초록 ▼

A method of sensing crankshaft position for use with an engine (16) having a combined starter/alternator assembly (18). The crankshaft position sensor assembly includes a tone ring (38) with a sensor (36), mounted near the rotor (30) of the combined starter/alternator assembly (18), that produces an

A method of sensing crankshaft position for use with an engine (16) having a combined starter/alternator assembly (18). The crankshaft position sensor assembly includes a tone ring (38) with a sensor (36), mounted near the rotor (30) of the combined starter/alternator assembly (18), that produces an initial crankshaft position signal. A bandpass filter (46) receives this initial signal and a cylinder identification input from a camshaft sensor (48) and filters the initial signal. Then, a gain limiter (54) performs an additional filtering process to produce a crankshaft rotational position signal. The filtered crankshaft position signal can then be input into a vehicle system controller (58) and an inner loop controller (60).

대표청구항 ▼

1. A method for minimizing electromagnetic interference in an output of a crankshaft position sensor of an internal combustion engine, the internal combustion engine having a camshaft and a combined starter/alternator assembly, the starter/alternator assembly having a stator, a rotor selectively cou

1. A method for minimizing electromagnetic interference in an output of a crankshaft position sensor of an internal combustion engine, the internal combustion engine having a camshaft and a combined starter/alternator assembly, the starter/alternator assembly having a stator, a rotor selectively coupled to the crankshaft via a clutch assembly, and a tone wheel affixed to the rotor, the method comprising:coupling the rotor to the crankshaft; rotating the crankshaft and thus the rotor and tone wheel affixed thereto; using the crankshaft position sensor to detect rotation of the tone wheel and to generate an initial crankshaft position signal; rotating the camshaft; sensing the rotational position of the camshaft to generate a camshaft rotational position signal; and filtering the initial crankshaft position signal based upon the camshaft rotational position signal to produce a crankshaft position sensor output having minimized electromagnetic interference.