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    Exhaust gas purifying system
    19.
    发明授权
    Exhaust gas purifying system 失效
    废气净化系统

    公开(公告)号：US06729125B2

    公开(公告)日：2004-05-04

    申请号：US10244473

    申请日：2002-09-17

    申请人： Katsuo Suga ,  Yasunari Hanaki ,  Maki Shimada ,  Hiroshi Akama ,  Motohisa Kamijo ,  Hironori Wakamatsu

    发明人： Katsuo Suga ,  Yasunari Hanaki ,  Maki Shimada ,  Hiroshi Akama ,  Motohisa Kamijo ,  Hironori Wakamatsu

    IPC分类号： F01N300

    CPC分类号： B01D53/9454 ,  F01N3/0814 ,  F01N3/0842 ,  F01N3/0871 ,  F01N13/009 ,  F01N13/0093 ,  F01N2240/16 ,  F02D41/10 ,  Y02A50/2324 ,  Y02T10/22

    摘要： An exhaust gas purifying system for an internal combustion engine mounted on an automotive vehicle. The exhaust gas purifying system includes an exhaust gas component concentration regulating device disposed in an exhaust gas passageway of the engine, for regulating concentrations of gas components in exhaust gas discharged from the engine such that the concentrations of carbon monoxide and hydrogen are respectively not more than 2.0% by volume and not less than 0.5% by volume and such that a volume concentration ratio of [hydrogen/carbon monoxide] is not smaller than 0.5, in rich and stoichiometric conditions of exhaust gas. Additionally, a NOx adsorbing and reducing catalyst is disposed in the exhaust gas passageway downstream of the exhaust gas component concentration regulating device, for adsorbing nitrogen oxides in a lean condition of the exhaust gas and reducing the nitrogen oxides into nitrogen in the rich and stoichiometric conditions.

    摘要翻译： 一种用于安装在机动车辆上的内燃机的排气净化系统。 废气净化系统包括排气组分浓度调节装置，其设置在发动机的废气通道中，用于调节从发动机排出的废气中的气体成分的浓度，使得一氧化碳和氢气的浓度分别不大于 2.0体积％且不小于0.5体积％，并且在废气的富集和化学计量条件下，[氢/一氧化碳]的体积浓度比不小于0.5。 另外，在废气成分浓度调节装置的下游侧的排气通路中设置有NOx吸附还原催化剂，用于吸附废气中的氮氧化物，并且在浓的化学计量条件下将氮氧化物还原为氮 。

    Exhaust gas purifying catalyst and method of producing same
    20.
    发明授权
    Exhaust gas purifying catalyst and method of producing same 有权
    废气净化催化剂及其制造方法

    公开(公告)号：US06514905B1

    公开(公告)日：2003-02-04

    申请号：US09610110

    申请日：2000-07-05

    申请人： Yasunari Hanaki ,  Katsuo Suga

    发明人： Yasunari Hanaki ,  Katsuo Suga

    IPC分类号： B01J2358

    CPC分类号： B01D53/945 ,  B01J23/58 ,  B01J37/0242 ,  B01J37/0244 ,  Y02A50/2324 ,  Y02T10/22

    摘要： An exhaust gas purifying catalyst for exhaust gas discharged from a lean-burn engine of an automotive vehicle. The catalyst comprises a refractory inorganic carrier. A catalytic layer is coated on the refractory inorganic carrier. The exhaust gas purifying catalyst layer contains platinum and at least one noble metal selected from the group consisting of palladium and rhodium, and a NOx trapping substance. In the catalytic layer, platinum exists close enough to the NOx trapping substance to accept NO2 from the NOx trapping substance which NO2 is produced according to reaction expressed by the following chemical equation: M(NO3)2→2NO2+3/2O2+MO where M is the NOx trapping substance.

    摘要翻译： 一种用于从机动车辆的稀薄燃烧发动机排出的废气的废气净化催化剂。 催化剂包含耐火无机载体。 将催化层涂覆在耐火无机载体上。 废气净化催化剂层含有铂和选自钯和铑的至少一种贵金属和NOx捕获物质。 在催化剂层中，铂的存在与NOx捕获物接近，以接收根据以下化学方程表示的反应产生NO 2的NO x捕获物质的NO 2：M（NO 3）2→2NO 2 + 3 / 2O 2 + MO 其中M是NOx捕集物质。