Capacitor discharge ignition system for internal combustion engi

Details Capacitor discharge ignition system for internal combustion engi Capacitor discharge ignition system for internal combustion engi

1983-08-17

1984-11-06

Cox, Ronald B.

Internal-combustion engines

High tension ignition system

Using capacitive storage and discharge for spark energy

123605, 123418, F02P 100

Patent

active

044806248

ABSTRACT:
The capacitor discharge ignition system for an internal combustion engine includes an ignition capacitor charged by a power supply and discharged through the primary of an ignition coil when a silicon controlled rectifier (SCR) becomes conductive in response to a trigger voltage is applied to the gate of the SCR. A resistor-capacitor delay circuit on the output of the SCR delays rapid discharge of the capacitor to thereby delay the spark at the spark plug in the secondary of the coil. A second SCR is connected to shunt the RC time delay to effectively advance the spark timing in response to predetermined engine speed.

REFERENCES:
patent: 4377997 (1983-03-01), Staerti
patent: 4391236 (1983-07-01), Anderson
patent: 4413608 (1983-11-01), Beeghly

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