Abstract: A check valve is mounted in a valve arrangement having a valve member with an annular channel and at least one bore opening into the annular channel. The check valve has a closing element configured to close the at least one bore in the annular channel. The closing element is formed of a strip shaped as a ring. The strip of the check valve is arranged in the annular channel of the valve member.

Abstract: A device for an internal combustion engine includes a cell wheel and a blade wheel, which is mounted in the cell wheel so as to be relatively moveable and is actuated hydraulically by oil and via pressure chambers. The oil flows through axial lines into the pressure chambers, which are designed, on the one hand, between a shaft of an axial fastening screw, inserted from one face side of the camshaft, and a control sleeve, which envelops the shaft and rests in at least one receiving borehole, and is designed, on the other hand, between the control sleeve and a borehole, which is arranged coaxially to the latter and belongs to a hub. For an optimal design of the lines by the control sleeve and a simple assembly of the control sleeve, the control sleeve and the fastening screw, exhibiting the shaft, are inserted starting from the same face side, which control sleeve rests in corresponding receiving boreholes of the hub.

Abstract: A pump for conveying a liquid has a housing and a shaft rotatably supported in the housing. An eccentric drive is arranged in the housing. At least one drive element is provided and is configured to be driven by the eccentric drive. The shaft is configured to adjust the eccentricity of the eccentric drive. The drive element is configured to be adjusted according to the eccentricity of the eccentric drive by a translatory movement in a direction transverse to the shaft.

Abstract: A camshaft includes a device for hydraulic adjustment of a relative rotating position of the camshaft for the purpose of influencing valve timing. The device has a drive wheel, a cell wheel, and an impeller. The impeller is disposed, by way of vanes, within cells of the cell wheel and can carry out relative motion. A locking arrangement, which operates in the starting phase of the internal-combustion engine, is provided between the cell wheel and the impeller. The locking arrangement is formed by a spring-loaded, hydraulically operated piston housed in one of the blades of the impeller and by a corresponding receiving device for the piston provided in a constructional unit consisting of the drive wheel and the cell wheel. The piston of the vane interacting with the receiving device is acted upon from a pressure duct of the vane. A reversal valve in the pressure duct is connected to pressure spaces of one of the cells.

Abstract: A camshaft includes a device for hydraulic adjustment of a relative rotating position of the camshaft for the purpose of influencing valve timing. The device has a drive wheel, a cell wheel, and an impeller. The impeller is disposed by way of vanes within cells of the cell wheel and can carry out relative motion. A locking arrangement, which operates in the starting phase of the internal-combustion engine, is provided between the cell wheel and the impeller. The locking arrangement is formed by an axially spring-loaded, hydraulically operated piston housed in one of the vanes of the impeller and by a corresponding receiving device for the piston provided in a constructional unit consisting of the drive wheel and the cell wheel. The piston, which projects by way of a locking section into the receiving device and is guided in the vane, cooperates with an operating element for optimizing the locking arrangement.

Abstract: An arrangement for the relative angle-of-rotation adjustment of a camshaft of an internal-combustion engine with respect to a driving wheel, had an interior part which is non-rotatably connected with the camshaft and which has at last approximately radially extending webs or blades. A driven cell wheel has several cells which are distributed along the circumference and are bounded by webs and can be divided into two pressure spaces by the webs or blades guided therein in an angularly movable manner. During the admission or discharge of hydraulic pressure to or from the pressure spaces by way of control lines, the camshaft is rotatable by way of the webs or blades between two end positions relative to the cell wheel. At least one locking device, which is operative between the interior part and the cell wheel, can lock the interior part with respect to the cell wheel in at least one end position.

Abstract: A device for the relative rotational angle adjustment of a cam shaft of a internal combustion engine to a drive wheel, with an interior part that is connected in a stationary manner with the cam shaft and is equipped with at least roughly radially running ribs or fins, and with a driven cellular wheel, which is equipped with several cells that are distributed across the circumference and limited by ribs. These cells are divided into two pressure chambers by the ribs or fins of the interior part, which are guided in an articulating manner, and the cam shaft is adjustable through the ribs or fins between two final positions relative to the cellular wheel when hydraulic pressure is applied and/or relieved through control lines.

Abstract: A pump for conveying a liquid has a housing and a shaft rotatably supported in the housing. An eccentric drive is arranged in the housing. At least one drive element is provided and is configured to be driven by the eccentric drive. The shaft is configured to adjust the eccentricity of the eccentric drive. The drive element is configured to be adjusted according to the eccentricity of the eccentric drive by a translatory movement in a direction transverse to the shaft.