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:
May. 21, 2013
Filed:
Jul. 26, 2012
Matthew D. Whitton, Howell, MI (US);
Brandon E. Hancock, Farmington Hills, MI (US);
Matthew D. Whitton, Howell, MI (US);
Brandon E. Hancock, Farmington Hills, MI (US);
GM Global Technology Operations LLC, Detroit, MI (US);
Abstract
A method of learning an initial capacity point of a clutch in a dual clutch transmission includes identifying when the dual clutch transmission is operating in a steady state gear condition with a first clutch continuously transmitting torque to a first shaft. When the dual clutch transmission is operating in a steady state gear condition, a second clutch is sequentially positioned in each of a plurality of application positions (P, P, P, . . . , P). The second clutch is configured to transmit torque to a second shaft. The second shaft is positioned in a geared state in each of the plurality of application positions. The first application position (P) in the sequence of application positions in which the second shaft is not successfully positioned in the geared state is defined as the initial capacity point of the second clutch.