Spark plug having an ablative coating for anticontaminat fouling

Details Spark plug having an ablative coating for anticontaminat fouling Spark plug having an ablative coating for anticontaminat fouling

1991-12-23

1993-12-28

Yusko, Donald J.

Electric lamp and discharge devices

Spark plugs

Shaped electrode chamber, insulator end, shell skirt, baffle...

313127, 313137, 123169CL, H01T 1300, H01T 1314

Patent

active

052742989

ABSTRACT:
A spark plug is provided for an internal combustion engine and includes a center electrode having a combustion chamber end and a ceramic insulator having an end portion over which an ablative coating is formed for removing contaminants deposited thereon. The ablative coating is capable of ablating completely during sustained operation of the spark plug.

REFERENCES:
patent: 3345532 (1967-10-01), Mattarella
patent: 3365605 (1968-01-01), Linstedt
patent: 4250426 (1981-02-01), Nakajima et al.
patent: 4267483 (1981-05-01), Nakajima et al.
patent: 4415828 (1983-11-01), Mizuno et al.
patent: 4914344 (1990-04-01), Watanabe et al.
patent: 4937484 (1990-06-01), Ishino

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