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),...http://www.google.com/patents/US6073713?utm_source=gb-gplus-sharePatent US6073713 - Crankshaft position sensing with combined starter alternator
