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. 05, 2016
Filed:
Aug. 09, 2013
Applicant:
Ford Global Technologies, Llc, Dearborn, MI (US);
Inventors:
Bret Alan Zimmerman, Grosse Pointe Farms, MI (US);
John Paul Bogema, Flat Rock, MI (US);
Timothy L. Jenkins, Detroit, MI (US);
Michiel J. Van Nieuwstadt, Ann Arbor, MI (US);
Assignee:
Ford Global Technologies, LLC, Dearborn, MI (US);
Primary Examiner:
Int. Cl.
CPC ...
G01M 15/10 (2006.01); F01N 3/20 (2006.01); F01N 11/00 (2006.01); F02D 41/22 (2006.01); F02D 41/04 (2006.01); F02D 41/14 (2006.01);
U.S. Cl.
CPC ...
G01M 15/102 (2013.01); F01N 3/208 (2013.01); F01N 11/00 (2013.01); F02D 41/222 (2013.01); F01N 2550/05 (2013.01); F01N 2610/1493 (2013.01); F01N 2900/08 (2013.01); F01N 2900/1818 (2013.01); F02D 41/042 (2013.01); F02D 2041/1468 (2013.01); Y02T 10/24 (2013.01); Y02T 10/40 (2013.01); Y02T 10/47 (2013.01);
Abstract
Various methods are provided for diagnosing an exhaust fluid sensor disposed in an exhaust fluid passage. By monitoring the sensor during conditions when it is in contact with the exhaust fluid and when it is not in contact with the exhaust fluid, an expected change in the sensor output can be monitored to identify whether the sensor is generating sufficiently accurate readings.