Patent · US Active

Control method and control unit for a vehicle drivetrain

US11585430B2 · kind B2 · utility

0Cited by

5References

12Claims

0Family size

Assignee

ZF FRIEDRICHSHAFEN AG · DE

Inventors

Michael Sauter · Santa Clara, US
Markus Eisele · Friedrichshafen, DE
Martin Dietrich · Rieden, DE
Franz Bitzer · Friedrichshafen, DE

Key dates

Filing date	May 15, 2020
Grant date	Feb 21, 2023
Priority date	—
Expiry date	Feb 11, 2041

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02T10/62
WIPO fieldTransport
WIPO sectorMechanical engineering

Abstract

A method for operating a motor vehicle that has an internal combustion engine and an automated manual transmission, connected between the engine and a drive output. The transmission includes a shifting element group with a plurality of shifting elements. The transmission further includes an oil pump and an electric machine, both of which are integrated in the transmission and coupled to an input shaft of the transmission. The oil pump delivers a flow of transmission oil for cooling the shifting element group and cooling the electric machine, and the shifting elements of the shifting element group are controlled and shifted by an actuator system that is independent of the oil pump. When the motor vehicle is at rest, the oil pump is driven by the electric machine in order to cool the electric machine while the motor vehicle is at rest.

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