Patent ID: 6288534
Filing Date: 2001-09-11
Classification: F02D

Abstract:
A throttle assembly having a throttle valve position sensor for use with a throttle control valve having a throttle valve shaft rotatably supported in a throttle housing and positionable by a control motor through a geared transmission, the throttle assembly comprising:a) a gear, fixed to the throttle valve shaft;b) a first tapered magnet mounted to the gear and extending perpendicularly to the shaft;c) a second tapered magnet extending parallel to and spaced from the gear and the first magnet and coupled to the shaft; andd) a flux density sensor, located between the first and second tapered magnets, for sensing a flux density indicative of a rorational position of the first and second tapered magnets in response to the throttle valve shaft rotation, the first and second tapered magnets adapted to create a variable magnetic field, the magnitude of the variable magnetic field being proportional to the rotational position of the gear.