TRANSMISSION DEVICE

WIPO Patent Application WO/2009/080473

A8

The invention relates to a transmission device, especially for motor vehicles, comprising at least two output shafts and two operatively connected multi-shaft planetary gear sets, at least one shaft of one planetary gear set being operatively connectible to an output shaft, and a switching device via which it is possible to switch between the two output shafts between a first power train and a second power train, a torque of an electrical machine being transferred to the output shafts in the region of an additional shaft of one of the planetary gear sets in equal parts and with the same preceding signs when the first power train is switched and in equal parts and with different preceding signs when the second power train is switched. The aim of the invention is to provide a compact transmission device that can be commercially produced in a cost-effective manner. The transmission device is characterized in that one of the two planetary gear sets is designed as a four-shaft, reduced coupling gear comprising two axially juxtaposed sun gears, a common planet carrier having intermeshing radially inner and radially outer planetary gears that engage with the sun gears of a different tooth number and with a non-rotationally arranged internal gear.

PELCHEN CHRISTOPH (DE)
ROSEMEIER THOMAS (DE)
HOEHN BERND-ROBERT (DE)

PCT/EP2008/066978

August 12, 2010

December 08, 2008

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ZAHNRADFABRIK FRIEDRICHSHAFEN (DE)
FORSCHUNGSGESELLSCHAFT FUER ZA (DE)
PELCHEN CHRISTOPH (DE)
ROSEMEIER THOMAS (DE)
HOEHN BERND-ROBERT (DE)

F16H1/46; B60K6/48; B60K6/52; B60K23/04; F16H48/30

ZF FRIEDRICHSHAFEN AG (88038 Friedrichshafen, DE)

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