Patent ID: 7451730
Filing Date: 2008-11-18
Classification: F01L

Abstract:
1. A method for setting the rotary-angle position of the camshaft of a reciprocating piston internal combustion engine relative to the crankshaft, wherein the crankshaft has a drive connection to the camshaft via an adjusting gear which is embodied as a triple shaft gear with a drive shaft which is fixed to the crankshaft, an output shaft which is fixed to the camshaft and an adjusting shaft, wherein a phase angle signal (ε act ) for the rotary-angle position the camshaft relative to the crankshaft is registered, wherein travel up to a stop is carried out during which a stop element which is connected to the drive shaft is moved towards a counterstop element which is connected to the camshaft, while the adoption of a stop position is monitored, wherein, when the stop position is detected, a stop phase angle value (ε stop ) is determined, and wherein a setpoint phase angle signal (ε setp ) is made available and the phase angle signal (ε act ) is adjusted to the setpoint phase angle signal (ε setp ), wherein the stop phase angle value (ε stop ) is assigned an adjacent or neighbouring phase angle range and the phase angle signal (ε act ) is compared with the phase angle range, and that if the setpoint phase angle signal (ε setp ) is within the phase angle range, the adjustment of the phase angle signal (ε act ) to the setpoint phase angle signal (ε setp ) is interrupted and further travel up to a stop is carried out during which the stop element is moved towards the counterstop element while the adoption of the stop position is monitored, wherein, when the stop position is detected the stop phase angle value (ε stop ) is determined again, and wherein the adjustment of the phase angle signal (ε act ) to the setpoint phase angle signal (ε setp ) is then continued.