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:
Aug. 13, 2013
Filed:
Nov. 30, 2011
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);
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);
Ford Global Technologies, LLC, Dearborn, MI (US);
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.