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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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2.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：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：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：US08007404B2
公开(公告)日：2011-08-30
申请号：US12001690
申请日：2007-12-12
IPC分类号： F16H59/74
CPC分类号： F02D41/0275 , F01N3/0814 , F01N3/0842 , F01N3/0871 , F01N3/2066 , F01N9/00 , F01N13/009 , F01N13/0097 , F01N2240/30 , F01N2560/026 , F01N2560/06 , F01N2610/03 , F01N2610/146 , F01N2900/0422 , F01N2900/08 , F02D41/023 , Y02T10/24 , Y02T10/47 , Y10T477/663
摘要： Discontinuous torque ratio shifts by a transmission can result in complex transient exhaust conditions that can adversely affect exhaust air-fuel ratio control, which can result in ineffective regeneration. In extreme cases, the result can be irreversible damage to exhaust system components. The inventors' concept is to alter either regeneration scheduling or shift scheduling to avoid shifting while regenerating.
摘要翻译： 通过变速器的不连续转矩比移动可能导致复杂的瞬态排气条件，这可能会对排气空燃比控制产生不利影响，这可能导致无效的再生。 在极端情况下，结果可能会对排气系统组件造成不可逆转的损害。 发明人的概念是改变再生调度或换档调度以避免在再生时移动。
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公开(公告)号：US20100077734A1
公开(公告)日：2010-04-01
申请号：US12632581
申请日：2009-12-07
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。
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公开(公告)号：US20090156358A1
公开(公告)日：2009-06-18
申请号：US12001690
申请日：2007-12-12
CPC分类号： F02D41/0275 , F01N3/0814 , F01N3/0842 , F01N3/0871 , F01N3/2066 , F01N9/00 , F01N13/009 , F01N13/0097 , F01N2240/30 , F01N2560/026 , F01N2560/06 , F01N2610/03 , F01N2610/146 , F01N2900/0422 , F01N2900/08 , F02D41/023 , Y02T10/24 , Y02T10/47 , Y10T477/663
摘要： Discontinuous torque ratio shifts by a transmission can result in complex transient exhaust conditions that can adversely affect exhaust air-fuel ratio control, which can result in ineffective regeneration. In extreme cases, the result can be irreversible damage to exhaust system components. The inventors' concept is to alter either regeneration scheduling or shift scheduling to avoid shifting while regenerating.
摘要翻译： 通过变速器的不连续转矩比移动可能导致复杂的瞬态排气条件，这可能会对排气空燃比控制产生不利影响，这可能导致无效的再生。 在极端情况下，结果可能会对排气系统组件造成不可逆转的损害。 发明人的概念是改变再生调度或换档调度以避免在再生时移动。
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公开(公告)号：US07610751B2
公开(公告)日：2009-11-03
申请号：US11490910
申请日：2006-07-21
IPC分类号： F01N3/00
CPC分类号： F01N3/035 , F01N3/0253 , F01N3/0871 , F01N13/0097 , F01N2240/30 , F01N2610/1453 , Y02A50/2325
摘要： One concept relates to power generation system, comprising a diesel engine, an exhaust manifold, a turbocharger, and an exhaust line in which are configured a fuel reformer and a LNT. A fuel injector is configured to inject fuel into the manifold upstream of the turbine. The high temperatures upstream of the turbine cause the fuel to crack into smaller molecules, releasing heat and providing a boost to the turbocharger. The fuel injected into the manifold also undergoes intense mixing as it passes through the turbocharger. Injecting fuel in this manner provides several benefits for reformer operation. Another concept relates to a manifold fuel injector used to provide fuel for heating a DPF.
摘要翻译： 一个概念涉及发电系统，其包括柴油发动机，排气歧管，涡轮增压器和排气管，其中构成燃料重整器和LNT。 燃料喷射器构造成将燃料喷射到涡轮机上游的歧管中。 涡轮上游的高温使得燃料裂解成更小的分子，释放热量并为涡轮增压器提供增压。 注入歧管的燃料在通过涡轮增压器时也经受强烈的混合。 以这种方式注入燃料为重整器操作提供了几个好处。 另一个概念涉及用于提供用于加热DPF的燃料的歧管燃料喷射器。
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公开(公告)号：US20080022660A1
公开(公告)日：2008-01-31
申请号：US11490886
申请日：2006-07-21
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。
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公开(公告)号：US08209960B2
公开(公告)日：2012-07-03
申请号：US12632581
申请日：2009-12-07
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。
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