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    METHODS AND SYSTEMS TO CONTROL EXHAUST GAS RECIRCULATION
    32.
    发明申请
    METHODS AND SYSTEMS TO CONTROL EXHAUST GAS RECIRCULATION 有权
    控制排气回收的方法和系统

    公开(公告)号：US20160369723A1

    公开(公告)日：2016-12-22

    申请号：US14745868

    申请日：2015-06-22

    Applicant: General Electric Company

    Inventor： Dipankar Deb ,  Prashant Srinivasan ,  Medy Satria ,  Maruthi Narasinga Rao Devarakonda ,  Dhruval Bhatt

    IPC: F02D41/00 ,  F02D41/26 ,  F02D21/08

    CPC classification number: F02D41/0077 ,  F02D21/08 ,  F02D41/0052 ,  F02D41/0072 ,  F02D41/1461 ,  F02D41/26 ,  F02D2021/083 ,  F02D2200/0406 ,  F02D2250/36 ,  Y02T10/47

    Abstract: A system includes an engine comprising an EGR valve that recirculates a portion of exhaust gas, a data repository that stores a first look up and one or more engine operational parameters, an engine control unit operationally coupled to the engine and the data repository, wherein the engine control unit is configured to: determine a desired EGR flow rate reference of the portion of the exhaust gas based on the one or more engine operational parameters and the first look up table, determine a current estimated EGR flow rate based on the one or more engine operational parameters, determine a designated corrected EGR flow rate reference based on the desired EGR flow rate reference and a delta EGR flow rate, determine EGR flow rate error, and determine a percentage opening of the EGR valve based at least on the EGR flow rate error.

    Abstract translation: 一种系统包括：发动机，其包括再循环废气的一部分的EGR阀，存储第一查询的数据存储库和一个或多个发动机操作参数;可操作地耦合到所述引擎和所述数据存储库的引擎控制单元，其中， 发动机控制单元被配置为：基于所述一个或多个发动机操作参数和所述第一查询表来确定所述废气的所述部分的期望EGR流量参考，基于所述一个或多个发动机控制单元确定当前估计的EGR流量 发动机操作参数，基于期望的EGR流量参考值和ΔRR流量来确定指定的校正EGR流量参考值，确定EGR流量误差，并且至少基于EGR流量确定EGR阀的百分比开度 错误。

    SYSTEMS AND METHODS FOR CONTROLLING AFTERTREATMENT SYSTEMS
    33.
    发明申请
    SYSTEMS AND METHODS FOR CONTROLLING AFTERTREATMENT SYSTEMS 有权
    用于控制后处理系统的系统和方法

    公开(公告)号：US20160256823A1

    公开(公告)日：2016-09-08

    申请号：US14635816

    申请日：2015-03-02

    Applicant: General Electric Company

    Inventor： Maruthi Narasinga Rao Devarakonda

    IPC: B01D53/94

    CPC classification number: B01D53/9495 ,  B01D53/90 ,  B01D53/9409 ,  B01D53/9431 ,  B01D53/9477 ,  B01D2251/2067 ,  F01N3/106 ,  F01N3/208 ,  F01N2240/40 ,  F01N2560/06 ,  F01N2570/18 ,  F01N2900/1622 ,  Y02T10/24

    Abstract: A system includes a nitrogen oxide reduction catalyst fluidly coupled to an exhaust conduit of an engine system. The nitrogen oxide reduction catalyst is configured to reduce nitrogen oxides in an engine exhaust. The system also includes an ammonia oxidation catalyst fluidly coupled to the exhaust conduit downstream of the nitrogen oxide reduction catalyst and configured to reduce ammonia in the engine exhaust. Further, the system includes a reductant injection control system configured to control an injection of reductant into the exhaust conduit, determine a first nitrogen oxide conversion rate of the nitrogen oxide reduction catalyst, determine an ammonia storage value of the nitrogen oxide reduction catalyst, and determine a first temperature of the engine exhaust upstream of the ammonia oxidation catalyst. The reductant injection control system is also configured to increase or decrease the injection of reductant based on the first nitrogen oxide conversion, the ammonia storage value, and the first temperature.

    Abstract translation: 系统包括流体耦合到发动机系统的排气管道的氮氧化物还原催化剂。 氮氧化物还原催化剂被配置为减少发动机排气中的氮氧化物。 该系统还包括与氮氧化物还原催化剂下游的排气导管流体耦合的氨氧化催化剂并且构造成减少发动机排气中的氨。 此外，该系统包括还原剂注入控制系统，其被配置为控制将还原剂注入到排气管道中，确定氮氧化物还原催化剂的第一氮氧化物转化率，确定氮氧化物还原催化剂的氨储存值，并确定 在氨氧化催化剂上游的发动机排气的第一温度。 还原剂注入控制系统还被配置为基于第一氮氧化物转化率，氨储存值和第一温度来增加或减少还原剂的注入。

    Silencer for mid-bed air injection mixing
    36.
    发明授权
    Silencer for mid-bed air injection mixing 有权
    消声器用于中床空气注射混合

    公开(公告)号：US09347358B1

    公开(公告)日：2016-05-24

    申请号：US14554706

    申请日：2014-11-26

    Applicant: General Electric Company

    Inventor： Dennis John Spaulding ,  Maruthi Narasinga Rao Devarakonda ,  James Kristopher von der Ehe

    IPC: F01N1/14 ,  F01N3/28 ,  F01N3/05 ,  F01N3/10 ,  F01N13/00 ,  F01N3/30

    CPC classification number: F01N3/2885 ,  F01N1/00 ,  F01N3/05 ,  F01N3/101 ,  F01N3/106 ,  F01N3/2892 ,  F01N3/30 ,  F01N13/007 ,  F01N13/009 ,  F01N2270/10 ,  F01N2570/18 ,  F01N2610/06 ,  Y02A50/2346 ,  Y02T10/22

    Abstract: A system includes an exhaust aftertreatment system configured to treat emissions from a combustion engine. The exhaust aftertreatment system includes a first catalyst assembly having an outlet. The exhaust aftertreatment system also includes an ammonia slip catalyst (ASC) assembly configured to receive a fluid from the first catalyst assembly and to convert ammonia (NH3) within the fluid into nitrogen (N2), wherein the ASC assembly has an inlet. The exhaust aftertreatment system further includes a silencer disposed between the outlet of the first catalyst assembly and the inlet of the ASC assembly, wherein the silencer is configured to receive the fluid and an oxidant for mixing with the fluid provide sufficient oxygen in the fluid flowing into the inlet of the ASC assembly to enable the catalytic activity in the ASC assembly that coverts NH3 into N2, and the silencer is configured to mix the fluid and the oxidant.

    Abstract translation: 一种系统包括配置成处理来自内燃机的排放物的排气后处理系统。 排气后处理系统包括具有出口的第一催化剂组件。 排气后处理系统还包括氨滑移催化剂（ASC）组件，其构造成从第一催化剂组件接收流体并将流体内的氨（NH 3）转化为氮气（N 2），其中ASC组件具有入口。 排气后处理系统还包括设置在第一催化剂组件的出口和ASC组件的入口之间的消声器，其中消音器被配置为接收流体，并且用于与流体混合的氧化剂在流入的流体中提供足够的氧气 ASC组件的入口以使得能够将ASC组件中的催化活性覆盖NH 3进入N2，并且消声器被配置为混合流体和氧化剂。

    Emission control in rich burn natural gas engines
    38.
    发明授权
    Emission control in rich burn natural gas engines 有权
    丰富燃烧天然气发动机排放控制

    公开(公告)号：US09149768B1

    公开(公告)日：2015-10-06

    申请号：US14226934

    申请日：2014-03-27

    Applicant: General Electric Company

    Inventor： Maruthi Narasinga Rao Devarakonda ,  Robert Earl McDowell ,  Dennis John Spaulding ,  James Kristopher von der Ehe

    IPC: B01D53/94 ,  F01N3/05 ,  F01N3/30

    CPC classification number: B01D53/9459 ,  B01D53/9477 ,  B01D2255/904 ,  F01N3/101 ,  F01N3/108 ,  F01N3/2892 ,  F01N3/30 ,  F01N3/32 ,  F02B37/00 ,  Y02A50/2346 ,  Y02T10/144 ,  Y02T10/22

    Abstract: A passive mid bed air injection apparatus for an engine includes a three way catalyst positioned in an exhaust stream of the engine. The three way catalyst reduces NOx, CO and HC from the exhaust stream. The three way catalyst includes an ammonia slip catalyst positioned in the exhaust stream of the engine. The ammonia slip catalyst is positioned downstream from the three way catalyst and oxidizes NH3 and CO from the exhaust stream. The three way catalyst includes an oxygen input disposed between the three way catalyst and the ammonia slip catalyst such that the oxygen input delivers air downstream from the three way catalyst and upstream from the ammonia slip catalyst. The oxygen input receives the air from a charged side of a forced induction device and delivers the air to the exhaust stream entering the ammonia slip catalyst. An associated method also provided.

    Abstract translation: 用于发动机的被动中空气体注射装置包括位于发动机排气流中的三通催化剂。 三元催化剂从排气流中还原NOx，CO和HC。 三元催化剂包括位于发动机排气流中的氨滑动催化剂。 氨滑移催化剂位于三元催化剂的下游，并从排气流中氧化NH3和CO。 三元催化剂包括设置在三元催化剂和氨滑动催化剂之间的氧气输入，使得氧气输入输送从三元催化剂下游的空气和氨滑移催化剂的上游。 氧输入从强制感应装置的充电侧接收空气，并将空气输送到进入氨滑动催化剂的排气流。 还提供了一种相关联的方法。

    ON-BOARD CATALYST HEALTH MONITORING AND CONTROL SYSTEM ADAPTATION IN INTERNAL COMBUSTION ENGINES
    39.
    发明申请
    ON-BOARD CATALYST HEALTH MONITORING AND CONTROL SYSTEM ADAPTATION IN INTERNAL COMBUSTION ENGINES 有权
    内燃机中的板载催化剂健康监测和控制系统适应性

    公开(公告)号：US20150139860A1

    公开(公告)日：2015-05-21

    申请号：US14083823

    申请日：2013-11-19

    Applicant: General Electric Company

    Inventor： Maruthi Narasinga Rao Devarakonda

    IPC: F01N11/00 ,  F01N9/00

    CPC classification number: F01N11/007 ,  F01N3/101 ,  F01N3/2066 ,  F01N9/00 ,  F01N11/00 ,  F01N2550/02 ,  F01N2560/021 ,  F01N2560/022 ,  F01N2560/025 ,  F01N2560/026 ,  F01N2900/1614 ,  F01N2900/1624 ,  Y02T10/22 ,  Y02T10/24 ,  Y02T10/47

    Abstract: Various embodiments include systems adapted to monitor catalyst deterioration. Some embodiments include a catalyst deterioration detection system including a pre-catalytic converter gas sensor, a post-catalytic converter gas sensor, at least one computing device in communication with the pre-catalytic converter and post-catalytic converter gas sensors, the at least one computing device configured to monitor catalyst deterioration by performing actions including estimating a catalyst gas storage level by comparing a difference between a pre-catalytic converter gas level from the pre-catalytic converter gas sensor and a post-catalytic converter gas level from the post-catalytic converter gas sensor, comparing the estimated catalyst gas storage level to a baseline catalyst gas storage level and determining that the catalyst is deteriorated in response to the baseline catalyst gas storage level exceeding the estimated gas storage level by a threshold difference.

    Abstract translation: 各种实施例包括适于监测催化剂劣化的系统。 一些实施方案包括催化剂劣化检测系统，其包括预催化转化器气体传感器，后催化转化器气体传感器，与预催化转化器和后催化转化器气体传感器连通的至少一个计算装置，所述至少一个 计算装置，其被配置为通过执行动作来监视催化剂劣化，所述动作包括通过比较来自催化前转换器气体传感器的催化前转化器气体水平与来自催化后转化器气体传感器的催化后转化器气体水平之间的差异来估计催化剂气体储存水平 转换器气体传感器，将估计的催化剂气体储存水平与基线催化剂气体储存水平进行比较，并且确定催化剂响应于基准催化剂气体储存水平超过估计的气体存储水平阈值差而劣化。

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