Knocking detector of an internal combustion engine
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United States of America Patent
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-
Jun 14, 1983
Grant Date -
N/A
app pub date -
Apr 29, 1981
filing date -
May 19, 1980
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A knocking detector compares an output of a knocking sensor with a reference level derived by integrating and amplifying the output of the knocking sensor to produce a knocking signal. An amplification factor of the amplifier is changed between a low engine rotation speed region and a high engine rotation speed region such that the amplification factor is lower than that at low engine rotational speeds. As a result, the ability to detect knocking is not lowered at high engine rotational speeds so that knocking can be properly detected under all running conditions.
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