Electronically controlled ignition system

Details Electronically controlled ignition system Electronically controlled ignition system

1982-09-02

1985-04-09

Cox, Ronald B.

Internal-combustion engines

Charge forming device

Fuel injection system

123415, F02P 504

Patent

active

045094829

ABSTRACT:
The invention relates to an electronically controlled ignition system in which a correction signal is obtained from a control signal derived directly from an ignition pulse sensor. The invention consists of producing a saw-tooth signal with a rising flank and a falling flank within one cycle of the square wave control signal, using only one flank of the said control signal. The ratio or relationship between the gradients of the two flanks is a measure of the change in the corrected signal relative to the control signal. The electronically controlled ignition system is particularly suitable for compensating for the ignition advance, caused by an induction sensor, as compared to the mechanical position of the rotor at low engine speeds.

REFERENCES:
patent: 4125097 (1978-11-01), Gunderson
patent: 4142490 (1979-03-01), Hosaka
patent: 4201163 (1980-05-01), Hattori
patent: 4245600 (1981-01-01), Katada

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