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公开(公告)号：US06679051B1
公开(公告)日：2004-01-20
申请号：US10064626
申请日：2002-07-31
IPC分类号： F01N300
CPC分类号： F01N3/0885 , F01N3/0842 , F01N3/0878 , F01N13/011 , F01N2610/02 , F01N2610/03
摘要： An exhaust valve downstream of a diesel engine splits exhaust gasses between two catalysts. In one position, most of the exhaust gasses go to a first catalyst, and the remaining exhaust gasses, along with injected reductant go to a second catalyst. In a second position, most of the exhaust gasses go to the second catalyst, and the remaining exhaust gasses, along with injected reductant go to the first catalyst. In this way, a reduced cost system is achieved.
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公开(公告)号：US07000383B2
公开(公告)日：2006-02-21
申请号：US10999618
申请日：2004-11-29
IPC分类号： F01N3/00
CPC分类号： F01N3/035 , B01D53/9431 , B01D53/9495 , F01N3/023 , F01N3/2066 , F01N13/009 , F01N2240/16 , F01N2570/10 , F01N2570/12 , F01N2570/14 , F01N2610/03 , F01N2610/08 , F01N2610/10 , F01N2610/107 , F02D41/1475 , Y02A50/2325 , Y02A50/2344 , Y02T10/24
摘要： A method and a system for improved reductant delivery to an exhaust gas aftertreatment device for a lean burn internal combustion engine exhaust are presented. The system includes a heated evaporator unit into which a mixture of reductant and air in injected, wherein the mixture is vaporized and introduced into the exhaust gas aftertreatment device. Introducing the reductant mixed with air into the heated evaporator unit prevents lacquering and soot deposits on the heated element housed inside the unit, and also speeds up the vaporization process due to better reductant distribution thus reducing system response delays and improving conversion efficiency of the exhaust gas aftertreatment device. The reductant delivery system is further improved by adding a catalyst to it, and by preventing the reductant and air mixture from coming into direct contact with the surface of the heating element.
摘要翻译： 提出了一种用于改善还原剂输送到贫燃燃烧内燃机排气废气后处理装置的方法和系统。 该系统包括加热的蒸发器单元，其中注入的还原剂和空气的混合物，其中混合物蒸发并引入废气后处理装置。 将与空气混合的还原剂引入加热的蒸发器单元防止在容纳在单元内的加热元件上的涂漆和烟灰沉积，并且还由于更好的还原剂分布而加速蒸发过程，从而减少系统响应延迟并提高废气的转化效率 后处理装置。 通过向其中加入催化剂，并且通过防止还原剂和空气混合物与加热元件的表面直接接触来进一步改进还原剂递送系统。
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公开(公告)号：US06862879B2
公开(公告)日：2005-03-08
申请号：US10301078
申请日：2002-11-21
CPC分类号： F01N3/208 , B01D53/9431 , B01D53/9495 , F01N3/023 , F01N3/035 , F01N13/009 , F01N2570/12 , F01N2570/14 , F01N2610/03 , F01N2610/08 , F01N2610/10 , F01N2610/146 , F01N2900/08 , F01N2900/14 , Y02A50/2344 , Y02T10/24
摘要： A method for improving NOx conversion efficiency of a lean exhaust gas aftertreatment device by determining an accurate amount of reductant required is presented. The method includes calculating a base reductant injection amount based on a steady state amount of NOx in the engine feedgas and adjusting the base amount to compensate for transient NOx emissions. The method further teaches using an air assist heated reductant delivery system to inject the adjusted base reductant amount into the device, thus further improving NOx conversion efficiency of the device.
摘要翻译： 提出了通过确定所需的精确量的还原剂来提高贫废气后处理装置的NOx转化效率的方法。 该方法包括基于发动机进气中的稳定状态量的NOx计算碱还原剂喷射量，并且调节基础量以补偿瞬态NOx排放。 该方法进一步教导使用空气辅助加热还原剂输送系统将调整的碱还原剂量注入装置中，从而进一步提高装置的NOx转化效率。
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公开(公告)号：US06968680B2
公开(公告)日：2005-11-29
申请号：US10722855
申请日：2003-11-25
CPC分类号： F01N3/0885 , F01N3/0842 , F01N3/0878 , F01N13/011 , F01N2610/02 , F01N2610/03
摘要： An exhaust valve downstream of a diesel engine splits exhaust gasses between two catalysts. In one position, most of the exhaust gasses go to a first catalyst, and the remaining exhaust gasses, along with injected reductant go to a second catalyst. In a second position, most of the exhaust gasses go to the second catalyst, and the remaining exhaust gasses, along with injected reductant go to the first catalyst. In this way, a reduced cost system is achieved.
摘要翻译： 在柴油发动机下游的排气阀在两个催化剂之间分流废气。 在一个位置，大部分废气进入第一催化剂，剩余的废气与注入的还原剂一起进入第二催化剂。 在第二位置，大部分废气进入第二催化剂，剩余的废气与注入的还原剂一起进入第一催化剂。 以这种方式，实现了降低成本的系统。
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公开(公告)号：US20140010744A1
公开(公告)日：2014-01-09
申请号：US13542598
申请日：2012-07-05
IPC分类号： B01D53/94
CPC分类号： F01N3/208 , F01N9/00 , F01N13/02 , F01N2410/00 , F01N2560/023 , F01N2900/1402 , Y02A50/2325 , Y02T10/24 , Y02T10/47
摘要： Methods and systems for improving operation of an SCR are disclosed. In one example, engine hydrocarbon emissions are reduced and/or directed to bypass an SCR so that SCR efficiency can be increased. The methods and systems may reduce NOx emissions of a vehicle via improving SCR efficiency.
摘要翻译： 公开了用于改善SCR操作的方法和系统。 在一个示例中，发动机碳氢化合物排放被减少和/或引导以旁路SCR，从而可以提高SCR效率。 所述方法和系统可以通过提高SCR效率来减少车辆的NOx排放。
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公开(公告)号：US06895747B2
公开(公告)日：2005-05-24
申请号：US10301077
申请日：2002-11-21
CPC分类号： F01N3/2066 , F01N3/2896 , F01N3/32 , F01N13/009 , F01N2240/16 , F01N2240/20 , F01N2240/40 , F01N2250/02 , F01N2370/04 , F01N2570/14 , F01N2610/02 , F01N2610/08 , F01N2610/10 , F01N2610/107 , F01N2610/1453 , F02B2075/125 , Y02T10/123 , Y02T10/24
摘要： A method and a system for improving conversion efficiency of a urea-based SCR catalyst coupled downstream of a diesel or other lean burn engine is presented. The system includes an electrically heated vaporizer unit into which a mixture of reductant and air in injected. The mixture is vaporized in the unit and introduced into the exhaust gas prior to its entering the SCR catalyst. Introducing the reductant mixed with air into the reductant delivery system prevents lacquering and soot deposits on the heated element housed inside the unit, and also speeds up the vaporization process thus reducing system response delays and improving the device conversion efficiency. The reductant delivery system is further improved by adding a hydrolyzing catalyst to it, and by isolating the reductant and air mixture from the heating element.
摘要翻译： 提出了一种用于提高在柴油或其他稀燃燃烧发动机下游耦合的基于尿素的SCR催化剂的转化效率的方法和系统。 该系统包括电加热蒸发器单元，其中注入的还原剂和空气的混合物。 混合物在该单元中蒸发并在其进入SCR催化剂之前被引入废气中。 将与空气混合的还原剂引入还原剂递送系统防止在容纳在单元内的加热元件上的涂漆和烟灰沉积，并且还加速蒸发过程，从而减少系统响应延迟并提高器件转换效率。 通过向其中加入水解催化剂，并通过将还原剂和空气混合物与加热元件分离来进一步改进还原剂递送系统。
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公开(公告)号：US06834498B2
公开(公告)日：2004-12-28
申请号：US10301296
申请日：2002-11-21
IPC分类号： F01N300
CPC分类号： F01N3/035 , B01D53/9431 , B01D53/9495 , F01N3/023 , F01N3/2066 , F01N13/009 , F01N2240/16 , F01N2570/10 , F01N2570/12 , F01N2570/14 , F01N2610/03 , F01N2610/08 , F01N2610/10 , F01N2610/107 , F02D41/1475 , Y02A50/2325 , Y02A50/2344 , Y02T10/24
摘要： A method and a system for improved reductant delivery to an exhaust gas aftertreatment device for a lean burn internal combustion engine exhaust are presented. The system includes a heated evaporator unit into which a mixture of reductant and air in injected, wherein the mixture is vaporized and introduced into the exhaust gas aftertreatment device. Introducing the reductant mixed with air into the heated evaporator unit prevents lacquering and soot deposits on the heated element housed inside the unit, and also speeds up the vaporization process due to better reductant distribution thus reducing system response delays and improving conversion efficiency of the exhaust gas aftertreatment device. The reductant delivery system is further improved by adding a catalyst to it, and by preventing the reductant and air mixture from coming into direct contact with the surface of the heating element.
摘要翻译： 提出了一种用于改善还原剂输送到贫燃燃烧内燃机排气废气后处理装置的方法和系统。 该系统包括加热的蒸发器单元，其中注入的还原剂和空气的混合物，其中混合物蒸发并引入废气后处理装置。 将与空气混合的还原剂引入加热的蒸发器单元防止在容纳在单元内的加热元件上的涂漆和烟灰沉积，并且还由于更好的还原剂分布而加速蒸发过程，从而减少系统响应延迟并提高废气的转化效率 后处理装置。 通过向其中加入催化剂，并且通过防止还原剂和空气混合物与加热元件的表面直接接触来进一步改进还原剂递送系统。
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公开(公告)号：US09964058B2
公开(公告)日：2018-05-08
申请号：US13438740
申请日：2012-04-03
申请人： Eric Kurtz , Paul Joseph Tennison , William Charles Ruona , Waheed Alashe , David A. May , Joshua Putman Styron
发明人： Eric Kurtz , Paul Joseph Tennison , William Charles Ruona , Waheed Alashe , David A. May , Joshua Putman Styron
CPC分类号： F02D41/0235 , F01N3/208 , F01N2610/142 , F01N2900/1814 , F02B39/04 , F02D21/08 , F02D41/0007 , F02D41/005 , F02D41/3836 , F02D41/401 , Y02A50/2325 , Y02T10/24 , Y02T10/44 , Y02T10/47
摘要： Methods and systems for increasing fuel economy of a vehicle including a SCR catalyst are presented. In one example, an amount of EGR provided to an engine is decreased in response to performance of the SCR being within a predetermined range of performance. The methods and systems may increase vehicle fuel economy while vehicle tailpipe emissions are achieved.
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公开(公告)号：US08667780B2
公开(公告)日：2014-03-11
申请号：US13736830
申请日：2013-01-08
申请人： Jeffrey Scott Hepburn , William Charles Ruona , Brien Lloyd Fulton , Gopichandra Surnilla , Eric Matthew Kurtz
发明人： Jeffrey Scott Hepburn , William Charles Ruona , Brien Lloyd Fulton , Gopichandra Surnilla , Eric Matthew Kurtz
CPC分类号： F01N3/035 , F01N3/021 , F01N3/2066 , F01N3/208 , F01N9/00 , F01N2240/20 , F01N2610/02 , F01N2610/14 , F02B37/18 , F02M26/08 , F02M26/15 , F02M26/24 , Y02T10/24 , Y02T10/47
摘要： Methods and systems are provided for operating an engine including an emission control system, the emission control system comprising a catalyst downstream of a turbine of a boosting device and a reductant injector upstream of the turbine. In one example, the method comprises injecting reductant into exhaust upstream of the turbine, mixing the injected reductant with exhaust gas via the turbine, and delivering the mixed reductant to the catalyst.
摘要翻译： 提供了用于操作包括排放控制系统的发动机的方法和系统，所述排放控制系统包括在升压装置的涡轮机下游的催化剂和在涡轮机上游的还原剂喷射器。 在一个实例中，该方法包括将还原剂注入到涡轮机上游的排气口中，通过涡轮将注入的还原剂与废气混合，并将混合的还原剂输送到催化剂。
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10.发明申请SYSTEM AND METHOD FOR INCREASING FUEL ECONOMY OF A VEHICLE INCLUDING A SCR CATALYST 有权增加包括SCR催化剂在内的车辆燃料经济性的系统和方法公开(公告)号：US20130261930A1
公开(公告)日：2013-10-03
申请号：US13438740
申请日：2012-04-03
申请人： Eric Kurtz , Paul Joseph Tennison , William Charles Ruona , Waheed Alashe , David A. May , Joshua Putman Styron
发明人： Eric Kurtz , Paul Joseph Tennison , William Charles Ruona , Waheed Alashe , David A. May , Joshua Putman Styron
CPC分类号： F02D41/0235 , F01N3/208 , F01N2610/142 , F01N2900/1814 , F02B39/04 , F02D21/08 , F02D41/0007 , F02D41/005 , F02D41/3836 , F02D41/401 , Y02A50/2325 , Y02T10/24 , Y02T10/44 , Y02T10/47
摘要： Methods and systems for increasing fuel economy of a vehicle including a SCR catalyst are presented. In one example, an amount of EGR provided to an engine is decreased in response to performance of the SCR being within a predetermined range of performance. The methods and systems may increase vehicle fuel economy while vehicle tailpipe emissions are achieved.
摘要翻译： 提出了包括SCR催化剂在内的用于提高燃料经济性的方法和系统。 在一个示例中，响应于SCR的性能在预定的性能范围内，提供给发动机的EGR量减小。 方法和系统可以提高车辆燃料经济性，同时实现车辆尾气排放。
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