RPM Detection system for internal combustion engine

Details RPM Detection system for internal combustion engine RPM Detection system for internal combustion engine

1980-09-29

1983-02-01

Krawczewicz, Stanley T.

Electricity: measuring and testing

Electrical speed measuring

Including speed-related frequency generator

73116, G01P 348

Patent

active

043718353

ABSTRACT:
An internal combustion engine rpm detection system, which detects the rpm of an automotive internal combustion engine, comprises a magnetic sensor section for forcibly magnetizing a valve rocker arm in the neighborhood of an oil inlet formed in a cylinder head cover of the internal combustion engine and for detecting the magnetic field changes in the valve rocker arm accompanying the motion thereof. A processing section supplies a drive signal to said magnetic sensor section and converts the output of said magnetic sensor section representing magnetic field changes accompanying the rocking motion of the valve rocker arm into a pulse signal. The magnetic sensor section and processing section are removably mounted as an integral unit in the oil inlet of the engine.

REFERENCES:
patent: 4266192 (1981-05-01), Ohtani
patent: 4292670 (1981-09-01), Reid et al.

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