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. 31, 2012
Filed:
Nov. 26, 2008
Applicants:
Maruthi Devarakonda, Richland, WA (US);
Gordon Parker, Houghton, MI (US);
John Johnson, Houghton, MI (US);
Inventors:
Maruthi Devarakonda, Richland, WA (US);
Gordon Parker, Houghton, MI (US);
John Johnson, Houghton, MI (US);
Assignee:
Michigan Technological University, Houghton, MI (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F01N 3/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
An exhaust aftertreatment system comprising a selective reduction catalyst, a NOsensor or an NHsensor, a urea injector, and a dosing control unit, wherein the dosing control unit calculates the rate of urea injection by estimating the concentrations of NO and NOin the exhaust downstream of the SCR catalyst.