Abstract: This disclosure relates to a proportional valve arrangement for refrigerants, with a valve housing comprising a valve body chamber, a valve body which is arranged inside the valve body chamber and which is configured to be transferable between a first sealing seat and a second sealing seat. An electrically actuable drive is connected to the valve body via a spindle. A locking device is arranged between the spindle and the valve body and is configured to generate an axial preload between the valve body and the first sealing seat when the valve body abuts against the first sealing seat and for generating an axial preload between the valve body and the second sealing seat when the valve body abuts against the second sealing seat.

Abstract: This disclosure relates to a proportional valve arrangement for refrigerant, with a valve housing having a valve body chamber, a valve body which is arranged within the valve body chamber and configured to be transferable between a first position and a second position. The valve housing includes a first sealing seat and a second sealing seat, and the valve body which is transferable between the first sealing seat and the second sealing seat.

Abstract: An electromagnetic actuator including an actuator unit; and an actuation unit acting in an axial direction, wherein the actuator unit includes a coil generating a magnetic field and including a pole core that is arranged within the coil, wherein at least two permanent magnets are arranged adjoining a face of the pole core in the axial direction so that the at least two permanent magnets are applicable to the face of the pole core and movable in the axial direction so that the at least two permanent magnets are drivable by the coil independently from each other.

Abstract: An electromagnetic actuator including an actuator unit; and an actuation unit acting in an axial direction, wherein the actuator unit includes a coil generating a magnetic field and including a pole core that is arranged within the coil, wherein at least two permanent magnets are arranged adjoining a face of the pole core in the axial direction so that the at least two permanent magnets are applicable to the face of the pole core and movable in the axial direction so that the at least two permanent magnets are drivable by the coil independently from each other.

Abstract: A hydraulic valve with at least two switching positions including a valve housing including a borehole which includes sections with different diameters along its longitudinal direction; a supply connection for supplying a hydraulic fluid; at least one first operating connection and a second operating connection; at least one first tank drain and a second tank drain for draining the hydraulic fluid; and a piston arranged in the borehole in the longitudinal direction of the borehole wherein the piston is supported at the valve housing at one end by a spring which imparts a spring force and wherein the piston is coupled longitudinally movable with a magnetic actuator which is provided for imparting a magnetic force, wherein a first control groove connects the first operating connection with the first tank drain or with the supply connection.

Abstract: The invention relates to a hydraulic transmission valve with a magnetizable housing which is integrally configured in one piece with a pole core cone. The transmission valve according to the invention facilitates comfortably coupling in particular startup clutches, shifting clutches or synchronization clutches in a friction locking manner. Still using a transmission valve of this type is facilitated for fewer to no transmission oil changes. Furthermore a transmission valve of this type can also be used in countries with inferior transmission oil quality. The housing includes a connection. The connection defines an anchor stroke and a concentric arrangement between the pole core cone and a pole tube. Thus, the pole tube is fixated the magnetizable pole flange. An anchor that is exclusively supported in the pole tube is magnetically separated from the pole tube through a separation layer with a thickness of 0.01 mm to 0.06 mm.

Abstract: The invention relates to a hydraulic transmission valve with a magnetizable housing which is integrally configured in one piece with a pole core cone. The transmission valve according to the invention facilitates comfortably coupling in particular startup clutches, shifting clutches or synchronization clutches in a friction locking manner. Still using a transmission valve of this type is facilitated for fewer to no transmission oil changes. Furthermore a transmission valve of this type can also be used in countries with inferior transmission oil quality. The housing includes a connection. The connection defines an anchor stroke and a concentric arrangement between the pole core cone and a pole tube. Thus, the pole tube is fixated the magnetizable pole flange. An anchor that is exclusively supported in the pole tube is magnetically separated from the pole tube through a separation layer with a thickness of 0.01 mm to 0.06 mm.

Abstract: A freeze-resistant metering valve is provided that comprises a magnetic part and a hydraulic part. The magnetic part has an armature biased by a spring. The hydraulic part has an annular space for receiving and conveying a liquid as well as a tappet facing a valve seat. The valve seat comprises a nozzle opening on the side facing away from the tappet. In a currentless state, the tappet blocks the annular space in the direction of an opening (nozzle opening) until a freezing pressure exerted onto the armature generates a sufficient force by virtue of the solidifying liquid. This force is used to counteract the spring force until a freeze expansion space is created by way of a relieving motion.

Abstract: A freeze-resistant metering valve is provided that comprises a magnetic part and a hydraulic part. The magnetic part has an armature biased by a spring. The hydraulic part has an annular space for receiving and conveying a liquid as well as a tappet facing a valve seat. The valve seat comprises a nozzle opening on the side facing away from the tappet. In a currentless state, the tappet blocks the annular space in the direction of an opening (nozzle opening) until a freezing pressure exerted onto the armature generates a sufficient force by virtue of the solidifying liquid. This force is used to counteract the spring force until a freeze expansion space is created by way of a relieving motion.

Abstract: A freeze-resistant metering valve is provided that comprises a magnetic part and a hydraulic part. The magnetic part has an armature biased by a spring. The hydraulic part has an annular space for receiving and conveying a liquid as well as a tappet facing a valve seat. The valve seat comprises a nozzle opening on the side facing away from the tappet. In a currentless state, the tappet blocks the annular space in the direction of an opening (nozzle opening) until a freezing pressure exerted onto the armature generates a sufficient force by virtue of the solidifying liquid. This force is used to counteract the spring force until a freeze expansion space is created by way of a relieving motion.

Abstract: A filter cartridge for liquid media at risk for freezing employed in fuel cell operated vehicles and internal combustion engines has a housing and a filter lid connected to the housing for closing the housing. A filter insert is inserted into the housing and provided with at least one filter element and terminal parts. The filter element is positioned between the terminal parts. The filter insert also has at least one pretensioning part for axially pretensioning the at least one filter element. At least one reinforcement part is provided that has at least one profiled section. It is inserted into the filter element and receives at least one of torque and axial forces. This prevents twisting of the filter element and improves the sealing action and the filter function.

Abstract: A pump for conveying an exhaust gas treatment medium in diesel engines has a pump housing and a piston arranged in the pump housing and movable in the pump housing against a counterforce. The piston pumps an exhaust gas treatment medium form at least one inlet of the pump to at least one outlet of the pump. A diaphragm separates the piston from the exhaust gas treatment medium. The counterforce is provided by at least one spring that is a pressure spring.

Abstract: A filter unit for liquids undergoing freezing for a metering unit of an exhaust gas treatment unit has a housing having an outer member and a lid member. At least one filter insert is arranged in the housing. An elastically deformable casing part is provided that surrounds at least partially the filter insert. The elastically deformable casing part is a part of the lid member or of the outer member of the housing and is made of a thermoplastic synthetic material. When the liquid undergoes freezing and thawing in the filter unit, the elastically deformable casing part can compensate the volume changes caused by freezing and thawing.

Abstract: The invention relates to a freeze-resistant metering valve that comprises a magnetic part and a hydraulic part. The magnetic part has an armature biased by a spring. The hydraulic part has an annular space for receiving and conveying a liquid as well as a tappet facing a valve seat. The valve seat comprises a nozzle opening on the side facing away from the tappet. In a currentless state, the tappet blocks the annular space in the direction of an opening (nozzle opening) until the freezing pressure onto the armature generates a sufficient force by virtue of the solidifying liquid. This force is used to counteract the spring force until a freeze expansion space is created by way of a relieving motion.

Abstract: An exhaust gas after treatment device for a diesel engine of a vehicle has at least one injection valve with an injection nozzle through which an exhaust gas treatment medium is injected into an exhaust pipe. At least one pump is provided that conveys the exhaust gas treatment medium to the at least one injection valve. At least one sensor and at least one control are also provided. The pump, the sensor, and the injection valve are connected to the at least one control. The at least one pump and the at least one control are combined to an assembly, and the assembly also includes the at least one injection valve.

Abstract: A device for injecting at intermittent periods a dispersion of a liquid at controlled pulsing periods into exhaust fumes of a combustion engine, said liquid contains a component which reacts with a component of the exhaust fumes at a catalytic converter, said device comprises a housing containing a first chamber a means for supplying the liquid into a first chamber a means for pumping the liquid from the first chamber into a pressure swirl atomizer where the liquid is dispersed, said swirl atomizer comprising an outlet nozzle leading the dispersion into an exhaust manifold through which the exhaust fumes are directed prior to being converted at the catalytic converter, said device further comprises a means for controlling the means for pumping such that a pulsing period during which the liquid is injected into the swirl atomizer is controlled to be from about 1 to about 1000 milliseconds as well as a method for injecting a dispersion of a liquid into exhaust fumes of combustion engines.

Abstract: A device for exhaust gas after treatment of motor vehicles has a pump device for supplying a solution to the exhaust gas manifold. The pump device is a metering pump having a connecting part that opens into the exhaust gas manifold. The pump device has a piston and a piezo element for actuating the piston. The pump device has a housing provided with a housing chamber. The connecting part is arranged in the housing chamber that is located at an end face of the housing. The pump device has a pressure chamber for receiving the solution. A first check valve closes off the pressure chamber relative to the connecting part. The housing of the pump device has a supply line, and the piston sucks in the solution from the supply line. The pump device has a second check valve for closing off the supply line.

Abstract: An actuating device for a transmission of a motor vehicle has a housing and two pistons moveably arranged in the housing. A coupling part is arranged between the two pistons and is acted on by the two pistons so as to be moved by the two pistons. The coupling part is connected to a shifting part of the transmission and is made, at least on a surface of the coupling part, of wear-resistant material. The two pistons are loosely seated on the coupling part so that these parts can align themselves properly relative to one another after mounting.

Abstract: A valve stroke control for an internal combustion engine of a motor vehicle has a control device for adjusting a valve stroke. It interacts with a camshaft and a control shaft. The control device is actuated by a hydraulic medium and has a first control element and a second control element movable relative to one another. The first control element is sleeve-shaped and the second control element is received in the first control element. A rocker lever is acted on by the camshaft. The first control element is supported on the rocker lever and the second control element is supported on the control shaft.

Abstract: An actuating device for a transmission of a motor vehicle has a housing and two pistons moveably arranged in the housing. A coupling part is arranged between the two pistons and is acted on by the two pistons so as to be moved by the two pistons. The coupling part is connected to a shifting part of the transmission and is made, at least on a surface of the coupling part, of wear-resistant material. The two pistons are loosely seated on the coupling part so that these parts can align themselves properly relative to one another after mounting.