Patent · US Active

Twin-clutch transmission for a motor vehicle

US7383749B2 · kind B2 · utility

83Cited by

9References

28Claims

0Family size

Assignee

VOLKSWAGEN AKTIENGESELLSCHAFT · DE

Inventors

Michael Schäfer · Gifhorn, DE
Wolfgang Schreiber · Stuttgart, DE
Fritz Blumenstein · Wolfsburg, DE

Key dates

Filing date	Jul 7, 2006
Grant date	Jun 10, 2008
Priority date	—
Expiry date	Jul 7, 2026

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T74/19288
WIPO fieldMechanical elements
WIPO sectorMechanical engineering

Abstract

A twin clutch transmission for a motor vehicle has two input shafts, two clutches, and driving shafts. The first input shaft can be actively connected to the first clutch, and the second input shaft can be actively connected to the second clutch. The first driving shaft is situated underneath the input shafts and the second driving shaft is situated above the input shafts, or vice versa. The input and driving shafts have intermeshing gear wheels, with fixed gears and loose wheels or idler gears. Each driving shaft has a gear wheel for transferring torque to the axle drive. A further shaft implements the reverse gear RG. A highly versatile and compact transmission is obtained by providing a third driving shaft that has a drive gear wheel for transferring torque to the axle drive, and the drive gear wheels of the driving shafts engage with an axle drive gear.

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