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. 05, 2021
Filed:
Feb. 24, 2020
Applicant:
Dr. Ing. H.c. F. Porsche Aktiengesellschaft, Stuttgart, DE;
Inventors:
Frank Schuerg, Gerlingen, DE;
Sebastian Hemminger, Oberriexingen, DE;
Primary Examiner:
Int. Cl.
CPC ...
F01N 11/00 (2006.01); F01N 13/00 (2010.01); F01N 3/20 (2006.01); F01N 3/30 (2006.01); F02D 41/02 (2006.01);
U.S. Cl.
CPC ...
F01N 11/007 (2013.01); F01N 3/2046 (2013.01); F01N 3/30 (2013.01); F01N 13/0093 (2014.06); F01N 13/011 (2014.06); F02D 41/025 (2013.01); F01N 2430/06 (2013.01); F01N 2560/025 (2013.01); F01N 2560/14 (2013.01); F01N 2900/1602 (2013.01);
Abstract
A method for operating an exhaust gas purification apparatus () of a vehicle includes monitoring close-coupled lambda value (Ln) of a close-coupled catalytic converter apparatus (), operating the close-coupled catalytic converter apparatus () with an excess of fuel, monitoring a non-close-coupled lambda value (Lf) of a non-close-coupled catalytic converter apparatus (), and operating the non-close-coupled catalytic converter apparatus () in a stoichiometric method of operation.