Abstract: A pressure plate is held so as to be movable axially with respect to the housing by means of at least one leaf spring arrangement which is secured in a first coupling area to a first mounting area of the pressure plate and is secured in a second coupling area to a second mounting area of the housing. A contact surface is provided on each mounting area for the contact of the at least one leaf spring arrangement with the first coupling area and the second coupling area. The contact surface in at least one of the mounting areas is inclined relative to a plane (E) extending essentially orthogonal to an axis of rotation (A) of the thrust plate.

Abstract: A gray cast iron alloy for a friction element of a friction clutch, which may be brought into frictional contact with a clutch disk by a friction surface of the friction element, contains: 3.0-3.4 percent by weight C, 1.8-2.3 percent by weight Si, 0.4-0.8 percent by weight Mn, 0.0-0.35 percent by weight P, 0.0-0.125 percent by weight S, 0.4-0.6 percent by weight Mo, with the remainder comprising iron and production-related impurities and/or additives.

Abstract: Guide for the piston rod of a piston-cylinder assembly, especially for a vibration damper, a shock-absorbing strut, or a level-control device. The guide has a guide body with an outer end surface holding a piston rod seal, where the piston rod is installed in the guide and sealed with freedom to move in the axial direction. The piston rod seal has an axial extension opposite the piston-cylinder assembly, which extension is held in an annular recess in the end surface, which recess is spaced from the piston rod and coaxial to the piston rod.

Abstract: A pressure plate assembly for a friction clutch includes a housing arrangement; a pressure plate held in the housing arrangement with freedom to rotate in the same direction as that in which a rotational axis extends; a stored-energy element; and a wear-compensating device, acting in the path of force transmission between the stored-energy element and the pressure plate and/or between the stored-energy element and the housing arrangement, where the wear-compensating device has at least one adjusting element which can be moved in an adjusting direction to compensate for wear and at least one spring element, which pretensions the minimum of one adjusting element for movement in the adjusting direction, where at least certain areas of the minimum of one spring element extend in the circumferential direction relative to the rotational axis, and where the minimum of one spring element is provided with a support arrangement, which passes through at least certain areas of the spring element, the support arrangement

Abstract: A pressure plate assembly for a friction clutch including a housing having an axis of rotation; a pressure plate mounted in the housing with freedom to move axially relative to the housing; a stored-energy element mounted in the housing and transmitting force along a path from the housing to the pressure plate; a wear-compensating device in the path of force transmission, which device has at least one adjusting element free to move in an adjusting direction to compensate for wear; and a clearance-producing arrangement having at least one gripping element, which is attached to the assembly upon which the stored-energy element acts via the wear-compensating device. The minimum of one gripping element has a blocking section, by means of which it can make blocking contact with a blocking element when wear occurs.

Abstract: Switching valve with a valve body, which separates two working spaces filled with a fluid. The valve body has pass-through openings which are covered except for an inlet cross-section, where the inlet cross-section is controlled by a switching disk as a function of the direction of flow in the switching valve. Between the switching disk and the inlet cross-section, at least one spacer disk is provided, which has at least one opening, which communicates with the inlet cross-section, where the opening has a larger two-dimensional area than the inlet cross-section.

Abstract: A pressure plate subassembly for a friction clutch includes a housing connectable to an abutment arrangement for joint rotation about an axis of rotation, a pressure plate arranged in the housing so that the pressure plate is rotatable together with the housing about the axis of rotation (A) and so that the pressure plate is displaceable relative to the housing in the direction of the axis of rotation, and a force accumulator for generating a pressure force, the force accumulator being supported on the housing and on the pressure plate. The force accumulator is arranged outside the housing.

Abstract: A clutch operator arrangement for introducing an actuating force into a friction clutch includes a ball screw arrangement.

Abstract: In an engine connected to an electric machine functioning in particular as a starter-generator, the rotor of the electric machine is connected nonrotatably to the crankshaft, the electric machine has a control unit for controlling the electric machine, and the electric machine also has a device for determining the angular position of the rotor with respect to the stator. So that the crankshaft angle can be determined in a simple, rapid, and reliable manner and in particular so that it can be determined even at the slowest crankshaft rpm's, the current angular position of the rotor is detected by a device for determining the angular position and transmitted to the control unit. The corresponding current crankshaft angle is then determined in the control unit on the basis of the detected rotor angle values. The crankshaft angle determined in this way is transmitted from the control unit of the electric machine to the control unit of the engine.

Abstract: A vane wheel, in particular an impeller wheel or turbine wheel, for a hydrodynamic coupling device includes a shell which is rotatable about an axis of rotation and a plurality of vanes arranged at the shell in circumferential succession. Each of the plural vanes has at least one connection projection inserted into a connection recess provided in the shell. Further, the vanes each have a fastening projection arranged so that the vanes are fixedly connected with the shell in the area of this fastening projections.

Abstract: Friction clutch for use in the drive train of a motor vehicle with an input part, a clutch housing, at least one clutch disk in working connection with a takeoff element, and a pressure plate working together with the input part, the force of a stored-energy element acting on the pressure plate to transmit torque to the clutch disk. The radially outer area of the input part has axially oriented walls extending along at least part of the circumference to cooperate with the pressure plate.

Abstract: A leaf spring arrangement, especially for connecting a pressure plate to a housing, comprises a plurality of adjacent leaf spring elements, where each leaf spring element has a first attachment area for establishing the connection the pressure plate, a second attachment area for establishing the connection to the housing, and a connecting area extending between the first attachment area and the second attachment area. At least certain areas of at least two of the leaf spring elements are spaced apart between their first attachment area and their second attachment area.

Abstract: A damping valve comprising a one-piece damping-valve body with axial through-passages for each direction of flow, at least one side of the damping-valve body having arranged on it at least one valve disk that at least partially covers an outlet opening of a through-passage, the damping-valve body having a radial inflow opening to the through-passages. The outlet openings of the through-passages for a first direction of flow on one side of the damping-valve body have a trapezoidal cross section, and the outlet openings of the through-passages for a second direction of flow on the other side of the damping-valve body open into a common encircling annular channel. The through-passages with outlet openings with the trapezoidal cross section are arranged on a larger pitch circle than the through-passages that open into the annular channel.

Abstract: A pressure plate assembly for a friction clutch includes a housing arrangement and a pressure plate arrangement, which is held by at least one leaf spring arrangement with freedom of axial movement relative to the housing arrangement. The at least one leaf spring arrangement is fixed by a first attachment area to a first fastening area of the pressure plate arrangement and by a second attachment area to a second fastening area of the housing arrangement. The end area of the first fastening area and/or the second fastening area curves away from the minimum of one leaf spring arrangement, this end area being located in the area along which the at least one leaf spring arrangement extends.

Abstract: A thrust plate assembly comprises a housing having a rotational axis, a pressure plate arrangement which is movable axially in the housing arrangement, and at least one coupling arrangement by which the pressure plate is coupled with the housing for transmission of torque, wherein a force component acting axially upon the pressure plate can be generated by the at least one coupling arrangement when the pressure plate is acted upon by rotational force in a first direction with respect to the housing arrangement. The at least one coupling arrangement is connected in a first coupling area thereof with a first coupling portion of the pressure plate and is connected in a second coupling area thereof with a second coupling portion of the housing, wherein the first coupling area and the second coupling area of the at least one coupling arrangement are axially offset relative to one another.

Abstract: A torsional vibration damper is embodied with a drive-side transmission element and an output-side transmission element, one of which is connected to the gear element of a gear active between the two transmission elements. The gear element is placed into movement during relative movements of the two transmission elements. The gear element is effective as the drive for at least one mass associated with it. Upon a position change of the mass relative to the rotational center of the transmission elements, a change occurs in the moment of inertia caused by the mass. The gear element is connected to the mass by a gear device that transforms its movement and/or changes the translation.

Abstract: A drive system that includes a drive shaft, which is or can be brought into torque-transmitting connection with a drive train, a secondary drive system for transmitting torque between the drive shaft and at least one auxiliary unit, and at least one vibration-damping device including a deflection mass carrier with freedom to rotate around a rotational axis and at least one deflection mass, which can shift position relative to the deflection mass carrier in at least one deflection plane. Upon deflection of the at least one deflection mass from the home position relative to the deflection mass carrier, the radial position of the deflection mass changes relative to the rotational axis. At least part of the vibration-damping device can be integrated into part of the secondary drive system.

Abstract: A clutch device within whose housing a first fluid chamber and a second fluid chamber are separated by a piston which is movable by a fluid pressure differential between the fluid chambers. The piston serves to actuate a friction clutch whose friction surfaces are arranged in the first fluid chamber. Fluid can be guided through the first fluid chamber independent from the fluid pressure in the second fluid chamber in order to conduct frictional heat away from the friction clutch and its friction surfaces. For this purpose, fluid passages through which fluid allocated to the first fluid chamber can flow are allocated to the friction surfaces.

Abstract: A drive arrangement for a motor vehicle, having an internal combustion engine with a crankshaft which can be connected, via an interposed clutch, to a gearbox input shaft of a change-speed gearbox, and having an electric machine—for example an electric motor or a starter-generator—which is provided in the drive arrangement and which has a stator and a rotor. The electric machine, in order to step down its rotational speed, is operatively connected to the crankshaft and/or the gearbox input shaft via a step-down gear mechanism. The step-down gear mechanism is designed as an epicyclic gear mechanism, which has a sun gear, an internal gear and a number of planet gears. The epicyclic gear mechanism can be switched or clutch-operated via two clutches.

Abstract: A release slide is or can be connected to a stored-energy element of the clutch assembly for executing a release movement, and at least one brake element can move along with the release slide during the execution of a release movement, which brake element can be brought into braking interaction with a counter-braking element, which is or can be connected in essentially nonrotatable fashion to a clutch output shaft, where the minimum of one brake element can shift position relative to the release slide at least to compensate for the wear which occurs in the area of the clutch assembly. A latching arrangement includes a set of latching teeth on either the release slide or on the brake element, and a latching element on the other of the brake element and the release slide.