Engine knocking detecting means

Details Engine knocking detecting means Engine knocking detecting means

1983-07-18

1985-11-12

Nelli, Raymond A.

Internal-combustion engines

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

123435, 123571, 123419, F02P 514, F02D 504, G01I 2322

Patent

active

045521115

ABSTRACT:
An engine knocking detecting device comprising an engine vibration sensor for sensing engine vibrations and producing electric signals representing the engine vibrations, a knocking detecting circuit including a knocking signal discriminating circuit such as a band pass filter for detecting signals representing engine vibrations caused by engine knocking and a knocking intensity detecting circuit for detecting durations of the signals representing the engine knocking vibrations to thereby detect intensity of the engine knocking. The knocking intensity detecting circuit may include a comparator for comparing the signal which have passed through the band pass filter with a reference value which may be varied in accordance with noise and producing an output when the signal from the filter means is greater than the reference value.

REFERENCES:
patent: 4344400 (1982-08-01), Asano
patent: 4346586 (1982-08-01), Furrey
patent: 4356551 (1982-10-01), Iwase et al.
patent: 4385607 (1983-05-01), Honiden et al.
patent: 4393837 (1983-07-01), Sugihara et al.
patent: 4417556 (1983-11-01), Latsch
patent: 4448163 (1984-05-01), Yoshida

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