Patent ID: 6868833
Filing Date: 2005-03-22
Classification: F02D

Abstract:
1. A method for defining the injection time in an injection system for an internal combustion engine, said method comprising: sensing a crankshaft signal representing the angular position of the crankshaft, determining the injection time as a function of the crankshaft signal, determining the phase angle of the crankshaft, sensing a camshaft signal representing the angular position of a camshaft, checking the camshaft signal for correctness, synchronizing the calculated injection time using the camshaft signal, if the camshaft signal is correct, wherein the correctness of the camshaft signal is checked via one of the checks selected from the group consisting of (i), (ii), and (iii), if the camshaft signal is incorrect, synchronizing the calculated injection time using the phase angle of the crankshaft, wherein the phase angle of the crankshaft is determined as a function of the crankshaft signal.