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    Catalyst for cleaning up the exhaust gases of a diesel engine
    31.
    发明授权
    Catalyst for cleaning up the exhaust gases of a diesel engine 有权
    用于清洁柴油发动机废气的催化剂

    公开(公告)号：US06677264B1

    公开(公告)日：2004-01-13

    申请号：US09442633

    申请日：1999-11-18

    申请人： Harald Klein ,  Wolfgang Strehlau ,  Egbert Lox ,  Thomas Kreuzer ,  Wilfried Müller

    发明人： Harald Klein ,  Wolfgang Strehlau ,  Egbert Lox ,  Thomas Kreuzer ,  Wilfried Müller

    IPC分类号： B01J2116

    CPC分类号： B01D53/945 ,  B01J23/58 ,  B01J23/63 ,  B01J29/068 ,  B01J37/0244 ,  B01J37/0246 ,  F02B3/06 ,  Y02T10/22

    摘要： A catalyst for purifying exhaust gases of a diesel engine. The catalyst contains two functional layers superimposed on an inert supporting body, whereby the first layer, which is situated directly on the supporting body, has a nitrogen oxide storage function and the second layer, which is in direct contact with the exhaust gas, has a catalytic function. The second functional layer additionally has a hydrocarbon-storage function and its catalytic function is provided by catalytically active noble metals of the platinum group which are deposited in highly dispersed form on finely divided, acidic carrier materials. Nitrogen oxides in the oxygen-rich exhaust gas of a diesel engine can be converted with optimal utilization of the reductive constituents contained in the exhaust gas. For this purpose, no reducing agents going beyond the reductive components (carbon monoxide and hydrocarbons) which are contained as a consequence of incomplete combustion need to be added to the exhaust gas. Nevertheless, rates of conversion in respect of the nitrogen oxides are obtained, averaged over practical driving cycles, which lie distinctly above the rates of conversion of conventional reduction catalysts.

    摘要翻译： 一种用于净化柴油发动机废气的催化剂。 催化剂含有叠置在惰性支撑体上的两个功能层，由此直接位于支撑体上的第一层具有氮氧化物存储功能，与废气直接接触的第二层具有 催化功能。 第二功能层另外具有烃储存功能，其催化功能由铂组的催化活性贵金属提供，其以高度分散形式沉积在细分的酸性载体材料上。 柴油发动机的富氧废气中的氮氧化物可以通过废气中所含的还原成分的最佳利用来转化。 为此，不需要在排气中加入超过由于不完全燃烧而含有的还原成分（一氧化碳和碳氢化合物）的还原剂。 然而，获得了关于氮氧化物的转化率，在实际的驱动循环中是平均的，其明显高于常规还原催化剂的转化速率。

    Process for operating a three-way catalyst that contains an oxygen-storage component
    32.
    发明授权
    Process for operating a three-way catalyst that contains an oxygen-storage component 有权

    公开(公告)号：US06655129B2

    公开(公告)日：2003-12-02

    申请号：US10056814

    申请日：2002-01-24

    申请人： Dieter Lindner ,  Jorg-Michael Richter ,  Egbert Lox ,  Thomas Kreuzer ,  Martin Votsmeier ,  Lothar Mussmann

    发明人： Dieter Lindner ,  Jorg-Michael Richter ,  Egbert Lox ,  Thomas Kreuzer ,  Martin Votsmeier ,  Lothar Mussmann

    IPC分类号： F01N300

    CPC分类号： F02D41/2458 ,  F02D41/0295 ,  F02D41/1408 ,  F02D41/1456 ,  F02D2041/1437 ,  F02D2200/0814 ,  Y02T10/22

    摘要： A process is provided for operating a three-way catalyst that contains an oxygen storage component, that has a minimum and a maximum filling degree for oxygen and that is located in the exhaust gas line of an internal combustion engine. The air/fuel mixture supplied to the engine is varied in such a way that the filling degree of the oxygen storage component in the catalyst is held within a set-point interval between the minimum and maximum filling degree. According to this process, in order to regulate the air/fuel mixture, migration of the filling degree out of the set-point interval is checked in a test phase in such a way that the filling degree is increased or lowered relative to the instantaneous value (initial value) by short-term enrichment or reduction in richness of the air/fuel mixture supplied to the engine by a certain amount and immediately returned to the initial value by a short-term opposing change in the air/fuel mixture (lean/rich pulse sequence or rich/lean pulse sequence). In the case of a breakthrough of lean or rich exhaust gas through the catalyst during the test phase, the air/fuel mixture is enriched or reduced in richness in order to correct the filling degree, wherein the amount by which the filling degree during the test phase is increased or decreased is such that no breakthrough of lean or rich exhaust gas takes place through the catalyst when the filling degree of the oxygen storage component is within the set-point interval.

    Catalyst material
    33.
    发明授权
    Catalyst material 有权
    催化剂材料

    公开(公告)号：US06475951B1

    公开(公告)日：2002-11-05

    申请号：US09513341

    申请日：2000-02-25

    申请人： Rainer Domesle ,  Ulrich Göbel ,  Lothar Mussmann ,  Egbert Lox ,  Thomas Kreuzer

    发明人： Rainer Domesle ,  Ulrich Göbel ,  Lothar Mussmann ,  Egbert Lox ,  Thomas Kreuzer

    IPC分类号： B01J2300

    CPC分类号： B01D53/945 ,  B01J23/002 ,  B01J23/58 ,  B01J23/63 ,  B01J37/0205 ,  B01J37/0248 ,  B01J2523/00 ,  Y02T10/22 ,  B01J2523/3712 ,  B01J2523/48

    摘要： A powdered catalyst material based on aluminum oxide, which contains at least one basic metal oxide and at least one noble metal from the platinum group of the Periodic Table of Elements in addition to aluminum oxide. The catalyst material is obtainable by loading a support material already stabilized by basic oxides by renewed impregnation with further basic oxides. After drying and calcining this post-impregnated material at temperatures below 800° C., the catalytically active noble metals are also incorporated into the support material by impregnation.

    摘要翻译： 基于氧化铝的粉末状催化剂材料，其除了氧化铝之外还含有至少一种碱金属氧化物和至少一种来自元素周期表的铂族的贵金属。 催化剂材料可以通过用另外的碱性氧化物再次浸渍加载已经通过碱性氧化物稳定的载体材料而获得。 在低于800℃的温度下干燥和煅烧该浸渍后材料之后，催化活性的贵金属也通过浸渍掺入载体材料中。

    Method And Apparatus For Coating A Carrier
    37.
    发明申请
    Method And Apparatus For Coating A Carrier 审中-公开
    涂层载体的方法和装置

    公开(公告)号：US20080118628A1

    公开(公告)日：2008-05-22

    申请号：US10553359

    申请日：2004-04-16

    申请人： Michael Harris ,  Dieter Detterbeck ,  Egbert Lox ,  Thomas Kreuzer

    发明人： Michael Harris ,  Dieter Detterbeck ,  Egbert Lox ,  Thomas Kreuzer

    IPC分类号： B05C11/00 ,  C23C16/52

    CPC分类号： B01J35/04 ,  B01J37/0215 ,  B05D3/0493 ,  B05D7/22

    摘要： This invention relates to a method and a corresponding apparatus for coating open-pored bodies with at least one coating suspension. In particular, the coating suspension has solids and solutes in a liquid medium in a quantity in wet state which is to correspond to at least a required target quantity. The coating operation has a variation in the applied wet coating quantity from one body to the other. The method according to the invention is characterized by the steps of: coating the body with an actual quantity of the coating suspension, which is always larger than the required target quantity taking the variation of the coating operation into account, determining the difference between the actual quantity and the required target quantity, and reducing the difference between actual quantity and target quantity by removing still wet coating suspension.

    摘要翻译： 本发明涉及用至少一种涂层悬浮液涂覆开孔体的方法和相应的装置。 特别地，涂层悬浮液具有在湿状态下的液体介质中的固体和溶质，其至少对应于所需的目标量。 涂布操作具有从一个体到另一个体的涂覆湿涂布量的变化。 根据本发明的方法的特征在于以下步骤：考虑到涂层操作的变化，涂覆实际量的涂覆悬浮液，其总是大于所需目标量，确定实际的 数量和所需目标数量，并通过清除静态湿涂层悬浮液减少实际数量和目标数量之间的差异。

    Method of operating a catalyst which includes components for storing hydrocarbon
    39.
    发明申请
    Method of operating a catalyst which includes components for storing hydrocarbon 有权
    操作包含用于储存烃的组分的催化剂的方法

    公开(公告)号：US20070166827A1

    公开(公告)日：2007-07-19

    申请号：US10556548

    申请日：2004-05-12

    申请人： Martin Votsmeier ,  Frank Schutze ,  Stephan Malmberg ,  Jurgen Gieshoff ,  Egbert Lox ,  Thomas Kreuzer

    发明人： Martin Votsmeier ,  Frank Schutze ,  Stephan Malmberg ,  Jurgen Gieshoff ,  Egbert Lox ,  Thomas Kreuzer

    IPC分类号： G01N35/08

    CPC分类号： F01N3/0835 ,  F01N3/0814 ,  F01N3/20 ,  F01N9/005 ,  F01N11/00 ,  F01N2370/24 ,  F01N2430/00 ,  F01N2430/06 ,  F01N2430/08 ,  F01N2430/085 ,  F01N2550/02 ,  F01N2550/03 ,  F02D41/027 ,  F02D2200/0802 ,  Y02T10/47 ,  Y10T436/12

    摘要： This invention relates to a method of operating a catalyst for treating the exhaust gas of an internal combustion engine, the catalyst comprising, in addition to catalytically active noble metals, also storage components for storing hydrocarbons. During engine operating phases at low exhaust-gas temperatures, such a catalyst stores the hydrocarbons contained in the exhaust gas without burning them. When the exhaust-gas temperature rises, these hydrocarbons are desorbed again and then oxidized at the catalytically active noble metals. This process can lead to uncontrolled, vigorous combustion of the hydrocarbons stored on the catalyst and, therefore, damage to the catalyst. According to the invention, this damage is avoided by continuously calculating the respective loading of the storage components with hydrocarbons and repeatedly regenerating the storage components depending on the loading by temporarily raising the exhaust-gas temperature before damage to the catalyst can occur.

    摘要翻译： 本发明涉及一种操作用于处理内燃机废气的催化剂的方法，催化剂除了催化活性贵金属外，还包括用于储存烃的储存组分。 在低废气温度的发动机运转阶段，这样的催化剂将不含燃烧物的废气中所含的烃储存在废气中。 当废气温度升高时，这些烃再次解吸，然后在催化活性贵金属处被氧化。 该方法可导致存储在催化剂上的烃的不受控制的剧烈燃烧，因此对催化剂的损害。 根据本发明，通过用碳氢化合物连续地计算储存部件的负荷并且可以在可能发生催化剂的损坏之前通过临时提高排气温度来重新再生存储部件，从而避免了这种损坏。