Abstract: A pneumatic valve for controlling a gaseous medium, the pneumatic valve including a housing including an inlet and an outlet; a primary piston that forms a primary stage in cooperation with a primary valve seat in the housing, wherein the primary piston is axially movable in a housing bore along a longitudinal axis to open and close a direct volume flow connection between the inlet and the outlet; a pilot piston that forms a pilot stage in cooperation with a pilot valve seat at or in the primary piston, wherein the pilot piston is operatively connected with an electromagnetic actuator for opening or closing a throttle bore in the primary piston, wherein the inlet is connectable with the outlet indirectly through the primary piston by the throttle bore.

Abstract: A piston for a valve configured to control a gaseous medium, the piston including a piston head configured as a closure element and including a seal configured to seal the piston at a valve seat, wherein the seal is arranged at the piston head by a retainer. An electromagnetic valve configured to control a gaseous medium, the electromagnetic valve including an armature; and the piston operatively connected with the armature, wherein the piston head is applicable to the valve seat for closing one or plural pass-through openings of the electromagnetic valve. A fuel cell system including at least one fuel cell stack; a cathode supply; an anode supply; and the electromagnetic pressure regulation valve arranged in the anode supply.

Abstract: An electromagnetic valve for an anode supply of a fuel cell system wherein the electromagnetic valve is configured as a purge or drain valve, the electromagnetic valve including a magnet coil that electromagnetically actuates the electromagnetic valve, wherein the magnet coil is a heating element and includes a coil winding which includes at least one additional electrical contact besides electrical end contacts.

Abstract: The presently disclosed invention relates to a hydrogen valve having a valve housing with a fluid inlet and a fluid outlet. The hydrogen valve includes a valve main body which is configured to be transferable between an open position, in which a volumetric flow connection is established between the fluid inlet and the fluid outlet, and a closed position, in which the valve main body is arranged in a main sealing seat fixed to the housing and the volumetric flow connection between the fluid inlet and the fluid outlet is closed. Also included is a pilot control valve device having a pilot member which is transferable by way of an actuator between an open position in which a throttle bore is exposed through the valve main body and connects the fluid inlet and the fluid outlet to each other and a closed position, in which the pilot member rests in a pilot control valve seat arranged on the valve main body and closes the throttle bore.

Abstract: A jet pump configured to control a feed of a gaseous medium, the jet pump comprising: a primary nozzle configured to feed a propellant and including a nozzle body and a nozzle needle longitudinally movable within the nozzle body so that a nozzle cross section of the primary nozzle is variably adjustable and closeable by the nozzle needle; a compression spring that urges the nozzle needle in a closing direction, wherein the nozzle needle includes a first pressure surface configured to be loaded with a pressure of the propellant in an opening direction that is opposite to the closing direction, and a second pressure surface configured to be loaded with a pressure of a secondary medium in the closing direction.

Abstract: A switch valve is disclosed including a stepping motor and a housing configured to receive a stepping motor, itself operatively connected to an actuating element which is configured to position a valve body that is arranged in the housing so as to perform a translatory movement of the switch valve. The coupling element is configured to convert a rotational movement of the stepping motor into a translational movement of the actuating element. A motor shaft of the stepping motor is arranged coaxially with the actuating element and the coupling element. The motor shaft and the actuating element are configured to engage in the coupling element.

Abstract: A pneumatic valve for controlling a gaseous medium, the pneumatic valve including a housing including an inlet and an outlet; a primary piston that forms a primary stage in cooperation with a primary valve seat in the housing, wherein the primary piston is axially movable in a housing bore along a longitudinal axis to open and close a direct volume flow connection between the inlet and the outlet; a pilot piston that forms a pilot stage in cooperation with a pilot valve seat at or in the primary piston, wherein the pilot piston is operatively connected with an electromagnetic actuator for opening or closing a throttle bore in the primary piston, wherein the inlet is connectable with the outlet indirectly through the primary piston by the throttle bore.

Abstract: A switch over valve, in particular for controlling a hydraulic fluid flow, comprising: a contact element; and a sleeve shaped connecting section including a first bore hole for connecting with a first hydraulic fluid conduit, a second bore hole for connecting with a second hydraulic fluid conduit, and a relief bore hole for connecting with a relief channel, wherein the contact element is arranged in the sleeve shaped connecting section and optionally displaceable into a first switching position or a second switching position, wherein the first hydraulic fluid conduit is connected with the relief channel in the first switching position and the second hydraulic fluid conduit is connected with the relief channel in the second switching position, characterized in that the cut off valves are provided which are integrated into the switch over valve.

Abstract: A cam phaser for a double camshaft, the cam phaser comprising: a rotor; and a stator, wherein the rotor is a rotatable relative to the stator about a rotor axis of the rotor that is coaxial to a longitudinal axis of the stator, wherein a radial vane of the rotor is positionable between two bars of the stator, wherein the radial vane divides an intermediary space formed between the two bars into two pressure cavities, wherein the double camshaft includes a first camshaft that is configured as a hollow cylinder and a second camshaft that is at least partially received in the first camshaft wherein the first camshaft and the second camshaft are rotatable relative to each other, wherein one of the first camshaft and the second camshaft is connected torque proof with the rotor and another of the first camshaft and the second camshaft is connected torque proof with the stator, wherein the rotor is movable by pressures in the two pressure chambers to cause a rotation of the first camshaft and the second camshaft rel

Abstract: A camshaft arrangement includes an adjustable camshaft and an adjuster for adjusting the camshaft. The adjustable camshaft includes an outer shaft and an inner shaft arranged rotatably in the outer shaft. The adjuster includes a stator connected with the outer shaft in a rotationally fixed manner, and a rotor connected in a rotationally fixed inner with the inner shaft via an axially inserted coupling. A bush is connected with the rotor in a rotationally fixed manner and has at least one channel for supplying a lubricant. The bush has on a face side that axially faces the inner shaft a form that together with a counter-form on the inner shaft provides the axially inserted coupling.

Abstract: A connecting rod for a variable compression internal combustion engine, the connecting rod an eccentrical element adjustment arrangement for adjusting an effective connecting rod length, the eccentrical element adjustment arrangement including a first cylinder including a first hydraulic chamber and a second cylinder including a second hydraulic chamber, a first inlet for feeding hydraulic fluid into the first cylinder from a supply and a first outlet for draining the hydraulic fluid from the first cylinder, a second inlet for feeding hydraulic fluid into the second cylinder from the supply and a second outlet for draining the hydraulic fluid from the second cylinder, a switch valve for controlling a hydraulic fluid flow, the switch valve including a piston that is movable in a housing, wherein the piston is displaceable into a first switching position or a second switching position, wherein the second outlet of the second cylinder is connected with the supply in the first switching position and the first out

Abstract: A connecting rod for a variable compression internal combustion engine, the connecting rod comprising: at least one hydraulic chamber configured in a connecting rod body, wherein the at least one hydraulic chamber is connectable by a check valve with a bearing shell of the connecting rod or with a tank, wherein the check valve includes a closure element and a valve seat, wherein the closure element contacts the valve seat in a blocking position of the closure element and blocks a fluid path, and wherein the closure element is arranged in a bore hole of the connecting rod body and the valve seat is introduced into the connecting rod body.

Abstract: A connecting rod for an internal combustion engine with variable compression, the connecting rod including an eccentrical element adjustment arrangement configured to adjust an effective connecting rod length, wherein the eccentrical element adjustment arrangement includes an eccentrical element that cooperates with an eccentrical element lever and supports rods that engage the eccentrical element lever, and wherein the eccentrical element lever is integrally configured in one piece as a stamped and bent component or fabricated by a massive cold forming method.

Abstract: A switch valve for controlling a hydraulic fluid flow, the switch valve comprising: a capture element that is arranged in a valve housing and that is displaceable into a first switching position or a second switching position and interlockable by a spring loaded interlocking element in the first switching position or the second switching position, wherein a first hydraulic connection is connected with a relief connection in the first switching position and a second hydraulic connection is connected with the relief connection in the second switching position, wherein a switching travel of the capture element is limited, wherein the interlocking element is at least partially arranged in a recess of the capture element, and wherein the valve housing includes a first groove that is oriented in an axial direction and limited in the axial direction wherein the interlocking element is arranged axially movable in the first groove.

Abstract: A hydraulic module configured to control a hydraulic fluid flow of a connecting rod of an internal combustion with variable compression, the connecting rod including an eccentrical element adjustment arrangement for adjusting an effective connecting rod length, wherein the eccentrical element adjustment arrangement includes at least a first cylinder and a second cylinder configured as hydraulic chambers, wherein a first inlet for feeding hydraulic fluid into the first cylinder through a supply conduit and a second inlet for feeding hydraulic fluid into the second cylinder through the supply conduit and a first outlet for draining hydraulic fluid from the first cylinder and a second outlet for draining hydraulic fluid from the second cylinder are provided, wherein the hydraulic module includes at least one piston that is displaceable in a housing into a first switching position or a second switching position.

Abstract: A connecting rod for a variable compression internal combustion engine, the connecting rod including an eccentrical element adjust arrangement for adjusting an effective connecting rod length, wherein an adjustment travel of the eccentrical element adjustment arrangement is adjustable by a switch valve, and wherein a valve housing of the switch valve is axially secured in a borehole of the connecting rod.

Abstract: A connecting rod for a variable compression internal combustion engine, the connecting rod including a crank bearing eye for connecting the connecting rod with a crankshaft of the internal combustion engine; a connecting rod bearing eye for connecting the connecting rod with a cylinder piston of the internal combustion engine; an eccentrical element adjustment arrangement for adjusting an effective connecting rod length, wherein the eccentrical element adjustment arrangement includes an eccentrical element that cooperates with an eccentrical element lever and that is connected torque proof with the eccentrical element lever, wherein a wrist pin of the cylinder piston is receivable in the eccentrical element, wherein the eccentrical element adjustment arrangement includes two cylinders with a respective piston that is supported in a cylinder bore and connected with a respective support rod, wherein the eccentrical element lever includes one or plural eccentrical element lever segments.

Abstract: A switch valve for controlling a hydraulic fluid flow, the switch valve comprising a tapping element that is arranged in a valve housing, wherein the tapping element is displaceable into a first switching position or a second switching position and interlockable by a spring loaded interlocking element in the first switching position or the second switching position, wherein a first hydraulic connection is connected with a relief connection in the first switching position and a second hydraulic connection is connected with the relief connection in the second switching position, wherein a switching travel of the tapping element is limited, wherein the interlocking element is at least partially arranged in a recess of the tapping element, wherein the valve housing includes a first groove that is oriented in an axial direction of the valve housing and limited in the axial direction.

Abstract: A connecting rod for a variable compression internal combustion engine, the connecting rod including a crank bearing eye configured to connect the connecting rod to a crankshaft of the variable compression internal combustion engine; a connecting rod bearing eye configured to connect the connecting rod to a cylinder piston of the variable compression internal combustion engine; an eccentrical element adjustment arrangement configured to adjust an effective connective rod length, which eccentrical element adjustment arrangement includes an eccentrical element that is connected torque proof with an eccentrical element lever, wherein a wrist pin of the cylinder piston is receivable in the eccentrical element, wherein the eccentrical element adjustment arrangement includes two hydraulic chambers respectively including a piston that is movably arranged in a cylindrical borehole and connected with a support rod which is connected with the eccentrical element lever at another end, wherein the support rod is configur

Abstract: A hydraulic module with a switch valve for controlling a flow of a hydraulic fluid in a connecting rod for an internal combustion engine with variable compression with an eccentric element adjustment arrangement for adjusting an effective connecting rod length, wherein the eccentrical element adjustment arrangement includes a first cylinder and a second cylinder configured as hydraulic chambers, wherein a first inlet is provided for feeding the hydraulic fluid into the first cylinder and a second inlet is provided for feeding the hydraulic fluid into the second cylinder, wherein a first outlet is provided for draining the hydraulic fluid from the first cylinder and a second outlet is provided for draining the hydraulic fluid from the second cylinder wherein a first check valve is associated with the first cylinder and a second check valve is associated with the second cylinder.