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公开(公告)号:US20150096286A1
公开(公告)日:2015-04-09
申请号:US14360809
申请日:2012-11-21
发明人: Shunsuke Toshioka , Koichiro Fukuda , Shigeki Nakayama , Noriyoshi Takahashi , Atsushi Kidokoro , Sakutaro Hoshi , Satoshi Watanabe
IPC分类号: F01N3/20
CPC分类号: F01N3/206 , B01D53/90 , B01D53/9431 , B01D53/9477 , B01D53/9495 , B01D2251/2067 , F01N3/108 , F01N3/2066 , F01N3/208 , F01N13/009 , F01N13/0093 , F01N13/011 , F01N13/107 , F01N2340/02 , F01N2560/06 , F01N2560/14 , F01N2570/14 , F01N2610/00 , F01N2610/02 , F01N2610/146 , F01N2900/1404 , F01N2900/1602 , F02B37/001 , F02B37/007 , Y02T10/144 , Y02T10/24
摘要: An exhaust gas purification device for an internal combustion engine purifies exhaust gas in a first exhaust path and a second exhaust path. The device includes a confluent path. The confluent path extends from a confluent section of the first exhaust path and the second exhaust path. A first auxiliary NOx catalyst is provided in the first exhaust path. A second auxiliary NOx catalyst is provided in the second exhaust path. A main NOx catalyst is provided in the confluent path. A first addition section adds an ammonia source in a first addition amount to a section upstream of the first auxiliary NOx catalyst to supply urea water to the first auxiliary NOx catalyst. A second addition section adds an ammonia source in a second addition amount to a section upstream of the second auxiliary NOx catalyst to supply urea water to the second auxiliary NOx catalyst.
摘要翻译: 用于内燃机的废气净化装置净化第一排气通路和第二排气路径中的废气。 该装置包括汇合路径。 汇合路径从第一排气通道和第二排气路径的汇合部分延伸。 第一辅助NOx催化剂设置在第一排气路径中。 第二辅助NOx催化剂设置在第二排气路径中。 在合流路径上设置有主要的NOx催化剂。 第一添加部将第一添加量的氨源添加到第一辅助NOx催化剂上游的部分,以向第一辅助NOx催化剂供给尿素水。 第二添加部分将第二添加量的氨源添加到第二辅助NOx催化剂上游的部分,以将尿素水供应到第二辅助NOx催化剂。