Zf Sachs Ag

Zf Friedrichshafen Ag

Mannesmann Sachs Ag

Horst Breier

Christoph Sasse

Erwin Wack

Peter Frey

Georg Mencher

Ralf Rönnebeck

Jürgen Dacho

Bernd Schöder

Jörg Sudau

Thomas Bauer

Roland Illig

Rudiger Hinkel

Uwe Dehrmann

Hermann Schleicher

A torsional vibration damper for a bridging clutch of a hydrodynamic clutch arrangement is provided with a drive-side transmission element and a takeoff-side transmission element, which can be deflected around a certain angle of rotation relative to the drive-side element against the action of energy storage devices, where at least one driver element with an actuating function is assigned to each energy storage device. To realize a multi-stage action of the energy storage device, at least some of these driver elements arrive in working connection with an assigned final turn of the corresponding energy storage device only after using up a predetermined clearance gap in the circumferential direction. For this purpose, at least one transmission element has openings to accommodate energy storage devices, and at least one circumferential boundary of each opening is provided as a driver element for the assigned energy storage device. In the absence of any relative rotational deflection of the transmission elements, at least one of the circumferential boundaries of some of the openings is separated from the adjacent final turn of the assigned energy storage device by a predetermined angular gap. The predetermined angular gap is used up only after the transmission elements have rotated a predetermined relative distance, at which point the corresponding circumferential boundary acts as the driver element on the adjacent final turn of the assigned energy storage device.

Torsional vibration damper

A torsional vibration damper for a lockup clutch of a hydrodynamic clutch arrangement is provided with a drive-side transmission element and a driven-side transmission element which can deflect around a rotational angle relative to each other against the action of energy accumulators. The transmission elements have recesses for receiving an energy accumulator, respectively, which can be supported by its respective end coils at respective circumferential ends of the recess. The circumferential ends of every recess are oriented, respectively, substantially along a first connection line to a first center of curvature. However, the circumferential end coils of every energy accumulator are oriented substantially along a second connection line to a second center of curvature in the absence of a relative rotational deflection of the transmission elements. The second connection line is oriented at an initial set angle relative to the first connection line. At the start of a relative rotational deflection of the transmission elements until reaching a predetermined limiting relative rotational deflection, a change in the set angle between the second connection line and the first connection line to a final set angle is initiated at the respective end coil of every energy accumulator. The end coils of every energy accumulator undergo at least substantially no further change in the final set angle when a relative rotational deflection exceeds the predetermined limiting relative rotational deflection.

A device for coupling a housing arrangement of a clutch device, particularly a hydrodynamic clutch device, to a rotor arrangement of an electric machine, wherein the rotor arrangement can be connected to a drive shaft so as to be fixed with respect to rotation relative to it, this drive shaft being rotatable around an axis of rotation. The electric machine further has a stator arrangement which can be brought into electromagnetic interaction with the rotor arrangement and the drive shaft can be driven in rotation by the electric machine and/or electrical energy can be generated by rotation of the drive shaft. First teeth provided at the rotor arrangement and second teeth provided at the housing arrangement are in a rotational driving engagement with one another or can be brought into a rotational driving engagement with one another, and an axial securing arrangement holds the rotor arrangement in axial direction with respect to the housing arrangement. The axial securing arrangement includes at least one catch member with at least one radially resilient catch projection at a structural component of one of the rotor arrangement and housing arrangement and has a catch recess associated with each catch projection at a structural component of the other of the rotor arrangement and housing arrangement.

Device for coupling a housing arrangement of a coupling device to a rotor arrangement of an electric machine

A bridging clutch is installed in a fluid medium-filled housing of a hydrodynamic coupling device located between a drive shaft and a transmission input shaft, the coupling device also containing a pump wheel and a turbine wheel. The bridging clutch is provided with a piston, which, when moved into a first axial position, brings at least one friction element into working connection with at least one friction surface, and when moved into a second axial position, at least partially releases this working connection, and with a torsional vibration damper, which is designed with at least one drive element and with at least one takeoff element, at least one of which has openings for circumferential springs and actuating areas for these springs. At least one of the takeoff elements acts a carrier element for the turbine wheel, which is held otherwise without radial support in the housing. At least one of these elements, namely, either the drive element or the takeoff element, has at least one radial area which is brought up in the axial direction essentially without play to the other one of the elements in question, which radial area serves as axial support for the positioning of the turbine wheel in this direction with respect to the housing of the coupling device.

Bridging clutch

A hydrodynamic clutch device for a hydrodynamic torque converter includes a turbine wheel for rotation about an axis of rotation. The turbine wheel is connected by a lockup clutch arrangement for transmitting torque to a housing arrangement. The turbine wheel includes a turbine wheel shell for housing turbine wheel blades. The turbine wheel shell is operably connected by a torsional vibration damper arrangement for transmitting torque. The torsional vibration damper arrangement includes a first transmission element coupled with the lockup clutch arrangement and the turbine wheel shell and includes a second transmission element coupled with the first transmission element for transmitting torque by means of a damper element arrangement; and wherein the first transmission element is supported at the housing arrangement in a first direction by a bearing arrangement.

Hydrodynamic clutch device

A torsional vibration damper for a hydrodynamic torque converter is provided with at least one input part and an output part, which is given the ability to move relative to the input part by stored-energy elements, where the output part is designed as a hub disk, which is connected nonrotatably to a hub centered on a transmission input shaft. The hub disk extends radially inward to the area of the outside circumference of the hub, where it is connected directly to the hub.

Torsional vibration damper for a hydrodynamic torque converter

A lockup clutch for a torque converter has an axially displaceable piston for transmitting a torque from the drive side to the driven side of the torque converter. The piston is connected with a turbine wheel via a torsional vibration damper. The torsional vibration damper has an input part connected with the piston so that the input part is fixed with respect to rotation relative to the piston and an output part connected with the turbine wheel so that the output part is fixed with respect to rotation relative to the turbine wheel. The torsional vibration damper also has a plurality of torsional damper springs arranged between the input part and the output part and distributed along a circumference of the torque converter so that the input part is rotatable relative to the output part along a determined angular area. Each torsional damper spring has an individual cover plate connected directly with the turbine wheel and an axial securing device arranged for fixing the torsional damper springs in their axial position.

Lockup clutch for a torque converter

A lockout clutch on a torque converter includes an axially deflectable piston through which torque can be transmitted from the drive side of the torque converter to its output side. The lockout clutch also has a torsional vibration damper having an input part connected to the piston and an output part connected to the turbine wheel of the torque converter. One of the input part and the output part includes a cover element with control elements for energy storage devices acting on the torsional vibration damper on at least one radial support of the cover element. The control elements are designed to project into the cover element with a depth at which the associated energy storage devices rests on a control element along substantially the extension width in the contact area of the control element. The control elements are also designed to avoid penetration to the axial support at least at the point where the other of the input and output elements engages the energy storage elements. This engagement occurs with substantially axial projections, on which axial securing devices to retain the energy storage devices are provided. The axial projection are designed so that pressurization of the energy storage devices is ensured over their entire width in the axial extension direction of the axial projections.

Growing community of inventors

Dittelbrunn, Germany

Horst Breier