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:
Oct. 22, 2019
Filed:
Jul. 27, 2017
Applicant:
Audi Ag, Ingolstadt, DE;
Inventor:
Bodo Odendall, Lenting, DE;
Assignee:
AUDI AG, Ingolstadt, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F02D 41/22 (2006.01); F01N 3/10 (2006.01); F01N 11/00 (2006.01);
U.S. Cl.
CPC ...
F02D 41/222 (2013.01); F01N 3/101 (2013.01); F01N 11/007 (2013.01); F01N 2560/025 (2013.01);
Abstract
The present invention relates to a method for diagnosing an exhaust gas system of an internal combustion engine with at least one three-way catalytic converter, at least one four-way catalytic converter and at least one binary lambda sensor, wherein during the testing of the functional operability of the at least one binary lambda sensor and/or of at least one four-way catalytic converter on the basis of a lambda change with a changeover of the internal combustion engine from a lean operation to a rich operation following a thrust operation clearing out at least one three-way catalytic converter occurs.