Patent · US Expired

Automatic transmission for motor vehicles

US6966860B2 · kind B2 · utility

17Cited by

9References

8Claims

0Family size

Assignee

ZF FRIEDRICHSHAFEN AG · DE

Inventors

Axel Heitmann · Friedrichshafen, DE
Ralf Dreibholz · Meckenbeuren, DE
Gerhard Gumpoltsberger · Friedrichshafen, DE

Key dates

Filing date	Aug 12, 2002
Grant date	Nov 22, 2005
Priority date	—
Expiry date	Nov 14, 2022

Classification

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

Abstract

An automatic transmission for motor vehicles (1) comprising a drive shaft (2) that can be linked with an internal combustion engine and an output shaft (3) that can be linked with at least one motor vehicle axle. Furthermore, it suggests a manual shiftable transmission (4) that comprises a first and a second planetary gear set (5, 6), several shift elements (7, 8, 9, 10, 11, 19) as well as an electric engine (14), which is provided as a starter/generator and/or for the continuous adjustment of the shiftable transmission (4) and/or for the at least partially electric driving operation of a motor vehicle. Pursuant to the invention the electric engine (14) can be connected to a first and/or a second shaft of the first planetary gear set (5) by means of two additional shift elements (12, 13).

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