Rotation angle sensor for internal combustion engine having rota

Details Rotation angle sensor for internal combustion engine having rota Rotation angle sensor for internal combustion engine having rota

1993-09-17

1996-06-18

Snow, Walter E.

Electricity: measuring and testing

Magnetic

Displacement

32420725, 123414, G01B 700, G01B 730, F02P 500, G01R 33025

Patent

active

055281400

ABSTRACT:
A rotation angle sensor has a cylindrical rotating member attached to a cam shaft of an internal combustion engine for rotation therewith, and a pickup. The rotating member has a portion formed on its inner peripheral surface for detection of a crank angle. The pickup has a column-shaped support portion and is attached coaxially with the rotating member with the support portion rotatably inserted into a hole which is formed in a casing of the internal combustion engine. A detecting portion provided at a distal end of the support portion is positioned inside the rotating member to detect a position of the crank angle detection portion during rotation of the rotating member and output a signal. The pickup further has an arc-shaped elongate hole which is formed to extend about a central axis of the support portion, so that the pickup is fixed to the casing of the internal combustion engine with a bolt inserted through the elongate hole. The pickup, by loosening the bolt, is easily turned to change its angular position with respect to the rotating member. Thus, ignition timing of the internal combustion engine, which is controlled based on the signal from the rotation angle sensor, can be easily adjusted and the structure for the adjustment is simple and inexpensive.

REFERENCES:
patent: 4089316 (1978-05-01), Padgitt
patent: 4531090 (1985-07-01), Hill
patent: 4628891 (1986-12-01), Asai et al.
patent: 5027067 (1991-06-01), Witzig et al.
patent: 5131366 (1992-07-01), Rawlings et al.

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