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. 19, 2017
Filed:
Oct. 28, 2014
Applicant:
Ford Global Technologies, Llc, Dearborn, MI (US);
Inventors:
Nicholas Girardi, Milford, MI (US);
Scott Donald Cooper, Ann Arbor, MI (US);
Cory Scott Hendrickson, Ann Arbor, MI (US);
Michiel J. Van Nieuwstadt, Ann Arbor, MI (US);
Assignee:
Ford Global Technologies, LLC, Dearborn, MI (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F01N 3/20 (2006.01); F01N 9/00 (2006.01);
U.S. Cl.
CPC ...
F01N 3/208 (2013.01); F01N 9/00 (2013.01); F01N 2610/02 (2013.01); F01N 2900/10 (2013.01); F01N 2900/1818 (2013.01); Y02T 10/24 (2013.01); Y02T 10/47 (2013.01);
Abstract
A method for an exhaust system is provided, comprising adjusting reductant injection responsive to a reductant concentration, the reductant concentration based on concentration sensor readings and vehicle motion. If the reductant freezes, the reductant may stratify, leading to inaccurate concentration sensor readings. Vehicle motion may mix the reductant, thereby ensuring an accurate concentration measurement which may then be used to adjust reductant injection.