-
1.发明申请METHOD AND AFTERTREATMENT CONFIGURATION TO REDUCE ENGINE COLD-START NOx EMISSIONS 有权减少发动机冷却NOx排放的方法和后处理配置公开(公告)号：US20110088373A1
公开(公告)日：2011-04-21
申请号：US12582450
申请日：2009-10-20
申请人： Giovanni Cavataio , Jeong Yeol Kim , Michael Goebelbecker , Paul M. Laing , Christine Kay Lambert
发明人： Giovanni Cavataio , Jeong Yeol Kim , Michael Goebelbecker , Paul M. Laing , Christine Kay Lambert
CPC分类号： F01N9/00 , F01N3/08 , F01N3/2066 , F01N13/009 , F01N2410/06 , F02B37/007 , F02B37/18 , F02D41/0007 , F02D41/0235 , F02D41/068 , F02D41/1446 , F02D41/187 , F02D2250/36 , Y02A50/2325 , Y02T10/144 , Y02T10/42 , Y02T10/47
摘要： Systems and methods for reducing NOx emissions using a branched exhaust system with a first and second turbine including an emission-control device containing a zeolite, are described. In one example approach, a method comprises: during a first duration when exhaust temperature is below a first temperature threshold, directing exhaust gas through the second turbine and the emission-control device, and adjusting the second turbine to control intake boost; and during a second duration following the first, directing exhaust gas through the first turbine, and adjusting the first turbine to control intake boost. The emission-control device may be purged when exhaust temperature is above a second temperature threshold higher than the first temperature threshold, where during the second duration exhaust gas does not flow through the emission-control device.
摘要翻译： 描述了使用具有包括含有沸石的排放控制装置的第一和第二涡轮机的分支排气系统来减少NOx排放的系统和方法。 在一个示例性方法中，一种方法包括：在排气温度低于第一温度阈值的第一持续时间内，引导废气通过第二涡轮机和排放控制装置，并且调节第二涡轮机以控制进气增压; 并且在第一次之后的第二持续时间内引导排气通过第一涡轮，并且调节第一涡轮以控制进气增压。 当排气温度高于高于第一温度阈值的第二温度阈值时，排放控制装置可以被清除，其中在第二持续时间内废气不流过排放控制装置。
-
公开(公告)号：US06823663B2
公开(公告)日：2004-11-30
申请号：US10301043
申请日：2002-11-21
申请人： Robert Henry Hammerle , Christine Kay Lambert , Paul M. Laing , Paul Joseph Tennison , William Charles Ruona
发明人： Robert Henry Hammerle , Christine Kay Lambert , Paul M. Laing , Paul Joseph Tennison , William Charles Ruona
IPC分类号： F01N300
CPC分类号： F01N3/30 , F01N3/0253 , F01N3/106 , F01N3/2066 , F01N3/208 , F01N13/009 , F01N13/0093 , F01N2240/16 , F01N2430/08 , F01N2570/18 , F01N2610/02 , F01N2610/03 , F01N2610/08 , F01N2610/10 , F01N2610/107 , F02D41/024 , F02D41/029 , F02D41/1462 , F02M69/08 , Y02T10/24
摘要： A system and a method 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. The particulate filter regeneration method teaches controlling operating conditions to bring the particulate filter temperature in the range where exothermic reaction between hydrocarbon and oxygen occurs. Once this is accomplished, extra hydrocarbons are injected into the exhaust gas entering the particulate filter where they combust and the resulting exotherm regenerates the filter. This method achieves effective particulate matter control while eliminating the risk of thermal damage to the upstream devices and minimizing regeneration fuel economy penalty.
-
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。
-
公开(公告)号：US09528413B2
公开(公告)日：2016-12-27
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。
-
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。
-
公开(公告)号：US20130006500A1
公开(公告)日：2013-01-03
申请号：US13610325
申请日：2012-09-11
CPC分类号： F02D41/0002 , F02D41/0007 , F02D41/025 , F02D41/064 , F02D41/402 , Y02T10/26 , Y02T10/42 , Y02T10/44
摘要： Methods and systems are provided for heating a catalyst during engine cold-start conditions. One example embodiment uses positive valve overlap to drive a boosted blow-through airflow through the cylinders of an engine. Fuel is injected with the blow-through airflow during the valve overlap, and also injected into engine cylinders outside the valve overlap. The catalyst is heated by the resulting exothermic reaction of the blow-through airflow with the combustion products and the injected fuel in the exhaust manifold.
摘要翻译： 提供了用于在发动机冷启动条件期间加热催化剂的方法和系统。 一个示例性实施例使用正的阀重叠来驱动增压的穿透气流穿过发动机的气缸。 在阀重叠期间，燃料喷射有吹气气流，并且还喷射到阀外部的重叠的发动机气缸中。 催化剂被吹入气流与燃烧产物和喷射燃料在排气歧管中的放热反应加热。
-
公开(公告)号：US09238983B2
公开(公告)日：2016-01-19
申请号：US13605895
申请日：2012-09-06
申请人： Xiaogang Zhang , Jianwen James Yi , Wen Dai , Paul M. Laing , John Hedges
发明人： Xiaogang Zhang , Jianwen James Yi , Wen Dai , Paul M. Laing , John Hedges
CPC分类号： F01N3/2066 , F01N3/208 , F01N2610/10 , F01N2610/105 , F01N2610/1433 , F01N2610/144 , F01N2610/1486 , Y02T10/24
摘要： Embodiments for heating an emission control device are provided. In one example, a method for a turbocharged engine comprises during an engine cold-start, delivering boosted air from downstream of a compressor into a wastegate duct coupled across a turbine and exothermically reacting a reductant with the boosted air upstream of an exhaust emission control device. In this way, boosted air may be used to initiate an exothermic reaction to heat the device.
摘要翻译： 提供了用于加热排放控制装置的实施例。 在一个示例中，用于涡轮增压发动机的方法包括在发动机冷启动期间，将增压空气从压缩机的下游输送到跨过涡轮并联的废气门管道，并使还原剂与废气排放控制装置上游的增压空气放热反应 。 以这种方式，可以使用增压空气来引发放热反应以加热该装置。
-
公开(公告)号：US20110209685A1
公开(公告)日：2011-09-01
申请号：US13075019
申请日：2011-03-29
CPC分类号： F02D41/0002 , F02D41/0007 , F02D41/025 , F02D41/064 , F02D41/402 , Y02T10/26 , Y02T10/42 , Y02T10/44
摘要： Methods and systems are provided for heating a catalyst during engine cold-start conditions. One example embodiment uses positive valve overlap to drive a boosted blow-through airflow through the cylinders of an engine. Fuel is injected with the blow-through airflow during the valve overlap, and also injected into engine cylinders outside the valve overlap. The catalyst is heated by the resulting exothermic reaction of the blow-through airflow with the combustion products and the injected fuel in the exhaust manifold.
摘要翻译： 提供了用于在发动机冷启动条件期间加热催化剂的方法和系统。 一个示例性实施例使用正的阀重叠来驱动增压的穿透气流穿过发动机的气缸。 在阀重叠期间，燃料喷射有吹气气流，并且还喷射到阀外部的重叠的发动机气缸中。 催化剂被吹入气流与燃烧产物和喷射燃料在排气歧管中的放热反应加热。
-
公开(公告)号：US09194311B2
公开(公告)日：2015-11-24
申请号：US13610325
申请日：2012-09-11
CPC分类号： F02D41/0002 , F02D41/0007 , F02D41/025 , F02D41/064 , F02D41/402 , Y02T10/26 , Y02T10/42 , Y02T10/44
摘要： Methods and systems are provided for heating a catalyst during engine cold-start conditions. One example embodiment uses positive valve overlap to drive a boosted blow-through airflow through the cylinders of an engine. Fuel is injected with the blow-through airflow during the valve overlap, and also injected into engine cylinders outside the valve overlap. The catalyst is heated by the resulting exothermic reaction of the blow-through airflow with the combustion products and the injected fuel in the exhaust manifold.
摘要翻译： 提供了用于在发动机冷启动条件期间加热催化剂的方法和系统。 一个示例性实施例使用正的阀重叠来驱动增压的穿透气流穿过发动机的气缸。 在阀重叠期间，燃料喷射有吹气气流，并且还喷射到阀外部的重叠的发动机气缸中。 催化剂被吹入气流与燃烧产物和喷射燃料在排气歧管中的放热反应加热。
-
公开(公告)号：US08272362B2
公开(公告)日：2012-09-25
申请号：US13075019
申请日：2011-03-29
CPC分类号： F02D41/0002 , F02D41/0007 , F02D41/025 , F02D41/064 , F02D41/402 , Y02T10/26 , Y02T10/42 , Y02T10/44
摘要： Methods and systems are provided for heating a catalyst during engine cold-start conditions. One example embodiment uses positive valve overlap to drive a boosted blow-through airflow through the cylinders of an engine. Fuel is injected with the blow-through airflow during the valve overlap, and also injected into engine cylinders outside the valve overlap. The catalyst is heated by the resulting exothermic reaction of the blow-through airflow with the combustion products and the injected fuel in the exhaust manifold.
摘要翻译： 提供了用于在发动机冷启动条件期间加热催化剂的方法和系统。 一个示例性实施例使用正的阀重叠来驱动增压的穿透气流穿过发动机的气缸。 在阀重叠期间，燃料喷射有吹气气流，并且还喷射到阀外部的重叠的发动机气缸中。 催化剂被吹入气流与燃烧产物和喷射燃料在排气歧管中的放热反应加热。
-
-
-
-
-
-
-
-
-
搜索结果
14 条记录 (耗时 0.023 秒)
