Patents Assigned to General Motors Global Technology Operations LLC
  • Electrically variable transmission
    Patent number: 8585520
    Abstract: A hybrid transmission having an input member, an output member, and a single motor/generator is characterized by a plurality of fixed-ratio modes of operation and at least one electrically variable mode of operation. In the fixed-ratio modes of operation, the speed ratio between the input member and the output member is independent of the speed of the motor/generator. In the electrically variable mode of operation, the speed ratio between the input member and the output member is dependent upon the speed of the motor/generator.
    Type: Grant
    Filed: November 12, 2010
    Date of Patent: November 19, 2013
    Assignee: General Motors Global Technology Operations LLC
    Inventors: Paul F. Turnbull, Brendan M. Conlon, Alan G. Holmes, Shawn H. Swales