Patent · US Active

Method for the actuation of at least two clutches transmitting torque in parallel in the drive train of a motor vehicle and transmission control unit

US7488272B2 · kind B2 · utility

5Cited by

2References

29Claims

0Family size

Assignee

VOLKSWAGEN AKTIENGESELLSCHAFT · DE

Inventors

Edgar Bothe · Peine, DE
Andreas Schwenger · Friedrichshafen, DE
Wolfgang Schreiber · Stuttgart, DE

Key dates

Filing date	Aug 17, 2006
Grant date	Feb 10, 2009
Priority date	—
Expiry date	Feb 26, 2027

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF16H2312/02
WIPO fieldTransport
WIPO sectorMechanical engineering

Abstract

A method actuates two clutches which transmit torque in parallel in a drive train of a motor vehicle and have different successive fixed speed transmissions as gear stages between a drive shaft and an output shaft. The clutches are triggered during acceleration processes of the motor vehicle that both clutches simultaneously transmit torques and a resulting transmission of torque takes place continuously between the drive shaft and the output shaft. The rotational speed of the drive shaft is greater than the respective rotational speed of the respective transmission input shaft of the respective partial train at the secondary end of the respective clutch during the entire starting process, or the rotational speed of the drive shaft is greater than or the same as the respective rotational speed of the respective transmission input shaft of the respective partial train at the secondary end of the respective clutch during an acceleration process.

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