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:
Sep. 10, 2024
Filed:
Nov. 15, 2022
Applicant:
GM Global Technology Operations Llc, Detroit, MI (US);
Inventors:
Erika L. Pruski, Brighton, MI (US);
Janean E. Potter, Northville, MI (US);
Rafat F. Hattar, Royal Oak, MI (US);
Assignee:
GM Global Technology Operations LLC, Detroit, MI (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F01N 11/00 (2006.01); F02D 41/14 (2006.01); G01N 33/00 (2006.01);
U.S. Cl.
CPC ...
F02D 41/1463 (2013.01); F01N 11/002 (2013.01); G01N 33/0063 (2013.01); G01N 33/007 (2013.01); F01N 2560/026 (2013.01); F01N 2900/1402 (2013.01); G01N 33/0037 (2013.01);
Abstract
The concepts described herein relate to a system, method, and/or apparatus for monitoring a NOx sensor that is arranged in an exhaust gas feedstream of an internal combustion engine downstream of an exhaust aftertreatment system to detect a fault related to the NOx sensor. This includes utilizing a catalyst efficiency model to detect occurrence of a fault that may indicate an in-range biased or stuck NOx sensor.