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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：US10914229B2
公开(公告)日：2021-02-09
申请号：US13617320
申请日：2012-09-14
摘要： Embodiments for controlling condensate in a charge air cooler are provided. In one example, a charge air cooler comprises an inlet to admit charge air, a plurality of heat exchange passages to remove heat from the charge air, an outlet configured to discharge the charge air from the heat exchange passages to an intake passage upstream of an intake manifold of an engine, and a dispersion element extending at least partially across the outlet.
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公开(公告)号：US08683786B2
公开(公告)日：2014-04-01
申请号：US13615278
申请日：2012-09-13
IPC分类号： F01N3/00
CPC分类号： F01N9/00 , F01N3/023 , F01N3/32 , F01N2560/025 , F01N2560/06 , F02B37/00 , F02D13/0215 , F02D19/0655 , F02D41/0055 , F02D41/029 , F02D41/1439 , F02M26/01 , F02M26/05 , F02M26/06 , F02M26/15 , F02M26/24 , F02M26/46 , F02M26/47 , Y02T10/144 , Y02T10/22 , Y02T10/36 , Y02T10/47
摘要： A method for operating a spark-ignition engine having a three-way catalyst and a particulate filter downstream thereof, comprising: oscillating an exhaust air-fuel ratio entering the particulate filter to generate air-fuel ratio oscillations downstream of the particulate filter, while increasing exhaust temperature; when the downstream oscillations are sufficiently dissipated, enleaning the exhaust air-fuel ratio entering the particulate filter; and reducing the enleanment when an exhaust operating parameter is beyond a threshold amount.
摘要翻译： 一种用于操作具有三元催化剂和其下游的颗粒过滤器的火花点火发动机的方法，包括：使进入所述颗粒过滤器的排气空燃比振荡，以在颗粒过滤器的下游产生空燃比振荡，同时增加 排气温度; 当下游振荡充分消散时，消除进入微粒过滤器的排气空燃比; 并且当排气操作参数超过阈值量时减少净化。
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公开(公告)号：US20140076289A1
公开(公告)日：2014-03-20
申请号：US13617320
申请日：2012-09-14
IPC分类号： F02M31/20
CPC分类号： F02B29/0468 , F02B29/0425 , F02M26/05 , F02M29/04 , F02M35/1038 , F02M35/10393 , Y02T10/146
摘要： Embodiments for controlling condensate in a charge air cooler are provided. In one example, a charge air cooler comprises an inlet to admit charge air, a plurality of heat exchange passages to remove heat from the charge air, an outlet configured to discharge the charge air from the heat exchange passages to an intake passage upstream of an intake manifold of an engine, and a dispersion element extending at least partially across the outlet.
摘要翻译： 提供了用于控制增压空气冷却器中的冷凝物的实施例。 在一个示例中，增压空气冷却器包括入口以允许增压空气，多个热交换通道以从增压空气中除去热量;出口，其构造成将增压空气从热交换通道排出到进气通道的上游 发动机的进气歧管和至少部分地延伸穿过出口延伸的分散元件。
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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：US08516799B2
公开(公告)日：2013-08-27
申请号：US12645809
申请日：2009-12-23
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
IPC分类号： F01N3/00
CPC分类号： F01N3/10 , F01N3/021 , F01N3/2066 , F01N9/00 , F01N2610/02 , F02D41/0007 , F02D41/0055 , F02D41/0065 , F02D41/029 , F02D41/405 , F02M26/08 , F02M26/15 , F02M26/24 , Y02A50/2325 , Y02T10/144 , Y02T10/24 , Y02T10/47
摘要： Methods and systems are provided for controlling an engine in a vehicle, the engine having a turbocharger, and a particulate filter upstream of a turbocharger turbine. In one example, the method comprises, under selected boosted operating conditions, injecting a reductant upstream of the filter during an exhaust stroke to generate an exothermic reaction at the filter.
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公开(公告)号：US20130008162A1
公开(公告)日：2013-01-10
申请号：US13615278
申请日：2012-09-13
CPC分类号： F01N9/00 , F01N3/023 , F01N3/32 , F01N2560/025 , F01N2560/06 , F02B37/00 , F02D13/0215 , F02D19/0655 , F02D41/0055 , F02D41/029 , F02D41/1439 , F02M26/01 , F02M26/05 , F02M26/06 , F02M26/15 , F02M26/24 , F02M26/46 , F02M26/47 , Y02T10/144 , Y02T10/22 , Y02T10/36 , Y02T10/47
摘要： A method for operating a spark-ignition engine having a three-way catalyst and a particulate filter downstream thereof, comprising: oscillating an exhaust air-fuel ratio entering the particulate filter to generate air-fuel ratio oscillations downstream of the particulate filter, while increasing exhaust temperature; when the downstream oscillations are sufficiently dissipated, enleaning the exhaust air-fuel ratio entering the particulate filter; and reducing the enleanment when an exhaust operating parameter is beyond a threshold amount.
摘要翻译： 一种用于操作具有三元催化剂和其下游的颗粒过滤器的火花点火发动机的方法，包括：使进入所述颗粒过滤器的排气空燃比振荡，以在颗粒过滤器的下游产生空燃比振荡，同时增加 排气温度; 当下游振荡充分消散时，消除进入微粒过滤器的排气空燃比; 并且当排气操作参数超过阈值量时减少净化。
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公开(公告)号：US08347611B2
公开(公告)日：2013-01-08
申请号：US12645780
申请日：2009-12-23
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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公开(公告)号：US08347609B2
公开(公告)日：2013-01-08
申请号：US12645826
申请日：2009-12-23
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
IPC分类号： F01N3/00
CPC分类号： F01N3/021 , F01N3/2066 , F01N9/00 , F01N2610/00 , F02D23/00 , F02D41/0007 , F02D41/024 , F02D41/029 , F02D41/1446 , F02D41/405 , F02D2200/0802 , F02M26/05 , F02M26/06 , Y02T10/144 , Y02T10/24 , Y02T10/26 , Y02T10/47
摘要： Methods and systems are provided for operating an engine including an SCR catalyst downstream of an exhaust turbine and a particulate filter upstream of the turbine. In one example, the method comprises, adjusting a turbine wastegate to adjust a catalyst temperature to a desired catalyst temperature.
摘要翻译： 提供了用于操作发动机的方法和系统，所述发动机包括在排气涡轮机下游的SCR催化剂和在涡轮机上游的颗粒过滤器。 在一个示例中，该方法包括：调整涡轮机废气门以将催化剂温度调节至所需催化剂温度。
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