Spark plug for internal combustion engine

Details Spark plug for internal combustion engine Spark plug for internal combustion engine

1980-10-30

1983-12-06

LaRoche, Eugene R.

Electric lamp and discharge devices

Spark plugs

Non-conducting material in or adjacent gap

313141, 313143, H01T 1352, H01T 1332

Patent

active

044196016

ABSTRACT:
A spark plug for an internal combustion engine disclosed herein includes a resistive semiconductor body connecting a center electrode and an earth electrode to perform a creeping discharge at low discharge voltages while keeping adequate ignition performances.
According to the invention, the spark plug comprises a back electrode at the back of a discharging gap to cause the creeping discharge on surfaces of an electric insulator which is resistant to electrolytic corrosion, thereby improving the durability of the plug and eliminating the trouble of electric waves of noises.

REFERENCES:
patent: 3967149 (1976-06-01), Eaton et al.
patent: 3995184 (1976-11-01), Insley
patent: 4110667 (1978-08-01), Graf vom Hagen
patent: 4261085 (1981-04-01), Nishio et al.
patent: 4264844 (1981-04-01), Axe et al.

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