利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

25 条记录 (耗时 0.032 秒)

    Valveless dual leg exhaust aftertreatment system
    3.
    发明授权
    Valveless dual leg exhaust aftertreatment system 失效
    无阀双腿排气后处理系统

    公开(公告)号：US07334400B2

    公开(公告)日：2008-02-26

    申请号：US11223589

    申请日：2005-09-10

    申请人： Jiyang Yan ,  James Edward McCarthy, Jr. ,  Haoran Hu

    发明人： Jiyang Yan ,  James Edward McCarthy, Jr. ,  Haoran Hu

    IPC分类号： F01N3/00

    CPC分类号： F01N3/0814 ,  B01D53/9418 ,  B01D53/9481 ,  B01D53/9495 ,  B01D2251/2062 ,  B01D2255/911 ,  B01D2258/012 ,  F01N3/035 ,  F01N3/0821 ,  F01N3/0842 ,  F01N3/2066 ,  F01N3/2073 ,  F01N13/009 ,  F01N13/0097 ,  F01N13/011 ,  F01N2240/25 ,  F01N2240/30 ,  F01N2570/18 ,  F01N2610/02 ,  F01N2610/03 ,  Y02A50/2325 ,  Y02T10/24

    摘要： An exhaust aftertreatment system comprising two or more branches, at least one of which contains a NOx adsorber-catalyst. The branches unite downstream into a trailing conduit that contains an ammonia-SCR catalyst. Ammonia generated by the NOx adsorber-catalyst during regeneration is stored for later use by the SCR catalyst. One advantage of this configuration is a continuous or near continuous presence of oxygen within the trailing exhaust conduit. The continuous presence of improves the efficiency of the SCR catalyst. Another concept is to configure a multi-branch exhaust aftertreatment system without valves, dampers, or other electronically controlled devices adapted to selectively alter the distribution of the exhaust between the branches. The absence of such devices generally results in a comparatively balanced division of exhaust between the branches. One benefit of this configuration is improved reliability as compared to systems that use valves.

    摘要翻译： 一种排气后处理系统，包括两个或更多个分支，其中至少一个分支含有NOx吸附剂 - 催化剂。 支链将下游融入含有氨-SCR催化剂的尾管中。 在再生期间由NOx吸附剂催化剂产生的氨被SCR催化剂储存供以后使用。 这种构造的一个优点是在尾部排气管道内连续或接近连续地存在氧气。 持续存在提高了SCR催化剂的效率。 另一个概念是配置多分支排气后处理系统，而不需要阀，阻尼器或其他电子控制装置，其适于选择性地改变分支之间的排气分布。 这种装置的缺乏通常导致分支之间的排气相对平衡的划分。 与使用阀门的系统相比，该配置的一个好处是提高了可靠性。

    System and Method For Coupled DPF Regeneration and LNT DeNOx
    6.
    发明申请
    System and Method For Coupled DPF Regeneration and LNT DeNOx 有权
    耦合DPF再生和LNT脱硝的系统和方法

    公开(公告)号：US20100077734A1

    公开(公告)日：2010-04-01

    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： F01N9/00 ,  F01N3/035 ,  F01N3/023

    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。

    System and method for coupled DPF regeneration and LNT DeNOx
    7.
    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。

    Thermal management of hybrid LNT/SCR aftertreatment during desulfation
    9.
    发明申请
    Thermal management of hybrid LNT/SCR aftertreatment during desulfation 有权
    脱硫期间混合LNT / SCR后处理的热管理

    公开(公告)号：US20070006573A1

    公开(公告)日：2007-01-11

    申请号：US11176710

    申请日：2005-07-07

    申请人： Haoran Hu ,  James McCarthy ,  Jiyang Yan

    发明人： Haoran Hu ,  James McCarthy ,  Jiyang Yan

    IPC分类号： F01N3/00

    CPC分类号： F01N3/0885 ,  B01D53/9418 ,  B01D53/944 ,  B01D53/9477 ,  B01D53/9481 ,  B01D2255/911 ,  B01D2257/302 ,  B01D2258/012 ,  F01N3/035 ,  F01N3/0814 ,  F01N3/0842 ,  F01N3/106 ,  F01N3/108 ,  F01N3/2033 ,  F01N3/2053 ,  F01N3/206 ,  F01N11/002 ,  F01N11/005 ,  F01N13/009 ,  F01N13/0097 ,  F01N2240/25 ,  F01N2240/30 ,  F01N2560/06 ,  Y02T10/24 ,  Y02T10/26 ,  Y02T10/47

    摘要： In an exhaust aftertreatment system comprising a NOx adsorber-catalyst followed by an SCR catalyst, means are provided for preventing the SCR catalyst from becoming heated to near the same peak temperatures as the NOx adsorber-catalyst during desulfation. In one embodiment, the means is a thermal mass between the NOx adsorber-catalyst and the SCR catalyst. In another embodiment, the means is a valve configured to selectively divert exhaust leaving the NOx adsorber-catalyst from the SCR catalyst. In a method of the invention, the NOx adsorber-catalyst temperature is cycled during desulfation. The peaks of the cycles are within an appropriate temperature range for desulfating the NOx adsorber-catalyst, but the average temperature is below the temperature range at which the SCR catalyst is damaged. The temperature peaks are damped as they travel from the NOx adsorber-catalyst to the SCR, whereby the SCR experiences much lower peak temperatures than the NOx adsorber-catalyst.

    摘要翻译： 在包含NOx吸附剂催化剂和SCR催化剂的废气后处理系统中，提供了用于防止SCR催化剂在脱硫期间被加热到接近与NOx吸附剂催化剂相同的峰值温度的装置。 在一个实施方案中，该装置是NOx吸附剂 - 催化剂和SCR催化剂之间的热质量。 在另一个实施方案中，装置是被配置为选择性地将排出NO x吸附剂催化剂的排出物从SCR催化剂转移的阀。 在本发明的方法中，NOx吸附剂 - 催化剂温度在脱硫过程中循环。 循环的峰值在用于使NOx吸附剂 - 催化剂脱硫的适当温度范围内，但平均温度低于SCR催化剂损坏的温度范围。 温度峰值从NO x吸附剂催化剂传递到SCR时被阻尼，由此SCR的吸收塔催化剂的峰值温度要低得多。

    Valveless dual leg exhaust aftertreatment system
    10.
    发明申请
    Valveless dual leg exhaust aftertreatment system 失效
    无阀双腿排气后处理系统

    公开(公告)号：US20060010859A1

    公开(公告)日：2006-01-19

    申请号：US11223589

    申请日：2005-09-10

    申请人： Jiyang Yan ,  James McCarthy ,  Haoran Hu

    发明人： Jiyang Yan ,  James McCarthy ,  Haoran Hu

    IPC分类号： F01N3/00

    CPC分类号： F01N3/0814 ,  B01D53/9418 ,  B01D53/9481 ,  B01D53/9495 ,  B01D2251/2062 ,  B01D2255/911 ,  B01D2258/012 ,  F01N3/035 ,  F01N3/0821 ,  F01N3/0842 ,  F01N3/2066 ,  F01N3/2073 ,  F01N13/009 ,  F01N13/0097 ,  F01N13/011 ,  F01N2240/25 ,  F01N2240/30 ,  F01N2570/18 ,  F01N2610/02 ,  F01N2610/03 ,  Y02A50/2325 ,  Y02T10/24

    摘要： An exhaust aftertreatment system comprising two or more branches, at least one of which contains a NOx adsorber-catalyst. The branches unite downstream into a trailing conduit that contains an ammonia-SCR catalyst. Ammonia generated by the NOx adsorber-catalyst during regeneration is stored for later use by the SCR catalyst. One advantage of this configuration is a continuous or near continuous presence of oxygen within the trailing exhaust conduit. The continuous presence of improves the efficiency of the SCR catalyst. Another concept is to configure a multi-branch exhaust aftertreatment system without valves, dampers, or other electronically controlled devices adapted to selectively alter the distribution of the exhaust between the branches. The absence of such devices generally results in a comparatively balanced division of exhaust between the branches. One benefit of this configuration is improved reliability as compared to systems that use valves.

    摘要翻译： 一种排气后处理系统，包括两个或更多个分支，其中至少一个分支含有NOx吸附剂 - 催化剂。 支链将下游融入含有氨-SCR催化剂的尾管中。 在再生期间由NOx吸附剂催化剂产生的氨被SCR催化剂储存供以后使用。 这种构造的一个优点是在尾部排气管道内连续或接近连续地存在氧气。 持续存在提高了SCR催化剂的效率。 另一个概念是配置多分支排气后处理系统，而不需要阀，阻尼器或其他电子控制装置，其适于选择性地改变分支之间的排气分布。 这种装置的缺乏通常导致分支之间的排气相对平衡的划分。 与使用阀门的系统相比，该配置的一个好处是提高了可靠性。