Patent ID: 7541803
Filing Date: 2009-06-02
Classification: F01L

Abstract:
1. Device for determining an angle of rotation Δφ between a camshaft ( 5 ) and the crankshaft of an internal combustion engine, comprising a camshaft regulator and means for determining the angle of rotation position of the camshaft ( 5 ) and the crankshaft, a crankshaft trigger wheel with reference and trigger marks is fixed to the crankshaft for determining the angle of rotation position of the crankshaft and a triple-shaft gearbox ( 1 ), having a first shaft ( 3 ) that is locked in rotation with the camshaft ( 5 ), a second shaft ( 4 ) that is connected via a camshaft driving wheel ( 7 ) to the crankshaft, and a third shaft as a regulating shaft ( 6 ) that is connected to a permanent magnet rotor ( 8 ) of a BLDC motor ( 2 ), wherein the BLDC motor ( 2 ) has a housing-fixed stator ( 9 ) and an electronic commutation, which is controlled through commutation signals, which are used simultaneously for determining an angle of rotation position of the camshaft ( 5 ) and together with signals of the crankshaft trigger wheel for calculating the angle of rotation Δφ between camshaft ( 5 ) and crankshaft.