Patents by Inventor Friedemann Heller

Friedemann Heller 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 diagnosing a tank ventilation system
    Patent number: 9470186
    Abstract: In an internal combustion engine having a turbocharger and a compressor, a discharge point of a tank ventilation system is provided in the intake passage of the internal combustion engine upstream from the turbocharger or the compressor. A Venturi nozzle is situated between the discharge point and a tank venting valve of the tank ventilation system. A defect or a detachment of the line between the Venturi nozzle and the discharge point is detectable with the aid of a change of an adaption value and/or of a correction factor in a control unit of the internal combustion engine or in a computer.
    Type: Grant
    Filed: August 6, 2012
    Date of Patent: October 18, 2016
    Assignee: ROBERT BOSCH GMBH
    Inventors: Friedemann Heller, Michael Senger, Philip Heuser
  • METHOD FOR DIAGNOSING A TANK VENTILATION SYSTEM
    Publication number: 20140299110
    Abstract: In an internal combustion engine having a turbocharger and a compressor, a discharge point of a tank ventilation system is provided in the intake passage of the internal combustion engine upstream from the turbocharger or the compressor. A Venturi nozzle is situated between the discharge point and a tank venting valve of the tank ventilation system. A defect or a detachment of the line between the Venturi nozzle and the discharge point is detectable with the aid of a change of an adaption value and/or of a correction factor in a control unit of the internal combustion engine or in a computer.
    Type: Application
    Filed: August 6, 2012
    Publication date: October 9, 2014
    Inventors: Friedemann Heller, Michael Senger, Philip Heuser