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:
May. 24, 2022
Filed:
Sep. 15, 2020
Applicant:
Ford Global Technologies, Llc, Dearborn, MI (US);
Inventors:
David Townson, London, GB;
Jim Bromham, Wiltshire, GB;
Assignee:
Ford Global Technologies, LLC, Dearborn, MI (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F01N 11/00 (2006.01); F01N 3/035 (2006.01); F01N 3/20 (2006.01); F02D 41/00 (2006.01); B01D 46/00 (2022.01); B01D 53/94 (2006.01);
U.S. Cl.
CPC ...
F01N 11/007 (2013.01); B01D 46/0027 (2013.01); B01D 53/9431 (2013.01); B01D 53/9495 (2013.01); F01N 3/035 (2013.01); F01N 3/208 (2013.01); F02D 41/0065 (2013.01); F01N 2550/04 (2013.01); F01N 2610/02 (2013.01); F01N 2610/146 (2013.01); F01N 2900/08 (2013.01); F01N 2900/1402 (2013.01); F01N 2900/1606 (2013.01);
Abstract
Systems and methods are described for performing a diagnostic on an exhaust gas aftertreatment system. A gas entry parameter into a portion of an exhaust system of an engine is determined. In response to determining that the gas entry parameter is less than the predetermined threshold, a level of NH3 in the exhaust gas is determined. In response to determining that the level of NH3 is above a threshold value, degradation of a particulate filter of the exhaust gas aftertreatment system is indicated.