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. 06, 2018
Filed:
Dec. 15, 2015
Applicant:
Audi Ag, Ingolstadt, DE;
Inventors:
Assignee:
Audi AG, Ingolstadt, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F01N 3/00 (2006.01); F01N 3/08 (2006.01); F02D 41/02 (2006.01); F02D 41/14 (2006.01);
U.S. Cl.
CPC ...
F01N 3/0864 (2013.01); F02D 41/0235 (2013.01); F02D 41/1439 (2013.01); F02D 41/1454 (2013.01); F01N 2430/06 (2013.01); F01N 2560/025 (2013.01); F01N 2570/16 (2013.01); F01N 2900/1402 (2013.01); F01N 2900/1624 (2013.01); F02D 41/1445 (2013.01); F02D 41/1446 (2013.01); F02D 2200/0614 (2013.01); F02D 2200/0814 (2013.01); Y02T 10/20 (2013.01); Y02T 10/47 (2013.01);
Abstract
A method for operating a drive device having an internal combustion engine and an exhaust gas purification device for exhaust gas of the internal combustion engine includes performing an oxygen removal operation for removing oxygen from the exhaust gas purification device, wherein the oxygen removal operation includes at least one of operating the internal combustion engine sub-stoichiometrically and introducing additional fuel into the exhaust gas, wherein the oxygen removal operation is performed until a lambda value detected by a lambda probe arranged in the exhaust gas purification device reaches a defined lambda threshold value.