Patent ID: 6732709
Filing Date: 2004-05-11
Classification: F02D,Y02T

Abstract:
A method for controlling timing of an internal combustion engine having a piston located in a cylinder, the piston being drivably connected to a crankshaft, including the steps of:determining a first angular position of the crankshaft at a first location along a longitudinal axis of the crankshaft; determining a second angular position of the crankshaft at a second location along the longitudinal axis; determining a level of deformation of the crankshaft as a function of a difference between the first and second angular positions; determining an actual position of the piston as a function of the crankshaft deformation; comparing the actual piston position to a desired piston position; and controlling timing of an event to initiate combustion in the cylinder as a function of a difference between the actual and desired piston positions.