Electronic pinking detector

Details Electronic pinking detector Electronic pinking detector

1979-12-26

1981-07-21

Gill, James J.

Measuring and testing

Engine detonation

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

123425, G01L 2322, F02P 514

Patent

active

042791430

ABSTRACT:
An electronic device for detecting and correcting pinking in an internal combustion engine by changing the ignition displacement of the internal combustion engine which comprises a vibration pick-up mounted on the internal combustion engine providing a signal to a band-pass filter for selecting a frequency band corresponding to pinking vibrations and a comparator, the output of which provides a signal for altering the ignition displacement of the engine and the two inputs which receive the output from the band-pass filter after it has undergone different treatments in two parallel channels, one channel comprising an integrator followed by an amplifier and the second channel preferably comprising an integrator, therebeing provided a gate between the band-pass filter and the two channels, which gate is only open for a predetermined angular zone during operation of the internal combustion engine.

REFERENCES:
patent: 3950981 (1976-04-01), Arrigoni et al.
patent: 4002155 (1977-01-01), Harned et al.

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