Internal-combustion engines – Combustion chamber means combined with air-fuel mixture...
Patent
1992-12-08
1993-09-07
Nelli, Raymond A.
Internal-combustion engines
Combustion chamber means combined with air-fuel mixture...
123419, 123630, F02P 514
Patent
active
052419371
ABSTRACT:
A misfire-detecting system detects a misfire occurring in an internal combustion engine. A value of sparking voltage for discharging a spark plug of the engine is detected. The detected value of the sparking voltage is compared with a first predetermined value. A degree to which the detected value of the sparking voltage exceeds the first predetermined value is measured. The measured degree is compared with a second predetermined value. It is determined based upon results of the latter comparison whether or not a misfire occurred in the engine. According to a first aspect of the invention, the second predetermined reference value is set based upon detected values of operating parameters of the engine. According to a second aspect of the invention, the determination of occurrence of a misfire is inhibited when the engine is in a predetermined operating condition.
REFERENCES:
patent: 4558280 (1985-12-01), Koehl et al.
patent: 5140962 (1992-08-01), Iwata
patent: 5146893 (1992-09-01), Osawa
patent: 5180984 (1993-01-01), Murata et al.
patent: 5188080 (1993-02-01), Sakakibara et al.
patent: 5190011 (1993-03-01), Hoshiondo et al.
Akiyama Eitetsu
Baba Shigeki
Chikamatsu Masataka
Hisaki Takashi
Ishioka Takuji
Honda Giken Kogyo Kabushiki Kaisha
Nelli Raymond A.
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