Patent ID: 7257983

Claim:
A method for correcting a position of angle marks of an incremental gear of at least one of a rotary speed sensor and a rotary angle sensor of an internal combustion engine, comprising: recording positions of the angle marks using the at least one of the rotary speed sensor and the rotational angle sensor; measuring combustion chamber pressure values in respective cylinders of the internal combustion engine to produce measured cylinder pressure values; assigning the measured cylinder pressure values to the recorded angle mark positions; selectively correcting the measured cylinder pressure values in a signal-conditioning device; storing the recorded angle mark positions with the appertaining, measured cylinder pressure values in a measured value table; storing ideal pressure values that are derived at ideal angle mark positions in a reference table; comparing the measured cylinder pressure values to the ideal pressure values; determining deviations of the measured angle mark positions from the ideal angle mark positions at the corresponding measured cylinder pressure values in an evaluation unit; and correcting the measured angle mark positions by the determined deviations.