Engine knocking detecting means
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United States of America Patent
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Nov 12, 1985
Grant Date -
N/A
app pub date -
Jul 18, 1983
filing date -
Jul 20, 1982
priority date (Note) -
Expired
status (Latency Note)
Importance
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.
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