Misfire-detecting system for internal combustion engines

Internal-combustion engines – High tension ignition system – Safety device

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Details

324388, 324399, F02P 1100, F02P 1700

Patent

active

052150674

ABSTRACT:
A misfire-detecting system detects a misfire occurring in an internal combustion engine. A value of sparking voltage after generation of an ignition command signal indicative of ignition timing is detected and compared with a predetermined voltage value, and it is determines based upon the results of the comparison whether or not a misfire has occurred in the engine. The determination as to occurrence of the misfire is based upon at least one of a time period over which the detected value of the sparking voltage exceeds the predetermined voltage value, and an area of a portion of detected values of the sparking voltage exceeding the predetermined voltage value.

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