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:
Apr. 30, 2013
Filed:
Nov. 08, 2006
Markus Noll, Worms, DE;
Markus Noll, Worms, DE;
GM Global Technology Operations LLC, Detroit, MI (US);
Abstract
A control system that prevents an electric vehicle from increasing its speed on a downhill gradient by providing regenerative braking through a traction motor. The system includes an enable circuit that provides an enable signal if certain criteria are met, such as a brake pedal and an acceleration pedal being inactive. The system further includes a controller that is enabled by the enable signal, and receives a vehicle speed signal of the speed of the vehicle. The system also includes a switch that receives the enable signal and the vehicle speed signal. When the enable circuit provides the enable signal, the switch provides a speed set-point to the controller for the last vehicle speed. If the vehicle speed signal goes above the speed set-point, the controller outputs a regenerative braking torque command to the traction motor to reduce the speed of the vehicle to the speed set-point.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile