Ignition control system for internal combustion engine

Details Ignition control system for internal combustion engine Ignition control system for internal combustion engine

1987-01-27

1988-01-12

Wolfe, Willis R.

Internal-combustion engines

High tension ignition system

Having engine component position sensor

123414, 123630, F02P 1100

Patent

active

047183950

ABSTRACT:
An ignition control system for an internal combustion engine has an oscillator for generating a clock signal, ignition timing signal generator means for generating an ignition timing signal synchronized with the ignition timing of the engine, a defect detector for detecting the defect of the oscillator, a control circuit for calculating the energizing timing of an ignition coil from the ignition timing signal when the oscillator is normal, and a switching circuit for disconnecting the output of the control circuit when the oscillator is defective to lead the ignition timing signal to an igniter, thereby switching the switching circuit to the output side of the control circuit by the output of the defect detector when the oscillator is normal to calculate the energizing timing of the ignition coil by the control circuit from the ignition timing signal to lead it to the igniter, and thereby switching the switching circuit by the defect detector when the oscillator is defective to lead the ignition timing signal directly to the igniter.

REFERENCES:
patent: 4109630 (1978-08-01), Richeson, Jr. et al.
patent: 4531490 (1985-07-01), Kishi et al.
patent: 4561411 (1985-12-01), Masuno
patent: 4597373 (1986-07-01), Andreasson
patent: 4658786 (1987-04-01), Foss et al.

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