Contactless ignition system for internal combustion engine

Details Contactless ignition system for internal combustion engine Contactless ignition system for internal combustion engine

1978-05-12

1980-01-22

Myhre, Charles J.

Internal-combustion engines

Igniters

Incandescent

123148CA, 123148CB, 315209CD, F02P 100

Patent

active

041844670

ABSTRACT:
A contactless ignition system for an internal combustion engine in which a moderately rising timing signal and a steeply rising auxiliary signal are generated so that an auxiliary thyristor is triggered by the auxiliary signal to be conductive to render a main thyrister which is connected in series with the auxiliary thyristor to be conductive by the timing signal and in which a resistor for holding the auxiliary thyristor in the conductive state is connected in parallel with the main thyristor so that the ignition timing in the high speed range may be controlled by the auxiliary signal to prevent the excessive spark timing advance in the high speed range and also in the low speed range the auxiliary thyristor may be maintained in the conductive state until the main thyristor is made conductive to thereby prevent misfiring.

REFERENCES:
patent: 3596133 (1971-07-01), Warren et al.
patent: 3861373 (1975-01-01), Allwang et al.
patent: 4034731 (1977-07-01), Sato
patent: 4090488 (1978-05-01), Ohki et al.

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