Method and device for checking an operating condition of an inte

Details Method and device for checking an operating condition of an inte Method and device for checking an operating condition of an inte

1982-01-29

1984-11-20

Gill, James J.

Measuring and testing

Engine detonation

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

G01L 2322

Patent

active

044831803

ABSTRACT:
A device for detecting knocking in individual cylinders of a multicylinder engines comprises a movable vibration sensor, an ignition pulse detector, a control circuit and a control console. The ignition pulse detector is a clip for the ignition cable of the specified which can detect propagation of the high-voltage ignition signal therethrough without damage the insulation. The signal from the vibration sensor is checked for a threshold amplitude at a frequency indicative of knocking. If the threshold is exceeded and the ignition detector simultaneously detects an ignition pulse for the specified cylinder, the control circuit outputs a signal to operate an indicator on the console. The console also includes a selector for adjusting the knocking amplitude threshold.

REFERENCES:
patent: 2534276 (1950-12-01), Lancor
patent: 2867766 (1959-01-01), Broder et al.
patent: 2879665 (1959-03-01), Adams
patent: 3218843 (1965-11-01), Lindsey
patent: 3504533 (1970-04-01), Rodewalt
patent: 4249494 (1981-02-01), Guipaud

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