Ignition system for internal combustion engines

Details Ignition system for internal combustion engines Ignition system for internal combustion engines

1980-10-31

1982-11-30

Myhre, Charles J.

Internal-combustion engines

High tension ignition system

Having an ignition coil with multiple primary or secondary...

123651, 123655, 315209T, F02P 304

Patent

active

043611290

ABSTRACT:
A contactless ignition system for internal combustion engines of the type including an ignition coil with two primary windings whose primary currents are alternately switched on and off by two power transistors, further includes two Zener diodes each having a breakdown voltage of 300 to 400 volts and connected in series with one of the power transistors and one of the ignition coil primary windings to function as a reverse current blocking diode. By virtue of two series circuits each including the Zener diode, a diode connected in inverse parallel with one of the power transistors and the primary winding, each of the Zener diodes serves both the reverse current blocking function and the overvoltage protection function. The Zener diodes may be replaced with diodes of the avalance type.

REFERENCES:
patent: 3016477 (1962-01-01), Naborowski
patent: 3910247 (1975-10-01), Hartig
patent: 4167928 (1979-09-01), Pagel
patent: 4262647 (1981-04-01), Torii et al.

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