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:
Feb. 26, 2013
Filed:
Apr. 27, 2009
Norman D. Brinkman, Troy, MI (US);
Paul M. Najt, Bloomfield Hills, MI (US);
Kushal Narayanaswamy, Sterling Heights, MI (US);
David B. Brown, Brighton, MI (US);
Wei LI, Troy, MI (US);
Kevin L. Perry, Fraser, MI (US);
Gongshin Qi, Troy, MI (US);
Orgun A. Guralp, Ann Arbor, MI (US);
Norman D. Brinkman, Troy, MI (US);
Paul M. Najt, Bloomfield Hills, MI (US);
Kushal Narayanaswamy, Sterling Heights, MI (US);
David B. Brown, Brighton, MI (US);
Wei Li, Troy, MI (US);
Kevin L. Perry, Fraser, MI (US);
Gongshin Qi, Troy, MI (US);
Orgun A. Guralp, Ann Arbor, MI (US);
GM Global Technology Operations LLC, Detroit, MI (US);
Abstract
Engine exhaust gas feedstream NOx emissions aftertreatment includes a catalytic device connected upstream of an ammonia-selective catalytic reduction device including a base metal. Engine operation can be modulated to generate an engine-out exhaust gas feedstream that converts to ammonia on the catalytic device. The ammonia is stored on the ammonia-selective catalytic reduction device, and used to reduce NOx emissions in the exhaust gas feedstream.