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:
Feb. 15, 2005
Filed:
Jul. 18, 2003
Mark J. Duty, Goodrich, MI (US);
Timothy a Coatesworth, Lake Orion, MI (US);
Mark J. Duty, Goodrich, MI (US);
Timothy A Coatesworth, Lake Orion, MI (US);
DaimlerChrysler Corporation, Auburn Hills, MI (US);
Abstract
An electronic throttle controller adjusts vehicle acceleration based on accelerator pedal movement. The controller compares a rate of change of a pedal voltage with a rate of change of a filtered pedal voltage. The filtered pedal voltage depends on filter alpha values that vary as a function of engine speed divided by vehicle speed. If the rate of change of the pedal voltage exceeds the rate of change of the filtered pedal voltage by a threshold, the controller selects a performance mode. The performance mode determines how the controller adjusts a transmission ratio and power request damping. Additionally, the controller adjusts a duration of the performance mode based on an acceleration condition. The acceleration condition is indicative of whether engine speed, vehicle speed, and pedal position are constant.