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:
Feb. 24, 2015
Filed:
Oct. 14, 2013
GM Global Technology Operations Llc, Detroit, MI (US);
Paul Otanez, Troy, MI (US);
Randall B. Dlugoss, Royal Oak, MI (US);
GM Global Technology Operations LLC, Detroit, MI (US);
Abstract
The method can control an automatic transmission and includes the following steps: (a) determining, via a controller, an initial gear ratio of the automatic transmission based on a gear shift map while the vehicle is solely driven by an electric motor-generator; (b) identifying a plurality of potential clutches of the automatic transmission based on the initial gear ratio; (c) determining a temperature of a transmission fluid; (d) determining which of the potential clutches has a largest fill time in order to identify at least one of a plurality of target clutches; (e) determining, via the controller, a target gear ratio of the automatic transmission based on at least one identified target clutch; (f) transferring sufficient transmission fluid to at least one identified target clutch to reach a pressure threshold in the target clutches.