-
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。
-
公开(公告)号：US20080016849A1
公开(公告)日：2008-01-24
申请号：US11490910
申请日：2006-07-21
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。
-
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。
-
4.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。
-
5.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。
-
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。
-
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。
-
公开(公告)号：US20080016852A1
公开(公告)日：2008-01-24
申请号：US11490913
申请日：2006-07-21
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。
-
9.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
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。
-
公开(公告)号：US20080016850A1
公开(公告)日：2008-01-24
申请号：US11490911
申请日：2006-07-21
IPC分类号： F01N3/00
CPC分类号： F01N3/206 , F01N3/0821 , F01N3/0842 , F01N2250/14 , Y02A50/2325
摘要： A method is provided for operating a diesel engine exhaust aftertreatment system including a DPF and a LNT. The LNT is regenerated as soot is combusting in the DPF. To accomplish this, reductant is injected between the DPF and the LNT during soot combustion, whereby the LNT experiences rich conditions as the DPF experiences lean conditions. Preferably, the DPF is of small size whereby the DPF is heated easily and needs to be regenerated almost as often as the LNT needs to be denitrated. In an exemplary process, DPF regeneration begins in response to a control signal to denitrate the LNT. Preferably, the reductant is diesel fuel and there is a fuel reformer between the DPF and the LNT. Oxygen consumed by soot combustion reduces the fuel penalty for regenerating the LNT and promotes stable reformer operation. Heat generated in the DPF helps warm the fuel reformer.
摘要翻译： 提供了一种用于操作包括DPF和LNT的柴油发动机排气后处理系统的方法。 当烟尘在DPF中燃烧时，LNT再生。 为了实现这一点，在烟灰燃烧期间，还原剂在DPF和LNT之间被注入，由此当DPF经历稀薄的条件时，LNT具有丰富的条件。 优选地，DPF是小尺寸的，由此DPF被容易地加热并且需要再生几乎与LNT需要脱硝的频率一样多。 在示例性过程中，DPF再生是响应于控制信号而开始的，从而使LNT脱硝。 优选地，还原剂是柴油燃料，并且在DPF和LNT之间存在燃料重整器。 煤烟燃烧消耗的氧气可以降低燃料损失，从而再生LNT并促进稳定的重整器运行。 在DPF中产生的热量有助于燃料重整器的温暖。
-
-
-
-
-
-
-
-
-
搜索结果
14 条记录 (耗时 0.034 秒)
