Oil pressure detecting apparatus for internal combustion engines

Details Oil pressure detecting apparatus for internal combustion engines Oil pressure detecting apparatus for internal combustion engines

1976-03-31

1977-11-22

Lazarus, Ronald H.

Internal-combustion engines

Lubricators

Crankcase, pressure control

123196R, 184 64, 184 65, F01M 100, F01M 104

Patent

active

040590879

ABSTRACT:
An oil pressure detecting apparatus for an internal combustion engine comprises an LC oscillator having an inductance variable in dependence upon variation in the oil pressure of the engine. The frequency or voltage of an output signal of the oscillator is compared with that of a reference signal having a predetermined relation to the number of revolutions of the engine, thereby to determine if the oil pressure is within an acceptable range.

REFERENCES:
patent: 2499319 (1950-02-01), Lillquist
patent: 3561565 (1971-02-01), Woor

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