Engine knock sensing apparatus

Details Engine knock sensing apparatus Engine knock sensing apparatus

1981-12-28

1984-01-10

Gill, James J.

Measuring and testing

Engine detonation

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

73728, G01L 2322

Patent

active

044247052

ABSTRACT:
A knocking sensing apparatus for sensing a knocking taking place in an internal combustion engine. The apparatus includes a diaphragm adapted to operate in response to the pressure of cooling water circulated in the engine, magnetism generating device, magnetic circuit including the diaphragm, and a magnetic flux detecting device adapted to detect in a manner like alternating current the change in the magnetic flux in the magnetic circuit caused by the operation of the diaphragm.

REFERENCES:
patent: 2403774 (1946-07-01), Whitty et al.
patent: 2641719 (1953-06-01), Adams
patent: 4266421 (1981-05-01), McDougal
patent: 4299117 (1981-11-01), Andrews et al.

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