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:
Jan. 10, 2017
Filed:
Dec. 16, 2014
Applicant:
Ford Global Technologies, Llc, Dearborn, MI (US);
Inventors:
Michael James Uhrich, West Bloomfield, MI (US);
Adam Nathan Banker, Canton, MI (US);
James Michael Kerns, Trenton, MI (US);
Imad Hassan Makki, Dearborn Heights, MI (US);
Assignee:
Ford Global Technologies, LLC, Dearborn, MI (US);
Primary Examiner:
Int. Cl.
CPC ...
F02D 41/22 (2006.01); G01M 15/10 (2006.01); F01N 11/00 (2006.01); F02D 41/12 (2006.01); F02D 41/14 (2006.01); F02D 41/30 (2006.01);
U.S. Cl.
CPC ...
G01M 15/104 (2013.01); F01N 11/007 (2013.01); F02D 41/123 (2013.01); F02D 41/1481 (2013.01); F02D 41/3017 (2013.01); F01N 2550/20 (2013.01); F01N 2560/025 (2013.01); Y02T 10/47 (2013.01);
Abstract
A method for monitoring an exhaust gas sensor coupled in an engine exhaust is provided. In one embodiment, the method comprises indicating exhaust gas sensor degradation based on a time delay and line length of each sample of a set of exhaust gas sensor responses collected during a commanded change in air-fuel ratio. In this way, the exhaust gas sensor may be monitored utilizing robust parameters in a non-intrusive manner.