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    Process for regenerating the catalytic activity of a catalyst that is located in the exhaust gas line of a diesel engine and that has at least one oxidizing function
    81.
    发明授权
    Process for regenerating the catalytic activity of a catalyst that is located in the exhaust gas line of a diesel engine and that has at least one oxidizing function 有权
    再生催化剂的催化活性的方法，所述催化剂位于柴油发动机的排气管线中并具有至少一种氧化功能

    公开(公告)号：US06691509B2

    公开(公告)日：2004-02-17

    申请号：US10056813

    申请日：2002-01-24

    申请人： Michael Hoffman ,  Harald Klein ,  Thomas Kreuzer

    发明人： Michael Hoffman ,  Harald Klein ,  Thomas Kreuzer

    IPC分类号： F01N300

    CPC分类号： F02D41/024 ,  F02B3/06 ,  F02D41/027 ,  F02D41/1446 ,  F02D41/405 ,  Y02T10/26 ,  Y02T10/44

    摘要： The present invention provides a process for regenerating the catalytic activity of catalysts that have oxidizing functions. A catalyst that is located in the exhaust gas line of a diesel engine that preferably contains a catalytically active coating on a honeycomb carrier that does not have a filter function and that has at least one oxidizing function is regenerated. As a result of time-restricted increases in the exhaust gas temperature upstream of the catalyst to a value greater than 450° C., the combustion of soot particles and hydrocarbons deposited on the catalyst is initiated, and thus, the catalytic activity of the catalyst is at least partly regenerated.

    摘要翻译： 本发明提供了具有氧化功能的催化剂的催化活性再生方法。 催化剂位于柴油发动机的排气管线中，优选在蜂窝状载体上含有不具有过滤功能并具有至少一种氧化功能的催化活性涂层。 作为催化剂上游排气温度上升到大于450℃的时间限制的结果，引发了沉积在催化剂上的烟灰颗粒和烃的燃烧，因此催化剂的催化活性 至少部分再生。

    METHOD AND DESULFURIZING NITROGEN OXIDE STORAGE CATALYSTS IN THE EXHAUST GAS SYSTEM OF A LEAN MIX ENGINE
    84.
    发明申请
    METHOD AND DESULFURIZING NITROGEN OXIDE STORAGE CATALYSTS IN THE EXHAUST GAS SYSTEM OF A LEAN MIX ENGINE 审中-公开
    炼油发动机排气系统中氮氧化物储存催化剂的方法与脱硫

    公开(公告)号：US20100064665A1

    公开(公告)日：2010-03-18

    申请号：US12520606

    申请日：2007-12-19

    申请人： Stephan Eckhoff ,  Susanne Philipp ,  Wilfried Mueller ,  Thomas Kreuzer

    发明人： Stephan Eckhoff ,  Susanne Philipp ,  Wilfried Mueller ,  Thomas Kreuzer

    IPC分类号： F01N9/00 ,  F01N3/00 ,  F01N3/10

    CPC分类号： F02D41/028 ,  F01N3/0814 ,  F01N3/0842 ,  F01N3/0885 ,  F01N3/101 ,  F01N3/106 ,  F01N3/2033 ,  F01N13/009 ,  F01N13/0093 ,  F01N13/04 ,  F01N13/107 ,  F01N2430/06 ,  F01N2430/08 ,  F01N2430/085 ,  F01N2560/025 ,  F01N2560/14 ,  F02D41/0082 ,  Y02T10/22 ,  Y02T10/26

    摘要： Lean burn engines require an exhaust gas system comprising nitrogen oxide storage catalysts for removal of nitrogen oxides from their exhaust gases. When the lean burn engine is operated with a sulphur-containing exhaust gas, the storage catalysts have to be desulphurized from time to time. During the desulphurization, there is the risk of high pollutant emissions. These emissions can be reduced when the cylinders of the lean burn engine are combined in two groups which release their exhaust gas to two assigned exhaust legs, in each of which is arranged at least one nitrogen oxide storage catalyst. The two exhaust legs are combined beyond the storage catalysts to form a common exhaust leg which contains a catalyst which possesses a three-way function under stoichiometric conditions. The two nitrogen oxide storage catalysts are desulphurized offset in time with respect to one another. While rich exhaust gas at a high temperature flows through one storage catalyst for desulphurization, lean exhaust gas flows through the second storage catalyst, in such a way that the combined exhaust gas is of stoichiometric composition over the entire desulphurization period. Under the stoichiometric conditions, the catalyst with three-way function is capable of converting hydrocarbons, carbon monoxide and nitrogen oxides to harmless components.

    摘要翻译： 精益燃烧发动机需要包括用于从其废气中除去氮氧化物的氮氧化物储存催化剂的废气系统。 当贫燃机用含硫废气进行操作时，必须不时地将储存催化剂脱硫。 在脱硫过程中，存在污染物排放高的风险。 当贫燃发动机的气缸组合成两组时，可以减少这些排放物，这两组燃烧器将废气排放到两个分配的排气支路，每个排放管排列有至少一个氮氧化物储存催化剂。 两个排气支路结合在储存催化剂之外以形成一个共同的排气支管，它包含一个在化学计量条件下具有三通功能的催化剂。 两种氮氧化物储存催化剂相对于彼此在时间上被脱硫。 虽然高温下的废气通过一个用于脱硫的储存催化剂流过，贫废气以这样的方式流过第二储存催化剂，使得组合废气在整个脱硫周期内具有化学计量组成。 在化学计量条件下，具有三向功能的催化剂能够将碳氢化合物，一氧化碳和氮氧化物转化为无害成分。

    METHOD FOR CATALYTICALLY COATING CERAMIC HONEYCOMB BODIES
    85.
    发明申请
    METHOD FOR CATALYTICALLY COATING CERAMIC HONEYCOMB BODIES 有权
    陶瓷蜂窝体材料催化涂层方法

    公开(公告)号：US20090305874A1

    公开(公告)日：2009-12-10

    申请号：US12158843

    申请日：2006-11-22

    申请人： Marcus Pfeifer ,  Paul Spurk ,  Markus Koegel ,  Egbert S.J. Lox ,  Thomas Kreuzer

    发明人： Marcus Pfeifer ,  Paul Spurk ,  Markus Koegel ,  Egbert S.J. Lox ,  Thomas Kreuzer

    IPC分类号： B01J29/072 ,  B01J23/30

    CPC分类号： B01J37/0215 ,  B01J35/04 ,  B01J35/10 ,  B01J35/1076 ,  C23C18/02 ,  C23C18/08 ,  Y10T428/24157

    摘要： The invention relates to a process for coating ceramic honeycomb bodies with a coating suspension containing, in a carrier liquid, catalyst components as solids and/or in dissolved form. The honeycomb bodies have parallel flow channels running through them. The walls of the flow channels generally have an open pore structure. To coat the channel walls and in particular also the interior surfaces of the pores with the coating suspension, it is proposed that the flow channels be temporarily alternately closed and the coating suspension be forced through the open pore structure of the channel walls. The coating is subsequently dried and calcined. To close the flow channels, it is possible to use thermally or chemically decomposable or soluble compositions which are decomposed or dissolved either during calcination or by means of a subsequent chemical treatment. The coated honeycomb bodies are preferably used for the purification of exhaust gases from automobiles.

    摘要翻译： 本发明涉及涂覆陶瓷蜂窝体的方法，该涂层悬浮液在载体液体中含有作为固体和/或溶解形式的催化剂组分。 蜂窝体具有平行的流动通道。 流动通道的壁通常具有开孔结构。 为了涂覆通道壁，特别是涂覆悬浮液的孔的内表面，建议将流动通道临时交替地封闭，并且将涂覆悬浮液强制通过通道壁的开孔结构。 随后将涂层干燥并煅烧。 为了封闭流动通道，可以使用在煅烧期间或通过随后的化学处理分解或溶解的热或可分解或可溶性组合物。 涂布的蜂窝体优选用于净化汽车废气。

    Particle Filter Provided with Catalytic Coating
    87.
    发明申请
    Particle Filter Provided with Catalytic Coating 审中-公开
    带有催化涂层的颗粒过滤器

    公开(公告)号：US20080026141A1

    公开(公告)日：2008-01-31

    申请号：US11628657

    申请日：2005-06-04

    申请人： Marcus Pfeifer ,  Rainer Domesle ,  Nicola Soeger ,  Christian Kuehn ,  Roger Staab ,  Thomas Kreuzer

    发明人： Marcus Pfeifer ,  Rainer Domesle ,  Nicola Soeger ,  Christian Kuehn ,  Roger Staab ,  Thomas Kreuzer

    IPC分类号： B01D53/94 ,  B01J35/00 ,  B01J37/02 ,  B05D1/12 ,  F01N3/28

    CPC分类号： B01D53/944

    摘要： The invention relates to particle filters having an open pore structure for separating particles from fluids, which, for modification of their properties or for treatment of the fluid to be filtered, are provided with additional metal oxides or mixed metal oxides and optionally with further catalytically active components. In particular, the invention relates to particle filters treated with a catalytically active material, which is used for the treatment of the waste gases from combustion processes, in particular for the treatment of the exhaust gases of internal combustion engines. By impregnation of the filter bodies in a solution of a metal oxide sol or a mixed metal oxide sol, the preformed sol particles are deposited on the pore surfaces. Consequently, catalytic activations of the filter with good temperature stability in combination with a moderate increase in the exhaust gas back-pressure are possible.

    摘要翻译： 本发明涉及具有用于从流体中分离颗粒的开孔结构的颗粒过滤器，为了改变其性能或处理待过滤的流体，提供另外的金属氧化物或混合金属氧化物，并且任选具有进一步的催化活性 组件。 特别地，本发明涉及用催化活性材料处理的颗粒过滤器，其用于处理来自燃烧过程的废气，特别是用于处理内燃机的废气。 通过在金属氧化物溶胶或混合金属氧化物溶胶的溶液中浸渍过滤体，预先形成的溶胶颗粒沉积在孔表面上。 因此，具有良好的温度稳定性的过滤器的催化活化与废气背压的适度增加相结合是可能的。

    METHOD FOR VERIFYING THE AGING CONDITION OF A CATALYTIC CONVERTER ON BOARD A VEHICLE
    89.
    发明申请
    METHOD FOR VERIFYING THE AGING CONDITION OF A CATALYTIC CONVERTER ON BOARD A VEHICLE 有权
    汽车车载催化转化器老化条件的方法

    公开(公告)号：US20110056280A1

    公开(公告)日：2011-03-10

    申请号：US12675341

    申请日：2008-08-29

    申请人： Martin Votsmeier ,  Juergen Gieshoff ,  Thomas Kreuzer

    发明人： Martin Votsmeier ,  Juergen Gieshoff ,  Thomas Kreuzer

    IPC分类号： G01M15/10

    CPC分类号： F01N11/002 ,  F01N11/005 ,  F01N2550/02 ,  Y02T10/47

    摘要： The invention describes a method for determining the light-off temperature of a catalytic converter on board a vehicle. The aging condition of the catalytic converter is determined by means of the method. To test the catalytic converter, the latter is loaded for example with a CO/HC test pulse. During the combustion of the additional CO and HC on the catalytic converter, an axial temperature profile is generated. The position of the maximum of said temperature profile along the catalytic converter is dependent on the current light-off temperature. The temperature profile travels through the catalytic converter and can be measured at the outlet of the catalytic converter as a time-dependent profile. The original axial temperature profile can be inferred from the time-dependent profile. Using a calculation program, the current light-off temperature of the catalytic converter on the vehicle can be determined. The method has the advantage that the test can take place at exhaust-gas temperatures considerably higher than the light-off temperature. In this way, it is ensured that the test pulse does not lead to increased pollutant emissions.

    摘要翻译： 本发明描述了一种用于确定车辆上的催化转化器的关闭温度的方法。 通过该方法确定催化转化器的老化条件。 为了测试催化转化器，后者例如用CO / HC测试脉冲加载。 在催化转化器附加CO和HC的燃烧过程中，产生轴向温度分布。 沿着催化转化器的最大温度曲线的位置取决于当前的关闭温度。 温度曲线通过催化转化器，并且可以在催化转化器的出口处测量为时间依赖的曲线。 原始轴向温度曲线可以从时间依赖曲线推断。 使用计算程序，可以确定车辆上的催化转化器的当前关闭温度。 该方法具有的优点是，该测试可以在远低于起燃温度的废气温度下进行。 这样就可以确保测试脉冲不会导致污染物排放增加。