Internal-combustion engines – High tension ignition system – Using capacitive storage and discharge for spark energy
Patent
1975-02-25
1976-09-28
Moose, Harry
Internal-combustion engines
High tension ignition system
Using capacitive storage and discharge for spark energy
123148CB, 315209CD, 317 96, F02P 900
Patent
active
039834611
ABSTRACT:
An ignition circuit of the capacitor discharge type is disclosed for internal combustion engines. The circuit comprises a transistor inverter which supplies a voltage doubler to charge a storage capacitor. The storage capacitor is connected to an ignition coil through a thyristor. Control means for the thyristor includes engine breaker points or equivalent for alternately preventing and enabling turn-on of the thyristor. A voltage divider provides gate triggering current to the thyristor on each cycle of the voltage supply. This produces either single or multiple ignition pulses for each breaker point cycle, depending upon the engine speed. The voltage divider includes a leakage resistor to limit the initial pulse and to allow current flow through the breaker points and also includes an isolation resistor to render the triggering point of the thyristor immune to changes in the breaker point circuit.
REFERENCES:
patent: 2799809 (1957-07-01), Lautenberger
patent: 3383555 (1968-05-01), Minks
patent: 3545419 (1970-12-01), Nolting
patent: 3718125 (1973-02-01), Posey
General Marine, Inc.
Moose Harry
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