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:
Jan. 27, 2009
Filed:
Jul. 06, 2006
Applicants:
Fadi S Kanafani, Windsor, CA;
P Brian Mcgrath, Chelsea, MI (US);
Inventors:
Fadi S Kanafani, Windsor, CA;
P Brian McGrath, Chelsea, MI (US);
Assignee:
Chrysler LLC, Auburn Hills, MI (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B60W 10/04 (2006.01); B60W 10/10 (2006.01); G06F 17/00 (2006.01); G06F 19/00 (2006.01); G06F 7/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
This invention provides a method for controlling a gear ratio in an automatic transmission of a vehicle. The method includes detecting a desired engine braking condition associated with the vehicle. Once the engine braking condition is determined, a decay factor is determined for reducing the gear ratio of the transmission. The decay factor maintains the gear ratio for a delayed period of time before gradually reducing the gear ratio over time. After determining the decay factor, the gear ratio of the transmission is controlled in accordance with the decay factor.