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    GASEOUS REDUCTANT INJECTION CONTROL SYSTEM
    21.
    发明申请
    GASEOUS REDUCTANT INJECTION CONTROL SYSTEM 有权
    气体减排注射控制系统

    公开(公告)号：US20150113962A1

    公开(公告)日：2015-04-30

    申请号：US14062098

    申请日：2013-10-24

    Applicant: General Electric Company

    Inventor： Maruthi Narasinga Rao Devarakonda

    IPC: F01N3/18

    CPC classification number: F01N3/18 ,  F01N3/103 ,  F01N3/2066 ,  F01N3/208 ,  F01N9/005 ,  F01N13/009 ,  F01N2560/021 ,  F01N2560/026 ,  F01N2560/06 ,  F01N2560/07 ,  F01N2560/08 ,  F01N2570/14 ,  F01N2610/02 ,  F01N2610/06 ,  F01N2900/0416 ,  F01N2900/1402 ,  F01N2900/1404 ,  F01N2900/1406 ,  F01N2900/1411 ,  Y02T10/24 ,  Y02T10/47

    Abstract: A gaseous reductant injection control system for exhaust aftertreatment is disclosed. In one embodiment, a selective catalytic reduction (SCR) catalyst is in fluid communication with an exhaust stream generated from an engine. An oxidation catalyst (OC) is upstream of the SCR catalyst and in fluid communication with the exhaust stream. A gaseous reductant injector is upstream of the SCR catalyst and downstream of the OC and in fluid communication with the exhaust stream. A first gas sensor is upstream of the OC and a second gas sensor is downstream of the SCR catalyst. A controller receives signals representative of gas concentrations detected in the exhaust stream by the first gas sensor and the second gas sensor, and estimates concentrations of nitric oxide (NO) and nitride dioxide (NO2) in the exhaust stream therefrom.

    Abstract translation: 公开了一种用于排气后处理的气态还原剂喷射控制系统。 在一个实施方案中，选择性催化还原（SCR）催化剂与从发动机产生的废气流体流体连通。 氧化催化剂（OC）在SCR催化剂的上游并与废气流体连通。 气态还原剂注入器在SCR催化剂的上游并且在OC的下游并与排气流流体连通。 第一气体传感器位于OC的上游，第二气体传感器位于SCR催化剂的下游。 控制器接收代表由第一气体传感器和第二气体传感器在废气流中检测到的气体浓度的信号，并估计排气流中的一氧化氮（NO）和氮氧化物（NO 2）的浓度。

    SYSTEMS AND METHODS FOR ADJUSTING FOR AFTERTREATMENT SYSTEM CONDITION
    22.
    发明申请
    SYSTEMS AND METHODS FOR ADJUSTING FOR AFTERTREATMENT SYSTEM CONDITION 审中-公开

    公开(公告)号：US20190093535A1

    公开(公告)日：2019-03-28

    申请号：US15717911

    申请日：2017-09-27

    Applicant: General Electric Company

    Inventor： Maruthi Narasinga Rao Devarakonda ,  Monika Jonuskeviciute

    IPC: F01N3/20 ,  G05B13/04

    Abstract: A system includes an aftertreatment system configured to treat emissions from an engine via a catalyst and a controller. The controller is configured to obtain one or more engine signals representative of operations of the engine and to execute a model to derive an estimated catalyst emission based on the one or more engine signals and on an expected catalyst degradation. The controller is further configured to obtain one or more catalyst signals representative of catalyst performance, and to generate an adaptation signal configured to improve accuracy of the model based on the one or more catalyst signals. The controller is also configured to apply the adaptation signal and the estimated catalyst emission to generate a urea injection control signal.

    Systems and Methods for Controlling Air-to-Fuel Ratio Based on Catalytic Converter Performance
    27.
    发明申请
    Systems and Methods for Controlling Air-to-Fuel Ratio Based on Catalytic Converter Performance 审中-公开
    基于催化转化器性能控制空燃比的系统和方法

    公开(公告)号：US20160169136A1

    公开(公告)日：2016-06-16

    申请号：US14569225

    申请日：2014-12-12

    Applicant: GENERAL ELECTRIC COMPANY

    Inventor： Maruthi Narasinga Rao Devarakonda ,  Prashant Srinivasan ,  Medy Satria ,  Rohit Mahakali ,  Sharath Sridhar Aramanekoppa

    IPC: F02D41/02 ,  F01N11/00

    CPC classification number: F02D41/0235 ,  F01N11/007 ,  F02D41/0295 ,  F02D41/1454 ,  F02D41/1477 ,  F02D41/22

    Abstract: A system includes a controller that has a processor. The processor is configured to receive a first signal from a first oxygen sensor indicative of a first oxygen measurement and a second signal from a second oxygen sensor indicative of a second oxygen measurement. The first oxygen sensor is disposed upstream of a catalytic converter system and the second oxygen sensor is disposed downstream of the catalytic converter system. The processor is also configured to derive a plurality of oxygen storage estimates based on the first signal, the second signal, and a catalytic converter model. Each of the plurality of oxygen storage estimates represents an oxygen storage estimate for a corresponding cell of a plurality of cells in the catalytic converter system. Further, the processor is configured to derive a system oxygen storage estimate for the catalytic converter system based on the plurality of oxygen storage estimates. The processor is also configured to derive a system oxygen storage setpoint for the catalytic converter system based on the catalytic converter model. The processor is then configured to compare the system oxygen storage estimate to the system oxygen storage setpoint and apply the comparison during control of a gas engine.

    Abstract translation: 系统包括具有处理器的控制器。 处理器被配置为从第一氧传感器接收指示第一氧测量的第一信号和来自指示第二氧测量的第二氧传感器的第二信号。 第一氧传感器设置在催化转化器系统的上游，并且第二氧传感器设置在催化转化器系统的下游。 处理器还被配置为基于第一信号，第二信号和催化转化器模型导出多个氧气存储估计。 多个氧气存储估计值中的每一个代表催化转化器系统中的多个电池的相应电池的氧气储存估计值。 此外，处理器被配置为基于多个氧气存储估计值推导催化转化器系统的系统氧气储存估计。 处理器还被配置为基于催化转化器模型导出催化转化器系统的系统氧气存储设定点。 然后将处理器配置成将系统氧气存储估计与系统氧气存储设定值进行比较，并在气体发动机的控制期间应用比较。

    SILENCER FOR MID-BED AIR INJECTION MIXING
    28.
    发明申请
    SILENCER FOR MID-BED AIR INJECTION MIXING 有权
    中空注射混合器

    公开(公告)号：US20160146081A1

    公开(公告)日：2016-05-26

    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: F01N3/28

    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。

    Gaseous reductant injection control system
    29.
    发明授权
    Gaseous reductant injection control system 有权
    气体还原剂注入控制系统

    公开(公告)号：US09243534B2

    公开(公告)日：2016-01-26

    申请号：US14062098

    申请日：2013-10-24

    Applicant: General Electric Company

    Inventor： Maruthi Narasinga Rao Devarakonda

    IPC: F01N3/00 ,  F01N3/02 ,  F01N3/10 ,  F01N3/20 ,  F01N3/18 ,  F01N9/00 ,  F01N13/00

    CPC classification number: F01N3/18 ,  F01N3/103 ,  F01N3/2066 ,  F01N3/208 ,  F01N9/005 ,  F01N13/009 ,  F01N2560/021 ,  F01N2560/026 ,  F01N2560/06 ,  F01N2560/07 ,  F01N2560/08 ,  F01N2570/14 ,  F01N2610/02 ,  F01N2610/06 ,  F01N2900/0416 ,  F01N2900/1402 ,  F01N2900/1404 ,  F01N2900/1406 ,  F01N2900/1411 ,  Y02T10/24 ,  Y02T10/47

    Abstract: A gaseous reductant injection control system for exhaust aftertreatment is disclosed. In one embodiment, a selective catalytic reduction (SCR) catalyst is in fluid communication with an exhaust stream generated from an engine. An oxidation catalyst (OC) is upstream of the SCR catalyst and in fluid communication with the exhaust stream. A gaseous reductant injector is upstream of the SCR catalyst and downstream of the OC and in fluid communication with the exhaust stream. A first gas sensor is upstream of the OC and a second gas sensor is downstream of the SCR catalyst. A controller receives signals representative of gas concentrations detected in the exhaust stream by the first gas sensor and the second gas sensor, and estimates concentrations of nitric oxide (NO) and nitride dioxide (NO2) in the exhaust stream therefrom.

    Abstract translation: 公开了一种用于排气后处理的气态还原剂喷射控制系统。 在一个实施方案中，选择性催化还原（SCR）催化剂与从发动机产生的废气流体流体连通。 氧化催化剂（OC）在SCR催化剂的上游并与废气流体连通。 气态还原剂注入器在SCR催化剂的上游并且在OC的下游并与排气流流体连通。 第一气体传感器位于OC的上游，第二气体传感器位于SCR催化剂的下游。 控制器接收代表由第一气体传感器和第二气体传感器在废气流中检测到的气体浓度的信号，并估计排气流中的一氧化氮（NO）和氮氧化物（NO 2）的浓度。

    SYSTEMS AND METHODS ADJUSTING FOR AFTERTREATMENT SYSTEM CONDITION
    30.
    发明申请
    SYSTEMS AND METHODS ADJUSTING FOR AFTERTREATMENT SYSTEM CONDITION 审中-公开

    公开(公告)号：US20190093540A1

    公开(公告)日：2019-03-28

    申请号：US15717914

    申请日：2017-09-27

    Applicant: General Electric Company

    Inventor： Maruthi Narasinga Rao Devarakonda ,  Monika Jonuskeviciute

    IPC: F01N9/00 ,  F01N3/10

    Abstract: A system includes an aftertreatment system configured to treat emissions from an engine via a catalyst and a controller. The controller is configured to obtain one or more engine signals representative of operations of the engine and to execute a model to derive an estimated catalyst emission based on the one or more engine signals and on an expected catalyst degradation. The controller is further configured to obtain one or more catalyst signals representative of catalyst performance, and to generate an adaptation signal configured to improve accuracy of the model based on the one or more catalyst signals. The controller is also configured to apply the adaptation signal and the estimated catalyst emission to generate an engine control signal.

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