Patent ID: 7958856

Claim:
An adjusting device for adjusting a camshaft ( 12 ) of an internal combustion engine, including an adjusting unit ( 10 ) for adjusting a phase angle of the camshaft ( 12 ) relative to a camshaft drive, a control means ( 13 ) axially movably disposed in the adjusting unit ( 10 ) for controlling the phase angle position of the camshaft relative to the camshaft drive, an actuator ( 26 ) for actuating the control means ( 13 ) and a sensor unit ( 11 ) arranged operatively between the actuator ( 26 ) and the control means ( 13 ) for operating the control means ( 13 ) upon failure of the actuator ( 26 ), said sensor unit ( 11 ) including a sensor unit ( 14 ) disposed adjacent the control means ( 13 ) and connected to the camshaft ( 12 ) for rotation therewith and a scanning structure ( 25 ) arranged adjacent the sensor unit ( 14 ) and in engagement with the camshaft drive for rotation therewith so as to actuate, upon failure of the actuator ( 16 ), the control means ( 13 ) depending on the position of the sensor unit ( 14 ) relative to the scanning structure ( 25 ).