Patent ID: 7000598
Filing Date: 2006-02-21
Classification: F02B,F02D

Abstract:
1. For use with an internal combustion engine comprising a crankshaft and a rotating member operationally coupled thereto, a method of generating a continuous stream of signals useful for determining crankshaft position, said continuous stream of signals derived from a first series of signals from a first crank positioning sensor and a second series of signals from a second crank positioning sensor, said method comprising: modulating said second series of signals to produce a modulated series of signals that resembles said first series of signals, thereby producing two series of signals that resemble each other; and generating a signal stream based on wherein said modulated series of signals resembles said first series of signals such that a continuous stream of signals is generated that persists in the event of operational failure of one of said first and second crank positioning sensors without needing to switchover from said first series of signals to said modulated series of signals, or vice versa.