Patents by Inventor Robert Lepper

Robert Lepper 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 controlling a pressure in a crankcase
    Patent number: 10544718
    Abstract: A method for controlling a pressure in a crankcase of an internal combustion engine with a crankcase venting device. The crankcase venting device may include a suction line via which a blow-by gas is removable from the crankcase, a pumping device, and an oil mist separating device. The pumping device and the oil mist separating device may be arranged in the suction line. The method may include controlling a rotational speed of an electric drive in at least one of a closed-loop manner and an open-loop manner, the electric drive configured to drive the pumping device. The method may also include adjusting the pressure in the crankcase via manipulating the rotational speed of the electric drive. The method may further include inferring the pressure in the crankcase via evaluating at least one performance parameter of the electric drive.
    Type: Grant
    Filed: March 15, 2017
    Date of Patent: January 28, 2020
    Assignee: Mahle International GmbH
    Inventors: Volker Kirschner, Robert Lepper, Thomas Riemay
  • METHOD FOR CONTROLLING A PRESSURE IN A CRANKCASE
    Publication number: 20190211721
    Abstract: A method for controlling a pressure in a crankcase of an internal combustion engine with a crankcase venting device. The crankcase venting device may include a suction line via which a blow-by gas is removable from the crankcase, a pumping device, and an oil mist separating device. The pumping device and the oil mist separating device may be arranged in the suction line. The method may include controlling a rotational speed of an electric drive in at least one of a closed-loop manner and an open-loop manner, the electric drive configured to drive the pumping device. The method may also include adjusting the pressure in the crankcase via manipulating the rotational speed of the electric drive. The method may further include inferring the pressure in the crankcase via evaluating at least one performance parameter of the electric drive.
    Type: Application
    Filed: March 15, 2017
    Publication date: July 11, 2019
    Inventors: Volker Kirschner, Robert Lepper, Thomas Riemay