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:
Aug. 07, 2007
Filed:
Feb. 09, 2005
John F. Larsen, Campbellcroft, CA;
Gene Dimarco, Cobourg, CA;
Timothy J. Hartrey, Brighton, MI (US);
Tom C. Ender, Behtany, CA;
John F. Larsen, Campbellcroft, CA;
Gene Dimarco, Cobourg, CA;
Timothy J. Hartrey, Brighton, MI (US);
Tom C. Ender, Behtany, CA;
General Motors Corporation, Detroit, MI (US);
Abstract
A method of preventing undesirable vehicle behavior in a vehicle torque control system that includes determining an expected axle torque based on a vehicle speed, a powerplant profile, an accelerator pedal position and/or a cruise control signal. The method also includes estimating an actual axle torque of a powerplant based on a powerplant maximum torque, a throttle position and powertrain inefficiencies and converting the expected axle torque to an expected acceleration and the actual axle torque to an actual acceleration based on a wheel radius and a road load. The method further includes regulating a torque output of a powerplant when a rate-of-change in a difference between the expected acceleration and the estimated actual acceleration is greater than a first threshold.