Adjustable rotary position sensor for electronic spark timing co

Details Adjustable rotary position sensor for electronic spark timing co Adjustable rotary position sensor for electronic spark timing co

1976-04-05

1978-05-16

Myhre, Charles J.

Internal-combustion engines

Igniters

Sparkers

324 16T, 338 32H, F02P 100

Patent

active

040893162

ABSTRACT:
An improved adjustable rotary position sensor assembly is disclosed which is adaptable for sensing the rotational position of a body being synchronously rotated by an engine crankshaft and producing spark timing signals for the engine in response to the rotational position of the body. A generally cylindrically shaped Hall sensor probe is mounted through a cylindrical bore in an engine block and positioned such that one end of the sensor probe will be adjacent to radially extending portions of the rotary body during the rotation of the body by the engine. The Hall probe is rotatably adjustable with respect to the central axis of its cylindrically shaped body. A slotted mounting flange is attached to one end of the Hall probe and together with a retaining screw provides for locking the probe into a fixed rotational position with respect to its central axis after it has been adjusted. The Hall probe has an active sensing area located at one end of the probe for sensing when the rotary body has an extending portion directly adjacent to the active sensing area. The active sensing area is disposed substantially away from the central axis of rotation of the Hall probe and this enables the rotational position of the active sensing area, with respect to the axis of rotation of the rotary body, to be adjusted by rotating the Hall probe in its cylindrical bore with respect to its central axis of rotation. Thus a simplified mechanically adjustable rotary position sensor assembly has been provided which is adaptable for use in an electronic spark timing ignition system.

REFERENCES:
patent: 2263859 (1941-11-01), Eldredge
patent: 3198973 (1965-08-01), Short
patent: 3575150 (1971-04-01), Habert
patent: 3776206 (1973-12-01), Hunt
patent: 3861225 (1975-01-01), Mattson
patent: 3883795 (1975-05-01), Klein
patent: 3906920 (1975-09-01), Hemphill
patent: 3939397 (1976-02-01), Maisonville

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