Capacitor discharge ignition method and system

Details Capacitor discharge ignition method and system Capacitor discharge ignition method and system

F - Mech Eng,Light,Heat,Weapons

02

P

317/5.4

F02P 3/04 (2006.01) F02P 1/08 (2006.01) F02P 3/08 (2006.01)

Patent

CA 1078915

ABSTRACT OF THE DISCLOSURE A capacitor discharge ignition system employs charge and shut- off coils disposed about a common magnetic core. Shut-off may be a- chieved by selecting grounding an end of the trigger coil or the shut- off coil into the circuit which achieves the additional effect of loading the charge coil to protect the ignition capacitor. One circuit embodiment provides force commutation of the electronic switch, compensation for variations in temperature, inhibition of extraneous triggering of the electronic swithch and selective system shut-off. Extraneous triggering may be inhibited by the biasing of the electronic switch as a function of the polarity of the waveforms as well as by the damping of the transient which occurs at the end of the charge of the ignition capacitor. Gate protection for the electronic switch is provided by the clamping of the cathode to gate potential.

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