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:
Jul. 13, 2021
Filed:
Jul. 29, 2019
Applicant:
GM Global Technology Operations Llc, Detroit, MI (US);
Inventors:
Nicholas Girardi, Milford, MI (US);
Sarah Funk, Canton, MI (US);
David P. Quigley, Brighton, MI (US);
Assignee:
GM GLOBAL TECHNOLOGY OPERATIONS LLC, Detroit, MI (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F01N 3/00 (2006.01); F01N 3/08 (2006.01); F01N 3/20 (2006.01);
U.S. Cl.
CPC ...
F01N 3/0871 (2013.01); F01N 3/208 (2013.01); F01N 3/0842 (2013.01); F01N 2610/02 (2013.01); F01N 2610/146 (2013.01); F01N 2610/1406 (2013.01); F01N 2610/148 (2013.01);
Abstract
A diesel exhaust fluid (DEF) control system includes: a target module configured to determine a target rate of injection of a DEF by a DEF injector; an adjustment module configured to determine an adjustment based on a concentration of urea in the DEF; an adjusting module configured to adjust the target rate based on the adjustment to produce an adjusted rate of injection of the DEF by the DEF injector; and an injector control module configured to control injection of the DEF by the DEF injector based on the adjusted rate.