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:
Jun. 23, 2020
Filed:
Nov. 09, 2017
Applicant:
GM Global Technology Operations Llc, Detroit, MI (US);
Inventors:
Hari C Perla, Novi, MI (US);
Joseph W Tatangelo, Wolverine Lake, MI (US);
Paul G Otanez, Franklin, MI (US);
Alexander J Severt, Ann Arbor, MI (US);
Virinchi Mallela, Novi, MI (US);
Assignee:
GM GLOBAL TECHNOLOGY OPERATIONS LLC, Detroit, MI (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16H 61/02 (2006.01); F16H 61/662 (2006.01); F16H 61/12 (2010.01); F16H 59/14 (2006.01); F16H 59/70 (2006.01);
U.S. Cl.
CPC ...
F16H 61/6625 (2013.01); F16H 61/0213 (2013.01); F16H 61/12 (2013.01); F16H 61/662 (2013.01); F16H 59/14 (2013.01); F16H 59/70 (2013.01); F16H 2059/147 (2013.01); F16H 2059/704 (2013.01);
Abstract
A control system and method for controlling a continuously variable transmission in a vehicle propulsion system includes measuring a speed ratio of the continuously variable transmission, determining whether the measured speed ratio is drifting away from a commanded speed ratio, and adjusting the commanded speed ratio to a value that is different than a desired speed ratio if the measured speed ratio is drifting away from the commanded speed ratio.