Ignition means for rotary piston engines

Details Ignition means for rotary piston engines Ignition means for rotary piston engines

1978-02-14

1980-03-25

Koczo, Michael

Internal-combustion engines

Rotary

With ignition means

123169EL, F02B 5312

Patent

active

041944860

ABSTRACT:
An ignition device for rotary piston engines. The device has an ignition plug disposed in a bore formed in an inner wall surface of a casing of the engine. The plug is of the surface gap and air gap discharge type and has a discharge end constituted by inner and outer electrodes spaced apart from each other through a surface gap discharge distance defined by a surface of an insulative sleeve encircling the inner electrode and an air gap discharge distance defined between the insulative sleeve and the outer electrode. The surface gap discharge distance is not less than 0.6 mm and not greater than 1.3 mm. The air gap discharge distance is not less than 0.7 mm and not greater than 1.4 mm. The surface gap discharge distance is not greater than the air gap discharge distance. The outer electrode has a tip end axially retreated with respect to the surface of the insulative sleeve by a distance between 0.3-1.0 mm. The ignition plug is located with the discharge end disposed in proximity to the inner wall surface of the casing.

REFERENCES:
patent: 3831562 (1974-08-01), Paxton et al.

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