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);
Nathaniel E. Wilke, Waterford, MI (US);
GM Global Technology Operations LLC, Detroit, MI (US);
Abstract
A vehicle includes a transmission having a plurality of clutches, including an oncoming binary clutch and an off-going clutch. The oncoming binary clutch is a binary device and the off-going clutch is a non-binary device. An internal combustion engine is operatively connected to the transmission and configured to generate an engine torque based on an input torque request. A controller is operatively connected to the transmission and has a processor and tangible, non-transitory memory on which is recorded instructions for executing a method for controlling a power-on downshift with the off-going clutch and the oncoming binary clutch. The controller is configured to generate a first pressure command at below a threshold pressure to at least partially pressurize the oncoming binary clutch and initiate a clutch slip for the off-going clutch. Among other steps, the controller is configured to determine if synchronization is met.