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:
Nov. 10, 2015
Filed:
Jan. 03, 2014
Ford Global Technologies, Llc, Dearborn, MI (US);
Christopher John Teslak, Plymouth, MI (US);
Gregory Michael Pietron, Canton, MI (US);
Hongtei Eric Tseng, Canton, MI (US);
Yuji Fujii, Ann Arbor, MI (US);
Michael Glenn Fodor, Dearborn, MI (US);
Diana Yanakiev, Birmingham, MI (US);
Seung-Hoon Lee, Northville, MI (US);
Ford Global Technologies, LLC, Dearborn, MI (US);
Abstract
A multiple ratio transmission having an input shaft, an output shaft and oncoming clutch and off-going clutch for effecting ratio upshifts is provided. The transmission also includes a transmission controller configured for controlling shifts. During the torque phase of a ratio upshift, the controller increases input torque. Next, the controller estimates an oncoming clutch target torque. The controller controls a torque input to ensure the off-going clutch remains locked. The controller measures an actual transmission value for a torque transmitting element of the transmission and corrects the oncoming clutch target torque using the actual transmission value whereby an increasing torque for the oncoming friction element is achieved with minimal torque transients along the output shaft during the upshift.