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. 21, 2014
Filed:
Sep. 28, 2010
Larry D. Diemer, Clarkston, MI (US);
Scott William Heitzenrater, Orion, MI (US);
James M. Partyka, Clarkston, MI (US);
Victor M. Roses, Ann Arbor, MI (US);
Larry D. Diemer, Clarkston, MI (US);
Scott William Heitzenrater, Orion, MI (US);
James M. Partyka, Clarkston, MI (US);
Victor M. Roses, Ann Arbor, MI (US);
GM Global Technology Operations LLC, Detroit, MI (US);
Abstract
A method of cooling a dual clutch transmission is provided. The transmission has first and second input clutches alternately engagable to transfer torque to an output member along first and second input shafts, respectively, at various speed ratios dependent upon engagement of synchronizers. The method includes determining a currently established speed ratio by determining which of the input clutches and synchronizers are currently engaged and which of the input clutches and synchronizers are currently open. One of the open synchronizers is then engaged during the currently established speed ratio to cause the open input clutch to rotate at a speed greater than the speed of rotation of the engaged input clutch, thereby creating a fan cooling effect.