GB2242703B - Spark plug for internal combusiton engine - Google Patents

Spark plug for internal combusiton engine

Info

Publication number
GB2242703B
GB2242703B GB9007659A GB9007659A GB2242703B GB 2242703 B GB2242703 B GB 2242703B GB 9007659 A GB9007659 A GB 9007659A GB 9007659 A GB9007659 A GB 9007659A GB 2242703 B GB2242703 B GB 2242703B
Authority
GB
United Kingdom
Prior art keywords
spark plug
electrode
inner core
outer layer
outer shell
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.)
Revoked
Application number
GB9007659A
Other versions
GB2242703A (en
GB9007659D0 (en
Inventor
Michael Lenk
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.)
Champion Spark Plug Europe SA
Original Assignee
Champion Spark Plug Europe SA
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 Champion Spark Plug Europe SA filed Critical Champion Spark Plug Europe SA
Priority to GB9007659A priority Critical patent/GB2242703B/en
Publication of GB9007659D0 publication Critical patent/GB9007659D0/en
Priority to EP91907630A priority patent/EP0537156B1/en
Priority to DE69120677T priority patent/DE69120677T2/en
Priority to PCT/US1991/002239 priority patent/WO1991015887A1/en
Priority to AU76822/91A priority patent/AU7682291A/en
Priority to AT91907630T priority patent/ATE140107T1/en
Publication of GB2242703A publication Critical patent/GB2242703A/en
Application granted granted Critical
Publication of GB2242703B publication Critical patent/GB2242703B/en
Anticipated expiration legal-status Critical
Revoked legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01T—SPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
    • H01T13/00—Sparking plugs
    • H01T13/20—Sparking plugs characterised by features of the electrodes or insulation
    • H01T13/32—Sparking plugs characterised by features of the electrodes or insulation characterised by features of the earthed electrode
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01T—SPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
    • H01T13/00—Sparking plugs
    • H01T13/20—Sparking plugs characterised by features of the electrodes or insulation
    • H01T13/39—Selection of materials for electrodes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01T—SPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
    • H01T21/00—Apparatus or processes specially adapted for the manufacture or maintenance of spark gaps or sparking plugs
    • H01T21/02—Apparatus or processes specially adapted for the manufacture or maintenance of spark gaps or sparking plugs of sparking plugs

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Spark Plugs (AREA)

Abstract

The spark plug comprises an outer shell (1), a central electrode (2), an insulator (3) surrounding the central electrode (2) and at least one ground electrode (4B) connected at at least one point to the outer shell (1). At least one (4B) of the electrodes consists of an outer layer made of a corrosion resistant material (e.g. nickel or a nickel alloy) and of an inner core made of a material having good thermal conductivity characteristics and a good corrosion and erosion resistance (e.g. silver or a silver alloy). In front of the bottom end of the other electrode (2), i.e. at the spark gap (5) the inner core projects through the outer layer perpendicularly to the longitudinal axis of said one electrode (4B). Several embodiments of the spark plug as well as several methods for making the electrodes of the spark plug are described.
GB9007659A 1990-04-04 1990-04-04 Spark plug for internal combusiton engine Revoked GB2242703B (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
GB9007659A GB2242703B (en) 1990-04-04 1990-04-04 Spark plug for internal combusiton engine
AU76822/91A AU7682291A (en) 1990-04-04 1991-04-02 Spark plug for internal combustion engine
DE69120677T DE69120677T2 (en) 1990-04-04 1991-04-02 SPARK PLUG FOR INTERNAL COMBUSTION ENGINE
PCT/US1991/002239 WO1991015887A1 (en) 1990-04-04 1991-04-02 Spark plug for internal combustion engine
EP91907630A EP0537156B1 (en) 1990-04-04 1991-04-02 Spark plug for internal combustion engine
AT91907630T ATE140107T1 (en) 1990-04-04 1991-04-02 SPARK PLUG FOR COMBUSTION ENGINE

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB9007659A GB2242703B (en) 1990-04-04 1990-04-04 Spark plug for internal combusiton engine

Publications (3)

Publication Number Publication Date
GB9007659D0 GB9007659D0 (en) 1990-05-30
GB2242703A GB2242703A (en) 1991-10-09
GB2242703B true GB2242703B (en) 1994-02-16

Family

ID=10673905

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9007659A Revoked GB2242703B (en) 1990-04-04 1990-04-04 Spark plug for internal combusiton engine

Country Status (6)

Country Link
EP (1) EP0537156B1 (en)
AT (1) ATE140107T1 (en)
AU (1) AU7682291A (en)
DE (1) DE69120677T2 (en)
GB (1) GB2242703B (en)
WO (1) WO1991015887A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2242703B (en) * 1990-04-04 1994-02-16 Champion Spark Plug Europ Spark plug for internal combusiton engine
GB2276207B (en) * 1993-03-18 1996-09-04 Nippon Denso Co A spark plug and a method of producing the same
DE69323192T2 (en) * 1993-08-02 1999-06-17 Cooper Automotive Products, Inc. (N.D.Ges.D. Staates Delaware), Houston, Tex. Spark plug electrodes

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2047339A (en) * 1979-03-13 1980-11-26 Texas Instruments Inc Spark plugs and center electrodes therefor
GB2068453A (en) * 1979-12-07 1981-08-12 Texas Instruments Inc Spark plugs and center electrodes therefor
US4585421A (en) * 1983-11-23 1986-04-29 The National Machinery Company Method of making copper-clad bimetal electrodes for spark plugs
EP0537156A1 (en) * 1990-04-04 1993-04-21 Cooper Ind Inc Spark plug for internal combustion engine.

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3146370A (en) * 1962-06-21 1964-08-25 Gen Motors Corp Spark plug with improved electrode
US3356882A (en) * 1965-10-21 1967-12-05 Ford Motor Co Spark plug having the center electrode sheath with a nickel alloy
US3967149A (en) * 1973-07-05 1976-06-29 Champion Spark Plug Company Spark plug
US4351095A (en) * 1977-12-12 1982-09-28 United Kingdom Atomic Energy Authority Method of making spark plugs
CA1138626A (en) * 1978-12-16 1983-01-04 Gkn Floform Limited Manufacture of bi-metal electrodes for spark plugs
FR2451648A1 (en) * 1979-03-13 1980-10-10 Texas Instruments Inc Spar plug middle electrode has corrosion and erosion resistant core - with sheath of higher thermal conductivity
US4526551A (en) * 1980-05-30 1985-07-02 Champion Spark Plug Company Production of electrodes
US4695759A (en) * 1981-10-29 1987-09-22 Champion Spark Plug Company Method for producing a composite center electrode and an electrode

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2047339A (en) * 1979-03-13 1980-11-26 Texas Instruments Inc Spark plugs and center electrodes therefor
GB2068453A (en) * 1979-12-07 1981-08-12 Texas Instruments Inc Spark plugs and center electrodes therefor
US4585421A (en) * 1983-11-23 1986-04-29 The National Machinery Company Method of making copper-clad bimetal electrodes for spark plugs
EP0537156A1 (en) * 1990-04-04 1993-04-21 Cooper Ind Inc Spark plug for internal combustion engine.

Also Published As

Publication number Publication date
DE69120677T2 (en) 1996-12-12
AU7682291A (en) 1991-10-30
GB2242703A (en) 1991-10-09
EP0537156A4 (en) 1994-04-27
ATE140107T1 (en) 1996-07-15
WO1991015887A1 (en) 1991-10-17
DE69120677D1 (en) 1996-08-08
EP0537156A1 (en) 1993-04-21
GB9007659D0 (en) 1990-05-30
EP0537156B1 (en) 1996-07-03

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Legal Events

Date Code Title Description
773K Patent revoked under sect. 73(2)/1977