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:
Jul. 05, 2016
Filed:
May. 31, 2013
Applicant:
GM Global Technology Operations Llc, Detroit, MI (US);
Inventors:
Philip C. Lundberg, Keego Harbor, MI (US);
Zhe Xie, Rochester, MI (US);
Assignee:
GM Global Technology Operations, LLC, Detroit, MI (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16D 31/02 (2006.01); F16H 61/00 (2006.01); F16H 57/04 (2010.01); F16H 61/664 (2006.01);
U.S. Cl.
CPC ...
F16H 61/0021 (2013.01); F16H 57/0435 (2013.01); F16H 61/6648 (2013.01); F16H 61/6649 (2013.01); F16H 2061/0037 (2013.01); Y10T 74/20024 (2015.01); Y10T 137/85978 (2015.04);
Abstract
A hydraulic control system for a continuously variable transmission includes a pressure regulator subsystem, a ratio control subsystem, a torque converter control (TCC) subsystem, a variable lubrication control subsystem, a variator clamping subsystem, and a clutch control subsystem. The variable lubrication control subsystem allows for increased and decreased oil flow to components of the variable transmission based on demand. The pressure regulator subsystem provides binary line pressure control to the lubrication subsystem.