Rotational speed detector for an internal combustion engine comp

Details Rotational speed detector for an internal combustion engine comp Rotational speed detector for an internal combustion engine comp

1990-12-19

1991-11-19

Wieder, Kenneth A.

Electricity: measuring and testing

Electrical speed measuring

Including speed-related frequency generator

324170, 324174, G01P 3487

Patent

active

050669109

ABSTRACT:
A rotational speed detector for an internal combustion engine comprises a waveform processor for eliminating pulses generated within a predetermined period of time after a certain pulse appears and a measuring circuit for measuring a rotational speed based on outputs from the waveform processor. The waveform processor of the rotational speed detector thus eliminates the effects of such an unexpected pulse generated, for example, by the vibration of the ignition coil for the engine. Consequently, the measuring means detects the rotational speed accurately without measuring the unexpected pulse.

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