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    Optimal fuel profiles
    3.
    发明授权
    Optimal fuel profiles 失效
    最佳燃油曲线

    公开(公告)号：US07624570B2

    公开(公告)日：2009-12-01

    申请号：US11494372

    申请日：2006-07-27

    申请人： Johannes Walter Reuter ,  Subbaraya Radhamohan ,  Dmitry Arie Shamis ,  Christian Thomas Chimner

    发明人： Johannes Walter Reuter ,  Subbaraya Radhamohan ,  Dmitry Arie Shamis ,  Christian Thomas Chimner

    IPC分类号： F01N3/00

    CPC分类号： F01N3/0842 ,  B01D53/90 ,  B01D53/9409 ,  B01D53/9495 ,  B01D2251/2062 ,  B01D2251/208 ,  B01D2258/012 ,  F01N3/0821 ,  F01N3/0871 ,  F01N13/0097 ,  F01N13/02 ,  F01N2250/12 ,  F01N2570/14 ,  F01N2610/04 ,  F02D41/0275 ,  Y02A50/2325 ,  Y02T10/24

    摘要： A method is provided for regenerating a LNT in a diesel engine exhaust aftertreatment system. Typically, the aftertreatment system comprises a fuel reformer, a LNT, and a SCR catalyst in that order. Over the course of the regeneration, the concentration or flow rate of syn gas is increased, peaked, and then reduced. Preferably, the syn gas concentration or flow rate and the fuel reformer temperature are simultaneously controlled using at least a fuel injector and an engine intake air throttle. The pattern of increasing the syn gas concentration or flow rate during a first part of the regeneration and decreasing the syn gas concentration of flow rate in a latter part of the regeneration reduces the fuel penalty for the regeneration and improves the ammonia production rate as compared to a system in which the syn gas concentration or flow rate is essentially constant throughout the regeneration.

    摘要翻译： 提供了一种用于在柴油发动机排气后处理系统中再生LNT的方法。 通常，后处理系统依次包括燃料重整器，LNT和SCR催化剂。 在再生过程中，合成气的浓度或流量增加，峰值，然后降低。 优选地，使用至少燃料喷射器和发动机进气节流阀同时控制合成气浓度或流量和燃料重整器温度。 在再生的第一部分中增加合成气体浓度或流量的模式，并且在再生后期部分降低合成气体流速浓度降低了再生的燃料损失，并且提高了氨生产率，与 其中合成气浓度或流速在整个再生过程中基本上恒定的系统。

    Optimal fuel profiles
    4.
    发明申请
    Optimal fuel profiles 失效
    最佳燃油曲线

    公开(公告)号：US20080022664A1

    公开(公告)日：2008-01-31

    申请号：US11494372

    申请日：2006-07-27

    申请人： Johannes Walter Reuter ,  Subbaraya Radhamohan ,  Dmitry Arie Shamis ,  Christian Thomas Chimner

    发明人： Johannes Walter Reuter ,  Subbaraya Radhamohan ,  Dmitry Arie Shamis ,  Christian Thomas Chimner

    IPC分类号： F01N3/00 ,  F01N3/10

    CPC分类号： F01N3/0842 ,  B01D53/90 ,  B01D53/9409 ,  B01D53/9495 ,  B01D2251/2062 ,  B01D2251/208 ,  B01D2258/012 ,  F01N3/0821 ,  F01N3/0871 ,  F01N13/0097 ,  F01N13/02 ,  F01N2250/12 ,  F01N2570/14 ,  F01N2610/04 ,  F02D41/0275 ,  Y02A50/2325 ,  Y02T10/24

    摘要： A method is provided for regenerating a LNT in a diesel engine exhaust aftertreatment system. Typically, the aftertreatment system comprises a fuel reformer, a LNT, and a SCR catalyst in that order. Over the course of the regeneration, the concentration or flow rate of syn gas is increased, peaked, and then reduced. Preferably, the syn gas concentration or flow rate and the fuel reformer temperature are simultaneously controlled using at least a fuel injector and an engine intake air throttle. The pattern of increasing the syn gas concentration or flow rate during a first part of the regeneration and decreasing the syn gas concentration of flow rate in a latter part of the regeneration reduces the fuel penalty for the regeneration and improves the ammonia production rate as compared to a system in which the syn gas concentration or flow rate is essentially constant throughout the regeneration.

    摘要翻译： 提供了一种用于在柴油发动机排气后处理系统中再生LNT的方法。 通常，后处理系统依次包括燃料重整器，LNT和SCR催化剂。 在再生过程中，合成气的浓度或流量增加，峰值，然后降低。 优选地，使用至少燃料喷射器和发动机进气节流阀同时控制合成气浓度或流量和燃料重整器温度。 在再生的第一部分中增加合成气体浓度或流量的模式，并且在再生后期部分降低合成气体流速浓度降低了再生的燃料损失，并且提高了氨生产率，与 其中合成气浓度或流速在整个再生过程中基本上恒定的系统。

    Strategy for scheduling LNT regeneration
    5.
    发明申请
    Strategy for scheduling LNT regeneration 审中-公开
    调度LNT再生的策略

    公开(公告)号：US20080314022A1

    公开(公告)日：2008-12-25

    申请号：US11820332

    申请日：2007-06-19

    申请人： Johannes Walter Reuter ,  Karen Evelyn Bevan ,  Christian Thomas Chimner

    发明人： Johannes Walter Reuter ,  Karen Evelyn Bevan ,  Christian Thomas Chimner

    IPC分类号： F01N3/36

    CPC分类号： F01N3/0871 ,  F01N3/0842 ,  F01N3/2066 ,  F01N13/009 ,  F01N2240/30 ,  F01N2560/026 ,  F01N2560/06 ,  F01N2560/14 ,  F01N2610/03 ,  F01N2900/08 ,  F02D41/0275 ,  F02D41/146 ,  F02D2200/0806 ,  Y02T10/24

    摘要： A lean NOX trap is a diesel exhaust aftertreatment system is selectively denitrated when a measure relating to NOX loading, remaining NOX storage capacity, or performance of the exhaust aftertreatment system or a portion thereof comprising the lean NOX trap reaches a critical value. The critical value is determined based in part on conduciveness of current conditions to regenerating the lean NOX trap. Accordingly, denitration is scheduled based on a balance between the urgency of the need to regenerate and conduciveness of current conditions to regeneration. The stopping point for regeneration can also be selected based on conduciveness of current conditions to regeneration. The method maintains exhaust aftertreatment performance while reducing regeneration fuel penalty.

    摘要翻译： 贫NOX捕集器是当与NOX负载，剩余NO x储存容量或废气后处理系统的性能或其包含贫NOx捕集器的部分的测量值相关的措施达到临界值时，柴油机废气后处理系统被选择性脱硝。 临界值部分取决于当前条件对再生贫NOx排放的诱导性。 因此，根据需要再生的紧迫性和目前的再生条件的有利条件之间的平衡来安排脱硝。 还可以根据目前的再生条件的有利条件来选择再生停止点。 该方法维持排气后处理性能，同时降低再生燃料损失。

    Method for controlled DPF regeneration
    8.
    发明申请
    Method for controlled DPF regeneration 审中-公开
    受控DPF再生方法

    公开(公告)号：US20080022660A1

    公开(公告)日：2008-01-31

    申请号：US11490886

    申请日：2006-07-21

    申请人： Johannes Walter Reuter ,  Dmitry Arie Shamis ,  James Edward McCarthy

    发明人： Johannes Walter Reuter ,  Dmitry Arie Shamis ,  James Edward McCarthy

    IPC分类号： F01N3/00

    CPC分类号： F01N3/0253 ,  B01D53/9454 ,  B01D53/9495 ,  B01D2251/208 ,  B01D2258/012 ,  F01N13/0097 ,  F01N2240/28 ,  F01N2240/30 ,  F01N2610/03 ,  F02D41/0275 ,  F02D41/029 ,  Y02A50/2324 ,  Y02T10/22

    摘要： One of the inventors' concepts relates to controlling a temperature of a diesel engine exhaust aftertreatment device, such as a DPF or a fuel reformer, in which combustion is taking place. The concept is to inject reductant to combust in an upstream device, thereby removing oxygen in the exhaust and limiting combustion in the downstream device. The same total amount of heat may be generated, but the distribution is different and limits temperatures in the downstream device. The temperature limiting effect may be through one or more of the thermal storage capacity of the upstream device, the additional heat loss to the surroundings due to higher temperatures upstream in the exhaust system, or the benefit of a more uniform distribution of heat in the downstream device, which mitigates local hot spots. This concept may be used in a temperature control system.

    摘要翻译： 本发明人的概念之一涉及控制燃烧发生的柴油发动机排气后处理装置（例如DPF或燃料重整器）的温度。 该概念是在上游装置中注入还原剂燃烧，从而去除排气中的氧气并限制下游装置中的燃烧。 可能产生相同的总热量，但是分布不同并限制了下游装置中的温度。 温度限制效应可以通过上游装置的一个或多个蓄热能力，由于排气系统中上游的较高温度对周围环境造成的额外的热损失，或下游的更均匀的热分布的益处 设备，减轻了当地的热点。 这个概念可以用在温度控制系统中。

    Coupled DPF regeneration and LNT desulfation
    9.
    发明申请
    Coupled DPF regeneration and LNT desulfation 审中-公开
    联合DPF再生和LNT脱硫

    公开(公告)号：US20080016852A1

    公开(公告)日：2008-01-24

    申请号：US11490913

    申请日：2006-07-21

    申请人： Dmitry Arie Shamis ,  James Edward McCarthy ,  Johannes Walter Reuter ,  Jiyang Yan

    发明人： Dmitry Arie Shamis ,  James Edward McCarthy ,  Johannes Walter Reuter ,  Jiyang Yan

    IPC分类号： F01N3/00

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

    摘要： A diesel engine exhaust aftertreatment system including a DPF and a LNT in that order is operated with simultaneous soot combustion and LNT desulfation. When a control signal to desulfate the LNT is generated, the DPF is heated to ignite combustion of trapped soot. As the trapped soot is combusting in the DPF, reductant is injected downstream of the DPF, but upstream of the LNT at a rate that leaves the exhaust rich, whereby the LNT undergoes desulfation. Soot combustion reduces the fuel penalty for desulfation by removing oxygen from the exhaust. When a reformer is configured upstream of the LNT, soot combustion helps stabilize the reformer operation. In one embodiment, there are two fuel injectors; one upstream of the DPF and one between the DPF and the fuel reformer. Methods are provided for using this type of configuration to operate the reformer when the DPF is not being regenerated.

    摘要翻译： 包括DPF和LNT的柴油发动机排气后处理系统按照同时的烟灰燃烧和LNT脱硫来操作。 当产生对硫酸盐脱盐的控制信号时，加热DPF以点燃被捕获的烟灰的燃烧。 当被捕获的烟灰在DPF中燃烧时，还原剂被注入到DPF的下游，而在LNT的上游以使废气富集的速率被注入，由此LNT进行脱硫。 煤烟燃烧通过从排气中除去氧气来减少用于脱硫的燃料损失。 当重整器配置在LNT的上游时，烟灰燃烧有助于稳定重整器操作。 在一个实施例中，有两个燃料喷射器; DPF的一个上游，DPF和燃料重整器之间。 提供了当DPF不被再生时使用这种配置来操作重整器的方法。

    System to reduce engine exhaust oxygen using exhaust hydrocarbons and a catalyst positioned upstream of a fuel reformer-LNT system
    10.
    发明申请
    System to reduce engine exhaust oxygen using exhaust hydrocarbons and a catalyst positioned upstream of a fuel reformer-LNT system 审中-公开
    使用排气烃和位于燃料重整器-LNT系统上游的催化剂来减少发动机排出氧气的系统

    公开(公告)号：US20080016851A1

    公开(公告)日：2008-01-24

    申请号：US11490912

    申请日：2006-07-21

    申请人： James Edward McCarthy ,  Jiyang Yan ,  Johannes Walter Reuter ,  Dmitry Arie Shamis

    发明人： James Edward McCarthy ,  Jiyang Yan ,  Johannes Walter Reuter ,  Dmitry Arie Shamis

    IPC分类号： F01N5/04 ,  F01N3/00

    CPC分类号： F01N3/206 ,  F01N3/0821 ,  F01N2250/14 ,  F01N2340/06 ,  Y02A50/2325

    摘要： One of the inventors' concepts relates to a power generation system, comprising a diesel engine and an exhaust system. The exhaust system comprises a first oxidation catalyst, a fuel reformer, and a LNT. A fuel injector is configured to inject fuel downstream of the oxidation catalyst, but upstream of the reformer. Preferably, the first oxidation catalyst is located near the engine. The first oxidation catalyst can extend the range of exhaust temperatures at which the aftertreatment devices operate by raising the temperature through reactions with residual hydrocarbons in the exhaust. The first oxidation catalyst also stabilizes the reformer operation by reducing the exhaust oxygen concentration. In a preferred embodiment, the engine operation is changed for LNT regenerations to increase the hydrocarbon content of the exhaust.

    摘要翻译： 本发明人的概念之一涉及包括柴油发动机和排气系统的发电系统。 排气系统包括第一氧化催化剂，燃料重整器和LNT。 燃料喷射器构造成在氧化催化剂下游但在重整器的上游喷射燃料。 优选地，第一氧化催化剂位于发动机附近。 第一氧化催化剂可以通过与废气中的残余烃反应而升高温度来延长后处理装置的排气温度范围。 第一氧化催化剂还通过降低排气氧浓度来稳定重整器操作。 在优选实施例中，改变发动机操作以进行LNT再生以增加排气的烃含量。