Knocking detection system for internal combustion engine

Details Knocking detection system for internal combustion engine Knocking detection system for internal combustion engine

1983-09-20

1986-10-14

Levy, Stewart J.

Measuring and testing

Engine detonation

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

G01L 2322

Patent

active

046165029

ABSTRACT:
In a knocking detection system for an internal combustion engine, a knocking is detected by a vibration sensor the output level of which is changed by controlling the sensor excitation current. The excitation current is controlled in dependence upon the output of the sensor, engine speed or load conditions or the like so that the output noise level of the sensor is maintained substantially constant regardless of engine operating conditions.

REFERENCES:
patent: 4153020 (1979-05-01), King et al.
patent: 4312214 (1982-01-01), Kramer et al.
patent: 4333334 (1982-06-01), Nakajima et al.
patent: 4379403 (1983-04-01), Hattori et al.

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