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公开(公告)号：US06735940B2
公开(公告)日：2004-05-18
申请号：US10192910
申请日：2002-07-11
IPC分类号： F01N300
CPC分类号： F01N3/0878 , B01D53/9431 , F01N3/0807 , F01N3/0814 , F01N3/0821 , F01N3/085 , F01N3/0871 , F01N13/011 , F01N2250/14 , F01N2560/026 , F01N2570/04 , F01N2570/14 , F01N2610/03 , Y02A50/2344
摘要： The present invention provides for an NOx adsorber aftertreatment system for internal combustion engines which utilizes adsorber catalysts arranged in parallel. The exhaust flow from the engine is divided in a predetermined ratio between the two catalysts during lean operation (e.g. 50-50). At a predetermined regeneration time (for example, when the adsorber catalyst is 20% full), the exhaust gas flow is reduced through the parallel leg that is to be regenerated (e.g., 20% through the leg to be regenerated, 80% of the flow to the other leg). A quantity of hydrocarbon is injected into the reduced-flow leg in order to make the mixture rich. Since the flow has been reduced in this leg, only a small fraction of the amount of hydrocarbon that would have been required to make the mixture rich during full flow is required. This will result in a substantial reduction in the fuel penalty incurred for regeneration of the adsorber catalyst. Once the leg has been regenerated, the flow distribution between the parallel legs is reversed, and the other catalyst leg is regenerated while the other side (which is now clean) receives the majority of the exhaust flow. Another advantage of the present invention is that since NOx is being stored in one leg while the other leg is being regenerated, the regeneration operation can be performed for a longer period of time, resulting in greater regeneration efficiency. Once both catalyst legs have been regenerated, the exhaust flow is adjusted back to normal (e.g. 50-50) until the catalysts are again ready for regeneration and reduction.
摘要翻译： 本发明提供一种利用并联排列的吸附剂催化剂的内燃机的NOx吸附器后处理系统。 来自发动机的废气流在稀薄运行期间以两个催化剂之间的预定比例被分配（例如50-50）。 在预定的再生时间（例如，当吸附剂催化剂充满20％时），废气流通过待再生的平行腿减少（例如，通过待再生的腿20％，再生的80％ 流向另一条腿）。 为了使混合物富集，将一定数量的烃注入到减流气流中。 由于在这条腿上已经减少了流量，所以只需要在全流量期间使混合物富集所需的碳氢化合物的一小部分。 这将导致吸附剂催化剂再生所引起的燃料损失的显着降低。 一旦腿已被再生，则平行腿之间的流动分布相反，并且另一个催化剂腿被再生，而另一侧（现在是清洁的）接收大部分排气流。 本发明的另一个优点是，由于在另一条腿正在再生的同时，将NOx储存在一条腿上，所以可以进行更长时间的再生操作，从而获得更高的再生效率。 一旦两个催化剂支路已被再生，排气流量将被调整回正常（例如50-50），直到催化剂再次准备再生和还原。
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公开(公告)号：US06745560B2
公开(公告)日：2004-06-08
申请号：US10192969
申请日：2002-07-11
IPC分类号： F01N300
CPC分类号： F01N3/0878 , B01D53/9431 , F01N3/032 , F01N3/0807 , F01N3/0814 , F01N3/0821 , F01N3/085 , F01N3/0871 , F01N13/011 , F01N2250/14 , F01N2570/04 , F01N2570/14 , F01N2610/03
摘要： Exhaust flow from an internal combustion engine is divided in a predetermined ratio between two adsorber catalysts arranged in parallel during lean operation. A regeneration cycle time is predetermined and regeneration is accomplished by injecting hydrocarbons into a catalyst leg having a reduced exhaust flow. Upon regeneration of the catalyst, the exhaust gas flow distribution is reversed and the opposite catalyst is regenerated while the regenerated catalyst bears the brunt of the exhaust flow. The exhaust flow then reverts to a normal (e.g. 50—50) flow distribution until another regeneration cycle is warranted. A catalytic soot filter placed upstream of each adsorber is also regenerated by hydrocarbon injection. The addition of the catalytic soot filter provides more time and surface area for the hydrocarbon to react with the oxygen. Some of the diesel fuel is reformulated into hydrogen and carbon monoxide for superior regeneration.
摘要翻译： 来自内燃机的排气流在稀薄运转期间平行排列的两个吸附剂催化剂之间以预定比例分配。 再生循环时间是预定的，并且通过将烃注入具有减少的排气流量的催化剂支管中来实现再生。 催化剂再生时，排气流量分布相反，相反的催化剂再生，同时再生催化剂首当其冲。 然后排气流回到正常（例如50-50）的流量分布，直到需要另外一个再生循环。 置于每个吸附器上游的催化烟灰过滤器也通过烃注入再生。 催化烟灰过滤器的添加为烃与氧气反应提供了更多的时间和表面积。 一些柴油被重新配制成氢气和一氧化碳，以获得更好的再生。
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公开(公告)号：US06820414B2
公开(公告)日：2004-11-23
申请号：US10193386
申请日：2002-07-11
IPC分类号： F01N300
CPC分类号： F01N3/0885 , F01N3/0807 , F01N3/0814 , F01N3/0821 , F01N3/0842 , F01N3/085 , F01N3/0878 , F01N13/011 , F01N2410/12
摘要： The present invention provides for adsorber catalysts arranged in parallel. The exhaust flow from the engine is divided in a predetermined ratio between the two catalysts during lean operation (e.g. 50-50). At a predetermined regeneration time (for example, when the adsorber catalyst is 20% full), the exhaust gas flow is reduced through the parallel leg that is to be regenerated (e.g. 20-80). A quantity of hydrocarbon is injected into the reduced-flow leg in order to make the mixture rich. Once the leg has been regenerated, the flow distribution between the parallel legs is reversed, and the other catalyst leg is regenerated while the other side (which is now clean) receives the majority of the exhaust flow. Once both catalyst legs have been regenerated, the exhaust flow is adjusted back to normal (e.g. 50-50) until the catalysts are again ready for regeneration and reduction. A catalytic soot filter is positioned downstream from the adsorber. The heat generated by the regenerating adsorber is transferred downstream to the soot filter, thereby heating the soot filter above the temperature required for regeneration. Additionally, any hydrocarbon that slips through the adsorber is burned in the catalytic soot filter, further raising the temperature. Such burning of the hydrocarbon slip in the catalytic soot filter obviates the need for a diesel oxidation catalyst, thereby reducing system cost and package size.
摘要翻译： 本发明提供了平行布置的吸附剂催化剂。 来自发动机的废气流在稀薄运行期间以两个催化剂之间的预定比例被分配（例如50-50）。 在预定的再生时间（例如，当吸附剂催化剂充满20％时），废气流通过待再生的平行腿（例如20-80）而减少。 为了使混合物富集，将一定数量的烃注入到减流气流中。 一旦腿已被再生，则平行腿之间的流动分布相反，并且另一个催化剂腿被再生，而另一侧（现在是清洁的）接收大部分排气流。 一旦两个催化剂支路已被再生，排气流量将被调整回正常（例如50-50），直到催化剂再次准备再生和还原。 催化烟灰过滤器位于吸附器的下游。 由再生吸附器产生的热量向下游传递到烟灰过滤器，从而将烟灰过滤器加热到再生所需的温度以上。 此外，任何滑过吸附器的烃在催化烟尘过滤器中燃烧，进一步升高温度。 催化烟尘过滤器中碳氢化合物滑移的这种燃烧消除了对柴油氧化催化剂的需要，从而降低了系统成本和包装尺寸。
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公开(公告)号：US07117667B2
公开(公告)日：2006-10-10
申请号：US10651055
申请日：2003-08-28
申请人： Rahul Mital , Bradlee J. Stroia , Scott Cole
发明人： Rahul Mital , Bradlee J. Stroia , Scott Cole
IPC分类号： F01N3/00
CPC分类号： F01N3/0871 , B01D53/96 , F01N3/035 , F01N3/0814 , F01N3/0821 , F01N3/0842 , F01N3/085 , F01N3/0878 , F01N3/36 , F01N3/38 , F01N9/00 , F01N13/009 , F01N13/011 , F01N2250/02 , F01N2250/12 , F01N2250/14 , F01N2410/12 , F01N2570/04 , F01N2570/14 , F01N2610/03 , F01N2610/14 , Y02A50/2344 , Y02T10/47
摘要： The present invention provides for an NOx adsorber aftertreatment system for internal combustion engines which utilizes a parallel arrangement of an adsorber catalyst and a bypass. The exhaust flow from the engine is routed through the adsorber during lean operation. At a predetermined regeneration time (for example, when the adsorber catalyst is 20% full), the exhaust gas flow is reduced through the parallel leg that contains the adsorber catalyst to be regenerated (e.g., 20% through the catalyst leg, 80% of the flow to the bypass leg). A quantity of hydrocarbon is injected into the reduced-flow catalyst leg in order to make the mixture rich. Since the flow has been reduced in this leg, only a small fraction of the amount of hydrocarbon that would have been required to make the mixture rich during full flow is required. This will result in a substantial reduction in the fuel penalty incurred for regeneration of the adsorber catalyst. Once the leg has been regenerated, the exhaust flow is switched to flow 100% through the adsorber leg.
摘要翻译： 本发明提供一种利用吸附剂催化剂和旁路的并联排列的内燃机的NOx吸附器后处理系统。 在稀薄运行期间，来自发动机的排气流通过吸附器。 在预定的再生时间（例如，当吸附剂催化剂为20％满时），排气流通过含有待再生的吸附剂催化剂的平行管路（例如，通过催化剂塔的20％，80％ 流向旁路支路）。 为了使混合物富集，将一定量的烃注入减流催化剂载体中。 由于在这条腿上已经减少了流量，所以只需要在全流量期间使混合物富集所需的碳氢化合物的一小部分。 这将导致吸附剂催化剂再生所引起的燃料损失的显着降低。 一旦腿已经被再生，排气流被切换成100％通过吸附器腿。
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5.发明授权公开(公告)号：US07377101B2
公开(公告)日：2008-05-27
申请号：US10778275
申请日：2004-02-13
申请人： Rahul Mital , Bradlee J. Stroia , Robert C. Yu
发明人： Rahul Mital , Bradlee J. Stroia , Robert C. Yu
IPC分类号： F01N3/00
CPC分类号： F01N3/085 , F01N3/0842 , F01N3/0871 , F01N2240/28
摘要： The invention provides a NOx adsorber aftertreatment system for internal combustion engines which utilizes a plasma fuel converter operatively coupled to at least one NOx adsorber to aid in the regeneration of the NOx adsorber. Fuel and engine exhaust is injected into a plasma fuel converter upstream of a NOx absorber producing reductant such as H2, and CO, which are inlet into the NOx absorber. Reductants such as H2 and CO acting along and together help to efficiently regenerate the NOx Adsorber which in turn releases exhausts products such as CO2 and N2. Using the reductants generated by the plasma fuel converter NOx adsorbers, catalytic soot filter, and the like can be regenerated at exhaust temperatures less than 250° C. The plasma fuel converter, NOx adsorber regenerating aftertreatment system of the present invention may be used with any suitable control system.
摘要翻译： 本发明提供一种用于内燃机的NOx吸附器后处理系统，其利用可操作地耦合至少一个NOx吸附器的等离子体燃料转化器来辅助NOx吸附器的再生。 将燃料和发动机排气注入等离子体燃料转化器，该NOx吸收器产生还原剂例如H 2 CO和CO，其进入NOx吸收器。 还原剂如H 2 CO和CO一起作用并且一起有助于有效地再生NOx吸附器，NOx吸附器再次排放产物如CO 2和N 2， SUB>。 使用由等离子体燃料转化器生成的还原剂NOx吸附剂，催化烟灰过滤器等可以在低于250℃的排气温度下再生。本发明的等离子体燃料转化器，NOx吸附剂再生后处理系统可以与任何 合适的控制系统。
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6.发明授权Precat-NOx adsorber exhaust aftertreatment system for internal combustion engines 有权用于内燃机的前驱NOx吸附器排气后处理系统公开(公告)号：US07900441B2
公开(公告)日：2011-03-08
申请号：US10778651
申请日：2004-02-12
IPC分类号： F01N3/00
CPC分类号： F01N9/00 , F01N3/023 , F01N3/035 , F01N3/0814 , F01N3/0821 , F01N3/0842 , F01N3/085 , F01N3/0871 , F01N3/0878 , F01N3/36 , F01N3/38 , F01N13/009 , F01N13/011 , F01N2410/04 , F01N2510/065 , F01N2560/026 , F01N2570/04 , F01N2570/12 , F01N2570/14 , F01N2610/03 , F01N2610/14 , Y02A50/2344 , Y02T10/47
摘要： The invention provides a NOx adsorber aftertreatment system for internal combustion engines which utilizes at least one precat operatively coupled to at least one NOx adsorber to aid in the regeneration of the NOx adsorber. Fuel is injected into a precat located upstream of a NOx absorber producing heat, H2O, and reductants such as CO, HC, and volatile hydrocarbons, which are input into the NOx absorber. The combination of heat, water, and reductants help to efficiently regenerate the NOx Adsorber which in turn releases exhausts products such as CO2 and N2. Regeneration of a NOx adsorber can be performed during periods of reduced exhaust gas flow lowering the fuel penalty associated with NOx adsorber regeneration. The pre-cat, NOx adsorber regenerating aftertreatment system of the present invention may be used with any suitable control system.
摘要翻译： 本发明提供了一种用于内燃机的NOx吸附器后处理系统，其利用至少一个与至少一个NOx吸附器可操作地耦合的预冷器来辅助NOx吸附器的再生。 将燃料注入位于产生热，H 2 O的NO x吸收体的上游的预固化剂和输入到NOx吸收器中的诸如CO，HC和挥发性烃的还原剂。 热，水和还原剂的组合有助于有效地再生NOx吸附器，其又释放诸如CO 2和N 2的产物。 NOx吸收器的再生可以在降低与NOx吸附器再生相关的燃料处罚的废气流量减少期间进行。 本发明的预猫，NOx吸附器再生后处理系统可以与任何合适的控制系统一起使用。
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公开(公告)号：US6045120A
公开(公告)日：2000-04-04
申请号：US5684
申请日：1998-01-13
CPC分类号： F16K1/34 , F02M59/366 , F02M59/466
摘要： A control valve comprising a valve housing including a valve cavity, an inlet means formed in the valve housing for directing fluid into the valve cavity, and an outlet means formed in the valve housing for directing fluid out of the valve cavity. The control valve further includes a valve element mounted for reciprocal movement in the valve cavity between open and closed positions and biased toward the closed position by fluid pressure forces. A valve seat is associated with the valve element which engages the valve seat when in the closed position and permits flow between the valve seat and the valve element when in the open position. A flow force inducing means is positioned adjacent the valve element for redirecting fluid from the inlet means through a predetermined flow path arranged relative to the valve element to cause fluid flow to impact the valve element and create flow induced forces of sufficient magnitude necessary to advantageously counteract the fluid pressure forces.
摘要翻译： 一种控制阀，包括阀壳体，其包括阀腔，形成在阀壳体中用于将流体引导到阀腔中的入口装置，以及形成在阀壳体中用于将流体引导出阀腔的出口装置。 控制阀还包括阀元件，该阀元件安装成用于在打开和关闭位置之间在阀腔中往复运动，并通过流体压力力朝向关闭位置偏置。 阀座与阀元件相关联，当处于关闭位置时，阀元件与阀座接合，并且当处于打开位置时允许阀座和阀元件之间的流动。 流动力诱导装置邻近阀元件定位，用于使来自入口装置的流体经由相对于阀元件布置的预定流动路径重新定向，以使流体流动冲击阀元件，并产生足够大的流动引起的力以有利地抵消 流体压力。
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公开(公告)号：US6029913A
公开(公告)日：2000-02-29
申请号：US144970
申请日：1998-09-01
CPC分类号： F02M61/1806
摘要： A swirl tip injector nozzle housing is provided for a fuel injector which includes a fuel atomization enhancing feature for creating effective fuel atomization and breakup during discharge from the injector. The fuel atomization enhancing feature includes a plurality of curvilinear spray holes having an angle of curvature equal to approximately 90 degrees. Fuel flowing from the inlet of each spray hole to the outlet is induced, by the 90 degree angle of curvature, to flow through a tangential flow path or swirl within the spray hole causing rapid spreading and breakup of the fuel jet spray upon exiting the outlet of the spray hole. The fuel atomization enhancing feature may also include positioning each spray hole so as to extend orthogonally from the interior surface of the fuel cavity to create optimal entry of the fuel into the tangential flow path.
摘要翻译： 为燃料喷射器设置有旋转喷嘴喷嘴壳体，其包括用于在从喷射器排出的过程中产生有效的燃料雾化和分解的燃料雾化增强特征。 燃料雾化增强特征包括具有等于大约90度的曲率角的多个曲线喷雾孔。 通过90度曲率的角度引导从每个喷孔的入口流出到出口的燃料流过喷流孔内的切向流动路径或涡流，导致喷射喷嘴在离开出口时迅速扩散和分解 的喷孔。 燃料雾化增强特征还可以包括定位每个喷射孔，以便从燃料腔的内表面正交地延伸以产生燃料进入切向流动路径的最佳进入。
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公开(公告)号：US20110296817A1
公开(公告)日：2011-12-08
申请号：US13213038
申请日：2011-08-18
申请人： Bradlee J. Stroia , Wei Lu
发明人： Bradlee J. Stroia , Wei Lu
CPC分类号： F01N3/0807 , F01N3/035 , F01N3/106 , F01N11/002 , F01N11/007 , F01N13/009 , F01N2550/00 , F01N2560/025 , F01N2560/06 , F01N2560/14 , F01N2900/0422 , F02D41/1454 , F02D41/222 , F02D41/2441 , F02D41/2454 , F02D41/2474 , Y02T10/20 , Y02T10/47
摘要： One embodiment is a system operable to control entry of an oxygen sensor into a learning mode. Further embodiments, forms, objects, features, advantages, aspects, and benefits shall become apparent from the following description and drawings.
摘要翻译： 一个实施例是可操作以控制氧传感器进入学习模式的系统。 从以下说明和附图，其他实施例，形式，目的，特征，优点，方面和优点将变得显而易见。
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公开(公告)号：US07836687B2
公开(公告)日：2010-11-23
申请号：US12004447
申请日：2007-12-20
申请人： Bradlee J. Stroia , Wole Akinyemi
发明人： Bradlee J. Stroia , Wole Akinyemi
IPC分类号： F01N3/00
CPC分类号： F01N9/002 , F01N3/0231 , F01N3/0821 , F01N2900/0421 , Y02T10/47
摘要： One embodiment is a method including maintaining a count based upon an engine operating condition, determining a soot level based upon a characteristic of a diesel particulate filter, and requesting deSoot based upon the count meeting or exceeding a threshold, or the soot level meeting or exceeding a threshold, or both. Further embodiments, forms, objects, features, advantages, aspects, and benefits shall become apparent from the following description and drawings.
摘要翻译： 一个实施例是一种方法，包括基于发动机操作条件维持计数，基于柴油微粒过滤器的特性确定烟灰水平，并且基于计数会议或超过阈值或者达到或超过的烟尘水平来请求deSoot 阈值或两者。 从以下说明和附图，其他实施例，形式，目的，特征，优点，方面和优点将变得显而易见。
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