专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明申请

US20110000189A1 DENOX OF DIESEL ENGINE EXHAUST GASES USING A TEMPERATURE-CONTROLLED PRECATALYST FOR PROVIDING NO2 IN ACCORDANCE WITH THE REQUIREMENTS 有权
标题翻译：使用温度控制的预处理器根据要求提供NO2的柴油发动机排气的脱硫
公开(公告)号：US20110000189A1
公开(公告)日：2011-01-06
申请号：US12808088
申请日：2008-12-12
申请人： Lothar Mussmann , Ingo Lappas , Andreas Geisselmann , Wilfried Mueller
发明人： Lothar Mussmann , Ingo Lappas , Andreas Geisselmann , Wilfried Mueller
IPC分类号： F01N3/00 , F01N3/10 , F01N11/00 , F01N3/035
CPC分类号： B01D53/9495 , B01D53/9418 , B01D53/9431 , B01D53/9477 , B01D2251/2062 , B01D2251/2067 , B01D2255/1021 , B01D2255/1023 , B01D2255/20738 , B01D2255/407 , B01D2255/50 , B01D2255/91 , B01D2257/404 , B01D2258/012 , F01N3/035 , F01N3/0814 , F01N3/0842 , F01N3/0885 , F01N3/2006 , F01N3/208 , F01N13/009 , F01N2240/02 , F01N2560/026 , F01N2560/06 , F01N2610/02 , Y02A50/2325 , Y02T10/24 , Y02T10/26
摘要： The adherence to future legally obligatory exhaust gas limit values for diesel vehicles in Europe, North America and Japan requires not only the removal of particles but also effective removal of nitrogen oxides from the exhaust gas (‘deNOx’). The ‘active SCR process’ is the preferred method for this. The nitrogen oxide conversions achieved by means of this process are particularly high when an optimal NO2/NOx ratio, preferably 0.5, is set upstream of the SCR catalyst. The invention proposes a process which solves the problem of supplying NO2 in accordance with requirements by means of temperature control of the precatalyst which is decoupled from the operating state of the engine. In an associated apparatus, a precatalyst (1) which contains at least one oxidation component and whose temperature can be controlled independently of the operating state of the engine and an active SCR stage comprising an SCR catalyst (3c) with upstream metering facility (3b) for a reducing agent from an external source (3a) are arranged in series. A particle filter (2) can be arranged between precatalyst and metering facility. The precatalyst preferably additionally contains a nitrogen oxide storage material.
摘要翻译：欧洲，北美和日本的柴油车辆遵守未来法定义务的废气限值不仅需要除去颗粒物，而且还要有效地从废气中除去氮氧化物（“脱硝”）。 “主动SCR过程”是其中的首选方法。当在SCR催化剂的上游设置最佳NO 2 / NO x比，优选0.5时，通过该方法实现的氮氧化物转化率特别高。本发明提出了一种解决根据需要通过与发动机的运行状态分离的预催化剂的温度控制来供应NO 2的问题的方法。在相关设备中，包含至少一种氧化组分并且可以独立于发动机的运行状态控制温度的预催化剂（1）和包括具有上游计量设备（3b）的SCR催化剂（3c）的主动SCR级，用于来自外部源（3a）的还原剂被串联布置。颗粒过滤器（2）可以布置在预催化剂和计量设备之间。预催化剂优选另外含有氮氧化物储存材料。

2. 发明授权

US07832201B2 Method for regeneration a nitrogen oxide storage catalyst 有权
标题翻译：再生氮氧化物储存催化剂的方法
公开(公告)号：US07832201B2
公开(公告)日：2010-11-16
申请号：US11722149
申请日：2005-12-24
申请人： Stephan Bremm , Christian Manfred Tomanik , Ulrich Goebel , Wilfried Mueller , Thomas Kreuzer
发明人： Stephan Bremm , Christian Manfred Tomanik , Ulrich Goebel , Wilfried Mueller , Thomas Kreuzer
IPC分类号： F01N3/00
CPC分类号： F02D41/0275 , B01D53/9495 , B01D53/96 , F01N3/0814 , F01N3/0885
摘要： To remove the nitrogen oxides from the exhaust gas from lean-burn engines, these engines are equipped with a nitrogen oxide storage catalyst, which has to be regenerated frequently by the engine being briefly switched to rich-burn mode. The regeneration is usually initiated when the nitrogen oxide concentration downstream of the catalyst rises above a permissible value. In this context, there is a risk of the bed temperature of the catalyst during and after regeneration being pushed into a range with incipient thermal desorption of the nitrogen oxides on account of the heat which is released during the conversion of the nitrogen oxides by the reducing constituents of the exhaust gas. This can lead to increased nitrogen oxide emission both during the regeneration itself and after the engine has been switched back to lean-burn mode. To eliminate this problem, it is proposed to divide the rich-burn mode into two rich pulses which follow one another in time, the first rich pulse being of shorter duration than the second rich pulse.
摘要翻译：为了从贫燃发动机的排气中除去氮氧化物，这些发动机配备有氮氧化物储存催化剂，其必须经过发动机的短时间切换为富燃烧模式而频繁地再生。当催化剂下游的氮氧化物浓度高于允许值时，通常开始再生。在这种情况下，存在在再生期间和之后将催化剂的床温度推到具有氮氧化物的初期热解吸的范围内的风险，这是由于在氮氧化物转化期间释放的热量通过还原排气成分。这可以导致在再生期间和发动机已经切换回稀燃模式之后氮氧化物排放增加。为了消除这个问题，提出将富燃烧模式分成时间上相互依赖的两个富脉冲，第一富脉冲的持续时间比第二富脉冲短。

3. 发明申请

US20090145112A1 Method for Regenerating Nitrogen Oxide Storage Catalysts 有权
标题翻译：再生氮氧化物储存催化剂的方法
公开(公告)号：US20090145112A1
公开(公告)日：2009-06-11
申请号：US11995765
申请日：2006-06-22
申请人： Ulrich Goebel , Stephan Bremm , Christian Manfred Tomanik , Wilfried Mueller , Thomas Kreuzer
发明人： Ulrich Goebel , Stephan Bremm , Christian Manfred Tomanik , Wilfried Mueller , Thomas Kreuzer
IPC分类号： F01N9/00
CPC分类号： B01D53/9495 , B01D53/9431 , B01D53/96 , F01N3/0807 , F01N3/22 , F01N3/32 , Y02T10/20
摘要： Nitrogen oxide storage catalytic converters for purifying the exhaust gas of lean-burn engines are periodically regenerated by switching the engine from lean-burn mode to rich-burn mode. After regeneration has taken place, the engine is switched back to lean-burn mode. At this time, rich exhaust gas is still flowing in the exhaust line from the engine to the catalytic converter, which rich exhaust gas is ejected via the catalytic converter into the environment by the following, lean exhaust gas. This leads to brief emissions peaks of the rich exhaust gas constituents and impairs the level of exhaust gas cleaning which can be obtained. In order to solve said problem, it is proposed to create oxidizing conditions by injecting air upstream of the storage catalytic converter, so that the rich exhaust gas constituents still flowing in the exhaust line upstream of the storage catalytic converter can be converted at the storage catalytic converter to form non-harmful products. The proposed method can lead to a considerable improvement in exhaust gas purification in particular in the case of catalytic converters which are already impaired in terms of their storage capacity through aging, and which must be regenerated significantly more frequently than fresh catalytic converters.
摘要翻译：通过将发动机从稀燃模式切换到富燃烧模式，周期性地再生用于净化贫燃发动机废气的氧化氮储存催化转化器。发生再生后，发动机转回稀燃模式。此时，排气管道中的废气仍然从发动机流向催化转化器，其中，废气通过下列稀释废气通过催化转化器排放到环境中。这导致了丰富的废气成分的短暂的排放峰值，并损害了可以获得的废气净化水平。为了解决上述问题，提出了通过在储存催化转化器的上游喷射空气来产生氧化条件，使得能够在储存催化转化器的上游排出的排气管中仍然流动的富排气成分在储存催化剂转换器形成无害产品。所提出的方法可以导致废气净化的显着改进，特别是在催化转化器的情况下，其通过老化而在储存容量方面已经受损，并且必须比新鲜催化转化器显着更频繁地再生。

4. 发明授权

US08475753B2 Exhaust-gas aftertreatment system with catalytically active wall-flow filter with storage function upstream of catalytic converter with identical storage function 有权
标题翻译：具有催化转化器上游储存功能的具有催化活性壁流过滤器的废气后处理系统具有相同的储存功能
公开(公告)号：US08475753B2
公开(公告)日：2013-07-02
申请号：US13392362
申请日：2010-08-20
申请人： Stephan Eckhoff , Wilfried Mueller , Joerg-Michael Richter , Stefan Franoschek , Martin Votsmeier
发明人： Stephan Eckhoff , Wilfried Mueller , Joerg-Michael Richter , Stefan Franoschek , Martin Votsmeier
IPC分类号： B01D53/94 , F01N3/10 , F01N3/28 , G05B1/00
CPC分类号： F01N3/0821 , F01N3/035 , F01N3/0814 , F01N3/0835 , F01N3/085 , F01N3/106 , F01N3/2066 , F01N13/009 , F01N13/0093 , F01N2250/02 , F01N2250/12 , F01N2250/14 , F01N2340/02 , F01N2510/068 , F01N2560/02 , F01N2900/1624 , Y02T10/24 , Y10T29/49345
摘要： The present invention relates to an exhaust-gas aftertreatment system which comprises a preferably catalytically active particle filter (wall-flow filter) which is followed in turn by a throughflow monolith (flow-through monolith) which is preferably provided with a catalytically active function. Both components have the same storage functions for gaseous substances present in the exhaust gas of internal combustion engines. The system is suitable in particular for the simultaneous removal of particles and pollutants from the exhaust gas of both predominantly lean-operated internal combustion engines and also of internal combustion engines operated predominantly with a stoichiometric air/fuel mixture. Likewise described is a process for the production and the use of such a system for exhaust-gas aftertreatment.
摘要翻译：废气后处理系统技术领域本发明涉及一种废气后处理系统，其包括优选催化活性的颗粒过滤器（壁流过滤器），其依次是通过优选具有催化活性功能的通流式整料（流通式整料）。两种组分对内燃机废气中存在的气态物质具有相同的储存功能。该系统特别适用于从主要是贫燃操作的内燃机的废气以及主要以化学计量的空气/燃料混合物运行的内燃机同时去除颗粒和污染物。同样描述了用于废气后处理的这种系统的生产和使用的方法。

5. 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。

6. 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。

7. 发明授权

US06364250B1 Shell component for an aircraft fuselage and method of manufacturing the same 有权
标题翻译：用于飞机机身的壳体组件及其制造方法
公开(公告)号：US06364250B1
公开(公告)日：2002-04-02
申请号：US09406463
申请日：1999-09-27
申请人： Peter Brinck , Wilfried Mueller , Klaus P. Sanmann , Joerg Spitzner
发明人： Peter Brinck , Wilfried Mueller , Klaus P. Sanmann , Joerg Spitzner
IPC分类号： B64C100
CPC分类号： B64C1/12
摘要： A shell component for an aircraft fuselage includes a fuselage skin panel, a plurality of stringers extending in an aircraft lengthwise direction, and a plurality of frames extending crosswise relative to the stringers. The stringers and the frames are respectively welded onto the skin panel with the addition of a weld filler material. Each frame includes a frame root portion and a frame profile portion connected to each other. The frame root portion has cut-out notches receiving the stringers passing therethrough. The frame root portion is welded to the skin panel at the areas between the cut-out notches, and may be welded to the respective stringer in each cut-out notch. The stringers and frames are fabricated from webs and flanges, whereby a premanufactured grid of flanges may be used. The result is a very strong, yet simple shell component structure, that may be manufactured with a simple welding process, at a low cost and with low effort.
摘要翻译：用于飞行器机身的壳体部件包括机身蒙皮板，在飞行器长度方向上延伸的多个纵梁以及相对于纵梁横向延伸的多个框架。桁条和框架分别通过添加焊接填充材料焊接到皮肤面板上。每个框架包括彼此连接的框架根部部分和框架轮廓部分。框架根部具有接收穿过其中的桁条的切口凹口。框架根部在切口凹口之间的区域处焊接到皮肤面板，并且可以在每个切口凹口中焊接到相应的纵梁。桁条和框架由网和法兰制成，由此可以使用预制的法兰格。结果是非常坚固但简单的壳部件结构，其可以以低成本和低功耗以简单的焊接工艺制造。

8. 发明授权

US08230674B2 Method for monitoring the nitrogen oxide storage capacity of a nitrogen oxide storage catalyst used in the form of a primary catalytic converter 有权
标题翻译：监测以一级催化转化器形式使用的氮氧化物储存催化剂的氮氧化物储存能力的方法
公开(公告)号：US08230674B2
公开(公告)日：2012-07-31
申请号：US11722135
申请日：2005-12-17
申请人： Stephan Bremm , Christian Manfred Tomanik , Ulrich Goebel , Wilfried Mueller , Thomas Kreuzer
发明人： Stephan Bremm , Christian Manfred Tomanik , Ulrich Goebel , Wilfried Mueller , Thomas Kreuzer
IPC分类号： F01N3/00
CPC分类号： F01N11/00 , F01N3/0814 , F01N3/0842 , F01N3/0864 , F01N13/009 , F01N13/0093 , F01N2550/03 , Y02T10/47
摘要： Modern exhaust-gas purification systems in motor vehicles with a lean-burn engine include a starting catalyst fitted close to the engine and a main catalyst arranged in the underbody region, with both the starting catalyst and the main catalyst being formed by nitrogen oxide storage catalysts. The nitrogen oxide storage catalysts are in each case regenerated by the engine being briefly switched from lean-burn mode to rich-burn mode when the nitrogen oxide concentration in the exhaust gas downstream of the storage catalysts rises above a predetermined value.The starting catalyst is exposed to particularly high temperatures and is therefore prone to faster ageing of its nitrogen oxide storage capacity than the main catalyst. To check the nitrogen oxide storage capacity of the starting catalyst, a regeneration which is due for the catalyst system is selected in such a way in terms of its duration and the extent to which the exhaust gas is enriched that substantially only the starting catalyst is regenerated, whereas the main catalyst is not. In this arrangement, the criterion for terminating this partial regeneration is the breakthrough of rich exhaust gas through the starting catalyst. After the engine has been switched back to lean-burn mode, the time which elapses until the concentration of nitrogen oxides in the exhaust gas downstream of the catalyst requires regeneration again is measured. The measured time is a measure of the remaining nitrogen oxide storage capacity of the starting catalyst.
摘要翻译：具有稀燃燃烧发动机的机动车辆中的现代废气净化系统包括安装在发动机附近的起动催化剂和布置在底体区域中的主催化剂，起始催化剂和主催化剂由氮氧化物储存催化剂形成。当存储催化剂下游的废气中的氮氧化物浓度升高到预定值以上时，氮氧化物储存催化剂在每种情况下都可通过发动机从稀燃模式短暂切换为富燃模式。起始催化剂暴露于特别高的温度，因此比主催化剂容易发生氮氧化物储存容量的老化。为了检查起始催化剂的氮氧化物存储容量，选择催化剂体系所致的再生，就其持续时间和废气浓缩程度而言，基本上只有起始催化剂被再生，而主催化剂不是。在这种布置中，终止这种部分再生的标准是通过起动催化剂的富排气的突破。在发动机已经切换回稀燃模式之后，测量在催化剂下游的废气中的氮氧化物浓度再次需要再次之前经过的时间。测量时间是起始催化剂的剩余氮氧化物储存容量的量度。

9. 发明申请

US20120148464A1 EXHAUST-GAS AFTERTREATMENT SYSTEM WITH CATALYTICALLY ACTIVE WALL-FLOW FILTER WITH STORAGE FUNCTION UPSTREAM OF CATALYTIC CONVERTER WITH IDENTICAL STORAGE FUNCTION 有权
标题翻译：具有储存功能的具有催化活性壁流过滤器的排气系统后处理系统具有标识存储功能的催化转换器
公开(公告)号：US20120148464A1
公开(公告)日：2012-06-14
申请号：US13392362
申请日：2010-08-20
申请人： Stephan Eckhoff , Wilfried Mueller , Joerg-Michael Richter , Stefan Franoschek , Martin Votsmeier
发明人： Stephan Eckhoff , Wilfried Mueller , Joerg-Michael Richter , Stefan Franoschek , Martin Votsmeier
IPC分类号： B01D53/94 , F01N3/035 , B23P15/00
CPC分类号： F01N3/0821 , F01N3/035 , F01N3/0814 , F01N3/0835 , F01N3/085 , F01N3/106 , F01N3/2066 , F01N13/009 , F01N13/0093 , F01N2250/02 , F01N2250/12 , F01N2250/14 , F01N2340/02 , F01N2510/068 , F01N2560/02 , F01N2900/1624 , Y02T10/24 , Y10T29/49345
摘要： The present invention relates to an exhaust-gas aftertreatment system which comprises a preferably catalytically active particle filter (wall-flow filter) which is followed in turn by a throughflow monolith (flow-through monolith) which is preferably provided with a catalytically active function. Both components have the same storage functions for gaseous substances present in the exhaust gas of internal combustion engines. The system is suitable in particular for the simultaneous removal of particles and pollutants from the exhaust gas of both predominantly lean-operated internal combustion engines and also of internal combustion engines operated predominantly with a stoichiometric air/fuel mixture. Likewise described is a process for the production and the use of such a system for exhaust-gas aftertreatment.
摘要翻译：废气后处理系统技术领域本发明涉及一种废气后处理系统，其包括优选催化活性的颗粒过滤器（壁流过滤器），其依次是通过优选具有催化活性功能的通流式整料（流通式整料）。两种组分对内燃机废气中存在的气态物质具有相同的储存功能。该系统特别适用于从主要是贫燃操作的内燃机的废气以及主要以化学计量的空气/燃料混合物运行的内燃机同时去除颗粒和污染物。同样描述了用于废气后处理的这种系统的生产和使用的方法。

10. 发明授权

US07905087B2 Method for regenerating nitrogen oxide storage catalysts 有权
标题翻译：氮氧化物储存催化剂再生方法
公开(公告)号：US07905087B2
公开(公告)日：2011-03-15
申请号：US11995765
申请日：2006-06-22
申请人： Ulrich Goebel , Stephan Bremm , Christian Manfred Tomanik , Wilfried Mueller , Thomas Kreuzer
发明人： Ulrich Goebel , Stephan Bremm , Christian Manfred Tomanik , Wilfried Mueller , Thomas Kreuzer
IPC分类号： F01N3/00
CPC分类号： B01D53/9495 , B01D53/9431 , B01D53/96 , F01N3/0807 , F01N3/22 , F01N3/32 , Y02T10/20
摘要： Nitrogen oxide storage catalytic converters for purifying the exhaust gas of lean-burn engines are periodically regenerated by switching the engine from lean-burn mode to rich-burn mode. After regeneration has taken place, the engine is switched back to lean-burn mode. At this time, rich exhaust gas is still flowing in the exhaust line from the engine to the catalytic converter, which rich exhaust gas is ejected via the catalytic converter into the environment by the following, lean exhaust gas. This leads to brief emissions peaks of the rich exhaust gas constituents and impairs the level of exhaust gas cleaning which can be obtained. In order to solve said problem, it is proposed to create oxidizing conditions by injecting air upstream of the storage catalytic converter, so that the rich exhaust gas constituents still flowing in the exhaust line upstream of the storage catalytic converter can be converted at the storage catalytic converter to form non-harmful products. The proposed method can lead to a considerable improvement in exhaust gas purification in particular in the case of catalytic converters which are already impaired in terms of their storage capacity through aging, and which must be regenerated significantly more frequently than fresh catalytic converters.
摘要翻译：通过将发动机从稀燃模式切换到富燃烧模式，周期性地再生用于净化贫燃发动机废气的氧化氮储存催化转化器。发生再生后，发动机切换回稀燃模式。此时，排气管道中的废气仍然从发动机流向催化转化器，其中，废气通过下列稀释废气通过催化转化器排放到环境中。这导致了丰富的废气成分的短暂的排放峰值，并损害了可以获得的废气净化水平。为了解决上述问题，提出了通过在储存催化转化器的上游喷射空气来产生氧化条件，使得能够在储存催化转化器的上游排出的排气管中仍然流动的富排气成分在储存催化剂转换器形成无害产品。所提出的方法可以导致废气净化的显着改进，特别是在催化转化器的情况下，其通过老化而在储存容量方面已经受损，并且必须比新鲜催化转化器显着更频繁地再生。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式