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. 26, 2013
Filed:
Nov. 21, 2008
Chang Dae Kim, Yongin, KR;
Jim Ha Lee, Seoul, KR;
Ji Ho Cho, Yongin, KR;
Ki Hyung Joo, Seongnam, KR;
Jin Woo Choung, Suwon, KR;
Chang Dae Kim, Yongin, KR;
Jim Ha Lee, Seoul, KR;
Ji Ho Cho, Yongin, KR;
Ki Hyung Joo, Seongnam, KR;
Jin Woo Choung, Suwon, KR;
Hyundai Motor Company, Seoul, KR;
Abstract
An apparatus for purifying exhaust gas may include a CPF device primarily oxidizing hydrocarbon and carbon monoxide in the exhaust gas by using a first DOC, and trapping and regenerating particulate material (PM), a DOC device mounted downstream of the CPF device, secondarily oxidizing the HC and the CO in the primarily oxidized exhaust gas by using a second DOC, and oxidizing nitrogen monoxide into nitrogen dioxide by using the second DOC, a nozzle mounted downstream of the DOC device, and dosing a reducing agent to the exhaust gas secondarily oxidized by the DOC device, and a selective catalytic reduction device mounted downstream of the nozzle, and reducing nitrogen oxide in the exhaust gas into nitrogen gas) by using the NOgenerated in the DOC device and the reducing agent.