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. 23, 2021
Filed:
Mar. 12, 2019
Applicant:
Ford Global Technologies, Llc, Dearborn, MI (US);
Inventors:
Christine Lambert, Dearborn, MI (US);
Douglas Allen Dobson, Ypsilanti, MI (US);
Joseph Robert Theis, Rockwood, MI (US);
Assignee:
Ford Global Technologies, LLC, Dearborn, MI (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
F01N 3/00 (2006.01); F01N 3/08 (2006.01); F01N 3/36 (2006.01); F01N 3/20 (2006.01); F01N 9/00 (2006.01); F01N 11/00 (2006.01); F01N 13/00 (2010.01);
U.S. Cl.
CPC ...
F01N 3/0885 (2013.01); F01N 3/0814 (2013.01); F01N 3/0821 (2013.01); F01N 3/0842 (2013.01); F01N 3/2026 (2013.01); F01N 3/2066 (2013.01); F01N 3/36 (2013.01); F01N 9/002 (2013.01); F01N 11/002 (2013.01); F01N 13/009 (2014.06); F01N 2250/02 (2013.01); F01N 2250/12 (2013.01); F01N 2250/14 (2013.01); F01N 2260/04 (2013.01); F01N 2550/03 (2013.01); F01N 2550/04 (2013.01); F01N 2560/06 (2013.01); F01N 2570/14 (2013.01); F01N 2610/03 (2013.01); F01N 2900/1404 (2013.01); F01N 2900/1606 (2013.01); F01N 2900/1622 (2013.01);
Abstract
Methods and systems are provided for a low temperature NOx adsorber (LTNA). In one example, a method includes initiating a desulfation of an LTNA responsive to an estimated sulfur exposure exceeding a threshold, the desulfation including heating the LTNA to a first threshold temperature while maintaining an exhaust oxygen level above a threshold level throughout the entire desulfation.