Bumpless crankshaft position sensing

Details Bumpless crankshaft position sensing Bumpless crankshaft position sensing

G - Physics

01

D

G01D 5/244 (2006.01) F02P 7/067 (2006.01) G01M 15/00 (2006.01)

Patent

CA 2508005

Disclosed herein are methods of generating an active crank series of signals that is derived from at least two series of signals, wherein one or both of the series of signals have been modulated to produce two series of signals that resemble each other. Also disclosed herein is a crankshaft positioning system for determining the rotational position of a crankshaft of an engine that utilizes at least two crank angle sensors (10) and (12). The signal information from the two crank angle sensors (10) and (12) is processed by a signal processor (150) such that the series of signals (220) from the second crank angle sensor (12) emulates the series of signals (210) from the first crank angle processor (10). The signal processor generates an active crank series of signals (230) based on the two series of signals (210, 220). The active crank series of signals (230) is sent to an engine control processor (120) which directs the injection and/or ignition of fuel into cylinders of an engine. According to the system exemplified herein, the active crank series of signals (230) sent to the engine control processor (120) is not disrupted despite failure of one of the crank angle sensors. These and other embodiments are disclosed.

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