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:
Jul. 27, 2021
Filed:
Jan. 31, 2019
Applicants:
Hyundai Motor Company, Seoul, KR;
Kia Motors Corporation, Seoul, KR;
Inventors:
Assignees:
HYUNDAI MOTOR COMPANY, Seoul, KR;
KIA MOTORS CORPORATION, Seoul, KR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F01N 3/10 (2006.01); B01D 53/94 (2006.01); F01N 3/20 (2006.01); B01J 23/89 (2006.01); F01N 11/00 (2006.01);
U.S. Cl.
CPC ...
F01N 3/106 (2013.01); B01D 53/9477 (2013.01); F01N 3/101 (2013.01); F01N 3/2066 (2013.01); F01N 11/007 (2013.01); B01D 2255/1021 (2013.01); B01D 2255/2047 (2013.01); B01D 2255/2063 (2013.01); B01D 2255/2065 (2013.01); B01D 2255/2066 (2013.01); B01D 2255/20715 (2013.01); B01D 2255/20738 (2013.01); B01D 2255/20761 (2013.01); B01D 2258/01 (2013.01); B01J 23/894 (2013.01); F01N 2370/04 (2013.01); F01N 2900/0601 (2013.01); F01N 2900/14 (2013.01);
Abstract
An after treatment system is disclosed. The after treatment system may include a three-way catalyst (TWC), a selective catalytic reduction (SCR) catalyst, and a CO clean-up catalyst (CUC) on an exhaust pipe through which an exhaust gas flows. The CUC may include a zeolite in which Cu and Fe are ion-exchanged and CeOin which Pt is supported, wherein a weight ratio of the CeOto a total weight of the CUC is 30-70 wt % such that the CUC purifies NHat a lean air/fuel ratio and purifies NHduring a delay time at a rich air/fuel ratio.