Abstract: A check valve for a connecting rod for a variable compression internal combustion engine with at least one hydraulic chamber arranged in the connecting rod and connectable with a supply connection or a tank through the check valve, the check valve including a valve housing; and a valve closure element that is axially movable in the valve housing along a longitudinal valve axis, wherein the valve closure element is applicable to a valve seat and arranged in the valve housing secured against separation from the valve housing, wherein a pin shaped separation prevention element is provided which secures the valve closure element in the valve housing and limits a stroke of the valve closure element.

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 of a connecting rod for an internal combustion engine with variable compression with an eccentrical element adjustment arrangement for adjusting an effective connecting rod length, the switch valve including a valve housing including a first operating connection and a second operating connection and a supply connection, wherein at least one filter element is arranged in a portion of the first operating connection or the second operating connection or the supply connection. The switch valve is advantageously used in a connecting rod for an internal combustion engine with variable compression.

Abstract: A central actuator for a magnet valve of a cam phaser, the central actuator including a housing that envelops the central actuator; a pole tube and a pole core that are arranged within at least one coil that generates a magnetic field; an actuation plunger that is arranged at an armature that is axially movable in a direction in an armature cavity; a closure element that closes the armature cavity, wherein the closure element includes at least one pole core insert that includes a central bore hole and a support bushing that is arranged in the central bore hole of the pole core insert, wherein the actuation plunger is supported axially movable in the support bushing, and wherein the closure element includes a closure cover and is provided as a pre-assembled module.

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

Abstract: A switch valve configured to control a hydraulic fluid flow, the switch valve including a capture element which is arranged in a valve housing and displaceable into a first switching position or a second switching position, wherein a first hydraulic connection is connected with a supply connection in the first switching position and a second hydraulic connection is connected with the supply connection in the second switching position, wherein at least two pass through bore holes are provided in the capture element and extend through the capture element, wherein a first pass through bore hole provides a fluid connection between the first hydraulic connection and the supply connection in the first switching position and a second pass through bore hole provides a fluid connection between the second hydraulic connection and the supply connection in the second switching position.

Abstract: A connecting rod for an internal combustion engine with an eccentrical element adjustment arrangement for adjusting an effective connecting rod length, the eccentrical element adjustment arrangement including at least one ball joint including a ball head that is arranged at a support rod and supported in a ball head receiver of a piston, wherein the ball head is secured at its outer surface in the ball head receiver by safety devices against sliding out of the ball head receiver, and wherein the safety devices are configured as a one-piece or a multi-piece annular safety element which is arranged in the piston at least partially bonded or form locking.

Abstract: A hydraulic valve for shifting a control piston in a connecting rod of an internal combustion engine with variable compression, the hydraulic valve including a valve housing including a first operating connection and a second operating connection and a supply connection that is loadable with a hydraulic pressure of a hydraulic fluid; a step piston that is arranged in the valve housing and displaceable against a force of a preloaded spring. A first check valve is associated with the first operating connection and a second check valve is associated with the second operating connection wherein the first check valve and the second check valve open or close a connection of the first operating connection or the second operating connection with the supply connection as a function of a position of the step piston, wherein the first check valve and the second check valve is integrated into the valve housing.

Abstract: A filter element for a connecting rod including an eccentrical element adjustment arrangement for adjusting an effective connecting rod length, the filter element comprising a bushing that is flowable by a hydraulic fluid along a fluid path; and at least one screen insert that is arranged in the fluid path of the bushing. The invention also relates to a connecting rod with at least one filter element.

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 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: The invention relates to a check valve for a connecting rod for a variable compression internal combustion engine including at least one hydraulic chamber, the check valve including a valve body with a fluid path that is openable and closable by at least one closure element, wherein the at least one closure element is provided as an annular band. The invention also relates to a connecting rod for a variable compression internal combustion engine including a least one hydraulic chamber that is connectable by the at least one check valve with a bearing shell or a supply connection of the connecting rod or another hydraulic chamber.

Abstract: A check valve for a connecting rod with at least one hydraulic chamber for a variable compression internal combustion engine, wherein the hydraulic chamber is connectable by the check valve with a hydraulic fluid conduit, and wherein the check valve includes a valve closure element that is configured as a disc.

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 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 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.

Abstract: A hydraulic valve for a cam phaser, the hydraulic valve including a bushing element, including a longitudinal channel, a first transversal channel originating from the longitudinal channel, a second transversal channel originating from the longitudinal channel, a pressure balanced hollow piston arranged within the longitudinal channel axially moveable between a first end position and a second end position, wherein the longitudinal channel includes a first channel section with a larger inner diameter and a second channel section with a smaller inner diameter, wherein the first transversal channel originates from the first channel section and the second transversal channel originates from the second channel section, wherein the hollow piston includes a longitudinal channel with an axial opening, at least one transversal channel, a first piston section with a greater outer diameter and a second piston section with a smaller outer diameter.

Abstract: A connecting rod for an internal combustion engine with variable compression with an eccentrical element adjustment device for adjusting an effective connecting rod length, the connecting rod including a connecting rod body; and a connecting rod cover arranged at the connecting rod body, wherein the connecting rod body and the connecting rod cover envelop a crank bearing eye, wherein the eccentrical element adjustment device includes two cylinders with a respective piston that is displaceably supported in a respective cylinder bore hole and connected with a respective support rod, wherein a respective inlet is provided for supplying hydraulic fluid to each of the two cylinders, wherein a respective outlet is provided for draining the hydraulic fluid from each of the two cylinders, wherein the connecting rod body includes at least two connecting rod body grooves for connecting each respective inlet with a hydraulic fluid loop, wherein the at least two connecting rod body grooves are arranged so that a highly l

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 check valve for a connecting rod for a variable compression internal combustion engine with at least one hydraulic chamber arranged in the connecting rod and connectable with a supply connection or a tank through the check valve, the check valve including a valve housing; and a valve closure element that is axially movable in the valve housing along a longitudinal valve axis, wherein the valve closure element is applicable to a valve seat and arranged in the valve housing secured against separation from the valve housing, wherein a pin shaped separation prevention element is provided which secures the valve closure element in the valve housing and limits a stroke of the valve closure element.