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    Mufflers for use with engine retarders; and methods
    3.
    发明授权
    Mufflers for use with engine retarders; and methods 失效
    消声器用于发动机缓速器; 和方法

    公开(公告)号：US06354398B1

    公开(公告)日：2002-03-12

    申请号：US09571342

    申请日：2000-05-16

    申请人： Theodore G. Angelo ,  John Hamrin ,  Eivind Stenersen ,  John Hiemstra ,  Wayne M. Wagner ,  Ted J. Wiegandt

    发明人： Theodore G. Angelo ,  John Hamrin ,  Eivind Stenersen ,  John Hiemstra ,  Wayne M. Wagner ,  Ted J. Wiegandt

    IPC分类号： F01N124

    CPC分类号： F01N1/006 ,  F01N1/023 ,  F01N1/04 ,  F01N1/24 ,  F01N2470/02 ,  F01N2470/20 ,  F01N2470/24 ,  F01N2490/155 ,  F01N2490/20

    摘要： A muffler is described for muffling both positive power and compression brake type engine retarders. The muffler includes an outer shell defining an internal volume. A first, inner, perforated wall is spaced from the outer shell and defines a first, annular, volume therebetween. A first volume of packing material is positioned within the annular volume. An inlet tube is oriented within the internal volume. In certain embodiments, the inner perforated wall circumscribes at least a portion of the inlet tube, and extends a distance of at least 25% of the axial length of the outer wall. Both single and dual muffler systems are described. Methods of use and operation are also provided.

    摘要翻译： 消声器被描述为消除正功率和压缩制动型发动机减速器。 消音器包括限定内部容积的外壳。 第一内部穿孔壁与外壳间隔开并在其间限定第一环形体积。 第一体积的包装材料定位在环形体积内。 入口管在内部容积内定向。 在某些实施例中，内穿孔壁限定入口管的至少一部分，并延伸至外壁轴向长度的至少25％的距离。 描述单和双消声器系统。 还提供了使用和操作的方法。

    Method for regenerating a diesel particulate filter
    4.
    发明授权
    Method for regenerating a diesel particulate filter 有权
    再生柴油微粒过滤器的方法

    公开(公告)号：US07861521B2

    公开(公告)日：2011-01-04

    申请号：US12370411

    申请日：2009-02-12

    申请人： Wenzhong Zhang ,  Theodore G. Angelo

    发明人： Wenzhong Zhang ,  Theodore G. Angelo

    IPC分类号： F01N3/00

    CPC分类号： F01N3/035 ,  F01N3/0231 ,  F01N3/0253 ,  F01N2250/02

    摘要： A method is disclosed for regenerating a diesel particulate filter without excessively increasing NO2 emissions. The system includes a fuel delivery device, an oxidation catalyst, and a diesel particulate filter. During a first operational mode, the fuel injection device injects a relatively smaller amount of fuel into the exhaust stream to reduce the capacity of the oxidation catalyst to oxidize NO in the exhaust stream to NO2. At a determined time, a second operational mode is initiated where a relatively larger amount of fuel is injected into the exhaust stream and is oxidized within the oxidation catalyst, thereby raising the exhaust temperature sufficiently to combust substantially all of the soot trapped on the diesel particulate filter.

    摘要翻译： 公开了一种用于再生柴油微粒过滤器而不过度增加NO 2排放的方法。 该系统包括燃料输送装置，氧化催化剂和柴油微粒过滤器。 在第一操作模式期间，燃料喷射装置将相对较少量的燃料喷射到排气流中以降低氧化催化剂将排气流中的NO氧化为NO 2的能力。 在确定的时间，开始第二操作模式，其中相对较大量的燃料被注入排气流中并在氧化催化剂内被氧化，从而足够地提高废气温度以燃烧基本上所有被捕获在柴油颗粒上的烟灰 过滤。

    Method for Regenerating a Diesel Particulate Filter
    5.
    发明申请
    Method for Regenerating a Diesel Particulate Filter 有权
    再生柴油微粒过滤器的方法

    公开(公告)号：US20090235649A1

    公开(公告)日：2009-09-24

    申请号：US12370411

    申请日：2009-02-12

    申请人： Wenzhong Zhang ,  Theodore G. Angelo

    发明人： Wenzhong Zhang ,  Theodore G. Angelo

    IPC分类号： F01N9/00 ,  F01N3/023 ,  F01N3/035

    CPC分类号： F01N3/035 ,  F01N3/0231 ,  F01N3/0253 ,  F01N2250/02

    摘要： A method is disclosed for regenerating a diesel particulate filter without excessively increasing NO2 emissions. The system includes a fuel delivery device, an oxidation catalyst, and a diesel particulate filter. During a first operational mode, the fuel injection device injects a relatively smaller amount of fuel into the exhaust stream to reduce the capacity of the oxidation catalyst to oxidize NO in the exhaust stream to NO2. At a determined time, a second operational mode is initiated where a relatively larger amount of fuel is injected into the exhaust stream and is oxidized within the oxidation catalyst, thereby raising the exhaust temperature sufficiently to combust substantially all of the soot trapped on the diesel particulate filter.

    摘要翻译： 公开了一种用于再生柴油微粒过滤器而不过度增加NO 2排放的方法。 该系统包括燃料输送装置，氧化催化剂和柴油微粒过滤器。 在第一操作模式期间，燃料喷射装置将相对较少量的燃料喷射到排气流中以降低氧化催化剂将排气流中的NO氧化为NO 2的能力。 在确定的时间，开始第二操作模式，其中相对较大量的燃料被注入排气流中并在氧化催化剂内被氧化，从而足够地提高废气温度以燃烧基本上所有被捕获在柴油颗粒上的烟灰 过滤。

    Diesel particulate matter reduction system
    6.
    发明授权
    Diesel particulate matter reduction system 有权
    柴油颗粒物减少系统

    公开(公告)号：US07340888B2

    公开(公告)日：2008-03-11

    申请号：US11373497

    申请日：2006-03-10

    申请人： Wenzhong Zhang ,  Julian A. Imes ,  Todd R. Taubert ,  Timothy L. Ricke ,  Theodore G. Angelo

    发明人： Wenzhong Zhang ,  Julian A. Imes ,  Todd R. Taubert ,  Timothy L. Ricke ,  Theodore G. Angelo

    IPC分类号： F01N3/00

    CPC分类号： F01N3/0231 ,  B01D53/9459 ,  B01D2255/102 ,  B01D2255/50 ,  B01D2255/915 ,  B01D2258/012 ,  F01N3/035 ,  F01N13/009 ,  F01N13/0093 ,  F01N2250/02 ,  F01N2330/02 ,  F01N2330/12 ,  F01N2330/325 ,  F01N2330/38 ,  F01N2330/42

    摘要： A diesel exhaust treatment system is disclosed that includes first and second diesel particulate reduction devices. The first diesel particulate reduction device is located upstream in the exhaust flow and contains an oxidation catalyst coating. The second particulate reduction device is located downstream from the first particulate reduction device and is generally non-catalyzed or lightly catalyzed. Each particulate reduction device comprises a flow-through fabric-type filtration media with substantial internal turbulence. As exhaust gas passes through the catalyzed upstream particulate reduction device, nitric oxide (NO) is oxidized to form nitrogen dioxide (NO2), a portion of which interacts with the particulate trapped within the upstream diesel particulate reduction device to regenerate the upstream device. A remaining portion of exhaust gas containing NO2 enters the downstream diesel particulate reduction device, where an additional portion interacts with the trapped particulate to regenerate the device. The relative volume weighted efficiency of the upstream particulate reduction device and of the downstream particulate reduction device are selected to optimize the overall system particle capture efficiency and backpressure, as well as to balance the amount of NO2 made with the amount of NO2 consumed so as to minimize NO2 emissions.

    摘要翻译： 公开了一种包括第一和第二柴油颗粒减少装置的柴油机排气处理系统。 第一柴油颗粒减少装置位于废气流的上游并且包含氧化催化剂涂层。 第二颗粒减少装置位于第一颗粒还原装置的下游，并且通常是非催化的或轻微的催化的。 每个颗粒还原装置包括具有实质内部湍流的流通织物型过滤介质。 当废气通过催化的上游颗粒还原装置时，一氧化氮（NO）被氧化以形成二氧化氮（NO 2 H 2），其一部分与捕获在上游柴油颗粒还原物内的颗粒相互作用 设备重新生成上游设备。 含有NO 2 N 2的排气的剩余部分进入下游柴油颗粒还原装置，其中附加部分与捕获的颗粒相互作用以再生装置。 选择上游颗粒还原装置和下游颗粒还原装置的相对体积加权效率以优化整个系统颗粒捕获效率和背压，以及平衡由下列颗粒还原装置制备的NO 2 2 / 消耗的NO 2量的量以使NO 2排放最小化。

    Method of prediction of NOx mass flow in exhaust
    7.
    发明授权
    Method of prediction of NOx mass flow in exhaust 失效
    排气中NOx质量流量预测方法

    公开(公告)号：US07155331B1

    公开(公告)日：2006-12-26

    申请号：US11012075

    申请日：2004-12-14

    申请人： Wenzhong Zhang ,  Theodore G. Angelo

    发明人： Wenzhong Zhang ,  Theodore G. Angelo

    IPC分类号： F01N3/00 ,  G06F17/00

    CPC分类号： F01N3/206 ,  F01N3/0821 ,  Y02T10/24

    摘要： Methods for estimating the mass flow rate of NOx in an exhaust stream by correlating the level of NOx to an engine parameter. The level of NOx can be estimated as a function of engine power, of intake pressure, of exhaust temperature, as a function of the percentage of O2 in the exhaust stream, or as a combination of any of these. Once the level of NOx is approximately known, the exhaust system of the engine system can be modified to improve the removal efficiency of NOx and exhaust particulate matter from the exhaust stream. These methods for estimating the NOx mass flow rate can be used for an exhaust configuration that includes a lean NOx catalyst (LNC), a selective catalytic reduction (SCR) catalyst, or a lean NOx trap (LNT). A particulate filter can be present in the exhaust configuration.

    摘要翻译： 通过将NOx水平与发动机参数相关联来估计排气流中的NOx的质量流量的方法。 作为排气流中的O 2％的百分比的函数，可以将NOx的水平作为发动机功率，进气压力，排气温度的函数来估计，或作为任何 这些。 一旦NOx的水平大致已知，则可以修改发动机系统的排气系统，以提高NOx的排出效率和从排气流排出颗粒物质。 用于估计NOx质量流量的这些方法可以用于包括贫NOx催化剂（LNC），选择性催化还原（SCR）催化剂或稀NOx捕集器（LNT）的排气构造。 排气构造中可以存在微粒过滤器。