Engine controller equipped with knocking detector

Details Engine controller equipped with knocking detector Engine controller equipped with knocking detector

1990-04-13

1991-02-12

Argenbright, Tony M.

Internal-combustion engines

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

73 35, 36443108, F02P 515

Patent

active

049915533

ABSTRACT:
An engine controller equipped with a device for judging occurrence of knocking of the engine, having a sensor for sampling a vibration based on an internal pressure vibration arisen in a cylinder of the engine and a knocking detecting means for judging the occurrence of the knocking by obtaining at least two frequencies contained in an output from the sensor, obtaining a knocking judgement index from two vibration power factors corresponding to the two frequencies and comparing the knocking judgement index with a threshold value. As being judged from the knocking judgement index, the occurrence of the knocking is accurately detected when the background vibration is great at the time of the high load high speed operation.

REFERENCES:
patent: 4316440 (1982-02-01), Yamaguchi et al.
patent: 4337641 (1982-07-01), Sugihara et al.
patent: 4341189 (1982-07-01), Yamaguchi et al.
patent: 4345558 (1982-08-01), Yamaguchi et al.
patent: 4356551 (1982-10-01), Iwase et al.
patent: 4465047 (1984-08-01), Yamaguchi et al.

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