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1. 发明申请

US20100037597A1 EXHAUST EMISSION CONTROL SYSTEM FOR LEAN ENGINES AND METHOD FOR OPERATING THE SYSTEM 审中-公开
标题翻译：排气发动机排气控制系统及运行系统的方法
公开(公告)号：US20100037597A1
公开(公告)日：2010-02-18
申请号：US12519989
申请日：2007-12-21
申请人： Stephan Eckhoff , Ulrich Goebel , Susanne Philipp , Wilfried Mueller , Thomas Kreuzer
发明人： Stephan Eckhoff , Ulrich Goebel , Susanne Philipp , Wilfried Mueller , Thomas Kreuzer
IPC分类号： F01N9/00 , F01N3/023 , F01N3/10
CPC分类号： F01N3/0814 , F01N3/0842 , F01N3/0871 , F01N3/2073 , F01N13/009 , F01N13/0097 , F01N13/011 , F01N2570/18 , F01N2610/03 , F02D41/0082 , F02D41/0275 , Y02T10/24
摘要： An emission control system for the cleaning of the exhaust gases of a lean burn engine with two or more cylinders comprises a first exhaust leg for the exhaust gases of a first group of cylinders and a second exhaust leg for the exhaust gases of a second group of cylinders. A nitrogen oxide storage catalyst is arranged in each exhaust leg. The two exhaust legs are combined downstream of the storage catalysts at a confluence to form a common exhaust leg. The common exhaust leg contains an SCR catalyst. The first and second groups of cylinders are each supplied alternately in periodic intervals with lean and rich air/fuel mixtures. Lean or rich exhaust gases are thus obtained in the combustion in the cylinders and released into the corresponding exhaust legs. Lean and rich exhaust gases are adjusted with respect to one another so as to result in a lean exhaust gas after the combination of the exhaust gases in the common exhaust leg. The regeneration of the storage catalysts may result in the formation of ammonia, which is stored by the SCR catalyst and reacted with nitrogen oxides which pass through the storage catalysts in an unwanted manner during the storage phases.
摘要翻译：用于清洁具有两个或多个气缸的稀薄燃烧发动机的废气的排放控制系统包括用于第一组气缸的排气的第一排气支管和用于第二组气缸的废气的第二排气支管气瓶。在每个排气支管中设置氮氧化物储存催化剂。两个排气支路在汇合处在储存催化剂的下游组合以形成共同的排气支路。普通排气支架含有SCR催化剂。第一组和第二组汽缸分别以稀薄和浓缩的空气/燃料混合物以周期性间隔交替供应。因此，在气缸中的燃烧中获得精益或浓缩的废气，并将其排放到相应的排气支管中。精益和丰富的废气相对于彼此进行调节，以便在共同排气支路中排出的废气组合之后产生贫乏的废气。储存催化剂的再生可导致氨的形成，其由SCR催化剂储存并与在储存阶段期间以不期望的方式通过储存催化剂的氮氧化物反应。

2. 发明申请

US20100064665A1 METHOD AND DESULFURIZING NITROGEN OXIDE STORAGE CATALYSTS IN THE EXHAUST GAS SYSTEM OF A LEAN MIX ENGINE 审中-公开
标题翻译：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。

3. 发明授权

US08383544B2 Dual-stage method for the reactivation of thermally aged nitrogen oxide storage catalysts 有权
标题翻译：热老化氮氧化物储存催化剂再活化的双阶段方法
公开(公告)号：US08383544B2
公开(公告)日：2013-02-26
申请号：US12599411
申请日：2008-04-16
申请人： Stephan Eckhoff , Meike Wittrock , Ulrich Goebel , Ina Grisstede , Ruediger Hoyer , Wilfried Mueller , Thomas Kreuzer , Maria Cristina Casapu , Jan-Dierk Grunwaldt , Marek Maciejewski , Aflons Baiker
发明人： Stephan Eckhoff , Meike Wittrock , Ulrich Goebel , Ina Grisstede , Ruediger Hoyer , Wilfried Mueller , Thomas Kreuzer , Maria Cristina Casapu , Jan-Dierk Grunwaldt , Marek Maciejewski , Aflons Baiker
IPC分类号： B01J23/58
CPC分类号： B01J35/002 , B01D53/9422 , B01D53/96 , B01D2255/2042 , B01D2255/2065 , B01J23/002 , B01J23/63 , B01J23/96 , B01J38/04 , B01J38/06 , B01J38/08 , B01J2523/00 , B01J2523/25 , B01J2523/3712 , B01J2523/828
摘要： Nitrogen oxide storage catalysts are used to remove the nitrogen oxides present in the lean exhaust gas of lean-burn engines. As a result of the stress due to high temperatures in vehicle operation, they are subject to thermal aging processes which affect both the nitrogen oxide storage components and the noble metals present as catalytically active components. The present invention provides a process with which the catalytic activity of a nitrogen oxide storage catalyst which comprises, in addition to platinum as a catalytically active component, basic compounds of strontium and/or barium on a support material comprising cerium oxide, said catalytic activity being lost owing to the thermal aging process, can be at least partly restored. The two-stage process is based on the fact that strontium and/or barium compounds formed during the thermal aging with the support material, which also comprise platinum, are recycled to the catalytically active forms by controlled treatment with specific gas mixtures.
摘要翻译：氮氧化物储存催化剂用于去除贫燃发动机的贫废气中存在的氮氧化物。由于车辆操作中的高温引起的应力的结果，它们受到影响作为催化活性组分存在的氮氧化物存储组分和贵金属两者的热老化过程。本发明提供了一种氮氧化物储存催化剂的催化活性的方法，除了铂作为催化活性组分之外，还包括锶和/或钡的碱性化合物在包含氧化铈的载体材料上，所述催化活性为由于热老化过程而损失，可以至少部分恢复。两阶段工艺是基于以下事实：在热老化期间形成的锶和/或钡化合物与支撑材料（其也包含铂）通过用特定气体混合物的控制处理再循环至催化活性形式。

4. 发明申请

US20110258982A1 METHOD FOR THE ON-BOARD REACTIVATION OF THERMALLY AGED NITROGEN OXIDE STORAGE CATALYSTS IN MOTOR VEHICLES HAVING AN INTERNAL COMBUSTION ENGINE OPERATED PREDOMINANTLY UNDER LEAN CONDITIONS 审中-公开
标题翻译：在具有内部燃烧发动机的电动车辆中，根据LEAN条件预先运行的热老化的氮氧化物储存催化剂的板反应方法
公开(公告)号：US20110258982A1
公开(公告)日：2011-10-27
申请号：US12304843
申请日：2007-06-05
申请人： Stephan Eckhoff , Meike Wittrock , Ulrich Goebel , Wilfried Mueller , Thomas Kreuzer
发明人： Stephan Eckhoff , Meike Wittrock , Ulrich Goebel , Wilfried Mueller , Thomas Kreuzer
IPC分类号： F01N3/18
CPC分类号： F01N3/0885 , F01N3/0814 , F01N3/0842 , F01N3/101 , F01N3/103 , F01N13/009 , F01N13/011 , F01N13/107 , F01N2250/12 , F01N2260/04 , F01N2330/06 , F01N2430/06 , Y02A50/2324 , Y02T10/22
摘要： Nitrogen oxide storage catalysts are used to remove the nitrogen oxides present in the lean exhaust gas of lean-burn engines. Storage catalysts are thermally aged by high temperatures. Ageing is due to sintering of the catalytically active noble metal components of the catalyst and to formation of compounds of the storage components with the support materials. According to the invention, the formation of compounds of the storage materials can be largely reversed by treatment of the storage material with a gas mixture containing carbon dioxide, optionally water vapor and optionally nitrogen oxides at temperatures in the range from 200° C. to 950° C., preferably from 300° C. to 700° C. The reactivation can be carried out under emission-neutral conditions directly in the vehicle during driving operation by setting of suitable exhaust gas conditions and regulating the air/fuel ratio.
摘要翻译：氮氧化物储存催化剂用于去除贫燃发动机的贫废气中存在的氮氧化物。储存催化剂通过高温热老化。老化是由于催化剂的催化活性贵金属组分的烧结以及用载体材料形成储存组分的化合物。根据本发明，存储材料的化合物的形成可以通过用包含二氧化碳，任选的水蒸汽和任选的氮氧化物的气体混合物在200℃至950℃的温度范围内处理储存材料而大大逆转 ℃，优选为300℃至700℃。通过设定合适的废气条件并调节空气/燃料比，可以在驾驶操作期间直接在车辆的发射 - 中性条件下进行再活化。

5. 发明申请

US20100101210A1 Method for Regenerating Soot Filters in the Exhaust Gas System of a Lean Mix Engine, and Exhaust Gas System Therefor 有权
标题翻译：在精益混合发动机的排气系统中再生烟尘过滤器的方法及其排气系统
公开(公告)号：US20100101210A1
公开(公告)日：2010-04-29
申请号：US12525190
申请日：2008-01-31
申请人： Stephan Eckhoff , Ina Grisstede , Wilfried Mueller , Thomas Kreuzer
发明人： Stephan Eckhoff , Ina Grisstede , Wilfried Mueller , Thomas Kreuzer
IPC分类号： F01N3/023 , F01N3/10
CPC分类号： F01N3/2066 , F01N3/0253 , F01N3/033 , F01N3/035 , F01N3/0821 , F01N3/0842 , F01N3/0885 , F01N3/103 , F01N3/106 , F01N9/002 , F01N13/009 , F01N13/0093 , F01N13/011 , F01N13/107 , F01N2250/02 , F01N2510/065 , F01N2610/02 , F01N2610/03 , F02B75/22 , F02D41/0245 , F02D41/029 , F02D41/405 , Y02A50/2325 , Y02A50/2345 , Y02T10/24 , Y02T10/26 , Y02T10/47
摘要： To adhere to legal exhaust-gas regulations, the exhaust gases of a lean-burn engine must be freed from soot particles and nitrogen oxides. It is proposed that the cylinders of the lean-burn engine be divided into two groups which discharge their exhaust gases into two associated exhaust lines which each comprise a soot filter and which are merged at an opening-in point into a common exhaust line. The common exhaust line comprises the catalytic converter for the removal of the nitrogen oxides. By regenerating the two soot filters at different times, the exhaust-gas temperature in the common exhaust line is limited to a mean temperature between the exhaust-gas temperature of normal operation and that of regeneration operation, and the catalytic converter for the removal of the nitrogen oxides is preserved.
摘要翻译：为遵守合法的废气法规，稀燃发动机的废气必须不含烟灰颗粒和氮氧化物。建议将稀燃发动机的气缸分成两组，将其废气排放到两个相关联的排气管道中，每个排气管路包括烟尘过滤器，并在开口处合并成共同的排气管线。普通排气管路包括用于除去氮氧化物的催化转化器。通过在不同时间再生两个烟灰过滤器，共同排气管线中的废气温度被限制在正常操作的废气温度和再生操作的排气温度之间的平均温度，以及用于除去氮氧化物被保存。

6. 发明授权

US08327625B2 Method for regenerating soot filters in the exhaust gas system of a lean mix engine, and exhaust gas system therefor 有权
标题翻译：在稀混合发动机的废气系统中再生烟灰过滤器的方法及其废气系统
公开(公告)号：US08327625B2
公开(公告)日：2012-12-11
申请号：US12525190
申请日：2008-01-31
申请人： Stephan Eckhoff , Ina Grisstede , Wilfried Mueller , Thomas Kreuzer
发明人： Stephan Eckhoff , Ina Grisstede , Wilfried Mueller , Thomas Kreuzer
IPC分类号： F01N3/023 , F01N3/10
CPC分类号： F01N3/2066 , F01N3/0253 , F01N3/033 , F01N3/035 , F01N3/0821 , F01N3/0842 , F01N3/0885 , F01N3/103 , F01N3/106 , F01N9/002 , F01N13/009 , F01N13/0093 , F01N13/011 , F01N13/107 , F01N2250/02 , F01N2510/065 , F01N2610/02 , F01N2610/03 , F02B75/22 , F02D41/0245 , F02D41/029 , F02D41/405 , Y02A50/2325 , Y02A50/2345 , Y02T10/24 , Y02T10/26 , Y02T10/47
摘要： To adhere to legal exhaust-gas regulations, the exhaust gases of a lean-burn engine must be freed from soot particles and nitrogen oxides. It is proposed that the cylinders of the lean-burn engine be divided into two groups which discharge their exhaust gases into two associated exhaust lines which each comprise a soot filter and which are merged at an opening-in point into a common exhaust line. The common exhaust line comprises the catalytic converter for the removal of the nitrogen oxides. By regenerating the two soot filters at different times, the exhaust-gas temperature in the common exhaust line is limited to a mean temperature between the exhaust-gas temperature of normal operation and that of regeneration operation, and the catalytic converter for the removal of the nitrogen oxides is preserved.
摘要翻译：为遵守合法的废气法规，稀燃发动机的废气必须不含烟灰颗粒和氮氧化物。建议将稀燃发动机的气缸分成两组，将其废气排放到两个相关联的排气管道中，每个排气管路包括烟尘过滤器，并在开口处合并成共同的排气管线。普通排气管路包括用于除去氮氧化物的催化转化器。通过在不同时间再生两个烟灰过滤器，共同排气管线中的废气温度被限制在正常操作的废气温度和再生操作的排气温度之间的平均温度，以及用于除去氮氧化物被保存。

7. 发明申请

US20100055012A1 NITROGEN OXIDE STORAGE CATALYST FEATURING A REDUCED DESULFURIZATION TEMPERATURE 审中-公开
公开(公告)号：US20100055012A1
公开(公告)日：2010-03-04
申请号：US12444304
申请日：2007-08-30
申请人： Ina Grisstede , Friedemann Rohr , Stephan Eckhoff , Wilfried Mueller , Thomas Kreuzer
发明人： Ina Grisstede , Friedemann Rohr , Stephan Eckhoff , Wilfried Mueller , Thomas Kreuzer
IPC分类号： B01D53/94 , B01J23/42 , B01J23/10 , B01J21/06 , B01J27/232
CPC分类号： B01D53/9422 , B01D2255/1021 , B01D2255/2063 , B01D2255/407 , B01D2255/9155 , B01J23/005 , B01J23/58 , B01J23/63 , B01J37/0248
摘要： Nitrogen oxide storage catalysts are used to remove nitrogen oxides from the exhaust gas of internal combustion engines operated predominantly under lean burn conditions. When these catalysts are used in diesel vehicles, the increased sulfur content in the fuel during operation results in poisoning of the catalyst, which is reversible at high temperatures under reduced exhaust gas conditions. In the case of conventional nitrogen oxide storage catalysts, temperatures of more than 600° C. have to be obtained for desulfurization. This is not always possible in diesel vehicles with a nitrogen oxide storage catalyst in the underbody area.The invention presents a process whose application allows the desulfurization temperature of conventional nitrogen oxide storage catalysts which comprise a platinum component and at least one nitrogen oxide storage material to be lowered. The basicity of the chemical environment of the platinum is lowered, while the nitrogen oxide storage material can remain unchanged as such. In addition, an improved nitrogen oxide storage catalyst with reduced desulfurization temperature which results from the application of the process is presented. Such catalysts are suitable particularly for nitrogen oxide aftertreatment of the exhaust gases of diesel engines.

8. 发明授权

US6077489A Oxidation catalyst for internal combustion engines 失效
标题翻译：内燃机氧化催化剂
公开(公告)号：US6077489A
公开(公告)日：2000-06-20
申请号：US212474
申请日：1998-12-16
申请人： Harald Klein , Hans Van Den Tillaart , Egbert Lox , Thomas Kreuzer , Stephan Eckhoff
发明人： Harald Klein , Hans Van Den Tillaart , Egbert Lox , Thomas Kreuzer , Stephan Eckhoff
IPC分类号： B01D53/94 , B01J23/62 , B01J21/12 , B01J23/14 , B01J23/42
CPC分类号： B01D53/945 , B01J23/626 , Y02T10/22 , Y10S502/50
摘要： An oxidation catalyst for internal combustion engines which contains platinum on a finely divided support material and containing lead as a promoter. The catalytic activity of the oxidation catalyst can be increased greatly by promoting the catalyst with lead at a molar ratio of lead to platinum of 2:1. The light-off temperatures of the promoted catalyst are well below the corresponding temperatures for a conventional, lead-free catalyst.
摘要翻译：一种用于内燃机的氧化催化剂，其在精细分散的载体材料上含有铂并含有铅作为助催化剂。氧化催化剂的催化活性可以通过用铅以2:1的铅与铂的摩尔比促进催化剂而大大提高。促进催化剂的关闭温度远远低于常规无铅催化剂的相应温度。

9. 发明授权

US6001318A Process for lowering nitrogen oxide levels in combustion engine exhaust gas 失效
标题翻译：降低内燃机废气中氮氧化物含量的方法
公开(公告)号：US6001318A
公开(公告)日：1999-12-14
申请号：US996215
申请日：1997-12-22
申请人： Hans Van Den Tillaart , Jurgen Leyrer , Egbert Lox , Thomas Kreuzer , Stephan Eckhoff
发明人： Hans Van Den Tillaart , Jurgen Leyrer , Egbert Lox , Thomas Kreuzer , Stephan Eckhoff
IPC分类号： F01N3/22 , B01D53/86 , B01D53/94 , F01N3/20 , F01N3/24 , F01N3/28 , B01D47/00 , B01J8/00 , F01N3/00 , F01N3/10
CPC分类号： B01D53/9409 , B01D53/9495 , F01N2610/03
摘要： A process is disclosed for lowering nitrogen oxide levels in combustion engine exhaust gas by a reduction catalyst and by controlling the exhaust gas temperature upstream from the catalyst to a constant value, at which the catalyst exhibits maximum conversion for nitrogen oxides. It is possible to maintain maximum conversion over a wide range of engine outlet temperatures of the exhaust gas.
摘要翻译：公开了一种通过还原催化剂降低内燃机废气中的氮氧化物含量并通过将催化剂上游的废气温度控制在恒定值的方法，在该值下催化剂表现出氮氧化物的最大转化率。可以在废气的发动机出口温度范围内保持最大转换。

10. 发明申请

US20080314030A1 Method for Operating a Nitrogen Oxide Storage Catalytic Converter in a Motor Vechicle with Consideration of Regional Fuel Qualities 审中-公开
标题翻译：在考虑区域燃料质量的汽车机器中操作氮氧化物储存催化转化器的方法
公开(公告)号：US20080314030A1
公开(公告)日：2008-12-25
申请号：US12158099
申请日：2006-11-22
申请人： Wilfried Mueller , Thomas Kreuzer , Ulrich Goebel , Friedemann Rohr
发明人： Wilfried Mueller , Thomas Kreuzer , Ulrich Goebel , Friedemann Rohr
IPC分类号： F01N9/00
CPC分类号： F02D41/0275 , F01N3/0814 , F01N3/0842 , F01N3/0885 , F01N9/00 , F01N11/00 , F02D41/0025 , F02D41/3076 , F02D2200/701 , Y02T10/47
摘要： The fuel qualities for vehicles differ, for example, in Europe on a regional basis. This applies in particular to the sulphur content of the fuel. If vehicles with modern lean engines or with diesel engines which are equipped with nitrogen oxide storage-type catalytic converters in order to reduce the nitrogen oxide content in their exhaust gas pass through regions with a sulphur content in the fuel which is above the sulphur content which is specified for the vehicle, the engine controller will correspondingly frequently initiate desulphurization of the storage-type catalytic converter after the vehicle has been refuelled with this fuel. Any desulphurization entails an increased level of fuel consumption and greater ageing of the catalytic converter. It is proposed to avoid these adverse effects in that in lean motors the engine controller switches to stoichiometric operation in such a case, and in a diesel engine said engine controller prevents the desulphurization. The information about the region in which the vehicle is moving at a particular time can be transmitted to the engine controller by a navigation system.
摘要翻译：车辆的燃料质量在欧洲区域不同。这尤其适用于燃料的硫含量。如果配备有氮氧化物存储型催化转化器以减少其废气中的氮氧化物含量的现代精益发动机或柴油发动机的车辆通过燃料中硫含量高于硫含量的区域为车辆指定，发动机控制器将相应地频繁地启动储存型催化转化器在车辆加油之后的脱硫。任何脱硫都需要增加燃料消耗水平和催化转化器的老化。建议避免在这种情况下，在稀薄电动机中，发动机控制器切换到化学计量操作的这些不利影响，并且在柴油发动机中，所述发动机控制器防止脱硫。关于车辆在特定时间移动的区域的信息可以由导航系统发送到发动机控制器。

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