Patents by Inventor Jeffrey M. DeSimone

Jeffrey M. DeSimone 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).

  • Ratio selection method for a continuously variable transmission during deceleration by braking
    Patent number: 10774930
    Abstract: A method and system for selecting a speed ratio for a continuously variable transmission (CVT) of a vehicle during braking. The method and system includes determining a Current Actual Speed Ratio of the CVT when the distance of a brake pedal travel exceeds a predetermined distance, determining, by a transmission control module (TCM), an amount of Available Speed Ratio Change (?r), a Current Ratio Change Capability (Current-{dot over (r)}), and a Predictive Ratio Change Capability (Predictive-{dot over (r)}). The method further includes the TCM calculating a Time to Reach the Minimum Under-drive Ratio (tUD), calculating a Predicted Velocity of the Vehicle (vPr) using (tUD), determining a Desired Speed Ratio of the CVT using the Predicted Velocity of the Vehicle (vPr), and actuating the CVT to the Desired Speed Ratio.
    Type: Grant
    Filed: May 21, 2019
    Date of Patent: September 15, 2020
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Xuefeng T. Tao, Steven P. Moorman, Ronald W. Van Diepen, Jeffrey M. DeSimone, Madhura N. Paranjape