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:
Aug. 01, 2017
Filed:
Dec. 17, 2015
Applicant:
Audi Ag, Ingolstadt, DE;
Inventor:
Bodo Odendall, Lenting, DE;
Assignee:
AUDI AG, Ingolstadt, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F01N 11/00 (2006.01); F01N 3/021 (2006.01); F01N 9/00 (2006.01); F01N 3/023 (2006.01);
U.S. Cl.
CPC ...
F01N 11/00 (2013.01); F01N 3/021 (2013.01); F01N 9/002 (2013.01); F01N 11/002 (2013.01); F01N 3/023 (2013.01); F01N 9/005 (2013.01); F01N 2550/04 (2013.01); F01N 2550/24 (2013.01); F01N 2560/08 (2013.01); F01N 2560/14 (2013.01); F01N 2900/0404 (2013.01); F01N 2900/0418 (2013.01); F01N 2900/0422 (2013.01); F01N 2900/08 (2013.01); F01N 2900/1406 (2013.01); F01N 2900/1606 (2013.01); Y02T 10/47 (2013.01);
Abstract
In a method of operating an exhaust emission control device, the presence of an actual pressure loss of a particulate filter is determined, and a model pressure loss is determined as a function of a state variable. On the basis of the actual pressure loss and the model pressure loss a pressure quotient is determined and a condition of the particulate filter is ascertained in a diagnostic mode in response to the pressure quotient.