658 ( NIPPON REINZ CO LTD ) 19 December 1989 *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1995029333A1 (en) * 1994-04-25 1995-11-02 Trelleborg Rubore Ab Head gasket
EP1582784A1 (de) * 2004-03-31 2005-10-05 Nichias Corporation Dichtungsmaterial
US7771817B2 (en) 2004-03-31 2010-08-10 Nichias Corporation Gasket material
CN102797588A (zh) * 2012-08-20 2012-11-28 烟台福尔福密封垫板有限公司 覆层式内燃机气缸密封垫板

Also Published As

Publication number Publication date
DE69204744D1 (de) 1995-10-19
DE69204744T2 (de) 1996-02-22
JPH0586070U (ja) 1993-11-19
EP0516356B1 (de) 1995-09-13

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