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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.
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公开(公告)号：US09175661B2
公开(公告)日：2015-11-03
申请号：US13270939
申请日：2011-10-11
申请人： Eric Kurtz , Paul Joseph Tennison , David A. May
发明人： Eric Kurtz , Paul Joseph Tennison , David A. May
CPC分类号： F02P19/02 , F02D41/06 , F02D2200/1006
摘要： Methods and systems for operating a glow plug are disclosed. In one example, current supplied to a glow plug can be controlled to promote combustion stability of a cylinder after an engine start. Engine feedgas hydrocarbons may be reduced during conditions where combustion stability may be otherwise reduced to reduce tailpipe emissions.
摘要翻译： 公开了用于操作电热塞的方法和系统。 在一个示例中，可以控制提供给电热塞的电流，以促进发动机起动之后的气缸的燃烧稳定性。 在燃烧稳定性可能被降低以减少尾气排放的条件下，可以减少发动机原料气体烃。
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公开(公告)号：US08388712B2
公开(公告)日：2013-03-05
申请号：US12370189
申请日：2009-02-12
CPC分类号： F01N3/032 , F01N3/0233 , F01N9/002 , F01N13/0093 , F01N13/011 , F01N2900/0408 , F01N2900/0422 , F01N2900/1406 , F02B29/04 , F02M26/06 , F02M26/22 , F02M26/35 , F02M26/38 , Y02T10/47
摘要： Systems and methods are provided for operating a particulate matter retaining system having at least a first and a second filter, coupled to an engine intake. One example method comprises, during a first condition, operating in a first mode with the first filter storing particulate matter and the second filter releasing stored particulate matter. The method further comprises, operating in a second mode with the first filter releasing stored particulate matter and the second filter storing particulate matter, the exhaust gas flowing in an opposite direction as compared to the first mode. The method further comprises, operating in a third mode with both the first and the second filter storing particulate matter. During the modes, at least some tailpipe gas is drawn from between the first and second filters for expulsion to the atmosphere.
摘要翻译： 提供的系统和方法用于操作具有耦合到发动机进气口的至少第一和第二过滤器的颗粒物质保持系统。 一个示例性方法包括在第一状态期间以第一模式操作，第一过滤器存储颗粒物质，第二过滤器释放存储的颗粒物质。 该方法还包括以第二模式操作，第一过滤器释放存储的颗粒物质和第二过滤器储存颗粒物质，排气与第一模式相比沿相反方向流动。 该方法还包括以第三模式操作第一和第二过滤器存储颗粒物质。 在这些模式期间，至少一些尾管气体从第一和第二过滤器之间被抽出以排出到大气中。
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公开(公告)号：US08200414B2
公开(公告)日：2012-06-12
申请号：US13101803
申请日：2011-05-05
CPC分类号： F02D41/1439 , F02D9/04 , F02D41/0065 , F02D41/1408 , F02D41/146 , F02D41/1466 , F02M26/05 , F02M26/06 , F02M26/15 , F02M26/24 , Y02T10/47
摘要： A method of operating an engine system is described in which a back-pressure valve of a low pressure EGR system can be modulated at a lower frequency during an EGR operation, and at a higher frequency when additional exhaust gas sensing is requested. Back-pressure valve modulation can therefore be used to promote exhaust gas mixing while providing EGR. Exhaust gas constituents in the mixed exhaust gas can then be sensed with higher accuracy by downstream exhaust gas sensors.
摘要翻译： 描述了一种操作发动机系统的方法，其中在EGR操作期间可以以较低的频率调制低压EGR系统的背压阀，并且在需要额外的废气感测时以较高的频率进行调节。 因此，背压阀调节可用于在提供EGR时促进排气混合。 然后可以通过下游排气传感器以更高的精度感测混合废气中的废气成分。
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公开(公告)号：US20110259305A1
公开(公告)日：2011-10-27
申请号：US13101803
申请日：2011-05-05
IPC分类号： F02M25/07
CPC分类号： F02D41/1439 , F02D9/04 , F02D41/0065 , F02D41/1408 , F02D41/146 , F02D41/1466 , F02M26/05 , F02M26/06 , F02M26/15 , F02M26/24 , Y02T10/47
摘要： A method of operating an engine system is described in which a back-pressure valve of a low pressure EGR system can be modulated at a lower frequency during an EGR operation, and at a higher frequency when additional exhaust gas sensing is requested. Back-pressure valve modulation can therefore be used to promote exhaust gas mixing while providing EGR. Exhaust gas constituents in the mixed exhaust gas can then be sensed with higher accuracy by downstream exhaust gas sensors.
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公开(公告)号：US20110023462A1
公开(公告)日：2011-02-03
申请号：US12511537
申请日：2009-07-29
CPC分类号： F01N3/208 , F01N3/035 , F01N3/0842 , F01N3/2073 , F01N9/002 , F01N13/009 , F01N2610/02 , F01N2900/1402 , F01N2900/1622 , F02D41/025 , F02D41/029 , F02D2041/1469 , F02D2200/0812 , Y02A50/2325 , Y02T10/24 , Y02T10/26
摘要： Various systems and methods are described for controlling a selective catalytic reduction system coupled to an exhaust system of an engine, the selective catalytic reduction system including a catalyst and a diesel particulate filter. One example method comprises, before regeneration of the diesel particulate filter, adjusting an operating parameter to decrease an amount of ammonia stored in the SCR catalyst to a desired amount of stored ammonia, where the desired amount of ammonia storage is varied based on operating conditions, and initiating regeneration of the catalyst when the desired amount of stored ammonia is reached.
摘要翻译： 描述了用于控制耦合到发动机的排气系统的选择性催化还原系统的各种系统和方法，所述选择性催化还原系统包括催化剂和柴油微粒过滤器。 一个示例性方法包括在柴油机微粒过滤器再生之前调整操作参数以将存储在SCR催化剂中的氨的量减少到所需量的储存氨，其中所需量的氨储存根据操作条件而变化， 并且当达到所需量的储存氨时开始催化剂的再生。
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公开(公告)号：US20100199839A1
公开(公告)日：2010-08-12
申请号：US12370189
申请日：2009-02-12
CPC分类号： F01N3/032 , F01N3/0233 , F01N9/002 , F01N13/0093 , F01N13/011 , F01N2900/0408 , F01N2900/0422 , F01N2900/1406 , F02B29/04 , F02M26/06 , F02M26/22 , F02M26/35 , F02M26/38 , Y02T10/47
摘要： Systems and methods are provided for operating a particulate matter retaining system, comprising at least a first and a second filter, coupled to an engine intake. One example method comprises, during a first condition, operating in a first mode with the first filter storing particulate matter and the second filter releasing stored particulate matter, with exhaust gas flowing in a first direction through the filters. The method further comprises, operating in a second mode with the first filter releasing stored particulate matter and the second filter storing particulate matter, the exhaust gas flowing in a second, opposite, direction through the filters. The method further comprises, during a second condition, operating in a third mode with both the first and the second filter storing particulate matter. During all modes, at least some tailpipe gas is drawn from between the first and second filter for expulsion to the atmosphere.
摘要翻译： 提供了用于操作颗粒物质保持系统的系统和方法，其包括耦合到发动机进气口的至少第一和第二过滤器。 一个示例性方法包括在第一状态期间以第一过滤器存储颗粒物质并且第二过滤器释放储存的颗粒物质，排气沿着第一方向流过过滤器，以第一模式操作。 该方法还包括以第二模式操作，其中第一过滤器释放存储的颗粒物质，而第二过滤器储存颗粒物质，废气以第二相反的方向流过过滤器。 该方法还包括在第二状态期间以第三和第二过滤器存储颗粒物质的方式操作。 在所有模式期间，至少一些尾管气体从第一和第二过滤器之间抽出，以排出到大气中。
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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。
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公开(公告)号：US20130087129A1
公开(公告)日：2013-04-11
申请号：US13270939
申请日：2011-10-11
申请人： Eric Kurtz , Paul Joseph Tennison , David A. May
发明人： Eric Kurtz , Paul Joseph Tennison , David A. May
IPC分类号： F02D41/00
CPC分类号： F02P19/02 , F02D41/06 , F02D2200/1006
摘要： Methods and systems for operating a glow plug are disclosed. In one example, current supplied to a glow plug can be controlled to promote combustion stability of a cylinder after an engine start. Engine feedgas hydrocarbons may be reduced during conditions where combustion stability may be otherwise reduced to reduce tailpipe emissions.
摘要翻译： 公开了用于操作电热塞的方法和系统。 在一个示例中，可以控制提供给电热塞的电流，以促进发动机起动之后的气缸的燃烧稳定性。 在燃烧稳定性可能被降低以减少尾气排放的条件下，可以减少发动机原料气体烃。
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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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