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    Apparatus, system, and method for determining the degradation of an SCR catalyst
    1.
    发明授权
    Apparatus, system, and method for determining the degradation of an SCR catalyst 有权
    用于确定SCR催化剂降解的装置，系统和方法

    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。

    SYSTEM AND APPARATUS FOR ENHANCING EXHAUST AFTERTREATMENT STARTUP EMISSIONS CONTROL
    2.
    发明申请
    SYSTEM AND APPARATUS FOR ENHANCING EXHAUST AFTERTREATMENT STARTUP EMISSIONS CONTROL 有权
    用于增强排气启动排放控制的系统和装置

    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。

    Mass spectrometry system and method
    3.
    发明授权
    Mass spectrometry system and method 有权
    质谱体系及方法

    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。

    Control system for doser compensation in an SCR system
    4.
    发明授权
    Control system for doser compensation in an SCR system 有权
    SCR系统中加料器补偿控制系统

    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。

    System and apparatus for enhancing exhaust aftertreatment startup emissions control
    5.
    发明授权
    System and apparatus for enhancing exhaust aftertreatment startup emissions control 有权
    用于增强废气后处理启动排放控制的系统和装置

    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。

    CONTROL SYSTEM FOR DOSER COMPENSATION IN AN SCR SYSTEM
    6.
    发明申请
    CONTROL SYSTEM FOR DOSER COMPENSATION IN AN SCR SYSTEM 有权
    控制系统用于在SCR系统中进行补偿

    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。

    System, method and apparatus for fuel injector diagnostics
    7.
    发明申请
    System, method and apparatus for fuel injector diagnostics 有权
    燃油喷射器诊断系统，方法和装置

    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。