Zf Friedrichshafen Ag

Karl Grad

Gerhard Bailly

Jurgen Pohlenz

Thomas Ratzmann

Stefan Beck

Michael Wechs

Raphael Himmelsbach

Martin Rattay

Jürgen Pohlenz

Juergen Pohlenz

A gear unit for a compound transmission has a planetary stage that couples an input and an output shaft for different transmission ratios. The planetary stage includes a sun gear, a ring gear and planet gears rotatably supported at a planet carrier. The planet gears have a region with two different toothings arranged axially offset with respect to an axis of rotation of the planetary stage. A meshing engagement with a first sun gear and/or a first ring gear is produced via the first toothing. The planet gears mesh at the second toothing with a second sun gear and/or a second ring gear, and one component of the planetary stage is connected to the input shaft to be fixed with respect to rotation and one component is fixed at a housing, while the rest of the components can be coupled with the output shaft, respectively.

Gear unit for a compound transmission

A continuously variable transmission device () has a power split which takes place in the area of a sum planetary transmission (). A first shaft () of the sum planetary transmission () can be brought into operational connection with a drive engine or machine (). A second shaft () of the sum planetary transmission () can be connected, for continuous variation of the gear ratio, with an electric machine () which itself can be coupled with an electric energy source ().

Continuously variable transmission device having power split

A transmission device () for a vehicle having a variator () that has an axially longer length that the variator () is wider and deeper. The variator () comprises a planetary gear set (), a manual gearbox unit () and a hydraulic system having an oil sump. Following installation in the vehicle, a longitudinal extension of the variator () is oriented at least approximately horizontally.

Transmission device for a vehicle, having a variator

A transmission device for a vehicle () having a variator (), which is configured as a hydrostatic device, of a transverse axial construction that can be adjusted at least in the region of a pivot axis (), a planetary gear set () and a manual gear unit (). The orientation of the pivot axis () of the variator (), following installation in the vehicle, at least approximately corresponds to the orientation of a vehicle vertical axis ().

Transmission device for a vehicle

A transmission device () for a vehicle with a variator (), a planetary gear unit () and a gearshift transmission unit (). The variator () has a length which is greater than a width and a depth of the variator (). When the variator () is installed in position in the vehicle, the length of the variator () is orientated at least approximately diagonally to the length of the vehicle.

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Ruderting, Germany

Karl Grad