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GB1522989A - Spark plug - Google Patents

Spark plug

Info

Publication number
GB1522989A
GB1522989A GB4534975A GB4534975A GB1522989A GB 1522989 A GB1522989 A GB 1522989A GB 4534975 A GB4534975 A GB 4534975A GB 4534975 A GB4534975 A GB 4534975A GB 1522989 A GB1522989 A GB 1522989A
Authority
GB
United Kingdom
Prior art keywords
tubular body
central electrode
shrink
wall
electrodes
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
Application number
GB4534975A
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.)
Industrie Magneti Marelli SRL
Marelli Europe SpA
Original Assignee
Fabbrica Italiana Magneti Marelli SpA
Magneti Marelli SpA
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 Fabbrica Italiana Magneti Marelli SpA, Magneti Marelli SpA filed Critical Fabbrica Italiana Magneti Marelli SpA
Publication of GB1522989A publication Critical patent/GB1522989A/en
Expired 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
    • H01T13/52—Sparking plugs characterised by a discharge along a surface
    • 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
    • H01T13/54—Sparking plugs having electrodes arranged in a partly-enclosed ignition chamber

Landscapes

  • Spark Plugs (AREA)

Abstract

1522989 Spark-plug FABBRICA ITALIANA MAGNETI MARELLI SpA 31 Oct 1975 [23 Dec 1974] 45349/75 Heading F1B [Also in Division B3] A spark-plug comprises an earth electrode in the form of a tubular metal body 1 having holes 8 therein for the passage therethrough of a cooling medium and an end-wall 5 with openings 6 therethrough which extend parallel to the axis of the tubular body, a central electrode 2 disposed within the tubular body and insulated therefrom, an end 4 of the central electrode being spaced from the end-wall 5 of the tubular body, and a block of semi-conductor material 7 axially interposed between the end 4 of the central electrode and the end-wall 5 of the tubular body such that an electrical discharge between the electrodes passes over a surface of the block 7. The sparkplug is constructed by shrink-assembling the central electrode 2, the earth electrode 1 and their insulation 3 with cement or adhesive therebetween and shrink-assembling the semi-conductor block 7 with the electrodes at the same pressure as is used to shrink-assemble the electrodes and their insulation.
GB4534975A 1974-12-20 1975-10-31 Spark plug Expired GB1522989A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT3092174A IT1027965B (en) 1974-12-20 1974-12-20 High power spark plug for gas turbines - has semiconductor element between mid electrode and metal sleeve formed by stud

Publications (1)

Publication Number Publication Date
GB1522989A true GB1522989A (en) 1978-08-31

Family

ID=11232782

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4534975A Expired GB1522989A (en) 1974-12-20 1975-10-31 Spark plug

Country Status (4)

Country Link
DE (1) DE2549892A1 (en)
FR (1) FR2296289A1 (en)
GB (1) GB1522989A (en)
IT (1) IT1027965B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4419601A (en) 1979-11-05 1983-12-06 Nissan Motor Company, Limited Spark plug for internal combustion engine

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3500189C2 (en) * 1985-01-04 1993-12-23 Beru Werk Ruprecht Gmbh Co A Sliding spark ignition device
WO2007092972A1 (en) * 2006-02-17 2007-08-23 Ge Jenbacher Gmbh & Co Ohg Sparkplug

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2815463A (en) * 1951-09-27 1957-12-03 Bendix Aviat Corp Electrical apparatus
US2939983A (en) * 1957-12-20 1960-06-07 Gen Motors Corp Igniter plug

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4419601A (en) 1979-11-05 1983-12-06 Nissan Motor Company, Limited Spark plug for internal combustion engine

Also Published As

Publication number Publication date
FR2296289B1 (en) 1979-09-07
DE2549892A1 (en) 1976-07-01
IT1027965B (en) 1978-12-20
FR2296289A1 (en) 1976-07-23

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee