Method and apparatus for igniting air-fuel mixture in an engine

Details Method and apparatus for igniting air-fuel mixture in an engine Method and apparatus for igniting air-fuel mixture in an engine

1975-11-05

1978-06-20

Croyle, Carlton R.

Internal-combustion engines

Rotary

With ignition means

123117R, F02B 5312

Patent

active

040955648

ABSTRACT:
A method and apparatus for igniting the air-fuel mixture within a rotary combustion engine. A primary transformer core half and its primary winding are positioned in the upper cover plate of a Wankel rotary engine. Three spark plugs are electrically connected to their own secondary transformer core halves and secondary windings in a hollow rotor piston. The transformer core halves are arranged so that whenever the rotor is in correct position for ignition to occur (around T.D.C.) the primary transformer core half and one secondary transformer core half are in proper alignment for magnetic flux coupling between the two transformer core halves. When so coupled, high voltage necessary for spark plug firing is induced in the secondary winding whenever the primary winding is excited with an alternating current generated by a gated power oscillator. The high voltage induced in the secondary winding is permitted to form a spark across the spark plug gap as long as the primary winding is so excited and the transformer core halves are magnetically coupled.

REFERENCES:
patent: 2988065 (1961-06-01), Wankel et al.
patent: 3206609 (1965-09-01), Dawes
patent: 3249097 (1966-05-01), King
patent: 3861369 (1975-01-01), Canup
patent: 3913550 (1975-10-01), Canup
patent: 3952708 (1976-04-01), Burley
patent: 3961613 (1976-06-01), Canup
patent: 4000724 (1977-01-01), Fowler
patent: 4022177 (1977-05-01), Canup et al.
Internal Combustion Engines, Obert, International Textbook Company, 1968, pp. 532-536.

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