Internal-combustion engines – Spark ignition timing control – Electronic control
Patent
1992-12-22
1994-06-21
Dolinar, Andrew M.
Internal-combustion engines
Spark ignition timing control
Electronic control
123479, 324388, 324399, F02P 1700
Patent
active
053220455
ABSTRACT:
A misfire-detecting system for an internal combustion engine detects values of operating parameters of the engine, determines ignition timing of the engine, based upon detected values of operating parameters of the engine to generate an ignition command signal indicative of the determined ignition timing, generates high voltage for causing generation of sparking voltage across a spark plug for discharging the spark plug, according to the ignition command signal, detects a value of the sparking voltage generated across the spark plug when the high voltage is generated, compares the detected value of the sparking voltage with a predetermined reference value, and determines whether or not a misfire has occurred in the engine, based upon results of the comparison. It is determined that the system is abnormal, when it is determined that no misfire has occurred while fuel supply to the engine is being interrupted.
REFERENCES:
patent: 4928228 (1990-05-01), Fujimoto et al.
patent: 5215067 (1993-06-01), Shimasaki et al.
patent: 5237279 (1993-08-01), Shimasaki et al.
patent: 5241937 (1993-09-01), Kanehiro et al.
Baba Shigeki
Chikamatsu Masataka
Hisaki Takashi
Ishioka Takuji
Kakimoto Kazuhito
Dolinar Andrew M.
Honda Giken Kogyo Kabushiki Kaisha
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