Patents by Inventor Ralf Scholl

Ralf Scholl 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).

  • Procedure for diagnosis of an emission treatment method and procedures to carry out same said method
    Patent number: 7698934
    Abstract: A procedure specifically for the execution of a diagnosis of an emission treatment system is being introduced. The pressure of the reagent between the first and second valve and/or between the second valve and the injector valve is measured and the pressure measuring signal are the basis of the diagnosis. The first and second valve, are opened in an alternating cycle, where the opening time, and/or the period duration of the first and second valves are set in such a way that the emerging diagnostic flow volume is smaller than the measuring flow volume. The procedures pursuant to the invention thereby reduce the influence of dynamic precursors of the reagent flow in the reagent line and enables, aside from an increase in reliability of the diagnosis results, a diagnosis possibility of small leakages.
    Type: Grant
    Filed: February 2, 2007
    Date of Patent: April 20, 2010
    Assignee: Robert Bosch GmbH
    Inventors: Volker Reusing, Stefan Stein, Ralf Scholl, Guenter Keusen, Carsten Bork
  • Procedure for diagnosis of an emission treatment method and procedures to carry out same said method
    Publication number: 20080319686
    Abstract: A procedure specifically for the execution of a diagnosis of an emission treatment system is being introduced. The pressure of the reagent between the first and second valve and/or between the second valve and the injector valve is measured and the pressure measuring signal are the basis of the diagnosis. The first and second valve, are opened in an alternating cycle, where the opening time, and/or the period duration of the first and second valves are set in such a way that the emerging diagnostic flow volume is smaller than the measuring flow volume. The procedures pursuant to the invention thereby reduce the influence of dynamic precursors of the reagent flow in the reagent line and enables, aside from an increase in reliability of the diagnosis results, a diagnosis possibility of small leakages.
    Type: Application
    Filed: February 2, 2007
    Publication date: December 25, 2008
    Applicant: Robert Bosch GMBH
    Inventors: Volker Reusing, Stefan Stein, Ralf Scholl, Guenter Keusen, Carsten Bork