Patents by Inventor CHRISTOPHER A. LAURENT

CHRISTOPHER A. LAURENT 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 PROVIDING A CONTROLLED NEUTRAL IN LIEU OF A CONVENTIONAL NEUTRAL IN AN ELECTRO-MECHANICAL TRANSMISSION
    Publication number: 20140141915
    Abstract: A powertrain system includes an internal combustion engine, a first electric machine and an electro-mechanical transmission operative to transmit torque to a driveline. A method for controlling the powertrain system in the presence of a controlled neutral operation of the electro-mechanical transmission being selected includes monitoring vehicle speed, and only when the monitored vehicle speed is indicative of a low-speed zone restricting a transition from a current engine operating state.
    Type: Application
    Filed: November 16, 2012
    Publication date: May 22, 2014
    Applicant: GM Global Technology Operations LLC
    Inventors: SYED NAQI, LAWRENCE A. KAMINSKY, JY-JEN F. SAH, SHAUN C. BOWMAN, CHRISTOPHER A. LAURENT, GEORGE ROBISON, SILVA HITI, JONATHAN M. BOLENBAUGH, ALI K. NAQVI