Long-life, anti-fouling, high current, extended gap, low heat ca

Details Long-life, anti-fouling, high current, extended gap, low heat ca Long-life, anti-fouling, high current, extended gap, low heat ca

1995-06-21

1996-11-26

Nelli, Raymond A.

Internal-combustion engines

Igniters

Sparkers

F02P 500

Patent

active

055774717

ABSTRACT:
An improved anti-fouling controlled erosion long life spark plug (36) for high current arc type spark discharges with low heat absorbing large circular gap (31) electrode structure comprised of a conical section center electrode (26) and low mass ring ground electrode (21) supported by three legs (24) defining flow-through slots (25) behind the ring which extends into the combustion chamber and an insulator end (13a) recessed with respect to the flow-through slots to prevent its fouling, the plug end electrode structure minimizing flow obstruction, flame quenching, and heat absorption from the combusting air-fuel mixture.

REFERENCES:
patent: 968687 (1910-08-01), Provandie
patent: 2071450 (1937-02-01), Anderson
patent: 2292216 (1942-08-01), Doran
patent: 2301686 (1942-11-01), Doran
patent: 4730582 (1988-03-01), Lindsay
patent: 5373214 (1994-12-01), McCready
patent: 5408961 (1995-04-01), Smith
patent: 5461275 (1995-10-01), Oshima
patent: 5493171 (1996-02-01), Wood, III et al.

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