Method and apparatus for temperature management in an exhaust gas posttreatment system
    1.
    发明授权
    Method and apparatus for temperature management in an exhaust gas posttreatment system 失效
    废气后处理系统中温度管理的方法和装置

    公开(公告)号:US07950223B2

    公开(公告)日:2011-05-31

    申请号:US12084961

    申请日:2006-11-13

    IPC分类号: F01N3/00

    摘要: A method of and apparatus for controlling the reducing agent in an exhaust gas aftertreatment system of an internal combustion engine with an exhaust gas duct in which an SCR catalyst is provided in the direction of flow of the exhaust gas. A reducing agent-generating system (RGS) comprising an NOx and CO/H2 production unit as well as a combined NOx storage/ammonia production unit in the standard gas path of the reducing agent-generating system. Ammonia is delivered upstream from the SCR catalyst to reduce nitrogen oxides, starting materials for producing the ammonia being fed at least in part to the NOx and CO/H2 production unit via a fuel inlet and an air inlet. An AGC matrix of the combined NOx storage/ammonia production unit is cooled at least intermittently by means of an inner and/or outer cooling device. Cooling results in the longest possible section of the running length (L) and thus the largest possible volume percent of the AGX matrix within the combined NOx storage/ammonia production unit having an optimum temperature range regarding the highest possible ammonia yield, which overall contributes to a great ammonia production rate.

    摘要翻译: 一种在具有废气管道的内燃机的废气后处理系统中控制还原剂的方法和装置,其中在废气流动方向上设置有SCR催化剂。 一种还原剂生成系统(RGS),其包括NOx和CO / H 2生产单元,以及在还原剂产生系统的标准气体路径中的组合的NOx储存/氨生产单元。 氨在SCR催化剂的上游被输送以还原氮氧化物,用于产生氨的起始材料至少部分地通过燃料入口和空气入口供给至NOx和CO / H 2生产单元。 组合的NOx储存/氨生产单元的AGC矩阵通过内部和/或外部冷却装置至少间歇地冷却。 冷却导致运行长度(L)的最长可能部分,因此在组合的NOx储存/氨生产单元内的AGX基质的最大体积百分比具有关于最高可能的氨产量的最佳温度范围,其总体上有助于 氨生产率很高。

    Method and Apparatus for Temperature Management in an Exhaust Gas Posttreatment System
    2.
    发明申请
    Method and Apparatus for Temperature Management in an Exhaust Gas Posttreatment System 失效
    排气后处理系统温度管理方法与装置

    公开(公告)号:US20090211230A1

    公开(公告)日:2009-08-27

    申请号:US12084961

    申请日:2006-11-13

    IPC分类号: F01N3/20

    摘要: A method of and apparatus for controlling the reducing agent in an exhaust gas aftertreatment system of an internal combustion engine with an exhaust gas duct in which an SCR catalyst is provided in the direction of flow of the exhaust gas. A reducing agent-generating system (RGS) comprising an NOx and CO/H2 production unit as well as a combined NOx storage/ammonia production unit in the standard gas path of the reducing agent-generating system. Ammonia is delivered upstream from the SCR catalyst to reduce nitrogen oxides, starting materials for producing the ammonia being fed at least in part to the NOx and CO/H2 production unit via a fuel inlet and an air inlet. An AGC matrix of the combined NOx storage/ammonia production unit is cooled at least intermittently by means of an inner and/or outer cooling device. Cooling results in the longest possible section of the running length (L) and thus the largest possible volume percent of the AGX matrix within the combined NOx storage/ammonia production unit having an optimum temperature range regarding the highest possible ammonia yield, which overall contributes to a great ammonia production rate.

    摘要翻译: 一种在具有废气管道的内燃机的废气后处理系统中控制还原剂的方法和装置,其中在废气流动方向上设置有SCR催化剂。 一种还原剂生成系统(RGS),其包括NOx和CO / H 2生产单元,以及在还原剂产生系统的标准气体路径中的组合的NOx储存/氨生产单元。 氨在SCR催化剂的上游被输送以还原氮氧化物,用于产生氨的起始材料至少部分地通过燃料入口和空气入口供给至NOx和CO / H 2生产单元。 组合的NOx储存/氨生产单元的AGC矩阵通过内部和/或外部冷却装置至少间歇地冷却。 冷却导致运行长度(L)的最长可能部分,因此在组合的NOx储存/氨生产单元内的AGX基质的最大体积百分比具有关于最高可能的氨产率的最佳温度范围,其总体上有助于 氨生产率很高。

    Catalytic converter assembly in an exhaust gas posttreatment system
    3.
    发明授权
    Catalytic converter assembly in an exhaust gas posttreatment system 失效
    催化转化器组件在废气后处理系统中

    公开(公告)号:US08318103B2

    公开(公告)日:2012-11-27

    申请号:US12084950

    申请日:2006-11-13

    IPC分类号: B01D53/90 B01D53/94 C01C1/04

    摘要: The invention relates to a catalyst arrangement in an exhaust gas after-treatment system of an internal combustion engine comprising an exhaust gas line in which an SCR catalyst is positioned in the direction of flow of the exhaust gas. A reducing agent production system has an NOx and CO/H2 production unit and a combined NOx storage/ammonia production unit in the standard gas-carrying path of the reducing agent production system which supplies ammonia as the reducing agent. The NOx and CO/H2 production unit is at least temporarily supplied via a fuel supply and an air supply with starting products for producing ammonia. The combined NOx storage/ammonia production unit has a plurality catalyst sections having different characteristic properties or functionalities, enabling a higher ammonia yield in the combined NOx storage/ammonia production unit. The catalyst formulations make it possible to adjust a temperature profile that additionally influences the ammonia production rate and contributes to higher ammonia yields.

    摘要翻译: 本发明涉及一种内燃机废气后处理系统中的催化剂装置,其包括其中SCR催化剂沿废气流动方向定位的排气管线。 还原剂生产系统在还原剂生产系统的标准气体输送路径中具有供应氨作为还原剂的NOx和CO / H 2生产单元和组合的NOx储存/氨生产单元。 NO x和CO / H 2生产单元至少通过燃料供应和空气供应临时供应,生产用于生产氨的起始产品。 组合的NOx储存/氨生产单元具有多个具有不同特性或功能的催化剂部分,能够在组合的NOx储存/氨生产单元中产生更高的氨产率。 催化剂配方使得可以调节另外影响氨产生速率的温度分布,并有助于提高氨的产率。

    PROCEDURE AND DEVICE FOR CONTROLLING AN EXHAUST GAS PURIFICATION SYSTEM
    4.
    发明申请
    PROCEDURE AND DEVICE FOR CONTROLLING AN EXHAUST GAS PURIFICATION SYSTEM 有权
    用于控制排气净化系统的程序和装置

    公开(公告)号:US20110099981A1

    公开(公告)日:2011-05-05

    申请号:US12940395

    申请日:2010-11-05

    IPC分类号: F01N3/18

    摘要: A procedure for controlling an exhaust gas purification system of a combustion engine, consisting of one or several catalytic converters for converting and/or storing at least one exhaust gas component of an exhaust gas of the combustion engine at least one of the catalytic converters is construed as oxidization catalytic converter. With the aid of the adsorption capability of at least partially uncombusted hydrocarbons of one of the catalytic converters a diagnosing forecast about the NO oxidization of the catalytic converters is derived, whereby the at least partially uncombusted hydrocarbons are introduced into the exhaust gas duct at least partially in front of the catalytic converter. With the procedure and the device for implementing the procedure the NO oxidization capability of the involved catalytic converters can be evaluated in the range of extended on-board diagnosis requirements to provide “feed-gas” for subsequent exhaust gas after-treatment systems.

    摘要翻译: 用于控制内燃机的排气净化系统的过程被解释为由一个或多个催化转化器组成,用于转化和/或存储至少一个催化转化器的内燃机的废气的至少一个排气组分 作为氧化催化转化器。 借助于催化转化器之一的至少部分未燃烧的碳氢化合物的吸附能力,得出催化转化器的NO氧化的诊断预测,由此至少部分未燃烧的烃至少部分地被引入废气管道 在催化转化器前面。 通过实施该程序的方法和装置,可以在延长的车载诊断要求的范围内评估所涉及的催化转化器的NO氧化能力,为后续废气后处理系统提供“进料气”。

    Procedure for controlling the reducing agent in an exhaust gas post-processing system
    5.
    发明申请
    Procedure for controlling the reducing agent in an exhaust gas post-processing system 失效
    在排气后处理系统中控制还原剂的方法

    公开(公告)号:US20070144150A1

    公开(公告)日:2007-06-28

    申请号:US11599898

    申请日:2006-11-14

    IPC分类号: F01N3/00 F01N3/10

    摘要: The invention relates to a procedure for controlling the reducing agent in an exhaust gas post-processing system of a combustion machine with an exhaust gas duct, in which an SCR catalytic converter is provided in the direction of flow of the exhaust, wherein a reducing agent generation system has an NOx and CO/H2 generation unit,, an oxidation catalytic converter and a combined NOx storage / ammonia generation unit in the standard gas route of the reducing agent generation system, and, in order to reduce nitrogen oxide, ammonia is added as a reducing agent in front of the SCR catalytic converter by the reducing agent generation system, wherein source materials for the generation of ammonia are at least intermittently added to the NOx and CO/H2 generation unit via a fuel supply line and via an air supply line, wherein during the fat phase the air/fuel composition is changed in front of the oxidation catalytic converter in the form of a lambda modulation for a lambda value. It can thus be achieved that, in pulse mode, a high H2/CO yield can be achieved with a simultaneously low HC slip and the higher HC penetrations associated with the natural aging of the catalytic converter and the decreasing H2/CO yields are compensated. Influences resulting from the reactor geometry of the oxidation catalytic converter can be influences or compensated with the procedure in terms of its drive-away characteristic.

    摘要翻译: 本发明涉及一种用于控制具有废气管道的燃烧机的废气后处理系统中的还原剂的方法,其中SCR催化转化器沿排气方向设置,其中还原剂 发电系统具有NO x SO 2 CO 2 H 2生成单元,氧化催化转化器和组合NO x SO 2储存/氨生成单元 在还原剂生成系统的标准气体路径中,为了还原氮氧化物,通过还原剂生成系统在SCR催化转化器前添加氨作为还原剂,其中用于产生氨的源材料 至少经由燃料供应管线经由空气供应管线间歇地添加到NO / CO 2 H 2 CO 2 H 2 CO 2 H 2 CO 2 H 2 CO 2 H 2代单元中,其中在脂肪相期间空气/ 燃料组成在氧化催化转化器前面形式变化 的λ值的λ调制。 因此,可以实现在脉冲模式下,可以同时具有低HC滑移和与催化转化器的自然老化相关联的较高的HC渗透率实现高H 2 / CO / CO收率 减少H 2 / CO产率被补偿。 由氧化催化转化器的反应器几何结构产生的影响可以根据其驱走特性的程序来影响或补偿。

    Process for reducing agent control in an exhaust gas aftertreatment system
    6.
    发明授权
    Process for reducing agent control in an exhaust gas aftertreatment system 失效
    废气后处理系统中还原剂控制的方法

    公开(公告)号:US07731925B2

    公开(公告)日:2010-06-08

    申请号:US11599899

    申请日:2006-11-14

    申请人: Markus Gloeckle

    发明人: Markus Gloeckle

    IPC分类号: B01D53/56 B01D53/94

    摘要: Methods of reducing agent control in an exhaust gas aftertreatment system of a combustion engine with an exhaust gas pipe in which in the direction of flow of the exhaust gas there is an SCR catalyzer. A reducing agent generating system has an NOx and CO/H2 generating unit, an oxidation catalyzer, and a combined NOx storage/ammonia generating unit in the standard gas path of the reducing agent generating system. Ammonia is introduced as a reducing agent for the reduction of nitric oxides before the SCR catalyzer of the reducing agent generating system. Precursor materials for generation of ammonia are directed at least temporarily to the NOx and CO/H2 generating unit through a fuel feed and an air feed. A CO/H2 reducing agent stream is temporally modulated during a rich phase. A CO/H2 concentration is primarily held constant at a high level.

    摘要翻译: 具有废气管的内燃机的排气后处理系统中的排气的流动方向为SCR催化剂的方法。 还原剂发生系统在还原剂生成系统的标准气体路径中具有NOx和CO / H 2发生单元,氧化催化剂和组合的NOx储存/氨生成单元。 在还原剂生成系统的SCR催化剂之前,引入氨作为还原剂以还原一氧化氮。 用于产生氨的前体材料至少通过燃料进料和空气进料暂时引导到NOx和CO / H 2发生单元。 CO / H2还原剂流在富相期间进行时间调制。 CO / H2浓度主要保持在高水平。

    Procedure for controlling the reducing agent in an exhaust gas post-processing system
    7.
    发明授权
    Procedure for controlling the reducing agent in an exhaust gas post-processing system 失效
    在排气后处理系统中控制还原剂的方法

    公开(公告)号:US07614220B2

    公开(公告)日:2009-11-10

    申请号:US11599898

    申请日:2006-11-14

    IPC分类号: F01N3/00

    摘要: The invention relates to a procedure for controlling the reducing agent in an exhaust gas post-processing system of a combustion machine with an exhaust gas duct, in which an SCR catalytic converter is provided in the direction of flow of the exhaust, wherein a reducing agent generation system has an NOx and CO/H2 generation unit,, an oxidation catalytic converter and a combined NOx storage / ammonia generation unit in the standard gas route of the reducing agent generation system, and, in order to reduce nitrogen oxide, ammonia is added as a reducing agent in front of the SCR catalytic converter by the reducing agent generation system, wherein source materials for the generation of ammonia are at least intermittently added to the NOx and CO/H2 generation unit via a fuel supply line and via an air supply line, wherein during the fat phase the air/fuel composition is changed in front of the oxidation catalytic converter in the form of a lambda modulation for a lambda value. It can thus be achieved that, in pulse mode, a high H2/CO yield can be achieved with a simultaneously low HC slip and the higher HC penetrations associated with the natural aging of the catalytic converter and the decreasing H2/CO yields are compensated. Influences resulting from the reactor geometry of the oxidation catalytic converter can be influences or compensated with the procedure in terms of its drive-away characteristic.

    摘要翻译: 本发明涉及一种用于控制具有废气管道的燃烧机的废气后处理系统中的还原剂的方法,其中SCR催化转化器沿排气方向设置,其中还原剂 发电系统在还原剂生成系统的标准气体路径中具有NOx和CO / H2生成单元,氧化催化转化器和组合的NOx储存/氨生成单元,为了还原氮氧化物,添加氨 作为通过还原剂生成系统在SCR催化转化器前面的还原剂,其中用于产生氨的源材料经由燃料供给管线至少间歇地添加到NOx和CO / H2生成单元,并且经由空气供给 线,其中在脂肪相期间,空气/燃料组合物以λ值的λ调制形式在氧化催化转化器之前改变。 因此,可以实现在脉冲模式中,可以同时具有低HC滑移并且与催化转化器的自然老化相关联的较高的HC渗透和降低的H 2 / CO收率来实现高的H 2 / CO收率。 由氧化催化转化器的反应器几何结构产生的影响可以根据其驱走特性的程序来影响或补偿。

    Catalytic Converter Assembly in an Exhaust Gas Posttreatment System
    8.
    发明申请
    Catalytic Converter Assembly in an Exhaust Gas Posttreatment System 失效
    催化转化器组件在排气后处理系统

    公开(公告)号:US20090199550A1

    公开(公告)日:2009-08-13

    申请号:US12084950

    申请日:2006-11-13

    IPC分类号: F01N3/20 F01N3/10

    摘要: The invention relates to a catalyst arrangement in an exhaust gas after-treatment system of an internal combustion engine comprising an exhaust gas line in which an SCR catalyst is positioned in the direction of flow of the exhaust gas. A reducing agent production system has an NOx and CO/H2 production unit and a combined NOx storage/ammonia production unit in the standard gas-carrying path of the reducing agent production system which supplies ammonia as the reducing agent. The NOx and CO/H2 production unit is at least temporarily supplied via a fuel supply and an air supply with starting products for producing ammonia. The combined NOx storage/ammonia production unit has a plurality catalyst sections having different characteristic properties or functionalities, enabling a higher ammonia yield in the combined NOx storage/ammonia production unit. The catalyst formulations make it possible to adjust a temperature profile that additionally influences the ammonia production rate and contributes to higher ammonia yields.

    摘要翻译: 本发明涉及一种内燃机废气后处理系统中的催化剂装置,其包括其中SCR催化剂沿废气流动方向定位的排气管线。 还原剂生产系统在还原剂生产系统的标准气体输送路径中具有供应氨作为还原剂的NOx和CO / H 2生产单元和组合的NOx储存/氨生产单元。 NO x和CO / H 2生产单元至少通过燃料供应和空气供应临时供应,生产用于生产氨的起始产品。 组合的NOx储存/氨生产单元具有多个具有不同特性或功能的催化剂部分,能够在组合的NOx储存/氨生产单元中产生更高的氨产率。 催化剂配方使得可以调节另外影响氨产生速率的温度分布,并有助于提高氨的产率。