Device for cleaning exhaust fumes
    3.
    发明授权
    Device for cleaning exhaust fumes 失效
    清洁废气的设备

    公开(公告)号:US06342192B1

    公开(公告)日:2002-01-29

    申请号:US08313166

    申请日:1994-10-07

    Abstract: The invention relates to a catalyst for cleaning the exhaust gases from internal combustion engines, especially diesel engines, comprising a monolithic body having longitudinally extending, open throughchannels coated with a surface-enlarging washcoat layer which contains one or more catalytically active precious metals. In order to reduce the tendency of the catalyst to oxidize and absorb (be enriched with) sulphur dioxide, the washcoat layer of the catalyst is based on silicon carbide and is substantially free from aluminum oxide. A method for preparing the catalyst, the use of the catalyst, as well as an exhaust gas cleaning system and a motor vehicle equipped with the catalyst, are also disclosed.

    Abstract translation: 本发明涉及一种用于清洁来自内燃机,特别是柴油发动机的废气的催化剂,其包括具有纵向延伸的开放通道的整体式主体,涂覆有包含一种或多种催化活性的贵金属的表面扩大的修补基面涂层。 为了降低催化剂氧化和吸收(富集)二氧化硫的趋势,催化剂的修补基面涂层基于碳化硅并且基本上不含氧化铝。 还公开了制备催化剂的方法,催化剂的使用以及配备有催化剂的废气净化系统和机动车辆。

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