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:
Dec. 25, 2012
Filed:
Dec. 12, 2008
Chang Dae Kim, Yongin, KR;
Chang Dae Kim, Yongin, KR;
Hyundai Motor Company, Seoul, KR;
Kia Motors Corporation, Seoul, KR;
Abstract
An apparatus for reducing nitrogen oxide in an exhaust pipe, may include a nitrogen oxide sensor that is mounted in the exhaust pipe and that measures amount of the nitrogen oxide in exhaust gas, a nozzle that is disposed on the exhaust pipe to be spaced apart from the nitrogen oxide sensor to a downstream side of the nitrogen oxide sensor by a first predetermined length and that injects urea corresponding to the amount of the nitrogen oxide, a mixer that mixes the urea with the exhaust gas and that is disposed at a downstream side of the nozzle on the exhaust pipe to be spaced apart by a second predetermined length from the nozzle, and a de-nitrification catalyst reaction device that is disposed at a downstream side of the mixer on the exhaust pipe, purifies the nitrogen oxide, and includes an inlet portion having a predetermined length.