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109 条记录 (耗时 0.029 秒)

    Method for coating a catalyst carrier containing two different partial structures with a catalytically active coating, and catalyst obtained thereby
    42.
    发明授权
    Method for coating a catalyst carrier containing two different partial structures with a catalytically active coating, and catalyst obtained thereby 有权
    用催化活性涂层涂覆含有两种不同部分结构的催化剂载体的方法和由此得到的催化剂

    公开(公告)号：US07811969B2

    公开(公告)日：2010-10-12

    申请号：US10535589

    申请日：2003-11-04

    申请人： Rainer Domesle ,  Thomas Kreuzer ,  Egbert Lox

    发明人： Rainer Domesle ,  Thomas Kreuzer ,  Egbert Lox

    IPC分类号： B01J21/04

    CPC分类号： B01J37/0018 ,  B01J35/0006 ,  B01J35/04 ,  B01J35/06 ,  B01J37/0217 ,  F01N2250/02 ,  F01N2330/10

    摘要： The invention relates to a process for the coating of a catalyst support with a catalytically active coat using a coating dispersion, the catalyst support containing at least two partial structures which differ in their absorptivity for the coating dispersion. The process is characterized in that the absorptivity of the partial structures is modified relative to one another by precoating of the catalyst support with a material which can be burnt out or with liquid, and the catalytic coat is then applied to the filter body in a known manner, dried and/or calcined.

    摘要翻译： 本发明涉及一种使用涂料分散体涂覆具有催化活性涂层的催化剂载体的方法，所述催化剂载体含有至少两种对于涂料分散体的吸收率不同的部分结构。 该方法的特征在于，部分结构的吸收率相对于彼此通过用可燃烧或用液体的材料预涂覆催化剂载体而改变，然后将催化涂层以已知的方式施加到过滤器体上 方式，干燥和/或煅烧。

    Process for regenerating a nitrogen oxides storage catalyst
    43.
    发明授权
    Process for regenerating a nitrogen oxides storage catalyst 有权
    再生氮氧化物储存催化剂的方法

    公开(公告)号：US07351677B2

    公开(公告)日：2008-04-01

    申请号：US10630303

    申请日：2003-07-29

    申请人： Friedemann Rohr ,  Peter Kattwinkel ,  Stefan D. Peter ,  Thomas Kreuzer ,  Egbert Lox

    发明人： Friedemann Rohr ,  Peter Kattwinkel ,  Stefan D. Peter ,  Thomas Kreuzer ,  Egbert Lox

    IPC分类号： B01J20/34

    CPC分类号： F02D41/0275 ,  B01D53/9495 ,  B01D53/96 ,  F01N3/0885 ,  F01N2430/06 ,  F01N2560/026 ,  Y02T10/20

    摘要： The present invention provides a process and a device for regeneration of a nitrogen oxide storage catalyst in the exhaust system of a diesel engine. The process comprises a first and a second regeneration strategy. The first regeneration strategy is applied when the exhaust gas temperature is above a threshold value and comprises changing the air/fuel-ratio from a lean to a rich value during a first regeneration period. The second regeneration strategy is applied when the exhaust gas temperature is below a threshold value and comprises switching the air/fuel-ratio back and forth between lean and rich air/fuel-ratios, forming a sequence of between 2 and 10 rich pulses and between 2 and 10 lean pulses during a second regeneration period.

    摘要翻译： 本发明提供一种用于在柴油发动机的排气系统中再生氮氧化物存储催化剂的方法和装置。 该方法包括第一和第二再生策略。 当废气温度高于阈值时，应用第一再生策略，并且包括在第一再生期间将空气/燃料比从贫值改变为浓值。 当废气温度低于阈值时，应用第二再生策略，并且包括在稀空燃比之间来回切换空燃比，形成富二脉冲之间的序列，介于 在第二再生期间的2和10个贫脉冲。

    Process for reducing the nitrogen oxides content of exhaust gas from an internal combustion engine
    49.
    发明授权
    Process for reducing the nitrogen oxides content of exhaust gas from an internal combustion engine 失效
    降低来自内燃机的废气的氮氧化物含量的方法

    公开(公告)号：US06238525B1

    公开(公告)日：2001-05-29

    申请号：US09299630

    申请日：1999-04-27

    申请人： Egbert Lox ,  Jürgen Gieshoff ,  Wolfgang Strehlau ,  Thomas Kreuzer

    发明人： Egbert Lox ,  Jürgen Gieshoff ,  Wolfgang Strehlau ,  Thomas Kreuzer

    IPC分类号： C01B2100

    CPC分类号： F01N3/0842 ,  B01D53/32 ,  B01D53/92 ,  B01D53/9431 ,  F01N3/0807 ,  F01N3/0892 ,  F01N2240/28 ,  F02B1/04

    摘要： A process for reducing the nitrogen oxides content of the exhaust gas from an internal combustion engine includes treating the exhaust gas in an electric gas discharge such that at least one of nitrogen dioxide or nitric acid are formed from nitrogen oxides in the exhaust gas; storing the nitrogen dioxides and/or the nitric acid in the form of nitrates on a nitrogen oxides storage material during phases when the engine operates with a greater than a stoichiometric air/fuel ratio (i.e., the storage phase); decomposing the nitrates to give nitrogen oxides during brief phases when the engine operates with a less than the stoichiometric air/fuel ratio (i.e., the desorption phase); and reducing the nitrogen oxides which are released from the storage material to nitrogen. The nitrogen oxides storage material may be located in an electric gas discharge zone, and the exhaust gas may be passed through the discharge and then over the storage material.

    摘要翻译： 用于降低来自内燃机的废气的氮氧化物含量的方法包括以排气中的氮氧化物形成至少一种二氧化氮或硝酸的电气放电来处理排气， 当发动机以大于化学计量的空气/燃料比（即储存阶段）运转时，在氮氧化物储存材料中将氮氧化物和/或硝酸以硝酸盐的形式储存在相中。 当发动机以小于化学计量的空气/燃料比（即，解吸阶段）运行时，在短时间内分解硝酸盐以产生氮氧化物; 并将从储存材料释放的氮氧化物还原成氮气。 氮氧化物存储材料可以位于电气放电区域中，并且排气可以通过排出物，然后通过存储材料。