公开(公告)号：US08141340B2

公开(公告)日：2012-03-27

申请号：US12433600

申请日：2009-04-30

申请人： Phanindra Garimella ,  Joan M. Wills ,  John N. Chi ,  Neal W. Currier ,  Aleksey Yezerets

发明人： Phanindra Garimella ,  Joan M. Wills ,  John N. Chi ,  Neal W. Currier ,  Aleksey Yezerets

IPC分类号： F01N3/00

CPC分类号： F01N3/208 ,  F01N2550/02 ,  F01N2560/026 ,  F01N2610/02 ,  F01N2900/1402 ,  F01N2900/1622 ,  Y02T10/24

摘要： According to one representative embodiment, an apparatus for determining the degradation of a selective catalytic reduction (SCR) catalyst of an engine exhaust aftertreatment system includes a system properties module configured to store at least one system dynamics property value of the exhaust system at a first time and receive the at least one system dynamics property value of the exhaust aftertreatment system at a second time subsequent to the first time. The apparatus also includes a system dynamics module configured to determine a storage capacity of the SCR catalyst based on a comparison between the at least one system dynamic property value at the first time and the at least one system dynamic property value at the second time. Additionally, the apparatus includes an SCR catalyst degradation factor module configured to determine an SCR catalyst degradation factor based at least partially on the storage capacity of the SCR catalyst.

摘要翻译： 根据一个代表性实施例，用于确定发动机排气后处理系统的选择性催化还原（SCR）催化剂的劣化的装置包括系统特性模块，其被配置为在第一时间存储排气系统的至少一个系统动力特性值 并且在第一次之后的第二时间接收排气后处理系统的至少一个系统动力特性值。 该装置还包括系统动力学模块，其被配置为基于第一时间的至少一个系统动态属性值与第二时间的至少一个系统动态属性值之间的比较来确定SCR催化剂的存储容量。 另外，该装置包括SCR催化剂劣化因子模块，其被配置为至少部分地基于SCR催化剂的储存容量来确定SCR催化剂降解因子。

公开(公告)号：US20120023906A1

公开(公告)日：2012-02-02

申请号：US13045252

申请日：2011-03-10

申请人： Aleksey Yezerets ,  Zheng Liu ,  Neal W. Currier ,  J. Stephen Wills

发明人： Aleksey Yezerets ,  Zheng Liu ,  Neal W. Currier ,  J. Stephen Wills

IPC分类号： F01N3/18 ,  F01N3/10

CPC分类号： F01N3/208 ,  F01N11/002 ,  F01N2560/06 ,  F01N2610/02 ,  F01N2610/1453 ,  F01N2900/12 ,  F01N2900/1602 ,  Y02T10/24 ,  Y02T10/47

摘要： An aftertreatment system including a method which provides a selective catalytic reduction (SCR) catalyst disposed in an exhaust stream of an engine; determines that an ammonia pre-load condition for the SCR catalyst is present; determines a first amount of ammonia pre-load in response to the ammonia pre-load condition; injects an amount of ammonia or urea into the exhaust stream in response to the first amount of ammonia; and adsorbs a second amount of ammonia onto the SCR catalyst in response to injecting an amount of ammonia or urea, where the second amount of ammonia is either the injected amount of ammonia or an amount of ammonia resulting from hydrolysis from the injected amount of urea.

摘要翻译： 一种后处理系统，包括提供设置在发动机的排气流中的选择性催化还原（SCR）催化剂的方法; 确定存在用于SCR催化剂的氨预加载条件; 响应于氨预负荷状态确定氨预负载的第一量; 响应于第一量的氨将一定量的氨或尿素注入排气流中; 并且响应于注入一定量的氨或尿素而将第二量的氨吸附到SCR催化剂上，其中第二量的氨是从注射量的尿液中注入的氨的量或由水解产生的氨的量。

公开(公告)号：US07211793B2

公开(公告)日：2007-05-01

申请号：US10983884

申请日：2004-11-09

申请人： Neal W. Currier ,  Aleksey Yezerets

发明人： Neal W. Currier ,  Aleksey Yezerets

IPC分类号： H01J49/04 ,  B01D59/44

CPC分类号： H01J49/0422

摘要： Mass spectrometry system for analyzing components of a gas. In accordance with one embodiment, the system includes a mass spectrometer adapted to analyze components of the gas, and an inlet capillary fluidically connected to the mass spectrometer to convey a sample of the gas to the mass spectrometer. The inlet capillary includes an inner bore with a bore wall having a catalytic coating thereon for reacting with at least one component of the sampled gas to convert the at least one component to another gas species as the sampled gas is conveyed through the inlet capillary. The mass spectrometer is adapted to analyze the converted gas species and derive information, such as quantity, of the component of sample gas that has been converted. A method of analyzing a gas is also provided.

摘要翻译： 用于分析气体组分的质谱系统。 根据一个实施例，该系统包括适于分析气体的组分的质谱仪，以及与质谱仪流体连接的入口毛细管，以将气体样品输送到质谱仪。 入口毛细管包括内孔，其具有在其上具有催化涂层的孔壁，用于与采样气体的至少一个组分反应，以将所述至少一种组分转化为另一种气体物质，因为采样气体通过入口毛细管输送。 质谱仪用于分析转换后的气体种类，并得出已经转化的样品气体组分的数据，如数量。 还提供了一种分析气体的方法。

公开(公告)号：US08893475B2

公开(公告)日：2014-11-25

申请号：US13045231

申请日：2011-03-10

申请人： Mert Geveci ,  Aleksey Yezerets ,  Neal W. Currier ,  Michael Haas ,  Andrew W. Osburn

发明人： Mert Geveci ,  Aleksey Yezerets ,  Neal W. Currier ,  Michael Haas ,  Andrew W. Osburn

IPC分类号： F01N3/00 ,  F01N3/20

CPC分类号： F01N3/208 ,  F01N2550/05 ,  F01N2560/021 ,  F01N2610/02 ,  F01N2900/1602 ,  F01N2900/1621 ,  Y02T10/24

摘要： A method includes determining whether selective catalytic reduction (SCR) test conditions are present, and in response to the SCR test conditions being present, operating an SCR aftertreatment system at a number of reduced ammonia to NOx ratio (ANR) operating points. The method further includes determining a deNOx efficiency value corresponding to each of the ANR operating points. The method further includes determining a reductant correction value in response to the deNOx efficiency values corresponding to each of the ANR operating points, and providing a reductant injection command in response to the reductant correction value.

摘要翻译： 一种方法包括确定是否存在选择性催化还原（SCR）测试条件，并且响应于存在的SCR测试条件，在降低的氨至NOx比（ANR）操作点的数量下操作SCR后处理系统。 该方法还包括确定对应于每个ANR工作点的脱硝效率值。 该方法还包括响应于与每个ANR工作点对应的脱硝效率值确定还原剂校正值，以及响应于还原剂校正值提供还原剂注入命令。

公开(公告)号：US08745971B2

公开(公告)日：2014-06-10

申请号：US13045208

申请日：2011-03-10

申请人： Aleksey Yezerets ,  Timothy R. Frazier ,  Marten H. Dane ,  Samuel C. Geckler ,  Govindarajan Kothandaraman

发明人： Aleksey Yezerets ,  Timothy R. Frazier ,  Marten H. Dane ,  Samuel C. Geckler ,  Govindarajan Kothandaraman

IPC分类号： F01N3/00 ,  F01N3/10 ,  F01N3/02

CPC分类号： F02D41/1454 ,  F01N3/035 ,  F01N3/101 ,  F01N9/002 ,  F01N11/005 ,  F01N11/007 ,  F01N2550/04 ,  F01N2560/025 ,  F01N2900/0416 ,  F01N2900/1602 ,  F01N2900/1606 ,  F02D41/029 ,  F02D41/1408 ,  F02D41/1441 ,  F02D41/146 ,  F02D2200/0802 ,  F02D2200/0812 ,  Y02T10/22 ,  Y02T10/24 ,  Y02T10/47

摘要： A system includes an internal combustion ignition engine with an exhaust gas flow, a particulate filter in the exhaust gas flow, a NOx reduction catalyst in the exhaust gas flow downstream of the particulate filter, a first oxygen sensor coupled to the exhaust gas flow downstream of the NOx reduction catalyst, and a second oxygen sensor coupled to the exhaust gas flow between the particulate filter and the NOx reduction catalyst. A controller includes an exhaust conditions module that interprets a first oxygen signal from the first oxygen sensor and a second oxygen signal from the second oxygen sensor and a combustion control module that commands a high engine-out air-fuel ratio when the first oxygen signal indicates a low oxygen content and commands a low engine-out air-fuel ratio when the first oxygen signal indicates a high oxygen content.

摘要翻译： 一种系统包括具有废气流的内燃点火发动机，排气流中的微粒过滤器，在颗粒过滤器下游的废气流中的NOx还原催化剂，耦合到排气流下游的废气流的第一氧传感器 NOx还原催化剂和与颗粒过滤器和NOx还原催化剂之间的废气流耦合的第二氧传感器。 控制器包括：排气条件模块，其解释来自第一氧传感器的第一氧信号和来自第二氧传感器的第二氧信号;以及燃烧控制模块，其在第一氧信号指示时命令高发动机输出空燃比 低氧含量，并且当第一氧信号表示高氧含量时，发出低的发动机空燃比。

公开(公告)号：US08671666B2

公开(公告)日：2014-03-18

申请号：US13045252

申请日：2011-03-10

申请人： Aleksey Yezerets ,  Zheng Liu ,  Neal W. Currier ,  J. Stephen Wills

发明人： Aleksey Yezerets ,  Zheng Liu ,  Neal W. Currier ,  J. Stephen Wills

IPC分类号： F01N3/00 ,  F01N3/10

CPC分类号： F01N3/208 ,  F01N11/002 ,  F01N2560/06 ,  F01N2610/02 ,  F01N2610/1453 ,  F01N2900/12 ,  F01N2900/1602 ,  Y02T10/24 ,  Y02T10/47

摘要： An aftertreatment system including a method which provides a selective catalytic reduction (SCR) catalyst disposed in an exhaust stream of an engine; determines that an ammonia pre-load condition for the SCR catalyst is present; determines a first amount of ammonia pre-load in response to the ammonia pre-load condition; injects an amount of ammonia or urea into the exhaust stream in response to the first amount of ammonia; and adsorbs a second amount of ammonia onto the SCR catalyst in response to injecting an amount of ammonia or urea, where the second amount of ammonia is either the injected amount of ammonia or an amount of ammonia resulting from hydrolysis from the injected amount of urea.

摘要翻译： 一种后处理系统，包括提供设置在发动机的排气流中的选择性催化还原（SCR）催化剂的方法; 确定存在用于SCR催化剂的氨预加载条件; 响应于氨预负荷状态确定氨预负载的第一量; 响应于第一量的氨将一定量的氨或尿素注入排气流中; 并且响应于注入一定量的氨或尿素而将第二量的氨吸附到SCR催化剂上，其中第二量的氨是从注射量的尿液中注入的氨的量或由水解产生的氨的量。

公开(公告)号：US20110219747A1

公开(公告)日：2011-09-15

申请号：US13045231

申请日：2011-03-10

申请人： Mert Geveci ,  Aleksey Yezerets ,  Neal W. Currier ,  Michael Haas ,  Andrew W. Osburn

发明人： Mert Geveci ,  Aleksey Yezerets ,  Neal W. Currier ,  Michael Haas ,  Andrew W. Osburn

IPC分类号： F01N11/00 ,  F01N3/20 ,  F01N3/10

CPC分类号： F01N3/208 ,  F01N2550/05 ,  F01N2560/021 ,  F01N2610/02 ,  F01N2900/1602 ,  F01N2900/1621 ,  Y02T10/24

摘要： A method includes determining whether selective catalytic reduction (SCR) test conditions are present, and in response to the SCR test conditions being present, operating an SCR aftertreatment system at a number of reduced ammonia to NOx ratio (ANR) operating points. The method further includes determining a deNOx efficiency value corresponding to each of the ANR operating points. The method further includes determining a reductant correction value in response to the deNOx efficiency values corresponding to each of the ANR operating points, and providing a reductant injection command in response to the reductant correction value.

摘要翻译： 一种方法包括确定是否存在选择性催化还原（SCR）测试条件，并且响应于存在的SCR测试条件，在降低的氨至NOx比（ANR）操作点的数量下操作SCR后处理系统。 该方法还包括确定对应于每个ANR工作点的脱硝效率值。 该方法还包括响应于与每个ANR工作点对应的脱硝效率值确定还原剂校正值，以及响应于还原剂校正值提供还原剂注入命令。

公开(公告)号：US20110113756A1

公开(公告)日：2011-05-19

申请号：US12590788

申请日：2009-11-13

申请人： Aleksey Yezerets ,  Pradeep Prasad ,  Yuetao Zhang ,  Daniel D. Wilhelm ,  Neal W. Currier

发明人： Aleksey Yezerets ,  Pradeep Prasad ,  Yuetao Zhang ,  Daniel D. Wilhelm ,  Neal W. Currier

IPC分类号： F01N11/00 ,  F01N3/10 ,  F02D45/00 ,  F01N3/035

CPC分类号： F02D41/221 ,  F01N3/0253 ,  F01N3/103 ,  F01N3/106 ,  F01N3/36 ,  F01N11/007 ,  F01N2550/05 ,  F01N2560/025 ,  F01N2560/06 ,  F02D41/1446 ,  F02D41/1454 ,  Y02T10/20 ,  Y02T10/40 ,  Y02T10/47

摘要： A method includes providing a system having a fluid flow, a fuel injector and an oxygen sensor disposed in the fluid flow, where the oxygen sensor is downstream of the fuel injector. The method includes determining a first air fuel ratio, changing an injection rate of the fuel injector and determining a second air fuel ratio, and determining a fault value for the fuel injector from the first air fuel ratio and the second air fuel ratio. The method further includes determining the fault value for the fuel injector by determining a difference between the first air fuel ratio and the second air fuel ratio, and by determining that the fault value is positive in response to the difference being lower than a passing threshold value. The method includes changing injection rates of the fuel injector for specified periods of time short enough to significant disruption of system temperatures.

摘要翻译： 一种方法包括提供具有流体流的系统，燃料喷射器和设置在流体流中的氧传感器，其中氧传感器位于燃料喷射器的下游。 该方法包括确定第一空气燃料比，改变燃料喷射器的喷射速率和确定第二空气燃料比，以及根据第一空气燃料比和第二空气燃料比确定燃料喷射器的故障值。 该方法还包括通过确定第一空气燃料比和第二空气燃料比之间的差异来确定燃料喷射器的故障值，并且通过根据差值低于通过阈值确定故障值为正 。 该方法包括将燃料喷射器的喷射速率改变到特定时间段足够短以显着地破坏系统温度。

公开(公告)号：US20110047964A1

公开(公告)日：2011-03-03

申请号：US12551747

申请日：2009-09-01

申请人： Aleksey Yezerets ,  Neal W. Currier ,  Zheng Liu ,  Joan M Wills ,  Abdul R. Ofoli ,  Michael R. Haas ,  Andrew W. Osburn

发明人： Aleksey Yezerets ,  Neal W. Currier ,  Zheng Liu ,  Joan M Wills ,  Abdul R. Ofoli ,  Michael R. Haas ,  Andrew W. Osburn

IPC分类号： F01N9/00 ,  F01N11/00

CPC分类号： F01N3/2066 ,  F01N11/00 ,  F01N2550/02 ,  F01N2550/05 ,  Y02A50/2325 ,  Y02T10/24 ,  Y02T10/47

摘要： One embodiment is a method including operating an SCR system at a plurality of commanded ammonia to NOx input ratios, providing a plurality of data indicating NOx output from the SCR system for the plurality of commanded ammonia to NOx input ratios, and evaluating the plurality of data to diagnose the SCR system. Additional embodiment are methods, systems, and apparatuses including SCR diagnostics. Further embodiments, forms, objects, features, advantages, aspects, and benefits shall become apparent from the following description and drawings.

摘要翻译： 一个实施例是一种方法，包括以多个指令氨操作SCR系统至NOx输入比，提供指示SCR系统的NOx输出的多个数据用于多个指令氨至NOx输入比，并且评估多个数据 诊断SCR系统。 附加实施例是包括SCR诊断的方法，系统和装置。 从以下说明和附图，其他实施例，形式，目的，特征，优点，方面和优点将变得显而易见。

公开(公告)号：US20080173010A1

公开(公告)日：2008-07-24

申请号：US11613729

申请日：2006-12-20

申请人： Arvind S. Suresh ,  Neal W. Currier ,  Aleksey Yezerets ,  Bradlee J. Strolia

发明人： Arvind S. Suresh ,  Neal W. Currier ,  Aleksey Yezerets ,  Bradlee J. Strolia

IPC分类号： F01N11/00 ,  F01N3/00 ,  F01N3/023 ,  G01M15/04 ,  F02D41/04 ,  F02D9/02 ,  F02D35/00 ,  F02B47/08 ,  F01L1/34 ,  G01M15/10 ,  F01N3/035

CPC分类号： F02D41/0002 ,  F01L1/34 ,  F01L2800/00 ,  F01L2800/10 ,  F01N3/035 ,  F01N3/0842 ,  F01N3/106 ,  F01N9/002 ,  F01N13/009 ,  F01N2240/36 ,  F01N2250/02 ,  F01N2430/085 ,  F01N2430/10 ,  F02D41/0052 ,  F02D41/0055 ,  F02D41/029 ,  F02D2041/001 ,  Y02T10/42 ,  Y02T10/47

摘要： Inhibiting uncontrolled regeneration of a particulate filter fluidly coupled to an exhaust manifold of an internal combustion engine may comprise reducing an oxygen concentration of exhaust gas supplied to the particulate filter if active regeneration of the particulate filter is in progress and rotational speed of the engine speed thereafter drops to an idle speed range from an elevated rotational speed that is greater than the idle speed range. Reducing the oxygen concentration of the exhaust gas supplied to the particulate filter may include any one or combination of reducing the oxygen concentration of intake air supplied to the intake manifold, reducing the air portion of the air-to-fuel ratio of the air-fuel mixture supplied to the engine and removing oxygen from the exhaust gas supplied to the particulate filter.

摘要翻译： 抑制流体耦合到内燃机的排气歧管的微粒过滤器的不受控制的再生可以包括如果微粒过滤器的主动再生正在进行中并且之后的发动机转速的转速，则减少供给到微粒过滤器的废气的氧气浓度 从高于怠速范围的高转速下降到怠速范围。 减少供给到微粒过滤器的排气的氧浓度可以包括减少供给到进气歧管的进气的氧气浓度的任何一种或组合，从而减少空气燃料的空气燃料比的空气部分 混合物供应到发动机并从供应到微粒过滤器的废气中除去氧气。