Patents by Inventor Eric DALAIS

Eric DALAIS 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).

  • Hydraulic clutch and method for determining an adaptive clutch fill volume of the hydraulic clutch
    Patent number: 8843289
    Abstract: At least a method is provided learning a characteristic filling volume of a hydraulic clutch. The method includes, but is not limited to applying a pressure pulse to the hydraulic clutch when the clutch is in a disengaged state and determining an inflection event at an input or at an output of a torque path in which the hydraulic clutch is situated. A characteristic filling volume of the hydraulic clutch is derived from the determined inflection event. Furthermore, a method is provided for learning a characteristic return spring pressure of the hydraulic clutch, for engaging the hydraulic clutch and corresponding devices for carrying out these methods.
    Type: Grant
    Filed: July 7, 2011
    Date of Patent: September 23, 2014
    Assignee: GM Global Technology Operations LLC
    Inventors: Morgan Postic, Marc Rambert, Eric Dalais, Emmanuel Hoff, Nathaniel Wilke
  • HYDRAULIC CLUTCH AND METHOD FOR DETERMINING AN ADAPTIVE CLUTCH FILL VOLUME OF THE HYDRAULIC CLUTCH
    Publication number: 20120067690
    Abstract: At least a method is provided learning a characteristic filling volume of a hydraulic clutch. The method includes, but is not limited to applying a pressure pulse to the hydraulic clutch when the clutch is in a disengaged state and determining an inflection event at an input or at an output of a torque path in which the hydraulic clutch is situated. A characteristic filling volume of the hydraulic clutch is derived from the determined inflection event. Furthermore, a method is provided for learning a characteristic return spring pressure of the hydraulic clutch, for engaging the hydraulic clutch and corresponding devices for carrying out these methods.
    Type: Application
    Filed: July 7, 2011
    Publication date: March 22, 2012
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Morgan POSTIC, Marc RAMBERT, Eric DALAIS, Emmanuel HOFF, Nathaniel WILKE