Patent · US Active

Transmission device

US8419579B2 · kind B2 · utility

3Cited by

8References

8Claims

0Family size

Assignee

ZF FRIEDRICHSHAFEN AG · DE

Inventors

Thomas Rosemeier · Meckenbeuren, DE
Bernd-Robert Hohn · Kösching, DE
Christoph Pelchen · Tettnang, DE

Key dates

Filing date	Dec 8, 2008
Grant date	Apr 16, 2013
Priority date	—
Expiry date	Feb 5, 2030

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02T10/62
WIPO fieldMechanical elements
WIPO sectorMechanical engineering

Abstract

A transmission device, for a motor vehicle, with at least two drive output shafts and two multi-shaft planetary gearsets in active connection with one another. A shaft of a planetary gearset is actively connected with an output shaft and is shifted, between first and second power paths, such that in the first power path, torque of an electric machine is transmitted in equal parts and with the same sign to the output shafts, and in the second power path, torque is transmitted in equal parts but with different signs. One of the two planetary gearsets is made as a four-shaft, reduced coupling transmission with two sun gears and a common planetary gear carrier with radially inner and outer planetary gears that mesh with one another, and which are engaged, on the one hand, with the sun gears and, on the other hand, with a rotationally fixed ring gear.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.