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1.发明申请公开(公告)号：US20080114527A1
公开(公告)日：2008-05-15
申请号：US11599577
申请日：2006-11-14
IPC分类号： F02D45/00
CPC分类号： F02D41/064 , F02D41/2422 , F02D2200/0414
摘要： A method and system for repeatable diesel engine starts during a wide range of conditions that decouples fueling requirements during engine starting and normal engine operation.
摘要翻译： 一种可重复柴油发动机的方法和系统，可在发动机启动和正常发动机运行期间解除加油要求的广泛条件下启动。
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公开(公告)号：US20080245058A1
公开(公告)日：2008-10-09
申请号：US11656194
申请日：2007-01-22
申请人： Douglas Ernst Boddy , Mark Louis Dell'Eva , Eric O. Barrows , James Edward McCarthy , John Robert Barla
发明人： Douglas Ernst Boddy , Mark Louis Dell'Eva , Eric O. Barrows , James Edward McCarthy , John Robert Barla
CPC分类号： F01N3/36 , F01N9/00 , F01N11/002 , F01N2240/30 , F01N2550/05 , F01N2560/08 , F01N2610/03 , F01N2610/14 , F01N2610/1453 , F01N2610/1473 , F02D2200/0602 , Y02T10/20 , Y02T10/47
摘要： An exhaust line fuel injection system and associated methods of operation and control are disclosed. The fuel passes through a regulating valve connected to a pressurized fuel source and an outlet connected to an exhaust system fuel supply line. The exhaust system fuel supply line is connected to a nozzle, which generally comprises a check-valve and is configured to inject the fuel into the exhaust line. Using a pressure measuring device, an indication of the exhaust system fuel supply line pressure is obtained. A controller provides control over the flow regulating valve using feedback from the pressure indication and a predetermined relationship between the flow rate through the nozzle and one of the exhaust system fuel supply line pressure and the pressure drop across the nozzle. The method can be implemented with a single pressure measuring device. The same pressure measurements, especially their frequency spectrum, can be used to detect system faults.
摘要翻译： 公开了一种排气管路燃料喷射系统及相关操作和控制方法。 燃料通过连接到加压燃料源的调节阀和连接到排气系统燃料供应管线的出口。 排气系统燃料供给管线连接到喷嘴，喷嘴通常包括止回阀，并被配置为将燃料喷射到排气管线中。 使用压力测量装置，获得排气系统燃料供应管路压力的指示。 控制器使用来自压力指示的反馈以及通过喷嘴的流量与排气系统燃料供给管线压力和喷嘴两端的压降之间的预定关系来提供对流量调节阀的控制。 该方法可以用单个压力测量装置来实现。 相同的压力测量，特别是它们的频谱，可用于检测系统故障。
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公开(公告)号：US20080006025A1
公开(公告)日：2008-01-10
申请号：US11481635
申请日：2006-07-06
CPC分类号： F02D41/0275 , F01N3/0253 , F01N3/0814 , F01N3/0842 , F01N3/0871 , F01N3/106 , F01N3/2033 , F01N3/2066 , F01N3/2073 , F01N9/00 , F01N11/002 , F01N13/0097 , F01N2240/30 , F01N2560/026 , F01N2560/06 , F01N2610/03 , F02D41/405 , Y02A50/2325 , Y02T10/24 , Y02T10/26 , Y02T10/47
摘要： A vehicle is provided with a diesel engine, an exhaust treatment system including a LNT, and a controller configured to control the provision of a reductant to the exhaust for regenerating the LNT. The controller selectively provides the reductant to the exhaust based in part on a measure of whether the engine is undergoing a change in operating state. Preferably, the measure indicates if the engine is undergoing a speed or torque increase. During these types of transients, ideal conditions for LNT regeneration often occur. Ideal conditions include low exhaust oxygen concentrations combined with relatively low exhaust flow rates. Regenerating preferentially when these ideal conditions occur reduces the fuel penalty associated with LNT regeneration. These conditions also simplify regulating LNT and reformer temperatures. In a related concept, the transient is artificially created.
摘要翻译： 车辆设置有柴油发动机，包括LNT的排气处理系统和被配置为控制向废气提供还原剂以再生LNT的控制器。 控制器部分地基于对发动机是否正在经历操作状态的改变的度量，选择性地将还原剂提供给排气。 优选地，该测量指示发动机是否正在经历速度或转矩增加。 在这些类型的瞬变期间，经常发生LNT再生的理想条件。 理想的条件包括低排放氧浓度和较低排气流速。 当这些理想条件发生时优先重新产生减少与LNT再生相关的燃料损失。 这些条件也简化了调节LNT和重整器温度。 在相关概念中，人为地创造了瞬态。
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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：US20080168763A1
公开(公告)日：2008-07-17
申请号：US11653745
申请日：2007-01-16
IPC分类号： F01N3/023
CPC分类号： F01N3/0814 , B01D53/9418 , B01D53/9422 , B01D53/9477 , B01D2251/208 , B01D2255/1025 , B01D2255/202 , B01D2255/204 , B01D2255/91 , B01D2255/911 , B01D2258/012 , F01N3/0842 , F01N3/0878 , F01N3/0885 , F01N3/2073 , F01N13/009 , F01N13/011 , F01N2240/30 , F01N2610/03 , Y02A50/2325 , Y02T10/24
摘要： Rhodium utilization in LNT/SCR-based exhaust aftertreatment systems for medium and heavy duty trucks is reduced by operating inline fuel reformers in a certain manner. The fuel processors are operated at steam reforming temperatures to produce a reformate-containing exhaust having a hydrogen to CO ratio of at least about 3:2 or at least about 3% hydrogen, This generally involves operating the fuel reformers at temperatures from about 500 to about 625° C. and with an overall fuel to air ratio from about 1.10 to about 1.40. In this manner, regeneration can be efficiently carried out while limiting the catalyst loading of the fuel processors to no more than about 1.0 grams rhodium per liter maximum displacement of the diesel engine and the catalyst loading of the LNTs to no more than about 0.50 grams rhodium per liter maximum displacement of the diesel engine.
摘要翻译： 通过以一定的方式运行直列式燃料重整器，减少了中型和重型卡车的LNT / SCR排气后处理系统中的铑利用。 燃料处理器在蒸汽重整温度下运行以产生具有至少约3:2或至少约3％氢的氢至CO比的重整油含量排气。这通常涉及在约500至 约625℃，总燃料空气比约为1.10至约1.40。 以这种方式，可以有效地进行再生，同时将燃料处理器的催化剂负载限制在不超过约1.0克铑/升柴油发动机的最大排量和催化剂负载量至不超过约0.50克的铑 每升最大排量的柴油发动机。
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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。
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7.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。
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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。
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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。
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