GB994525A - Spark plugs - Google Patents

Spark plugs

Info

Publication number
GB994525A
GB994525A GB46129/62A GB4612962A GB994525A GB 994525 A GB994525 A GB 994525A GB 46129/62 A GB46129/62 A GB 46129/62A GB 4612962 A GB4612962 A GB 4612962A GB 994525 A GB994525 A GB 994525A
Authority
GB
United Kingdom
Prior art keywords
insulator
spark gap
plug
electrode assembly
end portion
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
GB46129/62A
Inventor
John Frederick Why
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.)
General Motors Ltd
Original Assignee
General Motors Ltd
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 General Motors Ltd filed Critical General Motors Ltd
Priority to GB46129/62A priority Critical patent/GB994525A/en
Priority to DE19631476311 priority patent/DE1476311B2/en
Priority to US328338A priority patent/US3267325A/en
Publication of GB994525A publication Critical patent/GB994525A/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
    • H01T13/40—Sparking plugs structurally combined with other devices
    • H01T13/41—Sparking plugs structurally combined with other devices with interference suppressing or shielding means
    • 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
    • H01T13/40—Sparking plugs structurally combined with other devices

Abstract

994,525. Sparking plugs. GENERAL MOTORS Ltd. Nov. 28, 1963 [Dec. 6, 1962], No. 46129/62. Heading F1B. A sparking plug includes elements which form an oscillatory circuit comprising a first capacitance connected between the plug voltage supply terminal and earth and formed by the spark plug centre electrode assembly the insulator and a metallic deposit on the external surface of a portion of the insulator, a second capacitance connected between the ignition spark gap electrodes, and a spark gap and inductance connected in series intermediate the sides of the two capacitances which are respectively connected to the upper and lower portions of the centre electrode assembly. Arranged in the axial bore 6 of the ceramic insulator 4, Fig. 1, is a spark gap element 8 comprising two metal end caps 9, 10 on opposite ends of a ceramic rod 11. The upper end portion of the insulator 4 is formed with a plurality of annular ribs 17 and between the lowermost rib 17 and the shouldered portion 15 of the insulator 4 the external surface of the latter is coated with a layer of silver as indicated by the reference Ag shown in the drawing an oscillatory circuit is formed by the inductance element constituted by the spring 12 (or in a modification a ferrite rod and wire coil) the spark gap element and the capacitance elements formed by the metallic deposit on the insulator 4 and by the construction and relative dimensions of the lower end portion of the insulator and the firing tip portion 3 of the centre electrode assembly 1 and the lower end portion of the plug shell 16. As shown in Fig. 6 the voltage multiplying effect may be increased by arranging several oscillatory circuits in cascade. The spark gaps S 1 , S 2 , S 3 will be progressively of increasing size. Other modifications are described.
GB46129/62A 1962-12-06 1962-12-06 Spark plugs Expired GB994525A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
GB46129/62A GB994525A (en) 1962-12-06 1962-12-06 Spark plugs
DE19631476311 DE1476311B2 (en) 1962-12-06 1963-12-03 Spark plug with pre-spark gap
US328338A US3267325A (en) 1962-12-06 1963-12-05 Combined spark plugs and oscillatory circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB46129/62A GB994525A (en) 1962-12-06 1962-12-06 Spark plugs

Publications (1)

Publication Number Publication Date
GB994525A true GB994525A (en) 1965-06-10

Family

ID=10439958

Family Applications (1)

Application Number Title Priority Date Filing Date
GB46129/62A Expired GB994525A (en) 1962-12-06 1962-12-06 Spark plugs

Country Status (3)

Country Link
US (1) US3267325A (en)
DE (1) DE1476311B2 (en)
GB (1) GB994525A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0408089A2 (en) * 1984-02-27 1991-01-16 Hensley Plasma Plug Partnership dba HDI Research Apparatus for initiating combustion of fuel-air mixtures in an internal combustion engine
GB2267125A (en) * 1992-05-13 1993-11-24 Dawson Royalties Ltd I.c.engine spark ignition circuit.

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3441797A (en) * 1967-02-09 1969-04-29 Ralph R Lewis Spark intensifier gap with a transformer coil around the cable
US3504228A (en) * 1967-07-31 1970-03-31 Champion Spark Plug Co Spark plug with an internal resistor
US3771006A (en) * 1972-02-14 1973-11-06 N Berry Ignition circuit radiation suppression structure
US3871349A (en) * 1973-01-12 1975-03-18 Brunswick Corp RFI suppression spark plug
US3882341A (en) * 1974-01-24 1975-05-06 Champion Spark Plug Co Spark plug with inductive suppressor
US4186712A (en) * 1974-10-22 1980-02-05 Brunswick Corporation RFI-suppressing ignition system for an internal combustion engine
US4029990A (en) * 1976-01-09 1977-06-14 Champion Spark Plug Company Spark plug construction
DE3308522A1 (en) * 1983-03-10 1984-09-13 Robert Bosch Gmbh, 7000 Stuttgart SPARK PLUG FOR INTERNAL COMBUSTION ENGINES
DE3333891A1 (en) * 1983-09-20 1985-04-04 Robert Bosch Gmbh, 7000 Stuttgart SPARK PLUG FOR INTERNAL COMBUSTION ENGINES
DE3338672C1 (en) * 1983-10-25 1985-03-28 Daimler-Benz Ag, 7000 Stuttgart Device for igniting combustible mixtures
DE3347027A1 (en) * 1983-12-24 1985-07-04 Robert Bosch Gmbh, 7000 Stuttgart SPARK PLUG FOR AN INTERNAL COMBUSTION ENGINE
FR2893455B1 (en) * 2005-11-14 2007-12-14 Renault Sas IGNITION CANDLE FOR INTERNAL COMBUSTION ENGINE
US8922102B2 (en) * 2006-05-12 2014-12-30 Enerpulse, Inc. Composite spark plug
US8049399B2 (en) 2006-07-21 2011-11-01 Enerpulse, Inc. High power discharge fuel ignitor
WO2013113005A1 (en) 2012-01-27 2013-08-01 Enerpulse, Inc. High power semi-surface gap plug
BR202012010571U2 (en) * 2012-05-04 2015-09-15 Ikat Do Brasil Comércio Imp Ação E Exportação Ltda spark plug for internal combustion engines incorporating a diode
JP6251139B2 (en) * 2014-08-14 2017-12-20 株式会社マキタ Spark plug cap

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1164082A (en) * 1914-09-21 1915-12-14 Elmer R Batchelder Electric ignition device.
US2415979A (en) * 1945-04-24 1947-02-18 United Aircraft Corp Combined spark plug and oscillatory circuit
FR1297896A (en) * 1961-05-26 1962-07-06 Comp Generale Electricite Improvements to anti-parasitic candles

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0408089A2 (en) * 1984-02-27 1991-01-16 Hensley Plasma Plug Partnership dba HDI Research Apparatus for initiating combustion of fuel-air mixtures in an internal combustion engine
EP0408089A3 (en) * 1984-02-27 1991-03-20 Hensley Plasma Plug Partnership Dba Hdi Research Apparatus for initiating combustion of fuel-air mixtures in an internal combustion engine
GB2267125A (en) * 1992-05-13 1993-11-24 Dawson Royalties Ltd I.c.engine spark ignition circuit.

Also Published As

Publication number Publication date
DE1476311A1 (en) 1969-03-13
DE1476311B2 (en) 1971-02-11
US3267325A (en) 1966-08-16

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