Abstract: A stator (20) for a camshaft adjuster (4). The stator (20) has an outer part (50) for concentrically holding a rotor (22) with vanes (34) arranged around the rotor (22) and a segment (52) projecting from the outer part (50) for engaging between two vanes (34) of the rotor (22), in order to form, together with the two vanes (22), pressure chambers (44) of the camshaft adjuster (4). Here, the segment (52) has a cavity (70) for holding a hydraulic fluid from the pressure chambers (44).

Abstract: A camshaft adjustor (4), for an internal combustion engine (2), the camshaft adjustor having a stator (20), a rotor (22) which is rotatably accommodated in the stator (20), a pressure chamber (44) for adjusting the rotor (22) in relation to the stator (20) and a volume reservoir (70) for equalizing a negative pressure in the pressure chamber (44) via a channel (88) between the pressure chamber (44) and the volume reservoir (70). A non-return valve (72) having a closure part (102) for blocking a channel (88) which opens a volume reservoir (70) into a pressure chamber (44) in a camshaft adjustor (4), wherein the non-return valve (72) is formed of a metal sheet and the closure part (102) is realized so as to be movable in a recess (98) of the metal sheet (92) with two oppositely situated ends (94, 96) which are bent toward each other.

Abstract: A control device for hydraulic media with a control valve, in particular, a proportional valve that has a sleeve housing provided with radial openings, wherein at least one pressurized flow feed line, at least one control line, and at least one return line are connected to the openings, and the opening for the pressurized flow feed line is connected to a ring-shaped groove, with a control slide that has control edges and is supported in the sleeve housing so that it can move in the axial direction and is actuated by an electromagnetically constructed control unit, advantageously for controlling a phase adjustment device for the variable adjustment of the control times of gas exchange valves of a reciprocating piston internal combustion engine. A non-return valve is installed in the pressurized flow feed line or in the ring-shaped groove that is arranged in the sleeve housing.

Abstract: A camshaft adjuster (4) for a camshaft (12) of an internal combustion engine (2). The camshaft adjuster (4) includes a stator (20), a rotor (22) accommodated concentrically in the stator (20) and rotatable with respect to the stator (20) about an axis of rotation (78), and a volume reservoir (70) for receiving a hydraulic fluid from a pressure chamber (44) formed between the rotor (22) and the stator (20), wherein the volume reservoir (70) has an outlet (76) in a direction of the axis of rotation (78).

Abstract: A central valve (1) of a camshaft adjuster (2), which has an additional hydraulic fluid passage, which is independent of the other hydraulic fluid passages to the other ports and does not communicate therewith.

Abstract: A finger follower having an inner and outer body and a torsional lost motion spring acting between the bodies is provided. A roller cam follower is connected to the inner body. The inner body is switchable from a fixed state, in which it moves with the outer body to transfer a cam lift to a valve stem, to a released state, in which the inner body can move relative to the outer body so that the cam lift is not transferred to the valve stem. A separate valve pallet that acts on the valve stem is press fit or otherwise rotationally fixed on a pivot pin connecting the inner and outer bodies.

Abstract: A cover (4) for covering an axial side of a rotor core (6) that is arranged in a camshaft adjuster (50) and has a passage bore (28) for holding a locking pin (30) with which the rotor core (6) can be secured against rotation relative to a stator (54) of the camshaft adjuster (50). The specified cover includes a base body (8) for axially covering at least one area of the rotor core (6) with the passage bore (28) and a support element (38) that is arranged on the base body (8) for the axial counter support of the locking pin (30).

Abstract: A radial cage in which side rings have a material thickness of a starting material for the radial cage, straight side sections of each axial crossbar are implemented with a greater material thickness that increases their strength, and an axial center section of each axial crossbar is implemented with a smaller material thickness than the material thickness of the side rings, thus reducing centrifugal mass.

Abstract: A radial cage in which roll forming is carried out in such a manner that straight side sections of all axial crossbars continue to have at least approximately a material thickness of a starting material for the radial cage, while side rings of the radial cage and axial center sections of the axial crossbars are implemented by rolling down during roll forming to each have material thicknesses that are smaller than the material thickness of the straight side sections and that reduce their centrifugal mass.

Abstract: A camshaft adjuster (1) is disclosed that has a spring (4) that is supported by spring supports (5), and these spring supports (5) have lubricant reservoirs (6) for the lubrication of the contact area between the spring wire (10) and the spring support (5).

Abstract: A camshaft adjuster (1) is provided with a restoring spring (4) having a spring end (6) for support on the driven element (3) that has a wavelike shape.

Abstract: A wrap-around braking device for a planetary gear train, having at least one wrap-around element, with first and second cam devices, and is designed to wrap around at least one ring gear of the planetary gear train for braking engagement. A shift fork, which can be moved in the axial direction of the shift fork and which has first and second actuating elements that act oppositely in the axial direction and which is mounted in a rotationally fixed manner in a housing that has at least first and second stops in the axial direction. For braking engagement on the ring gear, which rotates in a first rotational direction, the shift fork can be moved in a first axial direction such that the first actuating element interacts with the first cam device, while the second stop opposite the first actuating element in the axial direction interacts with the second cam device.

Abstract: Method for determining wear of a friction plate of an automatically actuated friction clutch, particularly in a motor vehicle driven by an internal combustion engine, wherein initially at a prescribed clutch slip and a prescribed clutch torque in an earlier friction lining test point an earlier clutch actuation travel is determined and stored, later again at the prescribed clutch slip and the prescribed clutch torque in a later friction lining test point a later clutch actuation travel is determined, thereafter the earlier clutch actuation travel and the later clutch actuation travel are compared to each other and a differential value is determined, and thereafter a friction lining wear is determined using the differential value, in order to reliably determine friction lining wear in a time interval and with only little effort, so that a depreciation of function due to a worn friction lining can be prevented in a timely manner.

Abstract: A camshaft adjuster (1), which has a cover element (4), which has at least one deformation zone (7), which, when the cover element (4) is assembled with the input element (2) or the output element (3), is deformed in such a way that a preloading force acts, pressing the cover element (4) and the input element (2) or output element (3) against one another.

Abstract: A mass compensating shaft drive for compensating forces or moments of inertia of a reciprocating piston internal combustion engine is provided having a balance shaft supported by at least one journal in a housing of the internal combustion engine. A rolling bearing is located between each of the at least one journals and the housing. The balance shaft includes an oil gallery that is adapted to be connected to a source of pressurized lubricating oil. A check valve is located between the oil gallery and each of the at least one bearing journals, with the check valve being arranged to open upon at least one of a lubricating oil pressure or a centrifugal force generated through rotation of the balance shaft exceeding a predetermined closing force for the check valve.

Abstract: The invention relates to a friction clutch in a motor vehicle, comprising a clutch bell housing (210), at least one air inlet duct (130) arranged on the clutch bell housing for cooling the clutch bell housing, at least one air outlet duct (140) arranged on the clutch bell housing, and at least one temperature sensor (120). The invention further relates to a method for determining a clutch temperature of a friction clutch.

Abstract: The present invention relates to a hybrid module with fastening means for fastening, for example, detachable fastening, of the hybrid module with a torque transfer device, such as a torque converter or a clutch, such as a dual clutch, where the hybrid module includes a drive shaft that can be connected to an internal combustion engine and can rotate around a rotary axis and an electric motor with a stator, a rotor, and a power take-off component that can be connected to the rotor and where the torque transfer device has a transfer component for connecting to the hybrid module, where the fastening means axially secure the power take-off component with respect to the transfer component and can produce the connection between fastening means and transfer component.

Abstract: A clutch assembly, including: a secondary piston assembly; a primary piston including a portion located radially outward of the secondary piston assembly; a first chamber at least partially formed by a first side of the primary piston; a second chamber at least partially formed by the secondary piston assembly and a second side of the primary piston; and a check valve connecting the first and second chambers. For a first force applied by fluid in the first chamber: the primary piston remains axially stationary; the fluid flows from the first chamber into the second chamber; and the secondary piston assembly displaces in a first axial direction to contact a clutch pack. For an increase of the first force to a second force: fluid flow between the first and second chambers is blocked by the check valve; and the primary piston and the secondary piston assembly displace in the first axial direction to close the clutch pack.

Abstract: Planetary roller gear drive with a spindle nut (1) that is arranged on a threaded spindle (2) and with a plurality of planets (3) that are arranged distributed around the periphery and are in rolling engagement with the threaded spindle (2) and the spindle nut (1). The threaded spindle (2) has a plurality of helical windings wound around the spindle axis forming at least one thread groove (8), and a sensor element (15) is arranged so that it cannot move in the axial direction relative to the spindle nut (1) and detects an axial displacement of the threaded spindle (2) and the spindle nut (1) relative to each other. The spindle nut (1) is supported so that it can rotate about the spindle axis on a housing (12) with the sensor element (15).

Abstract: An actuating device for exerting a force that causes two components arranged to be rotatable relative to each other about an axis of rotation to be urged axially away from each other comprising a radial support element forming a first hydraulic pressure chamber and a second hydraulic pressure chamber, each of the pressure chambers surrounding the axis of rotation and the first pressure chamber being in fluid connection with the second pressure chamber. The actuating device further comprises a first piston axially supported on the first component for sealing the first pressure chamber in an axially displaceable way and a second piston axially supported on the second component for sealing the second pressure chamber in an axially displaceable way.