Spark plug for internal-combustion engine

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

1988-04-15

1989-07-04

Yusko, Donald J.

Electric lamp and discharge devices

Spark plugs

Particular electrode structure or spacing

313141, H01T 1320

Patent

active

048454001

ABSTRACT:
A spark plug for an automotive internal combustion engine providing improved ignition even when carbon is deposited on the insulator of the plug. A rich fuel-air ratio causes carbon to be deposited on spark plug insulators, thereby decreasing its effective insulation. By limiting the geometrical dimension of the plug's center electrode, ground electrode, and insulator the problem of carbon build-up is overcome. The sizes of these elements have certain allowable ranges that enhance the igniting effect of the plug.

REFERENCES:
patent: 4109633 (1978-08-01), Mitsudo et al.
patent: 4211952 (1980-07-01), Iwata et al.

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