Ignition misfire detector

Details Ignition misfire detector Ignition misfire detector

1988-05-26

1989-12-12

Wolfe, Willis R.

Internal-combustion engines

Charge forming device

Fuel injection system

123630, 731173, 324380, F02P 1106, F02D 4122

Patent

active

048860298

ABSTRACT:
A technique for detecting misfire due to a fault in the secondary of an automotive ignition system compares the ignition signal developed by the ignition coil, preferably the primary winding thereof, to reference signals. Abnormal results which occur at predetermined times subsequent to the initiation of the ignition signal indicate short circuit and/or open circuit conditions in the ignition system's secondary. In response to such fault conditions, fuel is preferably shut off to the cylinder associated with the misfire.

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