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19 条记录 (耗时 0.024 秒)

    LNT-SCR system optimized for thermal gradient
    1.
    发明授权
    LNT-SCR system optimized for thermal gradient 失效
    针对热梯度优化的LNT-SCR系统

    公开(公告)号：US07950226B2

    公开(公告)日：2011-05-31

    申请号：US11803204

    申请日：2007-05-14

    申请人： James Edward McCarthy, Jr. ,  Owen Herman Bailey

    发明人： James Edward McCarthy, Jr. ,  Owen Herman Bailey

    IPC分类号： F01N3/10

    CPC分类号： F01N3/0871 ,  F01N3/2073 ,  F01N9/00 ,  F01N13/0097 ,  F01N2240/30 ,  Y02T10/20 ,  Y02T10/47

    摘要： In an exhaust aftertreatment system, two LNTs having differing compositions are configured in series downstream from an inline fuel reformer. The downstream LNT is adapted for desulfation at higher temperatures than the upstream LNT. During desulfation, the system develops temperature gradients with the temperatures increasing in the direction of exhaust flow. The ordering of the LNTs is designed utilize these gradients. In a preferred embodiment, the system also includes two SCR catalysts having different compositions. The SCR catalyst with a composition adapted to tolerate higher temperatures is located nearer the downstream end of the system.

    摘要翻译： 在废气后处理系统中，具有不同组成的两个LNT被配置为串联式燃料重整器的下游串联。 下游LNT适于在比上游LNT更高的温度下脱硫。 在脱硫期间，系统发展温度梯度，其温度随排气方向增加。 设计LNTs的排序利用这些梯度。 在优选的实施方案中，该系统还包括具有不同组成的两种SCR催化剂。 具有适于耐受较高温度的组合物的SCR催化剂位于更接近系统的下游端。

    LNT desulfation strategy with reformer temperature management
    2.
    发明授权
    LNT desulfation strategy with reformer temperature management 有权
    LNT脱硫策略与重整器温度管理

    公开(公告)号：US07669408B2

    公开(公告)日：2010-03-02

    申请号：US11293065

    申请日：2005-12-02

    申请人： James Edward McCarthy, Jr. ,  Johannes Walter Reuter

    发明人： James Edward McCarthy, Jr. ,  Johannes Walter Reuter

    IPC分类号： F01N3/00

    CPC分类号： F01N3/0814 ,  F01N3/0842 ,  F01N3/0885 ,  F01N3/2066 ,  F01N9/00 ,  F01N13/0097 ,  F01N2240/30 ,  F01N2560/026 ,  F01N2560/06 ,  F01N2560/14 ,  F01N2610/03 ,  F01N2610/146 ,  F01N2900/0422 ,  F02D41/0245 ,  F02D41/028 ,  F02D2200/0802 ,  F02D2200/0804 ,  Y02A50/2325 ,  Y02T10/24 ,  Y02T10/47

    摘要： Desulfation methods for an exhaust treatment system having a fuel reformer configured upstream of a LNT. Reductant is injected upstream of the fuel reformer. The reductant reacts within the reformer to generate heat, but the system is configured for some reductant to breakthrough and react in the LNT to generate further heat. This configuration allows the LNT to operate at temperatures higher the than first device and facilitates independent control of the LNT and first device temperatures. An outer loop controls the LNT temperature by issuing instructions to an inner loop that controls the reformer. Typically, the inner loop will pulse the reductant injection rate in order to limit the reformer temperature. The outer loop can pulses the loop on a longer time scale, resulting in two pulse periods. Through timing, a reformate peak from one period is made to overlap a temperature peak from a previous period.

    摘要翻译： 具有配置在LNT上游的燃料重整器的废气处理系统的脱硫方法。 在燃料重整器的上游注入还原剂。 还原剂在重整器内反应产生热量，但是该系统被配置为使一些还原剂在LNT中穿透并反应以产生进一步的热量。 该配置允许LNT在高于第一器件的温度下操作，并且促进对LNT和第一器件温度的独立控制。 外环通过向控制重整器的内循环发出指令来控制LNT温度。 通常，内循环将脉冲还原剂喷射速率以限制重整器温度。 外环可以在更长的时间尺度上对环路进行脉冲，从而产生两个脉冲周期。 通过计时，将一个时期的重组峰值与先前期间的温度峰值重叠。

    Narrow speed range diesel-powered engine system w/ aftertreatment devices
    4.
    发明授权
    Narrow speed range diesel-powered engine system w/ aftertreatment devices 失效
    狭窄的速度范围柴油发动机系统w /后处理装置

    公开(公告)号：US07063642B1

    公开(公告)日：2006-06-20

    申请号：US11246974

    申请日：2005-10-07

    申请人： Haoran Hu ,  Thomas Stover ,  James Edward McCarthy, Jr.

    发明人： Haoran Hu ,  Thomas Stover ,  James Edward McCarthy, Jr.

    IPC分类号： F16H59/74 ,  F01N3/00

    CPC分类号： F02D41/0235 ,  F01N3/0842 ,  F01N3/0871 ,  F01N3/0885 ,  F01N3/2066 ,  F01N3/2073 ,  F01N13/0097 ,  F01N2240/30 ,  F01N2250/02 ,  F01N2250/12 ,  F01N2250/14 ,  F01N2610/03 ,  F02D31/001 ,  F02D41/00 ,  F16H61/66259 ,  F16H2059/743 ,  F16H2061/0018 ,  Y02A50/2325 ,  Y02T10/24 ,  Y10T477/663

    摘要： One or more parameters for denitration or desulfations of a LNT is varied, whereby the saturation of NOx and/or SOx in the LNT is reduced to a lower level when an operating state makes the LNT otherwise less effective or places a greater demand for conversion efficiency on the LNT. The operating state can relate to whether the LNT is at the limit of its effective operating temperature range, a degree of poisoning, or an engine operating state. Selectively tolerating high degrees of sulfur poisoning or NOx saturation during periods of low exhaust flow allows the efficiency of denitrations and/or desulfations to be increased over a large portion of a vehicle's operating cycle, particularly when the engine uses a CVT. Another concept relates to a power generation system comprising an engine tuned to efficiently operate in a narrow speed range for all levels of power output.

    摘要翻译： 改变一个或多个用于脱氮或脱硫的参数，从而当操作状态使得LNT不太有效或对转换效率的需求较大时，LNT中的NOx和/或SOx的饱和度降低到较低的水平 在LNT上。 操作状态可以与LNT是否处于其有效工作温度范围，中毒程度或发动机工作状态的极限有关。 特别是在发动机使用无级变速器时，选择性地容忍低排气流量期间的高硫硫中毒或NOx饱和，允许在大部分车辆运行循环中提高脱硝和/或脱硫效率。 另一个概念涉及一种发电系统，其包括被调谐以在所有级别的功率输出的低速范围内有效操作的发动机。

    System and method for coupled DPF regeneration and LNT DeNOx
    6.
    发明授权
    System and method for coupled DPF regeneration and LNT DeNOx 有权
    用于耦合DPF再生和LNT DeNOx的系统和方法

    公开(公告)号：US08209960B2

    公开(公告)日：2012-07-03

    申请号：US12632581

    申请日：2009-12-07

    申请人： Dmitry Arie Shamis ,  James Edward McCarthy, Jr. ,  Jiyang Yan ,  David Yee

    发明人： Dmitry Arie Shamis ,  James Edward McCarthy, Jr. ,  Jiyang Yan ,  David Yee

    IPC分类号： F01N3/00

    CPC分类号： F01N3/0253 ,  F01N3/0842 ,  F01N3/0885 ,  F01N3/106 ,  F01N3/36 ,  F01N9/002 ,  F01N13/0097 ,  F01N2240/30 ,  F01N2410/00 ,  F01N2560/06 ,  F01N2560/14 ,  F01N2610/03 ,  F01N2610/14 ,  F01N2610/1453 ,  F02B37/00 ,  Y02A50/2325 ,  Y02T10/47

    摘要： A diesel exhaust aftertreatment system comprises an LNT within an exhaust line. A low thermal mass DPF and a low thermal mass fuel reformer are configured within the exhaust line upstream from the LNT. A thermal mass is configured downstream from the fuel reformer and the DPF, but upstream from the LNT. For LNT denitration, the fuel reformer is rapidly heated and then used to catalyze steam reforming. The DPF is also rapidly heat each time the fuel reformer is heated and the LNT denitrated. The system operates to regenerate the DPF each time the LNT is denitrated. Preferably, a second DPF is provided to augment the performance of the first DPF. Preferably, the first DPF is small and of the flow through type whereas the second DPF is much larger and of the wall flow filter type. The second DPF can be used as the thermal mass.

    摘要翻译： 柴油机废气后处理系统包括在排气管线内的LNT。 低热量DPF和低热质量燃料重整器配置在LNT上游的排气管线内。 热质量被配置在燃料重整器和DPF的下游，但是在LNT的上游。 对于LNT脱硝，燃料重整器被快速加热，然后用于催化蒸汽重整。 每当燃料重整器被加热并且LNT脱硝时，DPF也快速加热。 每次LNT脱硝时，系统都会对DPF进行再生。 优选地，提供第二DPF以增强第一DPF的性能。 优选地，第一DPF小且流通型，而第二DPF远大于壁流式过滤器类型。 第二个DPF可以用作热质量。

    Optimized rhodium usage in LNT SCR system
    7.
    发明授权
    Optimized rhodium usage in LNT SCR system 有权
    LNT SCR系统中优化的铑用量

    公开(公告)号：US08069654B2

    公开(公告)日：2011-12-06

    申请号：US11653745

    申请日：2007-01-16

    申请人： David Mark Ginter ,  James Edward McCarthy, Jr.

    发明人： David Mark Ginter ,  James Edward McCarthy, Jr.

    IPC分类号： F01N3/00

    CPC分类号： F01N3/0814 ,  B01D53/9418 ,  B01D53/9422 ,  B01D53/9477 ,  B01D2251/208 ,  B01D2255/1025 ,  B01D2255/202 ,  B01D2255/204 ,  B01D2255/91 ,  B01D2255/911 ,  B01D2258/012 ,  F01N3/0842 ,  F01N3/0878 ,  F01N3/0885 ,  F01N3/2073 ,  F01N13/009 ,  F01N13/011 ,  F01N2240/30 ,  F01N2610/03 ,  Y02A50/2325 ,  Y02T10/24

    摘要： Rhodium utilization in LNT/SCR-based exhaust after treatment systems for medium and heavy duty trucks is reduced by operating inline fuel reformers in a certain manner. The fuel processors are operated at steam reforming temperatures to produce a reformate-containing exhaust having a hydrogen to CO ratio of at least about 3:2 or at least about 3% hydrogen, This generally involves operating the fuel reformers at temperatures from about 500 to about 625° C. and with an overall fuel to air ratio from about 1.10 to about 1.40. In this manner, regeneration can be efficiently carried out while limiting the catalyst loading of the fuel processors to no more than about 1.0 grams rhodium per liter maximum displacement of the diesel engine and the catalyst loading of the LNTs to no more than about 0.50 grams rhodium per liter maximum displacement of the diesel engine.

    摘要翻译： 通过以某种方式运行直列式燃料重整器，减少了中型和重型卡车处理系统后的LNT / SCR型尾气中的铑利用。 燃料处理器在蒸汽重整温度下运行以产生具有至少约3:2或至少约3％氢的氢至CO比的重整油含量排气。这通常涉及在约500至 约625℃，总燃料空气比约为1.10至约1.40。 以这种方式，可以有效地进行再生，同时将燃料处理器的催化剂负载限制在不超过约1.0克铑/升柴油发动机的最大排量和催化剂负载量至不超过约0.50克的铑 每升最大排量的柴油发动机。

    Exhaust aftertreatment system with transmission control
    8.
    发明授权
    Exhaust aftertreatment system with transmission control 失效
    排气后处理系统带传动控制

    公开(公告)号：US07628009B2

    公开(公告)日：2009-12-08

    申请号：US11245880

    申请日：2005-10-07

    申请人： Haoran Hu ,  Thomas Stover ,  James Edward McCarthy, Jr.

    发明人： Haoran Hu ,  Thomas Stover ,  James Edward McCarthy, Jr.

    IPC分类号： F01N3/00

    CPC分类号： F02D41/0275 ,  F02D41/0215 ,  F02D2400/12 ,  Y10T477/653 ,  Y10T477/663

    摘要： A power generation system comprising a LNT for exhaust aftertreatment. The LNT has an effective operating temperature range. When the LNT is near a limit of its effective operating temperature range, the transmission is used to select operating points that increase the LNT's effectiveness. Generally, these operating points reduce the exhaust flow rate, although other factors such as the exhaust temperature may also be taken into account in selecting the operating points. Preferably, the LNT's effective operating temperature-range includes exhaust temperatures produced by the engine at its point of peak power output, whereby the LNT does not approach the limits of its effective operating temperature range except when the engine is at less than peak power. At lower power levels, it is generally possible to select operating points that provide lower exhaust flow rates than the flow rate occurring at the peak power level.

    摘要翻译： 一种发电系统，包括用于排气后处理的LNT。 LNT具有有效的工作温度范围。 当LNT接近其有效工作温度范围的极限时，传输用于选择增加LNT效能的工作点。 通常，这些操作点降低排气流量，但是在选择工作点时也可以考虑排气温度等其他因素。 优选地，LNT的有效工作温度范围包括发动机在其峰值功率输出点产生的排气温度，由此LNT不接近其有效工作温度范围的限制，除非发动机低于峰值功率。 在较低的功率水平下，通常可以选择提供比在峰值功率水平下发生的流量更低的排气流量的工作点。