Abstract: In a camshaft adjusting device including a vane cell adjuster component for coupling a camshaft to a crankshaft to be driven by the crankshaft in an adjustable angular relationship, wherein a vane rotor is mounted onto the camshaft by a central hollow clamping bolt including a control valve for controlling the flow of control fluid to and from the vane cells so as to control the relative angular position of the camshaft, an additional fixing means is provided between the vane rotor and the camshaft for assisting a rotationally fixed coupling of the vane rotor with the camshaft.

Abstract: In a camshaft adjusting device comprising a locking unit provided for locking an adjustment function component in at least one position relative to a camshaft drive component wherein at least two locking structures are provided which each have at least one locking surface for mutual engagement, each locking structure surface is formed by an at least substantially planar area which is inclined with respect to the direction of movement, the locking unit providing for a play-free engagement between the camshaft drive component and the adjustment function component.

Abstract: In an adjustment device for adjusting the phase position of a camshaft relative to a crankshaft of an internal combustion engine which includes a hydraulic system for supplying hydraulic fluid under pressure to the adjustment device for the controlled admission to, and release thereof from, operating chambers of the adjustment device under the control of a control device including a control valve, the operating chambers are in communication with one another via control valves to permit flow of hydraulic fluid from one set of operating chambers to another by the varying torques effective on the camshaft or by controlling fluid supply to the operating chambers from the hydraulic fluid supply system.

Abstract: In an adjustment device for adjusting the phase position of a camshaft relative to a crankshaft of an internal combustion engine which includes a hydraulic system for supplying hydraulic fluid under pressure to the adjustment device for the controlled admission to, and release thereof from, operating chambers of the adjustment device under the control of a control device including a control valve, the operating chambers are in communication with one another via control valves to permit flow of hydraulic fluid from one set of operating chambers to another by the varying torques effective on the camshaft or by controlling fluid supply to the operating chambers from the hydraulic fluid supply system.

Abstract: In a camshaft adjusting device comprising a locking unit provided for locking an adjustment function component in at least one position relative to a camshaft drive component wherein at least two locking structures are provided which each have at least one locking surface for mutual engagement, each locking structure surface is formed by an at least substantially planar area which is inclined with respect to the direction of movement, the locking unit providing for a play-free engagement between the camshaft drive component and the adjustment function component.

Abstract: In a camshaft adjusting device including a vane cell adjuster component for coupling a camshaft to a crankshaft to be driven by the crankshaft in an adjustable angular relationship, wherein a vane rotor is mounted onto the camshaft by a central hollow clamping bolt including a control valve for controlling the flow of control fluid to and from the vane cells so as to control the relative angular position of the camshaft, an additional fixing means is provided between the vane rotor and the camshaft for assisting a rotationally fixed coupling of the vane rotor with the camshaft.