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. 16, 2013
Filed:
Jul. 02, 2012
Applicant:
Jason T. Miwa, San Antonio, TX (US);
Inventor:
Jason T. Miwa, San Antonio, TX (US);
Assignee:
Southwest Research Institute, San Antonio, TX (US);
Primary Examiner:
Int. Cl.
CPC ...
B01D 53/94 (2006.01); F01N 3/10 (2006.01); F01N 3/18 (2006.01);
U.S. Cl.
CPC ...
Abstract
Methods and systems for treating NOx-containing exhaust from an internal combustion engine. An exhaust aftertreatment system has at least a primary oxidation catalyst, a particulate filter, and a selective reduction catalyst (SCR). A bypass line diverts a portion of the exhaust from the exhaust line from a point downstream the particulate filter to a point upstream the SCR. A secondary oxidation catalyst on the bypass line is used to generate NO or NO2 to be returned to the exhaust line upstream the SCR.