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:
Mar. 21, 2017
Filed:
Dec. 04, 2014
Applicant:
GM Global Technology Operations Llc, Detroit, MI (US);
Inventors:
Gongshin Qi, Troy, MI (US);
Steven J. Schmieg, Troy, MI (US);
Shouxian Ren, Ypsilanti, MI (US);
Wei Li, Troy, MI (US);
Assignee:
GM GLOBAL TECHNOLOGY OPERATIONS LLC, Detroit, MI (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D 50/00 (2006.01); B01D 53/94 (2006.01); B01J 29/12 (2006.01); F01N 3/08 (2006.01); F01N 3/021 (2006.01); F01N 13/00 (2010.01);
U.S. Cl.
CPC ...
B01D 53/9431 (2013.01); B01J 29/126 (2013.01); F01N 3/021 (2013.01); F01N 3/0814 (2013.01); F01N 3/0842 (2013.01); B01D 2255/102 (2013.01); B01D 2255/104 (2013.01); B01D 2255/2092 (2013.01); B01D 2255/50 (2013.01); B01D 2255/9032 (2013.01); F01N 13/009 (2014.06); F01N 2510/063 (2013.01);
Abstract
An aftertreatment system utilizes chemical reactions to treat an exhaust gas flow. A device for use within an aftertreatment system includes a silver-based NOx storage catalyst and a zeolite. The silver-based NOx storage catalyst and the zeolite store NOx through a low temperature startup period of operation. In one embodiment, the zeolite includes a barium Y zeolite.