Position transducer for an internal combustion engine function c

Electricity: measuring and testing – Magnetic – Displacement

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324232, 123617, G01B 714, F02P 508

Patent

active

045310904

ABSTRACT:
An ignition system transducer comprising a ferro-magnetic disc mounted on a distributor shaft and having four pairs of protuberances, the spacing of the two protuberances of each pair corresponding to the maximum and minimum spark advance positions. Rotation of the protuberances about the distributor shaft is detected by a first variable reluctance pick-up mounted in a fixed position, and by a second variable reluctance pickup movable in accordance with an engine load sensor. These two pick-ups in conjunction with signal generators produced a fixed phase waveform, and a variable phase waveform which varies in accordance with engine load.

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