Patent · US Active

Drive unit for a motor vehicle having a hybrid drive

US7384371B2 · kind B2 · utility

5Cited by

5References

6Claims

0Family size

Assignee

Bayerische Motoren Werke Aktiengesellschaft · DE

Inventors

Johannes Liebl · Moosburg an der Isar, DE
Michael Bertram · Borgo San Lazzaro, DE

Key dates

Filing date	Mar 15, 2007
Grant date	Jun 10, 2008
Priority date	—
Expiry date	Mar 15, 2027

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10S903/945
WIPO fieldTransport
WIPO sectorMechanical engineering

Abstract

A drive unit for a motor vehicle having a hybrid drive, includes an internal-combustion engine, an electrical rotating machine with a pertaining energy accumulator, a transmission unit, and a control unit. The transmission unit includes at least one starting gear position which can be operated only and exclusively when defined conditions exist during a starting operation from the stationary position of the vehicle. For this purpose, the control unit is constructed such that, as a function of the charge condition of the energy accumulator, the starting operation takes place in a standard gear position of the first ratio, or the starting operation takes place in the starting gear position with a ratio of the transmission unit different from the first ratio.

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