Zf Friedrichshafen Ag

Tobias Dieckhoff

Thomas Dögel

Matthias Reisch

Erwin Wack

Andreas Orlamünder

Daniel Lorenz

Wolfgang Grosspietsch

Axel Rohm

Ingrid Hoffelner

Steffen Matschas

Matthias Kram

Bernd Unseld

Tobias Höche

Dennis Egler

Johannes Friess

Christofer Ebert

Angelika Ebert

Lukas Spath

Christoph Sasse

Markus Terwart

Kyrill Siemens

Mathias Kopp

Matthias Arzner

Mathais Kopp

Wolfgang Groasspietsch

A method for transmission of and damping of a mean torque with a superposed alternating torque in a torque transmission arrangement for a powertrain of a motor vehicle having an input and an output. The mean torque with the superposed alternating torque is transmitted along a torque path from the input the output. The input rotates at an input speed and the output rotates at an output speed. A slip arrangement is provided in the torque path between the input and the output for generating a speed slip. The slip arrangement provides a maximum of an external activation of the speed slip in the area of a maxima of at least one periodic oscillation component of an alternating component and provides a minimum of an external activation of the speed slip in the area of a minima of at least one periodic oscillation component of the alternating component (new).

Method for transmitting and dampening torques

A method for the transmission and damping of a mean torque with a superposed alternating torque in an arrangement having an input and an output. The mean torque and superposed alternating torque are transmitted along a path from the input to the output. A slip arrangement is provided in the torque path between the input and the output for transmitting mean torque and superposed alternating torque and for generating a speed slip between an input speed and an output speed in the path. The slip arrangement provides a maximum of an external activation of the speed slip in the area of the maxima of at least one periodic oscillation component of the alternating component and provides a minimum of an external activation of the speed slip in the area of the minima of at least one periodic oscillation component of the alternating component.

Method for transmitting and damping torques

A method for the transmission and damping of a mean torque with a superposed alternating torque having an input and an output. The mean and superposed alternating torque is transmitted along a torque path from the input to the output area. An input speed is a mean speed and a superposed alternating component. A slip arrangement is provided in the torque path between the input and the output for transmitting the mean and superposed alternating torque and generating a speed slip between an input speed and an output speed. The slip arrangement provides a maximum of an external activation of the speed slip in a area of the maxima of at least one periodic oscillation component of the alternating component and provides a minimum of an external activation of the speed slip in an area of the minima of at least one periodic oscillation component of the alternating component.

A torsional vibration damping arrangement for a drivetrain of a vehicle comprises a rotational mass arrangement which is rotatable around a rotational axis A and a damping arrangement fixed with respect to rotation relative to the rotational axis A. A displacer unit is operatively connected to the primary inertia element on the one side and to the secondary inertia element on the other side. The damping arrangement includes a slave cylinder with a working chamber having a volume V2, and the working chamber of the slave cylinder is operatively connected to the working chamber of the displacer unit. The damping arrangement includes a stiffness arrangement and a damper mass, and the slave cylinder of the damping arrangement is operatively connected to the damper mass by a stiffness arrangement.

Torsional vibration damping assembly for a drive train of a vehicle

A torsional vibration damping arrangement has parallel first torque and second torque transmission paths that proceed from an input region, a coupling arrangement that communicates with an output region for superposing the torques conducted via the two paths, and a phase shifter arrangement for generating a phase shift of rotational irregularities conducted via the first torque transmission path relative to rotational irregularities of the second torque transmission path. The planet gear carrier has at least one base element with a first planet gear bearing location and a second planet gear bearing location. The first planet gear bearing location is positioned at the base element on a first pitch circle diameter and the second planet gear bearing location is positioned at the base element on a second pitch circle diameter, and the first pitch circle diameter and the second pitch circle diameter differ from one another.

Torsional vibration damping arrangement for the powertrain of a vehicle

A torsional vibration damping arrangement for the drivetrain of a vehicle has an input region driven in rotation around an axis of rotation A and an output region. A first torque transmission path and a second torque transmission path parallel thereto proceed from the input region. A coupling arrangement communicates with the output region for superposing the torques guided via the torque transmission paths, and a phase shifter arrangement for the first torque transmission path generates a phase shift of rotational irregularities guided via the first torque transmission path relative to rotational irregularities guided via the second torque transmission path. The output region includes the planet gear carrier at which a planet gear is rotatably supported, and the planet gear carrier is connected to the output region to be fixed with respect to rotation relative to it.

Torsional vibration damping arrangement for the drive train of a vehicle

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Würzburg, Germany

Tobias Dieckhoff