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:
Dec. 09, 2014
Filed:
Jun. 30, 2011
Steven P. Moorman, Dexter, MI (US);
Philip C. Lundberg, Keego Harbor, MI (US);
John R. Czoykowski, Grosse Pointe Park, MI (US);
Bret M. Olson, Whitelake, MI (US);
Chinar S. Ghike, Livonia, MI (US);
James D. Hendrickson, Oxford, MI (US);
Christopher Jay Weingartz, Holly, MI (US);
Steven P. Moorman, Dexter, MI (US);
Philip C. Lundberg, Keego Harbor, MI (US);
John R. Czoykowski, Grosse Pointe Park, MI (US);
Bret M. Olson, Whitelake, MI (US);
Chinar S. Ghike, Livonia, MI (US);
James D. Hendrickson, Oxford, MI (US);
Christopher Jay Weingartz, Holly, MI (US);
GM Global Technology Operations, LLC, Detroit, MI (US);
Abstract
A method of controlling a hydraulic control system for a dual clutch transmission includes controlling a plurality of pressure and flow control devices in fluid communication with a plurality of clutch actuators and with a plurality of synchronizer actuators. The clutch actuators are operable to actuate a plurality of torque transmitting devices and the synchronizer actuators are operable to actuate a plurality of synchronizer assemblies. Selective activation of combinations of the pressure control solenoids and the flow control solenoids allows for a pressurized fluid to activate at least one of the clutch actuators and synchronizer actuators in order to shift the transmission into a desired gear ratio.