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 center bolt oil control valve including a valve housing, a piston within the valve housing, and a calibration cap having at least a pressure check valve and filter. The calibration cap is located within the valve housing and is extending out an end of the valve housing. A supply pressure port may be placed in the valve housing, wherein the supply pressure port supplies a hydraulic fluid to ports in the valve housing depending on a position of the piston. The valve housing includes a threaded portion and is fastened to a cam nose with the threaded portion, wherein a supply pressure port of the cam nose is adjacent the threaded portion. This valve provides improved design flexibility, especially for axial constrained applications.

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: An oil control valve for a cam phaser of an internal combustion engine where the spool is positioned by an external actuator. The pressure enters the end of the oil control valve where the resultant pressure force is balanced by the differential area of the spool. The spool contains two plate check valves enabling cam torque recirculation of oil from A to B or B to A depending upon the spool position. In mid position, the spool lands block A and B to hold the cam phaser position. Three or five positions may be utilized.

Abstract: A system for mounting a cam phaser at a cam shaft of an internal combustion engine, the system including the cam phaser including a stator and a rotor that is rotatable relative to the stator; a control valve configured to adjust a phase angle of the cam shaft, wherein the control valve is configured to control a position of the rotor of the cam phaser by letting fluid flow into the cam phaser or letting fluid flow out of the cam phaser; and an assembly tool that includes at least one support device that is insertable into at least one corresponding support opening of the rotor so that a force is transferable between the rotor and the assembly tool.

Abstract: A hydraulic valve, in particular for a phaser of a cam shaft, the hydraulic valve including a bushing including a piston that is displaceable in a bore hole along a longitudinal direction; a supply connection configured to supply a hydraulic fluid; at least a first operating connection and a second operating connection; and at least one tank drain configured to drain the hydraulic fluid, wherein the first operating connection and the second operating connection are alternatively connectable with each other and/or with the supply connection and/or with the at least one tank drain through at least one check valve by displacing the piston.

Abstract: A cam phaser including a rotation phaser and a hydraulic valve hydraulically loading the rotation phaser, wherein the hydraulic valve is connectable torque proof with a cam shaft so that the cam shaft is rotatable, wherein the rotation phaser includes a stator and a rotor configured coaxial with the stator, wherein the rotor is rotatable relative to the stator, wherein the hydraulic valve is configured so that it protrudes at least partially into the rotation phaser, wherein an adapter is provided for a relative axial positioning of the rotor and the stator. According to the invention the adapter is configured for loose mounting in the rotation phaser so that a fixated connection of the adapter in the rotation phaser is provided when the cam shaft is mounted at the hydraulic valve.

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 eccentrical element adjustment arrangement including a first cylinder including a first hydraulic chamber; a second cylinder including a second hydraulic chamber, wherein the first cylinder includes a first inlet for feeding hydraulic fluid into the first cylinder from a supply and the second cylinder includes a second inlet for feeding hydraulic fluid into the second cylinder from the supply, wherein the first cylinder includes a first drain for draining the hydraulic fluid from the first cylinder and the second cylinder includes a second drain for draining the hydraulic fluid from the second cylinder, wherein the switch valve includes a step piston which is displaceable into a first switching position or a second switching position.

Abstract: A rotor for a cam phaser, the rotor rotating about a rotation axis and the rotor including a first face; a receiving face arranged opposite to the first face; a central portion; at least one lobe that is arranged at the central portion and which extends away from the central portion in a radial direction; and a cam shaft receiving recess provided at the receiving face and configured to receive a cam shaft, wherein the cam shaft receiving recess includes an inside surface, wherein at least two cam shaft centering elements are arranged at the inside surface for centering the cam shaft, and wherein the cam shaft centering elements are configured as protrusions. The invention also relates to a joining kit.

Abstract: An electro hydraulic valve for a cam phaser, including an electromagnetic actuator assembly, and a hydraulic assembly, wherein the electromagnetic actuator assembly and the hydraulic assembly are arranged axially aligned along a longitudinal axis, wherein the hydraulic assembly includes a valve housing in which a valve piston is arranged axially movable along the longitudinal axis, wherein a plunger for positioning the valve piston along the longitudinal axis is arranged within the electromagnetic actuator assembly, and wherein the electromagnetic actuator assembly and the hydraulic assembly are connected with one another indirectly or directly, wherein the electromagnetic actuator assembly includes an actuator housing and a friction or form locking connection of the electromagnetic actuator assembly with the hydraulic assembly is provided by an ultrasonic weld between the actuator housing and the valve housing.

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 cam phaser including a rotor; and a stator, wherein the rotor is rotatable relative to the stator about a rotation axis of the rotor, wherein a blade of the rotor is arrangeable at various positions between two bars of the stator, wherein an intermediary space formed between the two bars is divided by the blade of the rotor into a first pressure cavity and a second pressure cavity, wherein a locking device including a locking bolt that is spring loaded by a preload element and by a locking disc is configured to lock the stator with the rotor, wherein the preload element includes a spring force for locking, wherein the locking bolt is received axially movable in a receiving opening that is flowable by a hydraulic fluid and that is oriented in a direction of a longitudinal axis of the receiving opening that is formed in the rotor.

Abstract: A cam phaser for a cam shaft arrangement including an inner cam shaft and an outer cam shaft arranged concentrical relative to the inner cam shaft, the cam phaser including at least one rotor; at least one stator; and at least one compensation element configured to compensate axial and/or radial and/or angular tolerances, wherein the stator is connectable torque proof at least indirectly through a drive gear with the outer cam shaft and the rotor is connectable torque proof with the inner cam shaft, wherein the drive gear is separate from the stator and attachable torque proof at the outer cam shaft, wherein the stator is rotatably supportable on the inner cam shaft, wherein plural compensation elements are provided which are arranged evenly distributed in a circumferential direction, wherein the compensation elements are configured torsion stiff in the circumferential direction and attached between the stator and the drive gear.

Abstract: A cam phaser including a stator that is driven by a crank shaft of an internal combustion engine; and a rotor that is connectable torque proof with a cam shaft of the internal combustion engine and that includes plural blades that protrude radially outward from a rotor hub, wherein operating chambers arranged between the stator and the rotor are divided into pressure cavities by the blades, wherein the stator and the rotor are configured as sintered components, wherein displacement recesses are provided on axially configured faces of the stator and/or of the rotor wherein material is configured to flow into the displacement recesses during a deforming finishing of the faces.

Abstract: A hydraulic valve including a valve housing including a longitudinal axis, a receiving opening extending along the longitudinal axis, a first flow through opening of a supply connection, a second flow through opening of an operating connection, a third flow through opening of a tank connection, wherein the first flow through opening, the second flow through opening and the third flow through opening are configured at least partially flowable by a hydraulic fluid flowing through the valve housing, and a valve piston with a control groove which valve piston is axially displaceable in the valve housing in the receiving opening along the longitudinal axis, wherein the flow forces of the hydraulic fluid imparted upon the valve piston are oriented away from a first switching position of the hydraulic valve where the hydraulic fluid flows from the first flow through opening into the second flow through opening.

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 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.