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:
Dec. 20, 2005
Filed:
Dec. 22, 2004
Gang Chen, Rochester Hills, MI (US);
David L Kwapis, Auburn Hills, MI (US);
Aaron Pfadt, Salt Lake City, UT (US);
Gang Chen, Rochester Hills, MI (US);
David L Kwapis, Auburn Hills, MI (US);
Aaron Pfadt, Salt Lake City, UT (US);
DaimlerChrysler Corporation, Auburn Hills, MI (US);
Abstract
A transmission control method improves shift feel during kickdown shifts. The release clutch is fully released at the initiation of the kickdown shift. The release clutch is then reapplied when the volume of the release clutch reaches a threshold capacity. The volume of the release clutch is slowly ramped down, thereby increasing turbine speed. When the turbine speed reaches a threshold, the apply clutch is actuated. The apply clutch is actuated by controlling the volume of the apply clutch according to a target volume.