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.

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。

公开(公告)号：US08136349B2

公开(公告)日：2012-03-20

申请号：US10556643

申请日：2004-05-12

申请人： Jürgen Gieshoff ,  Martin Votsmeier ,  Frank-Walter Schütze ,  Marcus Pfeifer ,  Egbert Lox ,  Thomas Kreuzer

发明人： Jürgen Gieshoff ,  Martin Votsmeier ,  Frank-Walter Schütze ,  Marcus Pfeifer ,  Egbert Lox ,  Thomas Kreuzer

IPC分类号： F01N3/00

CPC分类号： B01D53/9454 ,  F01N3/0222 ,  F01N3/023 ,  F01N3/035 ,  F01N3/0814 ,  F01N3/0835 ,  F01N3/20 ,  F01N2250/02 ,  F01N2370/24 ,  F01N2430/00 ,  F01N2430/06 ,  F01N2430/08 ,  F01N2430/085 ,  F02D41/0245 ,  F02D41/029 ,  Y02A50/2324 ,  Y02T10/22 ,  Y02T10/26

摘要： The present invention describes an exhaust-gas purification system for an internal combustion engine made of an oxidation catalyst arranged close to the engine, a subsequent hydrocarbon adsorber and a particulate filter arranged downstream thereof and provided with another oxidation catalyst. The oxidation catalyst ensures that emission limits with respect to carbon monoxide and hydrocarbons are satisfied in normal driving mode. During operating states with exhaust-gas temperatures below about 200° C., the oxidation catalyst can no longer oxidize carbon monoxide and hydrocarbons. Instead, the hydrocarbons are adsorbed by the hydrocarbon adsorber during these operating phases. In order to initiate the periodical regeneration of the particulate filter, the exhaustgas temperature of the internal combustion engine is raised by engine modifications. The increased exhaust-gas temperature leads to desorption of the previously stored hydrocarbons, which are then burned at the oxidation catalyst of the particulate filter, thereby supporting the regeneration of the particulate filter.

摘要翻译： 本发明描述了一种由靠近发动机设置的氧化催化剂制成的内燃机排气净化系统，后续的烃吸附器和布置在其下游并具有另一氧化催化剂的颗粒过滤器。 氧化催化剂确保在正常驾驶模式下满足一氧化碳和碳氢化合物的排放限制。 在废气温度低于约200℃的运行状态下，氧化催化剂不再能够氧化一氧化碳和碳氢化合物。 相反，烃在这些操作阶段被烃吸附器吸附。 为了开始颗粒过滤器的定期再生，通过发动机改造来提高内燃机的废气温度。 增加的废气温度导致先前储存的烃的解吸，然后在颗粒过滤器的氧化催化剂上燃烧，从而支持颗粒过滤器的再生。

公开(公告)号：US07906454B2

公开(公告)日：2011-03-15

申请号：US10588943

申请日：2005-01-18

申请人： Anke Wolf ,  Dieter Lindner ,  Matthias Feger ,  Martin Roesch ,  Egbert Lox ,  Thomas Kreuzer

发明人： Anke Wolf ,  Dieter Lindner ,  Matthias Feger ,  Martin Roesch ,  Egbert Lox ,  Thomas Kreuzer

IPC分类号： B01J23/00 ,  B01J21/00 ,  B01D50/00 ,  B01D53/34 ,  B21D39/00 ,  B32B3/12

CPC分类号： B01D53/945 ,  B01D2255/1023 ,  B01D2258/014 ,  B01J23/40 ,  B01J23/44 ,  B01J23/464 ,  B01J35/0006 ,  B01J37/0203 ,  B01J37/0207 ,  B01J37/024 ,  B01J37/0244 ,  F01N3/08 ,  F01N2510/06 ,  Y02T10/22 ,  Y10T428/1234

摘要： The present invention relates to an exhaust gas cleaning catalyst comprising on a honeycomb carrier a catalytic coating. Said honeycomb carrier has an upstream end and a downstream end and a plurality of flow channels are running from the upstream end to the downstream end. The catalytic coating comprises catalytically active precious metal components of which at least one component exhibits a concentration profile along the honeycomb carrier starting with a low concentration at the upstream end which increases along the flow channels up to a maximum value and then decreases again to the downstream end.

摘要翻译： 废气净化催化剂技术领域本发明涉及一种在蜂窝载体上含有催化涂层的排气净化催化剂。 所述蜂窝载体具有上游端和下游端，并且多个流动通道从上游端延伸到下游端。 催化涂层包含催化活性的贵金属组分，其中至少一种组分沿着蜂窝状载体呈现浓度分布，其起始于在上游端的低浓度，其沿流动通道增加至最大值，然后再次下降到下游 结束。

公开(公告)号：US07737081B2

公开(公告)日：2010-06-15

申请号：US10556548

申请日：2004-05-12

申请人： Martin Votsmeier ,  Frank Schütze ,  Stephan Malmberg ,  Jürgen Gieshoff ,  Egbert Lox ,  Thomas Kreuzer

发明人： Martin Votsmeier ,  Frank Schütze ,  Stephan Malmberg ,  Jürgen Gieshoff ,  Egbert Lox ,  Thomas Kreuzer

IPC分类号： B01J23/00 ,  B01J23/40 ,  B01J23/58 ,  B01J20/00 ,  B01J8/02 ,  F01N3/00 ,  F01N3/10

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。

公开(公告)号：US07563744B2

公开(公告)日：2009-07-21

申请号：US10486148

申请日：2002-08-08

申请人： Harald Klein ,  Ulrich Neuhausen ,  Egbert Lox ,  Jürgen Gieshoff ,  Thomas Kreuzer

发明人： Harald Klein ,  Ulrich Neuhausen ,  Egbert Lox ,  Jürgen Gieshoff ,  Thomas Kreuzer

IPC分类号： B01J23/00 ,  B01J21/00 ,  B01J29/00 ,  B01J20/00

CPC分类号： B01D53/944 ,  B01J21/08 ,  B01J23/40 ,  B01J23/42 ,  B01J29/126 ,  B01J29/44 ,  B01J35/0013 ,  B01J35/0026 ,  B01J35/006 ,  B01J35/023 ,  B01J35/04 ,  B01J35/1061 ,  B01J37/0045 ,  B01J37/0246 ,  B01J37/0248

摘要： The present invention relates to a catalyst for the purification of exhaust gases from an internal combustion engine, which comprises a catalytically active coating on an inert ceramic or metal honeycomb body, said coating comprising at least one platinum group metal selected from the group consisting of platinum, palladium, rhodium and iridium on a fine, oxidic support material. As an oxidic support material, the catalyst comprises a low-porosity material on the basis of silicon dioxide that comprises aggregates of essentially spherical primary particles having an average particle diameter of between 7 and 60 nm.

摘要翻译： 本发明涉及一种用于净化来自内燃机的废气的催化剂，其包括在惰性陶瓷或金属蜂窝体上的催化活性涂层，所述涂层包含至少一种铂族金属，其选自铂 ，钯，铑和铱在细的氧化载体材料上。 作为氧化性载体材料，催化剂包括基于二氧化硅的低孔隙率材料，其包含平均粒径为7至60nm的基本上为球形的初级颗粒的聚集体。

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。

公开(公告)号：US20070264518A1

公开(公告)日：2007-11-15

申请号：US10588943

申请日：2005-01-18

申请人： Anke Wolf ,  Dieter Lindner ,  Matthias Feger ,  Martin Roesch ,  Egbert Lox ,  Thomas Kreuzer

发明人： Anke Wolf ,  Dieter Lindner ,  Matthias Feger ,  Martin Roesch ,  Egbert Lox ,  Thomas Kreuzer

IPC分类号： B32B3/12

CPC分类号： B01D53/945 ,  B01D2255/1023 ,  B01D2258/014 ,  B01J23/40 ,  B01J23/44 ,  B01J23/464 ,  B01J35/0006 ,  B01J37/0203 ,  B01J37/0207 ,  B01J37/024 ,  B01J37/0244 ,  F01N3/08 ,  F01N2510/06 ,  Y02T10/22 ,  Y10T428/1234

摘要： The present invention relates to an exhaust gas cleaning catalyst comprising on a honeycomb carrier a catalytic coating. Said honeycomb carrier has an upstream end and a downstream end and a plurality of flow channels are running from the upstream end to the downstream end. The catalytic coating comprises catalytically active precious metal components of which at least one component exhibits a concentration profile along the honeycomb carrier starting with a low concentration at the upstream end which increases along the flow channels up to a maximum value and then decreases again to the downstream end.

摘要翻译： 废气净化催化剂技术领域本发明涉及一种在蜂窝载体上含有催化涂层的排气净化催化剂。 所述蜂窝载体具有上游端和下游端，并且多个流动通道从上游端延伸到下游端。 催化涂层包含催化活性的贵金属组分，其中至少一种组分沿着蜂窝状载体呈现浓度分布，其起始于在上游端的低浓度，其沿流动通道增加至最大值，然后再次下降到下游 结束。

公开(公告)号：US07238639B2

公开(公告)日：2007-07-03

申请号：US09931162

申请日：2001-08-17

申请人： Lothar Mussmann ,  Dieter Lindner ,  Martin Votsmeier ,  Egbert Lox ,  Thomas Kreuzer

发明人： Lothar Mussmann ,  Dieter Lindner ,  Martin Votsmeier ,  Egbert Lox ,  Thomas Kreuzer

IPC分类号： B01J23/00

CPC分类号： B01D53/945 ,  B01J23/10 ,  B01J35/1014 ,  B01J35/1019 ,  B01J37/03 ,  B01J37/18 ,  C01B13/02 ,  C01B13/0262 ,  C01B13/0281 ,  C01F17/0018 ,  C01P2002/52 ,  C01P2006/12 ,  Y02A50/2324 ,  Y02T10/22

摘要： An oxygen storage material based on cerium oxide with at least one other oxide of the metals silicon and zirconium, wherein the cerium oxide and the other oxides are present in the form of a mixed oxide. The material is obtainable in that hydroxidic precursors of the mixed oxide are first prepared in a manner known per se using a wet-chemical route, these precursors are optionally dried at temperatures between 80 and 300° C. and the dried precursors are then treated under a hydrogen-containing atmosphere at a temperature between 600 and 900° C. for a period of 1 to 10 hours. The reductive thermal treatment endows the material with a greatly improved dynamic behavior as compared with conventional calcination in air.

摘要翻译： 一种基于氧化铈与金属硅和锆的至少一种其它氧化物的储氧材料，其中氧化铈和其它氧化物以混合氧化物的形式存在。 该材料可以以混合氧化物的氢氧化物前体首先以本身已知的方式使用湿化学途径制备，这些前体任选地在80-300℃的温度下干燥，然后将干燥的前体在 在600-900℃的温度下加入含氢气氛1至10小时。 与空气中的常规煅烧相比，还原热处理赋予材料大大改善的动态特性。

公开(公告)号：US06713031B2

公开(公告)日：2004-03-30

申请号：US09851417

申请日：2001-05-09

申请人： Michael Harris ,  Jürgen Leyrer ,  Yvonne Demel ,  Egbert Lox ,  Thomas Kreuzer

发明人： Michael Harris ,  Jürgen Leyrer ,  Yvonne Demel ,  Egbert Lox ,  Thomas Kreuzer

IPC分类号： B01J800

CPC分类号： F01N3/2066 ,  B01D53/9431 ,  B01J21/063 ,  B01J21/066 ,  B01J23/20 ,  B01J23/30 ,  F01N3/2803 ,  F01N2240/40 ,  F01N2510/06 ,  F01N2610/02 ,  Y02A50/2325 ,  Y02T10/24

摘要： A structured catalyst for selective reduction of nitrogen oxides with ammonia using an ammonia-supplying compound. The catalyst is preferably used for exhaust gas treatment of diesel vehicles powered by diesel motors. The catalyst is characterized by the fact that it contains a reduction catalyst for selective reduction of nitrogen oxides with ammonia and a hydrolysis catalyst for the hydrolysis of urea, where the hydrolysis catalyst is applied in the form of a coating onto the reduction catalyst. By this arrangement of the two catalytic functions in one catalyst the exhaust gas system can be made very compactly and space saving. Moreover, advantageous synergistic effects result from the direct contact of the hydrolysis catalyst and the reduction catalyst.

摘要翻译： 使用氨供应化合物用氨选择性还原氮氧化物的结构化催化剂。 该催化剂优选用于由柴油发动机驱动的柴油车辆的废气处理。 催化剂的特征在于它含有用氨选择性还原氮氧化物的还原催化剂和用于水解尿素的水解催化剂，其中水解催化剂以涂层的形式施加到还原催化剂上。 通过在一个催化剂中这两种催化功能的排列，可以使废气系统非常紧凑和节省空间。 此外，由于水解催化剂和还原催化剂的直接接触，有利的协同效应。