Patents by Inventor Staffan Lyberg

Staffan Lyberg 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).

  • Accumulator working volume management and adaptation
    Patent number: 8504263
    Abstract: A dual clutch transmission (DCT) control module includes a pressure determination module that determines a measured pre-charge pressure of an accumulator. A motor control module determines an actual pre-charge pressure based on the measured pre-charge pressure, stored previous pre-charge pressures, and ambient temperature, and controls a pump motor based on the actual pre-charge pressure.
    Type: Grant
    Filed: August 4, 2010
    Date of Patent: August 6, 2013
    Inventors: Hongyu Wang, Staffan Lyberg, Tobias Berndtson
  • ACCUMULATOR WORKING VOLUME MANAGEMENT AND ADAPTATION
    Publication number: 20110264339
    Abstract: A dual clutch transmission (DCT) control module includes a pressure determination module that determines a measured pre-charge pressure of an accumulator. A motor control module determines an actual pre-charge pressure based on the measured pre-charge pressure, stored previous pre-charge pressures, and ambient temperature, and controls a pump motor based on the actual pre-charge pressure.
    Type: Application
    Filed: August 4, 2010
    Publication date: October 27, 2011
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS, INC.
    Inventors: Hongyu Wang, Staffan Lyberg, Tobias Berndtson