Patents by Inventor Hari C Perla

Hari C Perla has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Method and system for controlling a continuously variable transmission for a vehicle propulsion system
    Patent number: 10690245
    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.
    Type: Grant
    Filed: November 9, 2017
    Date of Patent: June 23, 2020
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Hari C Perla, Joseph W Tatangelo, Paul G Otanez, Alexander J Severt, Virinchi Mallela
  • METHOD AND SYSTEM FOR CONTROLLING A CONTINUOUSLY VARIABLE TRANSMISSION FOR A VEHICLE PROPULSION SYSTEM
    Publication number: 20190136971
    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.
    Type: Application
    Filed: November 9, 2017
    Publication date: May 9, 2019
    Inventors: Hari C Perla, Joseph W Tatangelo, Paul G Otanez, Alexander J Severt, Virinchi Mallela