Patent · US Expired

Method for controlling a motor vehicle having an electric drive mechanism

US6313592A · kind A · utility

1Cited by

4References

1Claims

0Family size

Assignee

ZF FRIEDRICHSHAFEN AG · DE

Inventors

Thomas Voss · Stuttgart, DE
Bernd Müller · Moers, DE
Bert Hellwig · Friedrichshafen, DE
Gerald Karch · Friedrichshafen, DE
Werner Wolfgang · Ravensburg, DE

Key dates

Filing date	Oct 18, 2000
Grant date	Nov 6, 2001
Priority date	—
Expiry date	Oct 18, 2020

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02T10/72
WIPO fieldTransport
WIPO sectorMechanical engineering

Abstract

The invention relates to a method for controlling a motor vehicle having electric drive mechanism, especially a city autobus, in which one or more wheels are driven by one electric motor and which is provided with an electric brake and a control circuit, wherein when a first defined threshold value (1) of the rotational speed (n) of the electric motor is exceeded, the drive torque (m) is cut back and is reduced down to zero when the rotational speed (n) continues to increase, and that when a second defined threshold value (3) of the rotational speed (n) which is higher than the first threshold value (1) is exceeded, the electric brake is engaged and as the rotational speed increases exerts a maximum brake torque when a limit value (4) is reached.

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