公开(公告)号：US08341938B2

公开(公告)日：2013-01-01

申请号：US12815484

申请日：2010-06-15

申请人： Martin Votsmeier ,  Juliane Theis ,  Ulrich Goebel ,  Jürgen Gieshoff ,  Thomas Kreuzer

发明人： Martin Votsmeier ,  Juliane Theis ,  Ulrich Goebel ,  Jürgen Gieshoff ,  Thomas Kreuzer

IPC分类号： F01N3/00

CPC分类号： F01N11/005 ,  B01D53/9495 ,  F01N3/0871 ,  F01N3/0885 ,  F01N2430/06 ,  F01N2550/03 ,  Y02T10/20 ,  Y02T10/47

摘要： When a nitrogen oxide storage catalyst is being regenerated, the regeneration may be terminated for example as a result of a premature load change in the engine, which can lead to incomplete emptying of the storage catalyst. The residual filling level which remains in the catalyst following an incomplete regeneration of this nature is used as the starting value for calculation of the filling level during the next storage phase. After incomplete regeneration, the nitrogen oxide conversion rate is initially greater than would be expected, on account of the residual filling level. By taking this increased conversion rate into account when calculating the filling level during the storage phase, it is possible to further improve the accuracy of the calculation.

摘要翻译： 当再生氮氧化物储存催化剂时，例如由于发动机过早的负荷变化的结果，再生可能终止，这可导致储存催化剂的不完全排空。 在这种性质的不完全再生之后残留在催化剂中的残余填充量被用作在下一个储存阶段期间计算填充量的起始值。 在不完全再生之后，氮氧化物转化率最初大于预期的，因为残留的填充量。 通过在存储阶段计算填充水平时考虑到提高的转换率，可以进一步提高计算的准确性。

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：US20110172448A1

公开(公告)日：2011-07-14

申请号：US13000822

申请日：2009-06-24

申请人： Martin Votsmeier ,  Susanne Ungermann ,  Juergen Gieshoff ,  Thomas Kreuzer

发明人： Martin Votsmeier ,  Susanne Ungermann ,  Juergen Gieshoff ,  Thomas Kreuzer

IPC分类号： C07D303/04 ,  C07C45/27 ,  C07C45/34 ,  C07C45/00 ,  C07C51/00 ,  C07C17/00 ,  C07C29/00 ,  C07C15/02

CPC分类号： B01J19/2485

摘要： A cost effective process is presented for carrying out catalytic, in particular also exothermic, endothermic or autothermal reactions with optimum yield and selectivity. The system used is a wall-flow monolith which forces a flow from the inlet channel through the porous wall into the outlet channel by reciprocal closure of the gas channels. This is operated such that mass transfer and heat transport are determined virtually exclusively by convection, and diffusion-related thermal conduction phenomena can be neglected.

摘要翻译： 提出了一种经济有效的方法，用于进行催化，特别是放热，吸热或自热反应，具有最佳的产率和选择性。 所使用的系统是壁流式整料，其通过气体通道的相互关闭迫使来自入口通道的流动通过多孔壁进入出口通道。 这样操作使得传质和热传输几乎完全由对流确定，并且扩散相关的热传导现象可以被忽略。

公开(公告)号：US20100307136A1

公开(公告)日：2010-12-09

申请号：US12815484

申请日：2010-06-15

申请人： Martin VOTSMEIER ,  Juliane Kluge ,  Ulrich Goebel ,  Jürgen Gieshoff ,  Thomas Kreuzer

发明人： Martin VOTSMEIER ,  Juliane Kluge ,  Ulrich Goebel ,  Jürgen Gieshoff ,  Thomas Kreuzer

IPC分类号： F01N11/00

CPC分类号： F01N11/005 ,  B01D53/9495 ,  F01N3/0871 ,  F01N3/0885 ,  F01N2430/06 ,  F01N2550/03 ,  Y02T10/20 ,  Y02T10/47

摘要： When a nitrogen oxide storage catalyst is being regenerated, the regeneration may be terminated for example as a result of a premature load change in the engine, which can lead to incomplete emptying of the storage catalyst. The residual filling level which remains in the catalyst following an incomplete regeneration of this nature is used as the starting value for calculation of the filling level during the next storage phase. After incomplete regeneration, the nitrogen oxide conversion rate is initially greater than would be expected, on account of the residual filling level. By taking this increased conversion rate into account when calculating the filling level during the storage phase, it is possible to further improve the accuracy of the calculation.

摘要翻译： 当再生氮氧化物储存催化剂时，例如由于发动机过早的负荷变化的结果，再生可能终止，这可导致储存催化剂的不完全排空。 在这种性质的不完全再生之后残留在催化剂中的残余填充量被用作在下一个储存阶段期间计算填充量的起始值。 在不完全再生之后，氮氧化物转化率最初大于预期的，因为残留的填充量。 通过在存储阶段计算填充水平时考虑到提高的转换率，可以进一步提高计算的准确性。

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：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。

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。