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. 21, 2009
Filed:
Feb. 02, 2005
Daisuke Shirai, Tokyo, JP;
Naobumi Yamada, Tokyo, JP;
Hitoshi Hiramoto, Tokyo, JP;
Isamu Kanaya, Ageo Saitama, JP;
Hiroki Ueno, Ageo Saitama, JP;
Daisuke Shirai, Tokyo, JP;
Naobumi Yamada, Tokyo, JP;
Hitoshi Hiramoto, Tokyo, JP;
Isamu Kanaya, Ageo Saitama, JP;
Hiroki Ueno, Ageo Saitama, JP;
Tokyo Roki Co., Ltd., Kanagawa, JP;
Nissan Diesel Motor Co., Ltd., Saitama, JP;
Abstract
The flow of exhaust gas flowing through the SCR muffler becomes good, thus improving the efficiency of purging nitrogen oxide (NOx) contained in exhaust gas. Further, vibrations that are caused by vibrations of the vehicle, exhaust gas, and the like, to which a reducing agent, etc., supplying nozzle is subject, are suppressed or reduced, thus improving the efficiency of an SCR catalyst purging nitrogen oxide (NOx) and the durability of the reducing agent, etc., supplying nozzle. The SCR muffler comprises an SCR catalystfor selectively reducing and purging nitrogen oxide (NOx) contained in exhaust gas; an exhaust pipethat allows the exhaust gas to flow into the SCR catalyst; and a reducing agent, etc., supplying meansthat supplies a reducing agent or a reducing agent precursor to the exhaust gas. A platehaving air holeswhich disperse and make a flow of the exhaust gas uniform is provided downstream of the reducing agent, etc., supplying means and upstream of the SCR catalyst. The air holesare arranged in only an area greater in diameter than the exhaust pipe and in a staggered fashion so as to form concentric circles. Further, the reducing agent, etc., supplying nozzleas the meansis inserted through a platehaving air holes, and the plate is held in the exhaust pipe.