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Crankshaft position sensing with combined starter alternator

United States Patent

6,073,713
June 13, 2000
View the Complete Patent at the US Patent & Trademark Office
National Renewable Energy Laboratory - Visit the NREL Technology Transfer Website
A crankshaft position sensing apparatus for use with an engine (16) having a combined starter/alternator assembly (18). The crankshaft position sensing apparatus includes a tone ring (38) with a sensor (36) and bandpass filter (46), having a cylinder identification input from a camshaft sensor (48), and a gain limiter (54). The sensing apparatus mounts near the rotor (30) of the combined starter/alternator assembly (18). The filtered crankshaft position signal can then be input into a vehicle system controller (58) and an inner loop controller (60). The starter/alternator assembly (18) in combination with an internal combustion engine is particularly useful for a hybrid electric vehicle system.
Brandenburg; Larry Raymond (Plymouth, MI), Miller; John Michael (Saline, MI)
Ford Global Technologies, Inc. (Dearborn, MI)
09/ 048,170
March 25, 1998
This invention was made with Government support under Prime Contract No. DE-AC-36-83CH10093, Subcontract No. ZCB-4-13032-02, awarded by the Department of Energy. The Government has certain rights in this invention.