Abstract: A camshaft adjusting device, including a vane cell adjuster having a stator connectable to a crankshaft and a rotor, which is rotatably supported in the stator and connectable to a camshaft. Webs on the stator, divide an annular space between the stator and the rotor into pressure chambers, wherein the rotor has a rotor hub and vanes extending radially outward from the rotor hub, which vanes divide the pressure chambers into two groups of working chambers having a different acting direction, into each of which working chambers pressure medium flowing in or out in a pressure-medium circuit can be admitted, and a central locking device for locking the rotor in relation to the stator.

Abstract: A camshaft adjusting device, including a vane cell adjuster having a stator connectable to a crankshaft and a rotor, which is rotatably supported in the stator and connectable to a camshaft. Webs on the stator, divide an annular space between the stator and the rotor into pressure chambers, wherein the rotor has a rotor hub and vanes extending radially outward from the rotor hub, which vanes divide the pressure chambers into two groups of working chambers having a different acting direction, into each of which working chambers pressure medium flowing in or out in a pressure-medium circuit can be admitted, and a central locking device for locking the rotor in relation to the stator.

Abstract: A camshaft phaser having a vane-type phaser having a central-position locking device having locking pins lockable in a locking slot stationary with respect to the stator and locking in the locking slot from different directions. A locking pin has a blocking portion and a flow-through pressure medium conduit, by which a fluid connection between two working chambers of different directions of action can be established or blocked in the different positions of the first locking pin. The working chambers-of the different directions of actions are capable of being short-circuited by a switching device.

Abstract: A camshaft phaser having a vane-type phaser having a central-position locking device having locking pins lockable in a locking slot stationary with respect to the stator and locking in the locking slot from different directions. A locking pin has a blocking portion and a flow-through pressure medium conduit, by which a fluid connection between two working chambers of different directions of action can be established or blocked in the different positions of the first locking pin. The working chambers-of the different directions of actions are capable of being short-circuited by a switching device.

Abstract: A camshaft adjusting device (1) including at least two hydraulic chamber (A, B) disposed between a stator (3) and a rotor (4) and separated by a vane (5) and supplied with pressure oil from a pressure oil source (P) by a hydraulic oil controller (6). In order to achieve improved filling and emptying of the hydraulic chambers, the hydraulic oil controller according to the invention provides: first and second supply lines (7, 9) disposed between the pressure oil source (P) and one of the hydraulic chambers (A), wherein check valves (8, 10) are disposed in the supply lines (7), wherein the supply lines (7) are free of further switchable valve elements, and wherein the supply lines (7) are the sole inlet line for hydraulic oil from the pressurized oil source (P) into the hydraulic chambers (A, B), and a 4/3-way valve element (11) that is effectively disposed between the hydraulic chambers (A, B) and a tank (T) has three valve positions (I, II, III).