High efficiency, extended life spark plug having shaped firing t

Details High efficiency, extended life spark plug having shaped firing t High efficiency, extended life spark plug having shaped firing t

1994-02-08

1999-01-05

Patel, Vip

Electric lamp and discharge devices

Spark plugs

Particular electrode structure or spacing

H01T 1320

Patent

active

058567240

ABSTRACT:
A spark plug is provided which is suitable for use in a spark ignition system for an internal combustion engine. The spark plug is equipped with a specially configured firing tip on each of its electrodes for the purpose of minimizing the demand voltage of the spark plug, as well as extending the life of the spark plug by maximizing the time over which the demand voltage will remain within an acceptable level. For this purpose, the firing tips are configured such that their firing surfaces include at least three edges and three corners which serve as arc initiation sites of a relatively low resistance arc path between the electrodes.

REFERENCES:
patent: 2946912 (1960-07-01), Christenson
patent: 3673452 (1972-06-01), Brennen
patent: 4540910 (1985-09-01), Kondo et al.
patent: 4700103 (1987-10-01), Yamaguchi et al.
patent: 5196760 (1993-03-01), Takamura et al.
patent: 5273474 (1993-12-01), Oshima et al.

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