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:
Apr. 23, 2013
Filed:
Dec. 31, 2009
Scott M. Hoyte, Fountain Inn, SC (US);
Vivek V. Badami, Schenectady, NY (US);
Chayan Mitra, Karnataka, IN;
Ayan Banerjee, Kalyani, IN;
Scott M. Hoyte, Fountain Inn, SC (US);
Vivek V. Badami, Schenectady, NY (US);
Chayan Mitra, Karnataka, IN;
Ayan Banerjee, Kalyani, IN;
General Electric Company, Schenectady, NY (US);
Abstract
A system for the monitoring and/or controlling emission levels of nitrogen oxide and a reductant from a stream of combustion exhaust, wherein the internal combustion engine includes a SCR unit disposed in the stream of combustion exhaust between an upstream conduit and a downstream conduit, the SCR unit having a catalyst that is configured to catalytically reduce nitrogen oxides contained in the combustion exhaust to elemental nitrogen in the presence of a reductant and oxygen, and wherein the internal combustion engine further includes a reductant injector; the system comprising: a laser absorption spectroscopy unit that is disposed in the downstream conduit and configured to measure the concentration level of at least nitrogen oxide and the reductant in the exhaust; and a control unit.