GASOLINE ENGINE EMISSIONS TREATMENT SYSTEMS HAVING PARTICULATE TRAPS
    19.
    发明公开
    GASOLINE ENGINE EMISSIONS TREATMENT SYSTEMS HAVING PARTICULATE TRAPS 有权
    PARTIKELFILTER AUFWEISENDE SYSTEME ZUR BEHANDLUNG VON BENZINMOTOREMISSIONISENEN

    公开(公告)号:EP2318673A2

    公开(公告)日:2011-05-11

    申请号:EP09707406.6

    申请日:2009-02-04

    Abstract: Provided are exhaust systems and components suitable for use in conjunction with gasoline direct injection (GDI) engines to capture particulates in addition to reducing gaseous emission such as hydrocarbons, nitrogen oxides, and carbon monoxides. Exhaust treatment systems comprising a three-way conversion (TWC) catalyst located on a particulate trap are provided. An exemplary particulate trap is a soot filter. Additional treatment components can be added downstream of the particulate trap, including NOtraps and SCR catalysts. The TWC catalyst can be coated on both the inlet side and the outlet side of the particulate trap. Alternatively, an oxidation catalyst can be deposited on a particulate trap. Methods of making and using the same are also provided.

    Abstract translation: 提供了适合与汽油直喷(GDI)发动机结合使用的排气系统和部件,除了还原气体排放物之外还捕获微粒,例如烃,氮氧化物和一氧化碳。 提供了包括位于颗粒捕集器上的三向转换(TWC)催化剂的排气处理系统。 示例性的微粒捕集器是烟尘过滤器。 可以在颗粒捕集器的下游添加额外的处理组分,包括NOx捕集阱和SCR催化剂。 TWC催化剂可以涂覆在颗粒捕集器的入口侧和出口侧。 或者,氧化催化剂可以沉积在颗粒捕集器上。 还提供了制备和使用它们的方法。

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