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公开(公告)号：US20110162347A1
公开(公告)日：2011-07-07
申请号：US12847265
申请日：2010-07-30
申请人： Santhoji Rao Katare , Giovanni Cavataio , Douglas Allen Dobson , Gang Guo , Paul M. Laing , William Charles Ruona , Paul Joseph Tennison
发明人： Santhoji Rao Katare , Giovanni Cavataio , Douglas Allen Dobson , Gang Guo , Paul M. Laing , William Charles Ruona , Paul Joseph Tennison
CPC分类号： F01N3/2066 , F01N3/10 , F01N3/106 , F01N13/009 , F01N2610/02 , Y02A50/2325 , Y02T10/24
摘要： A motor-vehicle engine system comprises a first DOC configured to receive exhaust from an engine and an SCR device coupled downstream of the first DOC in a flow direction of the exhaust. The system further comprises a second DOC coupled downstream of the SCR device. The system takes advantage of hydrocarbon sorption in the SCR catalyst that is a function of temperature to enable reduced hydrocarbon emissions via oxidation at the second DOC.
摘要翻译： 机动车辆发动机系统包括构造成从发动机接收排气的第一DOC和在排气的流动方向上连接在第一DOC下游的SCR装置。 该系统还包括耦合在SCR装置下游的第二DOC。 该系统利用SCR催化剂中的烃吸附，其是温度的函数，以通过在第二DOC处的氧化来减少碳氢化合物排放。
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公开(公告)号：US06928806B2
公开(公告)日：2005-08-16
申请号：US10301137
申请日：2002-11-21
申请人： Paul Joseph Tennison , Paul M. Laing , Christine Kay Lambert , Robert Henry Hammerle , William Charles Ruona
发明人： Paul Joseph Tennison , Paul M. Laing , Christine Kay Lambert , Robert Henry Hammerle , William Charles Ruona
CPC分类号： F01N3/035 , B01D53/9431 , B01D53/9495 , F01N3/023 , F01N3/0253 , F01N3/2066 , F01N13/009 , F01N13/0093 , F01N2240/16 , F01N2570/12 , F01N2570/14 , F01N2610/02 , F01N2610/03 , F01N2610/08 , F01N2610/10 , F02D41/1475 , Y02A50/2344 , Y02T10/24
摘要： A system for effective NOx and particulate matter control in a diesel or other lean burn internal combustion engine is presented. The system includes a urea-based SCR catalyst having an oxidation catalyst coupled upstream of it and a particulate filter coupled downstream of the SCR catalyst. This system configuration results in improved NOx conversion due to fast SCR catalyst warm-up and higher operating temperatures. Additionally, placing the particulate filter last in this system configuration reduces tailpipe ammonia emissions as well as prevents any thermal damage to the SCR catalyst due to the particulate filter regeneration.
摘要翻译： 提出了柴油或其他贫燃内燃机中有效的NOx和颗粒物控制系统。 该系统包括具有在其上游耦合的氧化催化剂的尿素SCR催化剂和与SCR催化剂下游相连的颗粒过滤器。 该系统配置导致由于快速SCR催化剂预热和较高的操作温度而改进的NOx转化。 此外，将微粒过滤器置于该系统配置中可以减少尾气氨排放，同时防止颗粒过滤器再生对SCR催化剂造成的任何热损伤。
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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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公开(公告)号：US20120117963A1
公开(公告)日：2012-05-17
申请号：US13351188
申请日：2012-01-16
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： F02M25/07
CPC分类号： F01N9/002 , F01N3/021 , F01N2250/02 , F01N2570/10 , F02B29/0406 , F02D41/0007 , F02D41/0055 , F02D41/029 , F02D2200/0802 , F02M26/05 , F02M26/06 , F02M26/15 , F02M26/23 , Y02A50/2325 , Y02T10/144 , Y02T10/20 , Y02T10/47
摘要： Methods and systems are provided for operating a turbocharged engine including a particulate filter positioned upstream of a turbocharger turbine, a catalyst positioned downstream of the turbine, and an EGR passage coupled between an engine exhaust and engine intake. In one example, the method comprises, diverting exhaust gas from downstream of the filter to the engine intake via the EGR passage, and adjusting an amount of diverted exhaust gas based on filter operating conditions.
摘要翻译： 提供了用于操作涡轮增压发动机的方法和系统，所述涡轮增压发动机包括位于涡轮增压器涡轮机上游的微粒过滤器，位于涡轮机下游的催化剂，以及联接在发动机排气和发动机进气口之间的EGR通道。 在一个示例中，该方法包括：经由EGR通道将废气从过滤器的下游转向发动机进气口，并且基于过滤器操作条件来调节排出的排气量。
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公开(公告)号：US20120023937A1
公开(公告)日：2012-02-02
申请号：US13239137
申请日：2011-09-21
IPC分类号： F02B33/44
CPC分类号： F02D41/005 , F02B29/0406 , F02B37/007 , F02D9/02 , F02D41/0065 , F02D41/0077 , F02D2041/0017 , F02M26/05 , F02M26/06 , F02M26/08 , F02M26/24 , F02M26/28 , F02M26/38 , F02M26/42 , Y02T10/47
摘要： A method is provided for controlling EGR flow in turbocharged engine. The method comprises operating a low-pressure exhaust gas recirculation (LP-EGR) system at a fixed EGR percentage rate of fresh airflow from mid-load down to a minimum engine load, even as load changes. In this way, errors in the delivered LP-EGR rate during transient conditions may be alleviated by providing a fixed EGR percentage of fresh airflow at all engine loads within a fixed mode range.
摘要翻译： 提供了一种用于控制涡轮增压发动机中的EGR流量的方法。 该方法包括在负载变化的情况下以新的气流从中负载降低至最小发动机负荷的固定EGR率来操作低压排气再循环（LP-EGR）系统。 以这种方式，通过在固定模式范围内的所有发动机负载下提供新鲜气流的固定EGR百分比可以减轻瞬态条件下输送的LP-EGR率的误差。
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公开(公告)号：US08096125B2
公开(公告)日：2012-01-17
申请号：US12645793
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： F01N9/002 , F01N3/021 , F01N2250/02 , F01N2570/10 , F02B29/0406 , F02D41/0007 , F02D41/0055 , F02D41/029 , F02D2200/0802 , F02M26/05 , F02M26/06 , F02M26/15 , F02M26/23 , Y02A50/2325 , Y02T10/144 , Y02T10/20 , Y02T10/47
摘要： Methods and systems are provided for operating a turbocharged engine including a particulate filter positioned upstream of a turbocharger turbine, a catalyst positioned downstream of the turbine, and an EGR passage coupled between an engine exhaust and engine intake. In one example, the method comprises, diverting exhaust gas from downstream of the filter to the engine intake via the EGR passage, and adjusting an amount of diverted exhaust gas based on filter operating conditions.
摘要翻译： 提供了用于操作涡轮增压发动机的方法和系统，所述涡轮增压发动机包括位于涡轮增压器涡轮机上游的微粒过滤器，位于涡轮机下游的催化剂，以及联接在发动机排气和发动机进气口之间的EGR通道。 在一个示例中，该方法包括：经由EGR通道将废气从过滤器的下游转向发动机进气口，并且基于过滤器操作条件来调节排出的排气量。
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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：US08925302B2
公开(公告)日：2015-01-06
申请号：US13598396
申请日：2012-08-29
IPC分类号： F01N3/00
CPC分类号： F02B37/10 , F01N3/2006 , F02B37/183 , F02B37/225 , F02B39/08 , F02B39/10 , F02D23/00 , F02D41/0007 , F02D41/061 , F02D41/062 , F02D2200/0802 , Y02T10/144 , Y02T10/26 , Y10S903/905
摘要： A system and method for operating an engine turbocharger is described. In one example, the turbocharger is rotated in different directions in response to operating conditions. The system and method may reduce engine emissions.
摘要翻译： 描述了用于操作发动机涡轮增压器的系统和方法。 在一个示例中，响应于操作条件，涡轮增压器沿不同方向旋转。 该系统和方法可以减少发动机排放。
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公开(公告)号：US08904787B2
公开(公告)日：2014-12-09
申请号：US13239137
申请日：2011-09-21
IPC分类号： F02D41/00 , F02D9/02 , F02M25/07 , F02B37/007 , F02B29/04
CPC分类号： F02D41/005 , F02B29/0406 , F02B37/007 , F02D9/02 , F02D41/0065 , F02D41/0077 , F02D2041/0017 , F02M26/05 , F02M26/06 , F02M26/08 , F02M26/24 , F02M26/28 , F02M26/38 , F02M26/42 , Y02T10/47
摘要： A method is provided for controlling EGR flow in turbocharged engine. The method comprises operating a low-pressure exhaust gas recirculation (LP-EGR) system at a fixed EGR percentage rate of fresh airflow from mid-load down to a minimum engine load, even as load changes. In this way, errors in the delivered LP-EGR rate during transient conditions may be alleviated by providing a fixed EGR percentage of fresh airflow at all engine loads within a fixed mode range.
摘要翻译： 提供了一种用于控制涡轮增压发动机中的EGR流量的方法。 该方法包括在负载变化的情况下以新的气流从中负载降低至最小发动机负荷的固定EGR率来操作低压排气再循环（LP-EGR）系统。 以这种方式，通过在固定模式范围内的所有发动机负载下提供新鲜气流的固定EGR百分比可以减轻瞬态条件下输送的LP-EGR率的误差。
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公开(公告)号：US20130118162A1
公开(公告)日：2013-05-16
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
IPC分类号： F01N3/035
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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