Crankshaft angular position detecting apparatus

Details Crankshaft angular position detecting apparatus Crankshaft angular position detecting apparatus

1990-11-16

1991-12-10

Raevis, Robert

Measuring and testing

Test stand

For engine

G01M 1500

Patent

active

050707272

ABSTRACT:
A crankshaft angular position detecting apparatus for detecting the angular position of the crankshaft of an internal combustion engine. The crankshaft drives a timing wheel which has a plurality of circumferentially spaced slots located along its outer periphery. Two angularly spaced sensors are located adjacent the slots. The sensors develop voltage pulses as the slots move past the sensors. Two phase-displaced pulse trains are developed, one by each sensor, as the wheel rotates. The pattern of slots and the angular spacing of the sensors is such that a varying number of pulses of one pulse train occurs between consecutively occurring pulses of the other pulse train. The varying number of pulses provide different patterns and each pattern is indicative of a crankshaft position. The timing wheel is secured to the engine crankshaft and is located inside of the engine.

REFERENCES:
patent: 4145608 (1979-03-01), Shirasaki et al.
patent: 4181884 (1980-01-01), Shirasaki et al.
patent: 4262526 (1981-04-01), Makita et al.
patent: 4471653 (1984-09-01), Kawamura et al.
patent: 4697125 (1987-09-01), Goff et al.
patent: 4988865 (1991-01-01), Schmidt et al.

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