Misfire-detecting system for internal combustion engines

Details Misfire-detecting system for internal combustion engines Misfire-detecting system for internal combustion engines

1993-03-05

1994-11-22

Okonsky, David A.

Internal-combustion engines

Spark ignition timing control

Electronic control

F02P 1700

Patent

active

053659058

ABSTRACT:
A misfire-detecting system for an internal combustion engine in which a value of sparking voltage is detected, which is generated across a spare plug when high voltage is generated by an ignition device in response to generation of an ignition command signal. When a time period over which the detected value of sparking voltage exceeds a predetermined reference voltage value exceeds a predetermined time period value, the system determines that a misfire has occurred in the engine. A recharging command signal is generated for applying high voltage to the spark plug, after generation of the ignition command signal. As a result, a misfire can be accurately detected.

REFERENCES:
patent: 4886029 (1989-12-01), Lill et al.
patent: 4913123 (1990-04-01), DeBiasi et al.
patent: 5215067 (1993-06-01), Shimasaki et al.
patent: 5221904 (1993-06-01), Shimasaki et al.
patent: 5226394 (1993-07-01), Shimasaki et al.
patent: 5241937 (1993-09-01), Kanehiro et al.
patent: 5303158 (1994-04-01), Kuroda

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