Method for providing ammonia for the selective catalytic reduction of nitrogen oxides and corresponding device
    42.
    发明授权
    Method for providing ammonia for the selective catalytic reduction of nitrogen oxides and corresponding device 有权
    提供氨用于氮氧化物的选择性催化还原和相应装置的方法

    公开(公告)号:US08341942B2

    公开(公告)日:2013-01-01

    申请号:US12604522

    申请日:2009-10-23

    IPC分类号: F01N3/20

    摘要: A method and a device for providing ammonia for the selective catalytic reduction of nitrogen oxides in the exhaust system of an internal combustion engine, include the following steps: a) recording at least one actuating variable for influencing the state of the internal combustion engine; b) calculating a possible nitrogen oxide emission of the internal combustion engine on the basis of an evaluation of the at least one measured variable; c) calculating an ammonia quantity which corresponds to the possible nitrogen oxide emission; and d) initiating the provision of the corresponding ammonia quantity by exhaust-gas-external evaporation in an evaporator and exhaust-gas-external hydrolysis of aqueous urea solution, wherein at least one of the following values: i) the heating power of the evaporator or ii) the quantity of aqueous urea solution supplied to the evaporator, is regulated on the basis of the ammonia quantity calculated in step c).

    摘要翻译: 一种用于提供用于选择性催化还原内燃机排气系统中的氮氧化物的氨的方法和装置,包括以下步骤:a)记录至少一个致动变量,用于影响内燃机的状态; b)基于所述至少一个测量变量的评估来计算所述内燃机的可能的氮氧化物排放; c)计算对应于可能的氮氧化物排放的氨量; 和d)通过蒸发器中的废气 - 外部蒸发和尿素水溶液的废气 - 外部水解开始提供相应的氨量,其中以下值中的至少一个:i)蒸发器的加热功率 或ii)提供给蒸发器的尿素水溶液的量基于步骤c)中计算的氨量进行调节。

    Method and device for providing a gaseous substance mixture
    45.
    发明授权
    Method and device for providing a gaseous substance mixture 有权
    用于提供气态物质混合物的方法和装置

    公开(公告)号:US08155509B2

    公开(公告)日:2012-04-10

    申请号:US12272384

    申请日:2008-11-17

    IPC分类号: D06F75/00 B01D53/56 C01C3/00

    摘要: A device and method for providing a gaseous substance mixture which includes at least one reducing agent and/or at least one reducing agent precursor, includes a reservoir for an aqueous solution which includes at least one reducing agent precursor that can be flow connected to an evaporator chamber, and a device for dosing the aqueous solution in the evaporator chamber. A device can heat the evaporator chamber to a temperature higher than or equal to a critical temperature, in which the aqueous solution is at least partially evaporated. The device and method enable reducing agent to be provided for selective catalytic reduction of nitrogen oxides in the exhaust of an internal combustion engine. Preferably, an evaporator unit is configured as the evaporator chamber and a hydrolysis catalytic converter is disposed outside the exhaust system. As a result, the size of the hydrolysis catalytic converter is reduced, allowing compact construction.

    摘要翻译: 一种用于提供包含至少一种还原剂和/或至少一种还原剂前体的气态物质混合物的装置和方法,包括用于水溶液的储存器,其包括至少一种还原剂前体,所述还原剂前体可流动连接到蒸发器 室,以及用于对蒸发器室中的水溶液进行计量的装置。 一种装置可以将蒸发器室加热到高于或等于临界温度的温度,其中水溶液至少部分蒸发。 该装置和方法使还原剂能够用于选择性地催化还原内燃机排气中的氮氧化物。 优选地,蒸发器单元被配置为蒸发器室,并且水解催化转化器设置在排气系统的外部。 结果,水解催化转化器的尺寸减小,允许紧凑的结构。

    Method of removing particulates from exhaust gases, and corresponding fiber layer, particulate filter, exhaust system and vehicle
    47.
    发明授权
    Method of removing particulates from exhaust gases, and corresponding fiber layer, particulate filter, exhaust system and vehicle 有权
    从废气中除去微粒的方法,以及相应的纤维层,颗粒过滤器,排气系统和车辆

    公开(公告)号:US08012244B2

    公开(公告)日:2011-09-06

    申请号:US11825803

    申请日:2007-07-09

    IPC分类号: B01D46/00

    摘要: A method for removing particulates from a gas stream includes providing a gas-permeable filter layer having subregions with a parameter of differing magnitudes in the direction of the layer thickness. This parameter relates at least to the porosity, the fiber diameter of fibers or the fiber type content of the filter layer. The gas stream is divided into partial gas streams which are each passed through different subregions of the filter layer. Fiber layers, particulate filters, exhaust systems and vehicles based on this method are also provided.

    摘要翻译: 从气流中除去微粒的方法包括提供具有在层厚度方向上具有不同幅度参数的子区域的透气过滤层。 该参数至少涉及孔隙率,纤维的纤维直径或过滤层的纤维类型含量。 气流被分成部分气流,每个气流通过过滤层的不同子区域。 还提供了基于该方法的纤维层,微粒过滤器,排气系统和车辆。

    Method and device for providing a gaseous substance mixture
    48.
    发明授权
    Method and device for providing a gaseous substance mixture 有权
    用于提供气态物质混合物的方法和装置

    公开(公告)号:US07986870B2

    公开(公告)日:2011-07-26

    申请号:US12271943

    申请日:2008-11-17

    IPC分类号: F24C1/00 F24C11/00

    摘要: A device and a method for providing a gaseous substance mixture including at least one of a reducing agent and/or a reducing agent precursor, include a reservoir for an aqueous solution including at least one reducing agent precursor, from which the aqueous solution can be delivered into at least one metering line having a dispensing opening by a delivery device, and a device for heating the metering line above a critical temperature greater than the boiling temperature of water. Complete evaporation of an aqueous solution including urea and subsequent hydrolysis to form a substance mixture including ammonia, are carried out. The substance mixture is metered as a reducing agent into an SCR catalytic converter. Carrying out the evaporation outside the exhaust system uses considerably smaller hydrolysis catalytic converters, which is space-saving and cost-saving compared to conventional devices for providing a reducing agent for selective catalytic reduction of nitrogen oxides.

    摘要翻译: 一种用于提供包含还原剂和/或还原剂前体中的至少一种的气态物质混合物的装置和方法,包括用于包含至少一种还原剂前体的水溶液的储存器,可以从该还原剂前体输送水溶液 进入具有通过输送装置的分配开口的至少一个计量管线,以及用于将计量管线加热到高于水的沸点温度的临界温度以上的装置。 完成包括尿素在内的水溶液的蒸发,随后进行水解以形成包含氨的物质混合物。 将物质混合物作为还原剂计量加入到SCR催化转化器中。 在排气系统外部进行蒸发使用相当小的水解催化转化器,与用于提供用于氮氧化物的选择性催化还原的还原剂的常规装置相比,其节省空间并节省成本。

    Metal foil having different indentations and assembly, honeycomb body and exhaust gas treatment device having a metal foil
    49.
    发明授权
    Metal foil having different indentations and assembly, honeycomb body and exhaust gas treatment device having a metal foil 失效
    具有不同压痕和组装的金属箔,具有金属箔的蜂窝体和废气处理装置

    公开(公告)号:US07871576B2

    公开(公告)日:2011-01-18

    申请号:US11725336

    申请日:2007-03-19

    IPC分类号: B01D50/00

    摘要: A metal foil has a material thickness in a range of from 0.15 mm to 0.02 mm and a structure with elevations and depressions which extend over a length of the metal foil and are disposed adjacent one another. At least some of the elevations or depressions have at least one first indentation and at least one second indentation adjacent the at least one first indentation. The at least one second indentation is at a different distance from the corresponding elevation or depression than the first indentation. An assembly having filter material, a honeycomb body and an exhaust gas treatment device for mobile internal combustion engines, are also provided.

    摘要翻译: 金属箔的材料厚度在0.15mm至0.02mm的范围内,并且具有在金属箔的长度上延伸并且彼此相邻设置的具有凸起和凹陷的结构。 至少一些凸起或凹陷具有至少一个第一凹陷和邻近该至少一个第一凹槽的至少一个第二凹槽。 至少一个第二压痕与相应的高度或凹陷处的距离与第一压痕不同。 还提供了一种具有过滤材料的组件,蜂窝体和用于移动式内燃机的废气处理装置。

    METHOD FOR REGENERATING AT LEAST ONE PARTICLE AGGLOMERATOR AND MOTOR VEHICLE INCLUDING AN EXHAUST GAS AFTER-TREATMENT SYSTEM
    50.
    发明申请
    METHOD FOR REGENERATING AT LEAST ONE PARTICLE AGGLOMERATOR AND MOTOR VEHICLE INCLUDING AN EXHAUST GAS AFTER-TREATMENT SYSTEM 审中-公开
    用于再生至少一个颗粒聚集体和电动车的方法,包括排气后处理系统

    公开(公告)号:US20100175371A1

    公开(公告)日:2010-07-15

    申请号:US12686532

    申请日:2010-01-13

    IPC分类号: F01N3/023 F01N3/10

    摘要: A method for regenerating at least one particle agglomerator of an exhaust gas after-treatment system of an internal combustion engine of a motor vehicle, includes operating the internal combustion engine in at least one operating phase in such a way that a sufficient portion of nitrogen dioxides is directly produced in the exhaust gas in order to ensure a conversion of particles containing carbon in the at least one particle agglomerator. A motor vehicle suitable for carrying out the method is also provided.

    摘要翻译: 用于再生机动车辆的内燃机的废气后处理系统的至少一个颗粒聚集器的方法包括在至少一个操作阶段中操作内燃机,使得足够部分的二氧化氮 直接在废气中产生,以确保在至少一个颗粒聚集器中转化含有碳的颗粒。 还提供了适用于执行该方法的机动车辆。