Patent ID: 6176123
Filing Date: 2001-01-23
Classification: F02D,F02N,G01M,G01P

Abstract:
An apparatus for continuously detecting a rotation angle in a specific range of a crankshaft of an engine, said engine having a piston reciprocating between a top dead center and bottom dead center, comprising:a ring gear having teeth and coupled with said crankshaft,a starter motor for rotating said ring gear,a starter pinion coupled with said motor, said pinion having teeth to be engaged with said ring gear teeth when starting up said engine,a magnetic sensor for outputting a signal according to the passing of teeth in a specific range of said ring gear, said specific range being set so as not to overlap with a wear region of said ring gear teeth which is worn due to engagement with said pinion, andmeans for detecting a rotation angle of said crankshaft based on said signal.