Patent · US Active

Drive train

US7806800B2 · kind B2 · utility

3Cited by

4References

9Claims

0Family size

Assignee

Daimler AG · DE

Inventors

Norbert Ebner · Ludwigsburg, DE
Andreas Schondelmaier · Marbach am Neckar, DE

Key dates

Filing date	Jan 19, 2007
Grant date	Oct 5, 2010
Priority date	—
Expiry date	Jul 6, 2028

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10S903/93
WIPO fieldTransport
WIPO sectorMechanical engineering

Abstract

In a drive train and a method for operating the drive train for a motor vehicle, comprising a hydraulically shiftable transmission unit with an input shaft connectable to an internal combustion engine via a first clutch, a first electric motor, and an oil pump which supplies the transmission unit with pressurized oil and which is driven by the internal combustion engine or by an electric pump motor, the electric pump motor for driving the oil pump is in the form of a sensorless electric motor, and if required, the first electric motor is energized and coupled to the oil pump in order to assist starting the electric pump motor.

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