The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 06, 2001
Filed:
Oct. 18, 2000
Thomas Voss, Tettnang, DE;
Bernd Müller, Friedrichshafen, DE;
Bert Hellwig, Friedrichshafen, DE;
Gerald Karch, Friedrichshafen, DE;
Werner Wolfgang, Ravensburg, DE;
ZF Friedrichshafen AG, Friedrichshafen, DE;
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 (,) 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 (,) of the rotational speed (n) which is higher than the first threshold value (,) is exceeded, the electric brake is engaged and as the rotational speed increases exerts a maximum brake torque when a limit value (,) is reached.