The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 20, 2010
Filed:
Feb. 02, 2007
Procedure for diagnosis of an emission treatment method and procedures to carry out same said method
Volker Reusing, Stuttgart, DE;
Stefan Stein, Stuttgart, DE;
Ralf Scholl, Stuttgart, DE;
Guenter Keusen, Stuttgart, DE;
Carsten Bork, Tamm, DE;
Volker Reusing, Stuttgart, DE;
Stefan Stein, Stuttgart, DE;
Ralf Scholl, Stuttgart, DE;
Guenter Keusen, Stuttgart, DE;
Carsten Bork, Tamm, DE;
Robert Bosch GmbH, Stuttgart, DE;
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.