Misfire detection

Details Misfire detection Misfire detection

1991-02-11

1992-06-30

Nelli, Raymond A.

Internal-combustion engines

Combustion chamber means combined with air-fuel mixture...

73116, 123435, 123494, F02P 514

Patent

active

051253810

ABSTRACT:
An engine misfire detector comprises an opto-electric sensor for monitoring light produced by combustion inside a cylinder. The sensor is connected to a variable gain amplifier having a gain control circuit for controlling the amplifier gain. The output of the gain control circuit is compared with a threshold in a comparator to provide a misfire detection signal. The transfer function of the gain control circuit includes an integral term.

REFERENCES:
patent: 4444043 (1984-04-01), Hattori et al.
patent: 4887574 (1989-12-01), Kuroiwa et al.
patent: 4891970 (1990-01-01), Ramboski
patent: 4971010 (1990-11-01), Iwata
patent: 5005549 (1991-04-01), Porpeintnor et al.
patent: 5058551 (1991-10-01), Nakaniwa

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