Patent · US Active

Method for operating a drivetrain of a motor vehicle

US7998025B2 · kind B2 · utility

0Cited by

17References

7Claims

0Family size

Assignee

ZF FRIEDRICHSHAFEN AG · DE

Inventors

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

Key dates

Filing date	Sep 28, 2010
Grant date	Aug 16, 2011
Priority date	—
Expiry date	Sep 28, 2030

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10S903/946
WIPO fieldTransport
WIPO sectorMechanical engineering

Abstract

A method for operating a drivetrain of a motor vehicle having in the force flow direction and in the following order an internal combustion engine, a clutch, an electric motor, a transmission and an axle gearset, or an internal combustion engine, a clutch, an electric motor, a transmission input shaft, a transmission and an axle gearset. The electric motor is used for pre-lubricating and warming the transmission such that, with the vehicle clutch disengaged, the lubricant pump of the transmission is driven by the electric motor so bearings are supplied with lubricant before the engine is started, and the heat, produced by splashing the lubricant, additionally warms the transmission.

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