Knocking detector of an internal combustion engine

Details Knocking detector of an internal combustion engine Knocking detector of an internal combustion engine

1981-04-29

1983-06-14

Gill, James J.

Measuring and testing

Engine detonation

Combustion signal compared to reference signal varied by a...

G01L 2322

Patent

active

043875882

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.

REFERENCES:
patent: 4002155 (1977-01-01), Harned et al.

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