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公开(公告)号:US20070101703A1
公开(公告)日:2007-05-10
申请号:US11643710
申请日:2006-12-22
申请人: Isamu Kanaya , Koutarou Honda , Tomoko Amemiya , Kiminobu Hirata , Nobuhiko Masaki , Shinya Obana , Daisuke Shirai , Hitoshi Hiramoto , Naobumi Yamada
发明人: Isamu Kanaya , Koutarou Honda , Tomoko Amemiya , Kiminobu Hirata , Nobuhiko Masaki , Shinya Obana , Daisuke Shirai , Hitoshi Hiramoto , Naobumi Yamada
IPC分类号: F01N3/00
CPC分类号: F01N3/206 , B01D53/9431 , B01D2251/2067 , B01F3/04049 , B01F5/0451 , B01F5/0616 , B01F5/0646 , B01F5/0653 , F01N3/2066 , F01N3/2892 , F01N13/009 , F01N2240/20 , F01N2570/14 , F01N2610/02 , Y02A50/2344 , Y02T10/24
摘要: An exhaust emission purifying apparatus has a NOx reduction catalytic converter in an exhaust passage of an engine, for purifying nitrogen oxides in the exhaust gas by reduction with urea aqueous solution; an injection nozzle injecting the urea solution toward an exhaust upstream side of the converter in the exhaust passage; and fins disposed on an exhaust upstream side of an injection position of the urea solution in the injection nozzle, for generating a spiral swirling flow of the gas swirling about a center corresponding to the central axis of an exhaust pipe. The swirling flow generated in the exhaust gas prior to the injection-supply of the urea aqueous solution promotes mixing of the solution with the gas to thereby promote the hydrolysis of the urea solution. And the exhaust gas and ammonia generated from the urea solution are uniformly mixed together.
摘要翻译: 排气净化装置在发动机的排气通路中具有NOx还原催化转化器,用尿素水溶液还原来净化废气中的氮氧化物; 喷射喷嘴,在所述排气通路中朝向所述转换器的排气上游侧喷射所述尿素溶液; 以及翅片,其设置在所述喷射喷嘴中的所述尿素溶液的喷射位置的排气上游侧,用于产生围绕与排气管的中心轴对应的中心旋转的气体的螺旋旋转流。 在尿素水溶液的注入供给之前在排气中产生的涡流促进溶液与气体的混合,从而促进尿素溶液的水解。 将由尿素溶液产生的废气和氨均匀地混合在一起。
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公开(公告)号:US20070035832A1
公开(公告)日:2007-02-15
申请号:US11495636
申请日:2006-07-31
申请人: Kiminobu Hirata , Nobuhiko Masaki , Hisashi Akagawa , Yuji Yajima
发明人: Kiminobu Hirata , Nobuhiko Masaki , Hisashi Akagawa , Yuji Yajima
IPC分类号: G02B27/28
CPC分类号: F01N3/2066 , B01D53/9409 , F01N3/206 , F01N3/208 , F01N2610/02 , F01N2610/10 , F01N2610/1406 , F01N2610/1453 , F01N2610/1466 , F01N2610/1486 , F01N2900/1811 , F01N2900/1818 , Y02T10/24
摘要: In an exhaust emission purifying apparatus for an internal combustion engine, for adding a reducing agent for NOx to the exhaust gas to thereby purify NOx in the exhaust gas, the mixing of the reducing agent injected by an injection nozzle with the exhaust gas is accelerated. To this end, in the apparatus of the present invention, the injection nozzle for the urea water is disposed to be opposite to the flow of the exhaust gas, or to face upward in a vertical direction.
摘要翻译: 在用于内燃机的废气净化装置中,为了将废气中的NO x添加到废气中,从而净化废气中的NO x,混合 的由喷嘴与废气喷射的还原剂加速。 为此,在本发明的装置中,尿素水的注入喷嘴配置成与排气的流动相反,或者在垂直方向上面向上。
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