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109 条记录 (耗时 0.023 秒)

    Method of operating a catalyst which includes components for storing hydrocarbon
    6.
    发明申请
    Method of operating a catalyst which includes components for storing hydrocarbon 有权
    操作包含用于储存烃的组分的催化剂的方法

    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。

    Catalytic Soot Filter and Use Thereof in Treatment of Lean Exhaust Gases
    10.
    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。