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:
Dec. 22, 2015
Filed:
Nov. 13, 2013
Applicant:
Ford Global Technologies, Llc, Dearborn, MI (US);
Inventors:
Devesh Upadhyay, Canton, MI (US);
In Kwang Yoo, An Arbor, MI (US);
David John Kubinski, Canton, MI (US);
Jacobus Hendrik Visser, Farmington Hills, MI (US);
Garth Michael Meyer, Dearborn, MI (US);
Michiel J. Van Nieuwstadt, Ann Arbor, MI (US);
Assignee:
Ford Global Technologies, LLC, Dearborn, MI (US);
Primary Examiner:
Int. Cl.
CPC ...
F01N 3/00 (2006.01); F01N 3/20 (2006.01); F01N 11/00 (2006.01);
U.S. Cl.
CPC ...
F01N 3/2066 (2013.01); F01N 3/208 (2013.01); F01N 11/00 (2013.01); F01N 2550/05 (2013.01); F01N 2560/026 (2013.01); F01N 2900/1402 (2013.01);
Abstract
Various systems and methods for detecting exhaust reductant injector degradation based on an exhaust NOsensor are disclosed. In one example, degradation of the reductant injector is indicated when an actual NOsensor output differs from an expected NOsensor output by more than a threshold amount under engine off conditions.