Spark plug and rotary engine combination

Details Spark plug and rotary engine combination Spark plug and rotary engine combination

1975-10-14

1977-02-15

Croyle, Carlton R.

Internal-combustion engines

Combined devices

Generating plants

123169R, F02B 5312, F02P 1300

Patent

active

040077144

ABSTRACT:
The improved combination of a rotary internal combustion engine and spark plug provides a bore in the engine housing extending from the exterior of the housing into communication with the rotor cavity defined by the housing. The bore has a threaded portion to receive the threaded shank portion of the spark plug and an annular shoulder extending in a plane substantially normal to the longitudinal axis of the bore. The spark plug has a complementary annular shoulder portion extending in a plane substantially parallel to the plane of the shoulder of the bore. The shoulder portion of the spark plug is so located as to engage the shoulder of the bore to thereby position the spark gap end of the spark plug relative to the rotor cavity. An annular channel means is provided adjacent the shoulder of the bore to provide an annular space into which is placed a gasket to prevent fluid leakage through the interstices between the bore and spark plug.

REFERENCES:
patent: 3739753 (1973-06-01), Burley et al.
patent: 3831562 (1974-08-01), Paxton et al.
patent: 3855972 (1974-12-01), Roberts
patent: 3897759 (1975-08-01), Sasaki et al.

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