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    STOICHIOMETRIC ENGINE SYSTEM UTILIZING THREE-WAY CATALYST UPSTREAM OF TURBINE
    1.
    发明申请
    STOICHIOMETRIC ENGINE SYSTEM UTILIZING THREE-WAY CATALYST UPSTREAM OF TURBINE 有权

    公开(公告)号：US20210040922A1

    公开(公告)日：2021-02-11

    申请号：US16531463

    申请日：2019-08-05

    Applicant: Caterpillar Inc.

    Inventor： Ronald Silver ,  Jaswinder Singh ,  David M. Ginter ,  Paul Wang ,  Michael Bardell

    IPC: F02M26/35 ,  F02M26/05 ,  F01N3/10 ,  F02M26/15 ,  F02M26/23 ,  F02M26/46

    Abstract: The present disclosure relates to exhaust treatment systems and engine systems. In one implementation, an engine system comprises an engine comprising an intake manifold and an exhaust manifold, the engine configured to combust a fuel-air mixture received via the intake manifold and produce a flow of exhaust gases via the exhaust manifold. The engine system also comprises a turbocharger comprising a turbine, an exhaust passageway fluidly connecting the exhaust manifold of the engine to the turbine and an intake passageway fluidly connected to the intake manifold of the engine for supplying the fuel-air mixture, a catalyzed member positioned along the exhaust passageway between the engine and the turbine, and an exhaust gas recirculation (EGR) loop fluidly connected downstream of the catalyzed member and fluidly connected to the exhaust passageway and the intake passageway.

    Exhaust Treatment System with Particulate Filter Having Wall-Flow and Flow-Through Channels
    3.
    发明申请
    Exhaust Treatment System with Particulate Filter Having Wall-Flow and Flow-Through Channels 有权
    具有壁流和流通通道的颗粒过滤器排气处理系统

    公开(公告)号：US20170056824A1

    公开(公告)日：2017-03-02

    申请号：US14841949

    申请日：2015-09-01

    Applicant: Caterpillar Inc.

    Inventor： Anthony Rodman ,  Ronald Silver ,  Sylvain Charbonnel

    IPC: B01D53/94 ,  F01N3/20 ,  F01N3/021

    CPC classification number: B01D53/9431 ,  B01D53/9418 ,  B01D53/9477 ,  B01D2251/2062 ,  B01D2251/2067 ,  B01D2255/1021 ,  B01D2255/1023 ,  B01D2255/1025 ,  B01D2255/904 ,  B01D2255/9155 ,  B01D2258/012 ,  F01N3/021 ,  F01N3/2066

    Abstract: In one aspect, an exhaust treatment system includes a first particulate filter that has an oxidation catalyst and receives an exhaust stream from an engine. The first particulate filter has a first filter body that defines a plurality of flow-through channels, each open on the inlet and outlet sides of the first filter body. The first filter body also defines a plurality of wall-flow channels, each open on one of the inlet and outlet sides and closed on the other of the inlet and outlet sides. The system also has a second particulate filter that receives the exhaust stream from the first particulate filter. The second particulate filter has a second filter body that defines a plurality of wall-flow channels, each open on one of the inlet and outlet sides of the second particulate filter and closed on the other of the inlet and outlet sides of the second particulate filter.

    Abstract translation: 一方面，废气处理系统包括具有氧化催化剂并接收来自发动机的排气流的第一颗粒过滤器。 第一颗粒过滤器具有限定多个流通通道的第一过滤体，每个通道在第一过滤体的入口侧和出口侧均打开。 第一过滤器主体还限定多个壁流通道，每个通道在入口侧和出口侧之一上开口，并且在入口侧和出口侧的另一个上封闭。 该系统还具有接收来自第一颗粒过滤器的废气流的第二颗粒过滤器。 第二颗粒过滤器具有限定多个壁流通道的第二过滤体，每个壁流通道在第二微粒过滤器的入口侧和出口侧之一上开口，并且在第二微粒过滤器的入口侧和出口侧的另一个上封闭 。

    After-treatment system and method for six-stroke combustion cycle
    4.
    发明授权
    After-treatment system and method for six-stroke combustion cycle 有权
    六冲程燃烧循环后处理系统及方法

    公开(公告)号：US09181830B2

    公开(公告)日：2015-11-10

    申请号：US13712254

    申请日：2012-12-12

    Applicant: Caterpillar Inc.

    Inventor： Ronald Silver ,  Scott B. Fiveland ,  D. Ryan Williams

    IPC: F01N3/10 ,  F02B17/00 ,  F02D13/02 ,  F02B75/02 ,  F02D41/02 ,  F01N3/08 ,  F01N3/20 ,  F02M25/07 ,  F02M23/00

    CPC classification number: F01N3/10 ,  F01N3/0814 ,  F01N3/0842 ,  F01N3/2066 ,  F02B75/021 ,  F02B2275/14 ,  F02D13/0273 ,  F02D41/0275 ,  F02M26/05 ,  F02M26/06 ,  F02M26/23 ,  F02M2023/008 ,  Y02T10/123 ,  Y02T10/18 ,  Y02T10/24

    Abstract: An internal combustion engine operates on a six-stroke combustion cycle including a first compression stroke, a first power stroke, a second compression stroke, and a second power stroke. A first fuel charge is introduced to a combustion chamber of the engine at a first fuel rate during the first compression and/or first power stroke to produce lean exhaust gasses. A second fuel charge is also introduced to the combustion chamber during the second compression and/or second power stroke to normally produce lean exhaust gasses. Periodically, the second fuel charge can be increased to a second fuel rate to produce stoichiometric rich exhaust gasses. A lean nitrogen oxide trap can be disposed in an exhaust system associated with the engine to temporarily trap nitrogen oxides. Once saturated, the LNT can be periodically regenerated by production of the rich exhaust gasses.

    Abstract translation: 内燃机在包括第一压缩冲程，第一动力冲程，第二压缩冲程和第二动力冲程的六冲程燃烧循环中操作。 在第一压缩和/或第一动力冲程期间以第一燃料速率将第一燃料装料引入发动机的燃烧室以产生贫废气。 在第二压缩和/或第二功率冲程期间，第二燃料装料也被引入燃烧室，以正常地产生贫排气。 周期性地，第二燃料充量可以增加到第二燃料速率以产生化学计量的富排气。 贫氮氧化物捕集器可以设置在与发动机相关联的排气系统中以暂时捕获氮氧化物。 一旦饱和，可以通过生产富排气来定期再生LNT。

    Stoichiometric engine system utilizing three-way catalyst upstream of turbine
    5.
    发明授权
    Stoichiometric engine system utilizing three-way catalyst upstream of turbine 有权

    公开(公告)号：US11261830B2

    公开(公告)日：2022-03-01

    申请号：US16531463

    申请日：2019-08-05

    Applicant: Caterpillar Inc.

    Inventor： Ronald Silver ,  Jaswinder Singh ,  David M. Ginter ,  Paul Wang ,  Michael Bardell

    IPC: F02M26/35 ,  F02M26/05 ,  F01N3/10 ,  F02M26/23 ,  F02M26/46 ,  F02M26/15 ,  F02M26/00

    Abstract: The present disclosure relates to exhaust treatment systems and engine systems. In one implementation, an engine system comprises an engine comprising an intake manifold and an exhaust manifold, the engine configured to combust a fuel-air mixture received via the intake manifold and produce a flow of exhaust gases via the exhaust manifold. The engine system also comprises a turbocharger comprising a turbine, an exhaust passageway fluidly connecting the exhaust manifold of the engine to the turbine and an intake passageway fluidly connected to the intake manifold of the engine for supplying the fuel-air mixture, a catalyzed member positioned along the exhaust passageway between the engine and the turbine, and an exhaust gas recirculation (EGR) loop fluidly connected downstream of the catalyzed member and fluidly connected to the exhaust passageway and the intake passageway.

    Apparatus and method for detecting urea deposit formation
    6.
    发明授权
    Apparatus and method for detecting urea deposit formation 有权

    公开(公告)号：US10550744B2

    公开(公告)日：2020-02-04

    申请号：US15127988

    申请日：2015-04-01

    Applicant: Caterpillar Inc. ,  Perkins Engines Company Limited

    Inventor： Ronald Silver ,  Benjamin Reid ,  Thomas Steffen

    IPC: F01N3/20 ,  B01D53/94 ,  F01N11/00 ,  F01N13/00 ,  F02D41/02

    Abstract: An apparatus for detecting urea deposits in an exhaust pipe of an internal combustion engine is provided, where the urea is introduced into the exhaust pipe in an aqueous urea solution via a nozzle. The apparatus comprises at least one radiation receiver which, in use, is located within the exhaust pipe downstream of the nozzle. The apparatus further comprises an electronic control unit in communication with the receiver, wherein the receiver communicates radiation data to the control unit which allows the control unit to establish whether deposits have formed within the exhaust pipe. A control valve is also provided which controls flow of the solution to the nozzle in response to signals from the control unit. A method of detecting urea deposits in an exhaust pipe of an internal combustion engine is also provided, as in an automotive vehicle incorporating the aforementioned apparatus.

    After-Treatment System and Method for Six-Stroke Combustion Cycle
    9.
    发明申请
    After-Treatment System and Method for Six-Stroke Combustion Cycle 有权
    六冲程燃烧循环后处理系统及方法

    公开(公告)号：US20140158087A1

    公开(公告)日：2014-06-12

    申请号：US13712254

    申请日：2012-12-12

    Applicant: CATERPILLAR INC.

    Inventor： Ronald Silver ,  Scott B. Fiveland ,  D. Ryan Williams

    IPC: F02B17/00 ,  F01N3/10

    CPC classification number: F01N3/10 ,  F01N3/0814 ,  F01N3/0842 ,  F01N3/2066 ,  F02B75/021 ,  F02B2275/14 ,  F02D13/0273 ,  F02D41/0275 ,  F02M26/05 ,  F02M26/06 ,  F02M26/23 ,  F02M2023/008 ,  Y02T10/123 ,  Y02T10/18 ,  Y02T10/24

    Abstract: An internal combustion engine operates on a six-stroke combustion cycle including a first compression stroke, a first power stroke, a second compression stroke, and a second power stroke. A first fuel charge is introduced to a combustion chamber of the engine at a first fuel rate during the first compression and/or first power stroke to produce lean exhaust gasses. A second fuel charge is also introduced to the combustion chamber during the second compression and/or second power stroke to normally produce lean exhaust gasses. Periodically, the second fuel charge can be increased to a second fuel rate to produce stoichiometric rich exhaust gasses. A lean nitrogen oxide trap can be disposed in an exhaust system associated with the engine to temporarily trap nitrogen oxides. Once saturated, the LNT can be periodically regenerated by production of the rich exhaust gasses.

    Abstract translation: 内燃机在包括第一压缩冲程，第一动力冲程，第二压缩冲程和第二动力冲程的六冲程燃烧循环中操作。 在第一压缩和/或第一动力冲程期间以第一燃料速率将第一燃料装料引入发动机的燃烧室以产生贫废气。 在第二压缩和/或第二功率冲程期间，第二燃料装料也被引入燃烧室，以正常地产生贫排气。 周期性地，第二燃料充量可以增加到第二燃料速率以产生化学计量的富排气。 贫氮氧化物捕集器可以设置在与发动机相关联的排气系统中以暂时捕获氮氧化物。 一旦饱和，可以通过生产富排气来定期再生LNT。

    After-Treatment System and Method for Six-Stroke Combustion Cycle
    10.
    发明申请
    After-Treatment System and Method for Six-Stroke Combustion Cycle 审中-公开
    六冲程燃烧循环后处理系统及方法

    公开(公告)号：US20140157758A1

    公开(公告)日：2014-06-12

    申请号：US13712182

    申请日：2012-12-12

    Applicant: CATERPILLAR INC.

    Inventor： Ronald Silver ,  Scott B. Fiveland ,  D. Ryan Williams

    IPC: F01N3/20 ,  F01N3/10

    CPC classification number: F01N3/2066 ,  F01N3/103 ,  F01N3/208 ,  F01N2610/02 ,  Y02T10/24

    Abstract: A method and system of operating an internal combustion engine on a six-stroke cycle utilizes an after-treatment system to reduce emissions such as nitrogen oxides. The method and system introduce a first fuel charge to a combustion chamber and combusts the first fuel charge to produce a first stoichiometric lean condition. The method and system next introduce a second fuel charge and combust the second fuel charge to produce a second stoichiometric lean conditions. The exhaust gasses are then directed to a selective catalytic reduction catalyst with a reductant agent to reduce the nitrogen oxides to nitrogen and water.

    Abstract translation: 在六冲程循环中操作内燃机的方法和系统利用后处理系统来减少氮氧化物的排放。 该方法和系统向燃烧室引入第一燃料装料并燃烧第一燃料装料以产生第一化学计量的稀薄条件。 该方法和系统接下来引入第二燃料电荷并燃烧第二燃料电荷以产生第二化学计量的稀薄条件。 然后将废气导入具有还原剂的选择性催化还原催化剂以将氮氧化物还原成氮和水。

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