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    Catalyst system for the treatment of exhaust gases from diesel engines
    2.
    发明授权
    Catalyst system for the treatment of exhaust gases from diesel engines 有权
    用于处理柴油发动机废气的催化剂系统

    公开(公告)号：US06220022B1

    公开(公告)日：2001-04-24

    申请号：US09180112

    申请日：1999-08-04

    申请人： Wilfried Müller ,  Jürgen Leyrer ,  Rainer Domesle ,  Klaus Ostgathe ,  Egbert Lox ,  Thomas Kreuzer

    发明人： Wilfried Müller ,  Jürgen Leyrer ,  Rainer Domesle ,  Klaus Ostgathe ,  Egbert Lox ,  Thomas Kreuzer

    IPC分类号： F01N310

    CPC分类号： B01D53/9454 ,  Y02T10/22

    摘要： A catalyst system for the treatment of exhaust gases from a diesel engine includes a first and a second catalyst reducing catalyst arranged in series in an exhaust gas treatment system. The first catalyst is located near the engine in a region of the exhaust gas treatment system in which the exhaust gas temperature reaches temperatures of more than 200° C. under full engine load. The second catalyst is located further from the engine in a region of the exhaust gas treatment system in which the exhaust gas temperature reaches a maximum of 500° C. under full engine load. The maximum nitrogen oxides reduction in the first catalyst takes place at a lower temperature than the maximum nitrogen oxides reduction in the second catalyst.

    摘要翻译： 用于处理来自柴油发动机的废气的催化剂系统包括在废气处理系统中串联布置的第一和第二催化剂还原催化剂。 第一催化剂位于排气处理系统的区域内的发动机附近，其中在全发动机负荷下，废气温度达到超过200℃的温度。 第二催化剂在排气处理系统的一个区域内比发动机更远，其中在全发动机负荷下废气温度达到最大值500℃。 第一催化剂中的最大氮氧化物还原在比第二催化剂中的最大氮氧化物还原更低的温度下进行。