Spark plug with a wide discharge gap

Details Spark plug with a wide discharge gap Spark plug with a wide discharge gap

1981-07-22

1984-03-27

Moore, David K.

Electric lamp and discharge devices

Spark plugs

Non-conducting material in or adjacent gap

313131A, 313137, H01T 1302

Patent

active

044397070

ABSTRACT:
A spark plug with a wide discharge gap includes an insulating layer formed on one or the other of its center and ground electrodes and disposed in the gap between the electrodes. The insulating layer includes an inner insulating layer of a material having a high dielectric constant and an outer insulating layer of a material having an excellent resistance to heat and high voltage, which surrounds the inner insulating layer, whereby ensuring a reduced discharge voltage, an improved ignition performance and improved heat resistance and durability.

REFERENCES:
patent: 2961563 (1960-11-01), Peras
patent: 3488544 (1970-01-01), Burley et al.
patent: 3883762 (1975-05-01), Harris et al.
patent: 4092558 (1978-05-01), Yamada
patent: 4337408 (1982-06-01), Sone et al.
Segall, Development of Low Voltage Shunted Surface Gap Spark and Igniter Plugs . . . , WADC Technical Report 55-191, Jan. 1955, pp. X-9.
Anonymous, Research Disclosure, No. 206, Jun. 1981, pp. 209-210, 20613 Spark Plug.

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