Patents by Inventor Felix Klünder

Felix Klünder 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 and control unit to control a drivetrain
    Patent number: 10053085
    Abstract: A method for operating a drive train of a motor vehicle includes closing a frictional-locking shift element that serves as a starting element of a transmission in a slipping manner such that slip at the frictional-locking shift element is reduced by a defined pressure control of the frictional-locking shift element, determining a differential rotational speed at the frictional-locking shift element or a variable dependent on the differential rotational speed while the frictional-locking shift element is closing, and, when the differential rotational speed or the variable dependent on the differential rotational speed is less than a first limit value or reaches the first limit value, changing a rotational speed of the drive unit in such a manner that the differential rotational speed or the variable dependent on the differential rotational speed becomes less than a second limit value or reaches the second limit value within a defined time period.
    Type: Grant
    Filed: December 21, 2016
    Date of Patent: August 21, 2018
    Assignee: ZF FRIEDRICHSHAFEN AG
    Inventors: Joost Peeters, Felix Klünder, Anton Fritzer, Florian Mayer
  • Method and Control Unit to Control a Drivetrain
    Publication number: 20170174208
    Abstract: A method for operating a drive train of a motor vehicle includes closing a frictional-locking shift element that serves as a starting element of a transmission in a slipping manner such that slip at the frictional-locking shift element is reduced by a defined pressure control of the frictional-locking shift element, determining a differential rotational speed at the frictional-locking shift element or a variable dependent on the differential rotational speed while the frictional-locking shift element is closing, and, when the differential rotational speed or the variable dependent on the differential rotational speed is less than a first limit value or reaches the first limit value, changing a rotational speed of the drive unit in such a manner that the differential rotational speed or the variable dependent on the differential rotational speed becomes less than a second limit value or reaches the second limit value within a defined time period.
    Type: Application
    Filed: December 21, 2016
    Publication date: June 22, 2017
    Inventors: Joost Peeters, Felix Klünder, Anton Fritzer, Florian Mayer