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:
Apr. 28, 2015
Filed:
Nov. 22, 2013
GM Global Technology Operations Llc, Detroit, MI (US);
Kevin P. Houle, Flint, MI (US);
Paul A. Adam, Milford, MI (US);
Kathryn E. Mulligan, West Bloomfield, MI (US);
GM Global Technology Operations LLC, Detroit, MI (US);
Abstract
A transmission assembly in a vehicle includes a transmission configured to receive a transmission fluid. A controller operatively connected to the transmission and configured to store a first look-up table defining respective warm-up calibration factors (F) for a respective first set of ambient temperatures. The controller has a processor and tangible, non-transitory memory on which is recorded instructions for executing a method for determining a current temperature (T) of the transmission fluid. The vehicle is keyed off and then keyed on after a key-off time duration (t), the controller being deactivated when the vehicle is keyed off and activated when the vehicle is keyed on. The controller is configured to determine the current temperature of the transmission fluid (T) based at least partially on the first look-up table and a key-on temperature (T) of the transmission fluid.