Ignition system having ignition coil

Details Ignition system having ignition coil Ignition system having ignition coil

1997-12-11

2000-03-07

Kwon, John

Internal-combustion engines

High tension ignition system

Power supply, ignition coil primary, and interrupter element...

123656, F02P 100

Patent

active

060326581

ABSTRACT:
An ignition system includes an ignition coil which provides ignition voltage of one polarity, an igniter which supplies the primary current to the ignition coil at regular timings and a zener diode connected in series with the primary coil of the ignition coil. The zener diode shares a constant voltage drop of the opposite polarity at the secondary coil of the ignition coil, thereby reducing troublesome voltage induced in the secondary coil other than at regular ignition timings. On the other hand, the zener diode does not share the voltage drop of the ignition voltage at the regular timings, and thus no energy loss is incurred.

REFERENCES:
patent: 4556040 (1985-12-01), Heyke
patent: 4653460 (1987-03-01), Ooyabu et al.
patent: 5377653 (1995-01-01), Hamada et al.
patent: 5594616 (1997-01-01), Bretch et al.

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