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:
Mar. 19, 2019
Filed:
Nov. 08, 2016
Applicant:
Robert Bosch Gmbh, Stuttgart, DE;
Inventors:
Assignee:
Robert Bosch GmbH, Stuttgart, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F01N 11/00 (2006.01); F01N 3/20 (2006.01);
U.S. Cl.
CPC ...
F01N 11/00 (2013.01); F01N 3/208 (2013.01); F01N 2900/0408 (2013.01); F01N 2900/0411 (2013.01); F01N 2900/16 (2013.01);
Abstract
In a method for diagnosing an SCR catalyst system of an internal combustion engine, the SCR catalyst system comprises at least one first SCR catalyst device () and at least one second SCR catalyst device (). A first injection position upstream of the first SCR catalyst device () in the form of a first metering device () is provided for injecting liquid reducing agent for the SCR catalyst devices (). A second injection position between the two SCR catalyst devices () in the form of a second metering device () is furthermore provided. Both SCR catalyst devices () are monitored in a differentiated way by means of active and passive diagnostic methods.