Patents by Inventor Cristina T. Ledezma

Cristina T. Ledezma 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 for estimating the power capability of the primary power source of a hybrid vehicle
    Patent number: 7213448
    Abstract: The present invention provides a method for estimating the power capability of the primary power source of a hybrid vehicle. The method preferably includes calculating a first indicator based on a broadcast estimate from the primary power source of a hybrid vehicle. A second indicator is obtained by calculating the difference between the value of a torque command and the amount of torque reportedly delivered in response to the torque command. A third indicator is calculated based on a plurality of system dynamic equations. The first, second and third indicators are then combined to obtain an estimate of the power capability of the primary power source.
    Type: Grant
    Filed: April 6, 2006
    Date of Patent: May 8, 2007
    Assignee: General Motors Corporation
    Inventors: Steven C. Huseman, Cristina T. Ledezma