Patent · US Active

Method for operating a drive train of a vehicle

US8251867B2 · kind B2 · utility

3Cited by

5References

18Claims

0Family size

Assignee

ZF FRIEDRICHSHAFEN AG · DE

Inventors

Ulrich Reith · Schlier, DE
Mario Steinborn · Friedrichshafen, DE

Key dates

Filing date	Jan 25, 2008
Grant date	Aug 28, 2012
Priority date	—
Expiry date	Jul 23, 2029

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF16H2061/0422
WIPO fieldMechanical elements
WIPO sectorMechanical engineering

Abstract

A method for operating a drive train of a vehicle in which the drive train has at least an internal combustion engine, an engine clutch, an electric machine, a single and a multi-group manual transmission with synchronized and/or unsynchronized shift elements for shifting gears, an axle transmission, as well as an associated control device for controlling the gear shifts. It is provided for the purpose of expanding the functional possibilities, that the electric machine is used, during gear shifts in the manual transmission, as a mode of synchronization, a synchronization aid, or at least as a shifting aid such that changes in the direction of rotation of the transmission shafts are taken into consideration.

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