Patent · US Active

Motor vehicle drive train and method for controlling a drive train

US8016717B2 · kind B2 · utility

3Cited by

7References

6Claims

0Family size

Assignee

Daimler AG · DE

Inventors

Norbert Ebner · Ludwigsburg, DE
Pascal Heusler · Stuttgart, DE
Anton Rink · Calw, DE

Key dates

Filing date	Oct 4, 2007
Grant date	Sep 13, 2011
Priority date	—
Expiry date	May 22, 2030

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02T10/92
WIPO fieldTransport
WIPO sectorMechanical engineering

Abstract

In a drive train of a motor vehicle comprising an internal combustion engine, at least one electrical machine which can be operated at least as a motor or as a generator, and a stepped automated manual transmission and at least one control device for controlling the internal combustion engine, the at least one electrical machine (P1, P2) and the stepped automated manual transmission and a method of operating the drive train, a braking torque on the driven wheels is kept approximately constant before, during and after a gear-shifting operation to a gear with a higher transmission ratio so as to avoid any jerks during such down shifting procedure.

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