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. 03, 2015
Filed:
Oct. 21, 2008
Jong H. Lee, Rochester Hills, MI (US);
David B. Brown, Brighton, MI (US);
Michael J. Paratore, Jr., Howell, MI (US);
Yongsheng He, Sterling Heights, MI (US);
Jong H. Lee, Rochester Hills, MI (US);
David B. Brown, Brighton, MI (US);
Michael J. Paratore, Jr., Howell, MI (US);
Yongsheng He, Sterling Heights, MI (US);
GM Global Technology Operations LLC, Detroit, MI (US);
Abstract
An exemplary method and associated architecture for reducing NOand particulate matter emissions in an exhaust stream may include passing the exhaust stream through a catalytic oxidation reactor; passing the exhaust stream through a two-way selective reduction catalyst particulate filter located downstream of the catalytic oxidation reactor, wherein the two-way selective reduction catalyst particulate filter may include a wall flow filter substrate having internal walls coated with a first selective catalytic reduction catalyst; and passing the exhaust stream through a catalytic reduction reactor located downstream of the two-way selective reduction catalyst particulate filter, wherein the catalytic reduction reactor may include a second selective catalytic reduction catalyst.