Patents by Inventor Lars Mikael Buur

Lars Mikael Buur 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).

  • Driveline stiffness relaxation systems and methods for DFCO operation
    Patent number: 8657721
    Abstract: A powertrain system includes an engine control module that generates a negative torque transition signal based on a pending negative torque event of an engine. A transmission control module receives the negative torque transition signal from the engine control module. The transmission control module increases a slip speed of a torque converter clutch in preparation for the pending negative torque event by adjusting pressure in the torque converter clutch prior to the pending negative torque event. The transmission control module decreases the slip speed in the torque converter clutch based on completion of a transition at least one of to the pending negative torque event and from the pending negative torque event.
    Type: Grant
    Filed: May 5, 2011
    Date of Patent: February 25, 2014
    Inventors: Christopher E. Whitney, Jeremy V. Horgan, Scott A. Hearld, Lars Mikael Buur, Ryan Goode, Krishnendu Kar
  • DRIVELINE STIFFNESS RELAXATION SYSTEMS AND METHODS FOR DFCO OPERATION
    Publication number: 20120234123
    Abstract: A powertrain system includes an engine control module that generates a negative torque transition signal based on a pending negative torque event of an engine. A transmission control module receives the negative torque transition signal from the engine control module. The transmission control module increases a slip speed of a torque converter clutch in preparation for the pending negative torque event by adjusting pressure in the torque converter clutch prior to the pending negative torque event. The transmission control module decreases the slip speed in the torque converter clutch based on completion of a transition at least one of to the pending negative torque event and from the pending negative torque event.
    Type: Application
    Filed: May 5, 2011
    Publication date: September 20, 2012
    Applicant: GM Global Technology Operations LLC
    Inventors: Christopher E. Whitney, Jeremy V. Horgan, Scott A. Hearld, Lars Mikael Buur, Ryan Goode, Krishnendu Kar