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    • 33. 发明授权
    • Exhaust gas purification apparatus for internal combustion engine
    • 内燃机废气净化装置
    • US09157354B2
    • 2015-10-13
    • US13639559
    • 2010-04-08
    • Yuki BisaijiKohei YoshidaMikio Inoue
    • Yuki BisaijiKohei YoshidaMikio Inoue
    • B01D53/94F01N3/10F01N3/08F01N3/023F01N3/035F01N3/20
    • F01N3/0814F01N3/0231F01N3/035F01N3/0821F01N3/0885F01N3/2066F01N2610/02F01N2610/03F01N2900/1612Y02T10/24
    • An exhaust gas purification apparatus for an internal combustion engine comprises a NOx selective reduction catalyst provided in an exhaust passage of an internal combustion engine; an upstream side oxidation catalyst which is a catalyst having an oxidizing ability provided in the exhaust passage upstream from the NOx selective reduction catalyst and which includes a carrier for carrying a noble metal for oxidation, the carrier being formed of a basic carrier; and a reducing agent supply until which supplies a reducing agent to an exhaust gas allowed to flow into the NOx selective reduction catalyst. Accordingly, even when the oxidation catalyst causes the SOx poisoning in the exhaust gas purification apparatus for the internal combustion engine having the oxidation catalyst and the NOx selective reduction catalyst provided in the exhaust passage, the reduction efficiency of NOx reduced by the aid of the NOx selective reduction catalyst is favorably maintained.
    • 一种用于内燃机的废气净化设备包括设置在内燃机的排气通道中的NOx选择还原催化剂; 上游侧氧化催化剂,其是具有氧化能力的催化剂,其设置在NOx选择还原催化剂上游的排气通道中,并且包括用于承载用于氧化的贵金属的载体,载体由碱性载体形成; 以及还原剂供应,直到向排气中的还原剂供应流入NOx选择还原催化剂。 因此,即使氧化催化剂在具有氧化催化剂的内燃机的排气净化装置和设置在排气通路中的NOx选择还原催化剂的SO x中毒的情况下,也可以借助于NOx减少NOx的还原效率 有选择地还原催化剂。