Patent · US Active

Motor vehicle drive train device comprising a multi-group transmission and shifting method for a multi-group transmission

US9103440B2 · kind B2 · utility

0Cited by

2References

18Claims

0Family size

Assignee

Diamler AG · DE

Inventors

Juergen Hertlein · Waiblingen, DE
Andreas Klaus · Graz, AT
David Ulmer · Schenefeld, DE

Key dates

Filing date	Jan 30, 2013
Grant date	Aug 11, 2015
Priority date	—
Expiry date	Jan 30, 2033

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF16H2306/48
WIPO fieldMechanical elements
WIPO sectorMechanical engineering

Abstract

A motor vehicle drive train device has a multi-group transmission that includes a main group, a front-mounted group upstream from the main group, and/or a downstream group downstream from the main group, and a control/regulation unit. The motor vehicle drive train device is provided for shifting, at least in one transmission gear change operation, the front-mounted group and/or the downstream group into neutral before engaging a target gear in the main group. The control/regulation unit is provided for shifting the front-mounted group and/or the downstream group into neutral in the transmission gear change operation only after at least partial synchronization of the main group.

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