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1.发明授权公开(公告)号：US07980064B2
公开(公告)日：2011-07-19
申请号：US11820315
申请日：2007-06-19
申请人： Dmitry Arie Shamis , James Edward McCarthy, Jr. , Johannes Walter Reuter , Karen Evelyn Bevan , Christian Thomas Chimner
发明人： Dmitry Arie Shamis , James Edward McCarthy, Jr. , Johannes Walter Reuter , Karen Evelyn Bevan , Christian Thomas Chimner
CPC分类号： F01N3/2066 , F01N3/0842 , F01N3/0871 , F01N13/0097 , F01N2240/30 , F01N2560/026 , F01N2610/03 , F01N2900/08 , F02D41/0275 , F02D2200/1012 , F02D2250/36 , Y02T10/24
摘要： A lean NOx trap is a diesel exhaust aftertreatment system is selectively denitrated based on a measure relating to the state and/or the performance of the exhaust aftertreatment system, or a portion thereof comprising the lean NOx trap, reaching a critical value. The critical value is varied according to the demands currently being place on the exhaust aftertreatment system. In one embodiment, the critical value is set based on engine speed-load information. The method regenerates more frequently when exhaust aftertreatment demands are high and less frequently when demands are low. The method improves aftertreatment performance while reducing aftertreatment fuel penalty.
摘要翻译： 贫NOx捕集器是基于与排气后处理系统的状态和/或性能相关的措施或其包含贫NOx捕集器的部分达到临界值的柴油机排气后处理系统进行选择性脱硝。 临界值根据排气后处理系统当前的要求而有所不同。 在一个实施例中，临界值基于发动机转速负载信息来设定。 当废气后处理需求高时，该方法更频繁地再生，当需求低时，该方法不太频繁。 该方法提高后处理性能，同时降低后处理燃料处罚。
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公开(公告)号：US20080314022A1
公开(公告)日：2008-12-25
申请号：US11820332
申请日：2007-06-19
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。
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3.发明申请公开(公告)号：US20080314031A1
公开(公告)日：2008-12-25
申请号：US11820315
申请日：2007-06-19
申请人： Dmitry Arie Shamis , James Edward McCarthy, JR. , Johannes Walter Reuter , Karen Evelyn Bevan , Christian Thomas Chimner
发明人： Dmitry Arie Shamis , James Edward McCarthy, JR. , Johannes Walter Reuter , Karen Evelyn Bevan , Christian Thomas Chimner
IPC分类号： F01N3/18
CPC分类号： F01N3/2066 , F01N3/0842 , F01N3/0871 , F01N13/0097 , F01N2240/30 , F01N2560/026 , F01N2610/03 , F01N2900/08 , F02D41/0275 , F02D2200/1012 , F02D2250/36 , Y02T10/24
摘要： A lean NOX trap is a diesel exhaust aftertreatment system is selectively denitrated based on a measure relating to the state and/or the performance of the exhaust aftertreatment system, or a portion thereof comprising the lean NOX trap, reaching a critical value. The critical value is varied according to the demands currently being place on the exhaust aftertreatment system. In one embodiment, the critical value is set based on engine speed-load information. The method regenerates more frequently when exhaust aftertreatment demands are high and less frequently when demands are low. The method improves aftertreatment performance while reducing aftertreatment fuel penalty.
摘要翻译： 贫NOX捕集器是基于与排气后处理系统的状态和/或性能相关的措施或其包含贫NOX捕集器的部分达到临界值的柴油排气后处理系统进行选择性脱硝。 临界值根据排气后处理系统当前的要求而有所不同。 在一个实施例中，临界值基于发动机转速负载信息来设定。 当废气后处理需求高时，该方法更频繁地再生，当需求低时，该方法不太频繁。 该方法提高后处理性能，同时降低后处理燃料处罚。
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公开(公告)号：US07849678B2
公开(公告)日：2010-12-14
申请号：US11799252
申请日：2007-05-01
IPC分类号： F01N3/00
CPC分类号： F01N3/0885 , F01N3/021 , F01N3/0835 , F01N3/0842 , F01N3/0864 , F01N3/0871 , F01N3/106 , F01N3/2066 , F01N13/009 , F01N2240/30 , F01N2560/06 , F01N2570/18 , F01N2610/03 , F02D2200/0818 , Y02T10/24
摘要： The inventors' concept relates to controlling a power generation system having an exhaust aftertreatment system comprising a fuel reformer and an LNT in series. Over the course of a desulfation, a fuel injection upstream of the fuel reformer is pulsed to create alternating lean and rich phases and control the LNT temperature. The LNT temperature is controlled by manipulating a minimum temperature for the fuel reformer at the end of the lean phase, a length of the lean phase, or a pulse frequency. Preferably, the rich phases end when the fuel reformer reaches a predetermined maximum temperature. The method is effective in regulating the fuel reformer temperature while accurately controlling the LNT temperature.
摘要翻译： 本发明人的概念涉及控制具有包括燃料重整器和LNT的排气后处理系统的发电系统。 在脱硫过程中，燃料重整器上游的燃料喷射被脉冲以产生交替的稀相和富相，并控制LNT温度。 LNT温度通过在稀相末端，稀相的长度或脉冲频率处理燃料重整器的最低温度来控制。 优选地，当燃料重整器达到预定最大温度时，富相结束。 该方法在精确控制LNT温度的同时有效调节燃料重整器温度。
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公开(公告)号：US20080022664A1
公开(公告)日：2008-01-31
申请号：US11494372
申请日：2006-07-27
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。
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公开(公告)号：US07624570B2
公开(公告)日：2009-12-01
申请号：US11494372
申请日：2006-07-27
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。
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公开(公告)号：US20110185708A1
公开(公告)日：2011-08-04
申请号：US12696685
申请日：2010-01-29
CPC分类号： F01N3/0871 , F01N3/0814 , F01N3/0842 , F01N11/002 , F01N13/0097 , F01N2240/30 , F01N2250/02 , F01N2250/12 , F01N2560/026 , F01N2560/06 , F01N2570/04 , F01N2570/14 , F01N2610/03 , Y02A50/2344 , Y02T10/24 , Y02T10/47
摘要： The exhaust from a diesel-fueled internal combustion engine is treated by a lean NOX trap. The maximum temperature used for desulfating the lean NOX trap is kept relatively lower during early life and progressively increased as the trap ages. Designing for adequate late life performance entails excess capacity during early life. The method utilizes the excess capacity available during early life to slow aging of the trap and thereby extend the trap lifetime. The method facilitates meeting durability requirements for diesel-powered vehicles with exhaust aftertreatment.
摘要翻译： 来自柴油燃料的内燃机的排气由贫NOx排气管理。 用于脱硫贫NOX捕集器的最高温度在早期生活中保持相对较低，并随着捕集器的老化而逐渐增加。 设计足够的晚年生活表现在早期生活中需要过多的能力。 该方法利用早期可用的过剩容量来减缓陷阱的老化，从而延长陷阱寿命。 该方法有助于满足具有排气后处理的柴油动力车辆的耐久性要求。
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公开(公告)号：US08701390B2
公开(公告)日：2014-04-22
申请号：US12953325
申请日：2010-11-23
IPC分类号： F01N3/00
CPC分类号： F01N3/0814 , F01N3/021 , F01N3/0842 , F01N3/0871 , F01N3/2066 , F01N9/00 , F01N13/0097 , F01N2240/30 , F01N2900/1612 , F01N2900/1614 , Y02A50/2325 , Y02T10/47
摘要： A vehicle has an exhaust aftertreatment system including an LNT. The vehicle operates through a series of ignition cycles, deNOX cycles, and deSOX cycles. DeNOX operations begin when the LNT reaches a loading threshold. The applicable threshold depends on operating conditions, such as mean LNT temperature and mean exhaust flow rate. The thresholds are adapted based on NOX removal efficiency data. The data is compared to target values. The target values depend on the operating condition range, but remain fixed while the thresholds are adapted. NOX removal efficiency is measured over intervals corresponding to entire deNOX cycles. The data is sorted into bins according to operating conditions. The adaptations are only made if a bin has several data points accumulated over a minimum interval that is at least one ignition or deSOX cycle, preferably several. The method provides stable adaptations that compensate for aging.
摘要翻译： 车辆具有包括LNT的排气后处理系统。 车辆通过一系列点火循环，脱硝循环和脱硫循环进行操作。 当LNT达到加载阈值时，DeNOX操作开始。 适用的阈值取决于操作条件，如平均LNT温度和平均排气流量。 基于NOX去除效率数据调整阈值。 数据与目标值进行比较。 目标值取决于操作条件范围，但在修改阈值时保持固定。 在对应于整个deNOX循环的间隔上测量NO x去除效率。 根据操作条件将数据分类到箱中。 仅当箱体具有在至少一个点火或脱硫循环（最好几个）的最小间隔上积累的几个数据点时才进行调整。 该方法提供稳定的适应性，以补偿老化。
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公开(公告)号：US20120124967A1
公开(公告)日：2012-05-24
申请号：US12953325
申请日：2010-11-23
IPC分类号： F01N3/18
CPC分类号： F01N3/0814 , F01N3/021 , F01N3/0842 , F01N3/0871 , F01N3/2066 , F01N9/00 , F01N13/0097 , F01N2240/30 , F01N2900/1612 , F01N2900/1614 , Y02A50/2325 , Y02T10/47
摘要： A vehicle has an exhaust aftertreatment system including an LNT. The vehicle operates through a series of ignition cycles, deNOX cycles, and deSOX cycles. DeNOX operations begin when the LNT reaches a loading threshold. The applicable threshold depends on operating conditions, such as mean LNT temperature and mean exhaust flow rate. The thresholds are adapted based on NOX removal efficiency data. The data is compared to target values. The target values depend on the operating condition range, but remain fixed while the thresholds are adapted. NOX removal efficiency is measured over intervals corresponding to entire deNOX cycles. The data is sorted into bins according to operating conditions. The adaptations are only made if a bin has several data points accumulated over a minimum interval that is at least one ignition or deSOX cycle, preferably several. The method provides stable adaptations that compensate for aging.
摘要翻译： 车辆具有包括LNT的排气后处理系统。 车辆通过一系列点火循环，脱硝循环和脱硫循环进行操作。 当LNT达到加载阈值时，DeNOX操作开始。 适用的阈值取决于操作条件，如平均LNT温度和平均排气流量。 基于NOX去除效率数据来调整阈值。 数据与目标值进行比较。 目标值取决于操作条件范围，但在修改阈值时保持固定。 在对应于整个deNOX循环的间隔上测量NO x去除效率。 根据操作条件将数据分类到箱中。 仅当箱体具有在至少一个点火或脱硫循环（最好几个）的最小间隔上积累的几个数据点时进行调整。 该方法提供稳定的适应性，以补偿老化。
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