Abstract: An actuating device for hydraulically securing a camshaft of an engine of a motor vehicle in a start position has a solenoid valve controlling the flow of a pressure medium to a camshaft adjuster with a rotary slide valve that is fixedly connected to the camshaft and moves the camshaft into the required start position according to the pressure medium supplied to it by the solenoid valve.

Abstract: An arrangement is provided for relative angle-of-rotation adjustment of a camshaft of an internal-combustion engine with respect to a driving wheel. An interior part, non-rotatably connected with the camshaft, has at least approximately radially extending webs or vanes. A driven cell wheel has several cells distributed along the circumference and bounded by webs. The camshaft is rotatable by way of the webs or vanes between two end positions relative to the cell wheel, and the interior part is laterally bounded by two cover elements connected with the cell wheel. Recesses forming chambers are provided to reduce friction between the webs or vanes of the interior part and the cover elements in the side walls of the vanes directed to the cover elements. During operation of the internal-combustion engine, the recesses are at least partially acted upon by hydraulic oil.

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: A valve control for adjusting a stroke of valves in motor vehicles has at least one adjusting shaft for moving a valve shaft of a valve via at least one transmitting chain. At least one hydraulic drive is provided and acts on the at least one adjusting shaft. The hydraulic drive provides a limited rotation to the at least one adjusting shaft about an axis of the at least one adjusting shaft.

Abstract: The invention relates to a system for the relative angle-of-rotation adjustment of a camshaft of an internal-combustion engine with respect to a driving wheel, having an adjusting unit (6) which has an interior part (4) non-rotatably connected with the camshaft (2), the adjusting unit (6) having a cell wheel (12) which encloses the interior part (4) and which has several cells distributed along the circumference and bounded by webs (14a to 14c), which cells are divided by webs or blades (8a to 8c) of the interior part (4) angularly movably guided therein into two pressure spaces (22a to 22c and 24a to 24c) respectively, during whose hydraulic pressure admission or pressure relief, the camshaft can be rotated by way of the webs or blades (8a to 8c) between two end positions relative to the cell wheel (12) and that a movable locking element (66) interacts with at least one counterelement in the respective other one of the two components—cell wheel (12) or interior part (4)—, that the locking element

Abstract: An arrangement for the relative angle-of-rotation adjustment of a camshaft with respect to a driving wheel has an interior part which is non-rotatably connected with the camshaft. 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. 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. At least one blade of the interior part has a head part having at least one locking element which interacts with a locking structure provided on at least one web of the cell wheel.

Abstract: The invention is based on an arrangement for the relative angle-of-rotation adjustment of a camshaft of an internal-combustion engine with respect to a driving wheel, having an interior part (4) non-rotatably connected with the camshaft (2), which interior part (4) has at least approximately radially extending webs or vanes (6a to 6e), and having a driven cell wheel (10) which has several cells distributed along the circumference and bounded by webs (12a to 12e), which cells are divided by the webs or vanes (6a to 6e) of the interior part (4) angularly movably guided in the cells into two pressure spaces (22a to 22e and 24a to 24e) respectively, when hydraulic pressure is admitted or removed from the pressure spaces (22a to 22e and 24a to 24e respectively) by way of control lines, the camshaft being rotatable by way of the webs or vanes between two end positions relative to the cell wheel (10), the interior part (4) being laterally bounded by two cover elements (14, 16) connected with the cell wheel.

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 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: An actuating device for hydraulically securing a camshaft of an engine of a motor vehicle in a start position has a solenoid valve controlling the flow of a pressure medium to a camshaft adjuster with a rotary slide valve that is fixedly connected to the camshaft and moves the camshaft into the required start position according to the pressure medium supplied to it by the solenoid valve.

Abstract: A device for exhaust gas after treatment of diesel engines has one or more storage containers containing an urea solution and having a flexible wall. At least one compressed air conduit is connected to a mixing area and supplies compressed air to the mixing area. A pump conveys the urea solution from the storage container to the mixing area where a mist of the urea solution and the compressed air is formed. In another embodiment, the pump is eliminated and the urea solution is conveyed under its own weight from the storage container to the mixing area. In yet another embodiment, a pressure chamber is provided in which the storage container is arranged. A compressed air supply conduit is connected to the pressure chamber and pressurizes the exterior of the storage container.

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: 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: 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.