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    Catalytic Soot Filter and Use Thereof in Treatment of Lean Exhaust Gases
    6.
    发明申请
    Catalytic Soot Filter and Use Thereof in Treatment of Lean Exhaust Gases 审中-公开
    催化烟尘过滤器及其在精益排气中的应用

    公开(公告)号：US20090285736A1

    公开(公告)日：2009-11-19

    申请号：US12465141

    申请日：2009-05-13

    申请人： Adolf SCHAFER-SINDLINGER ,  Marcus Pfeifer ,  Ulrich Hackbarth ,  Wilfried Muller ,  Egbert Lox ,  Thomas Kreuzer ,  Roger Staab ,  Michael Hoffmann ,  Jurgen Gieshoff

    发明人： Adolf SCHAFER-SINDLINGER ,  Marcus Pfeifer ,  Ulrich Hackbarth ,  Wilfried Muller ,  Egbert Lox ,  Thomas Kreuzer ,  Roger Staab ,  Michael Hoffmann ,  Jurgen Gieshoff

    IPC分类号： B01D53/94 ,  B01D50/00

    CPC分类号： B01J23/6562 ,  B01D53/944 ,  B01D2255/102 ,  B01D2255/202 ,  B01D2255/204 ,  B01D2255/206 ,  B01D2255/50 ,  B01D2255/908 ,  B01D2257/502 ,  B01D2257/702 ,  B01J23/56 ,  F01N3/0222 ,  F01N3/0253 ,  F01N3/035 ,  F01N2430/085 ,  F01N2510/065 ,  F01N2570/12 ,  F01N2570/16 ,  F02B3/06 ,  F02D41/024 ,  F02D41/025 ,  F02D41/029 ,  F02D41/405 ,  Y02A50/2341 ,  Y02T10/26 ,  Y02T10/44

    摘要： The invention provides a process for reducing the amounts of carbon monoxide, hydrocarbons and soot particles in the lean exhaust gas from an internal combustion engine using a particle filter, wherein the soot particles have a soot ignition temperature TZ and the particle filter is regenerated from time to time by raising the temperature of the particle filter to above the soot ignition temperature and burning the soot particles, wherein the temperature of the filter is increased to the temperature required to initiate soot ignition by burning additional fuel on the catalytic coating when the exhaust gas back pressure reaches a predetermined value. The process is characterised in that the particle filter is provided with a catalytic coating comprising a first group of components for reducing the ignition temperature of soot, said first group of components contains at least one oxygen storage component and at least one platinum group metal selected from the group consisting of platinum, palladium and rhodium. In a preferred embodiment of the process the catalytic coating further comprises a second group of components for oxidising carbon monoxide and hydrocarbons, said second group of components comprises at least a support material selected from the group consisting of aluminium oxide, silicon oxide, titanium oxide, zirconium oxide and zeolite and at least one platinum group metal selected from the group consisting of platinum, palladium and rhodium deposited on said support materials.

    摘要翻译： 本发明提供了一种减少来自使用颗粒过滤器的内燃机的贫废气中的一氧化碳，碳氢化合物和烟灰颗粒的量的方法，其中烟灰颗粒具有烟灰着火温度TZ，并且颗粒过滤器从时间再生 通过将颗粒过滤器的温度升高到烟炱点燃温度以上并燃烧烟灰颗粒，其中过滤器的温度通过在催化涂层上燃烧附加燃料而增加到启动烟灰点火所需的温度 背压达到预定值。 该方法的特征在于，颗粒过滤器设置有包含用于降低烟灰的点燃温度的第一组成分的催化涂层，所述第一组组分含有至少一种储氧组分和至少一种选自以下的铂族金属： 由铂，钯和铑组成的组。 在该方法的优选实施方案中，催化涂层还包含用于氧化一氧化碳和烃的第二组组分，所述第二组组分至少包含选自氧化铝，氧化硅，氧化钛， 氧化锆和沸石以及选自沉积在所述载体材料上的铂，钯和铑中的至少一种铂族金属。

    Process for checking the operatability of a nitrogen oxide storage catalyst
    7.
    发明授权
    Process for checking the operatability of a nitrogen oxide storage catalyst 有权
    用于检查氮氧化物存储催化剂的可操作性的方法

    公开(公告)号：US06684628B2

    公开(公告)日：2004-02-03

    申请号：US09832332

    申请日：2001-04-11

    申请人： Ulrich Göbel ,  Lutz Marc Ruwisch ,  Egbert Lox ,  Thomas Kreuzer

    发明人： Ulrich Göbel ,  Lutz Marc Ruwisch ,  Egbert Lox ,  Thomas Kreuzer

    IPC分类号： F01N300

    CPC分类号： F01N3/0864 ,  F01N3/0807 ,  F01N3/0842 ,  F01N11/00 ,  F01N2550/03 ,  F02D2041/147 ,  Y02T10/47

    摘要： The present invention provides processes for checking the operability of a nitrogen oxide storage catalyst during operation of a lean burn engine. The processes of the present invention utilize a nitrogen oxide storage material, a catalytically active component and optionally an oxygen storage material. During lean burn engine operation, damage to the catalytically active components is detected if the nitrogen oxide storage capacity in the kinetically controlled temperature range is lowered and damage to the storage material is detected if the nitrogen oxide storage capacity is lowered in the thermodynamically controlled temperature range.

    摘要翻译： 本发明提供了在稀燃发动机操作期间检查氮氧化物存储催化剂的可操作性的方法。 本发明的方法利用氮氧化物储存材料，催化活性组分和任选的储氧材料。 在稀燃发动机运转中，如果在动力学控制的温度范围内的氮氧化物存储容量降低并且如果在热力学控制的温度范围内降低了氮氧化物存储容量，则检测到对储存材料的损坏，则检测到对催化活性组分的损伤 。

    Process for regenerating a nitrogen oxides storage catalyst
    9.
    发明授权
    Process for regenerating a nitrogen oxides storage catalyst 有权
    再生氮氧化物储存催化剂的方法

    公开(公告)号：US07351677B2

    公开(公告)日：2008-04-01

    申请号：US10630303

    申请日：2003-07-29

    申请人： Friedemann Rohr ,  Peter Kattwinkel ,  Stefan D. Peter ,  Thomas Kreuzer ,  Egbert Lox

    发明人： Friedemann Rohr ,  Peter Kattwinkel ,  Stefan D. Peter ,  Thomas Kreuzer ,  Egbert Lox

    IPC分类号： B01J20/34

    CPC分类号： F02D41/0275 ,  B01D53/9495 ,  B01D53/96 ,  F01N3/0885 ,  F01N2430/06 ,  F01N2560/026 ,  Y02T10/20

    摘要： The present invention provides a process and a device for regeneration of a nitrogen oxide storage catalyst in the exhaust system of a diesel engine. The process comprises a first and a second regeneration strategy. The first regeneration strategy is applied when the exhaust gas temperature is above a threshold value and comprises changing the air/fuel-ratio from a lean to a rich value during a first regeneration period. The second regeneration strategy is applied when the exhaust gas temperature is below a threshold value and comprises switching the air/fuel-ratio back and forth between lean and rich air/fuel-ratios, forming a sequence of between 2 and 10 rich pulses and between 2 and 10 lean pulses during a second regeneration period.

    摘要翻译： 本发明提供一种用于在柴油发动机的排气系统中再生氮氧化物存储催化剂的方法和装置。 该方法包括第一和第二再生策略。 当废气温度高于阈值时，应用第一再生策略，并且包括在第一再生期间将空气/燃料比从贫值改变为浓值。 当废气温度低于阈值时，应用第二再生策略，并且包括在稀空燃比之间来回切换空燃比，形成富二脉冲之间的序列，介于 在第二再生期间的2和10个贫脉冲。