Zf Friedrichshafen Ag

Michael Heuler

Peter Frey

Alexander Strom

Ralf Fambach

Reinhard Feldhaus

Erwin Wack

Bernhard Sich

Michael Kühner

Alexander Markow

Georg Mencher

Jürgen Ackermann

Gregor Sueck

Peter Hammer

Martin Grumbach

Christian Wickel

Robert Reiser

Peter Wiggen

Horst Zinssmeister

Bernd Reinhardt

Edgar Reinhart

Frank Zerner

Andreas Thiede

Patrick Rediger

Jürgen Dacho

Thomas Adelmann

Christoph Gajda

Claus Umnus

Stefan Mundt

Juraj Cuperka

Mario Kensy

Andreas Grell

Mike Scordino

Ray Hamblin

Oliver Walter

Matthias Münch

Thomas Baier

Carsten Zühl

A starting element () for use, for example, in a drivetrain of a motor vehicle, includes a piston () which divides a first volume () that can be filled with a fluid from a second volume () that can be filled with a fluid, wherein the piston () comprises at least one fluid passage () which allows the fluid at least occasionally to pass through the piston () from the first volume () into the second volume () and/or from the second volume () into the first volume (). The at least one fluid passage () comprises a passage component part () and a receiving opening () in the piston (). The passage component part () is inserted into the receiving opening so that at least one passage opening () is formed which allows the fluid to pass through at least occasionally.

Starting element

A clutch device has a friction transmission element which has a base with at least one friction surface, at least one control element for acting on a damping device, and at least one radial support which cooperates with a stop and has a plurality of lugs which extend at least substantially radially in direction toward the stop and which are at least substantially brought closer to the stop up to a gap before the stop when the friction transmission element is stationary, while, at speed, at least a portion of the lugs comes in contact with the stop. The lugs are connected to the base via a bend which causes an axial offset with respect to the base, the bend allows a displacement of the lugs in direction toward the energy accumulators, and the lugs are completely covered by the stop in an axial extension direction.

Clutch device with a friction transmission element

A hydrodynamic coupling includes a housing coupled to a driveshaft having an impeller and a turbine wheel arranged in the housing driven by the impeller and a first damper arrangement by which the housing is coupled to a driven member by a lockup clutch. The first damper arrangement includes a first torsional vibration damper connected to the lockup clutch that is rotatable around an axis of rotation against the action of a first damper spring arrangement. A second torsional vibration damper is connected to the first torsional vibration damper and rotatable around the axis of rotation against the action of a second damper spring arrangement. The turbine wheel is connected to an intermediate torsional vibration damper region including a first secondary side, a second primary side, a second damper arrangement has a deflection mass carrier connected to the second secondary side.

Hydrodynamic coupling arrangement, in particular a torque converter

A torque transmission includes a housing arrangement drivable around an axis of rotation and filled with fluid and a clutch arrangement between the housing arrangement and a driven member. The clutch arrangement has a first friction surface formation rotatable with the housing arrangement and a second friction surface formation rotatable with the driven member. A clutch piston is movable axially for producing and canceling frictional engagement of the first and the second friction surface formation. A piston carrying element is connected to the clutch piston on the radially inner side for axial movement of the clutch piston. The piston carrying element has in its radially inner end region a first axial supporting area for axially supporting the driven member at the piston carrying element and a second axial supporting area for supporting the piston carrying element at the housing arrangement.

Torque transmission arrangement, particularly hydrodynamic torque converter

A drive system for a motor vehicle comprises a drive unit with a drive shaft and a torque-transmitting assembly, which is to be connected on the drive side to the drive shaft for rotation in common around an axis of rotation (A) and which is to be connected on the takeoff side to a gearbox. The drive-side connection is accomplished by means of an axial plug-in connection arrangement, and the torque-transmitting assembly is supported in at least one axial direction on the gearbox.

Drive system for a motor vehicle

A hydrodynamic torque converter including a housing connectable to a drive element for rotation in common around an axis of rotation, the housing being fillable with a fluid; a pump wheel in the housing; a turbine wheel in the housing and connected to a takeoff element; and a supporting/sealing hub area on an axial side of the housing and facing away from the drive element, the supporting/sealing hub area comprising a first hub element permanently connected to the housing; and a second hub element connected to the first hub element for rotation in common around the axis of rotation, the second hub element being axially movable relative to the first hub element, the second hub element comprising an outside circumference, a sealing surface on the outside circumference, a first axial end facing away from the drive element, and a rotational driver formation at the first axial end.

Hydrodynamic torque converter

A hydrodynamic clutch includes a housing which can be brought into working connection with a drive; a hydrodynamic circuit formed by a pump wheel and a turbine wheel; a torsional vibration damper having a drive side transmission element, a takeoff side transmission element, and at least one energy storage group between the transmission elements; and a bridging clutch including first friction elements connected to the housing and second friction elements connected to the drive side transmission element. A first flow route extends from a first flow passage to the friction elements, and a second flow route extends from the hydrodynamic circuit to a second flow passage. A sealing arrangement cooperates with the drive side transmission element to separate the first flow route from the second flow route.

Hydrodynamic clutch device

A hydrodynamic clutch device includes a pump wheel, a housing connecting the pump wheel to a drive, a turbine wheel connected to a takeoff, the turbine wheel being located in the housing and cooperating with the pump wheel to form a hydrodynamic circuit, and a bridging clutch located in the housing and having a piston located between the hydrodynamic circuit and a pressure space. The piston is movable between an engaged position and a released position. At least one through opening in the piston allows an exchange of clutch fluid between the hydrodynamic circuit and the pressure space regardless of the position of the piston and a non-return valve allows only flow from the hydrodynamic circuit to the pressure space when the clutch is released.

Growing community of inventors

Würzburg, Germany

Michael Heuler