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    Dual fuel common rail system and diesel only method of operating same
    23.
    发明授权
    Dual fuel common rail system and diesel only method of operating same 有权
    双燃料共轨系统和柴油机操作方式相同

    公开(公告)号：US09228507B2

    公开(公告)日：2016-01-05

    申请号：US13732673

    申请日：2013-01-02

    Applicant: Caterpillar Inc.

    Inventor： Cory A. Brown ,  Joshua W. Steffen ,  Dana R. Coldren ,  Alan R. Stockner ,  Hoisan Kim ,  Dianqi Fang

    IPC: F02M69/50 ,  F02D41/22 ,  F02D19/10

    CPC classification number: F02D19/10 ,  F02D41/22 ,  Y02T10/36

    Abstract: A dual fuel common rail system may be operated in a regular mode in which a relatively large charge of gaseous fuel is ignited by compression igniting a relatively small injection quantity of liquid diesel fuel. The dual fuel system may be operated in a single fuel limp home mode in which liquid diesel fuel is injected at higher pressures. Over pressurization of the gaseous fuel side of the fuel system due to leaked liquid fuel is avoided by regularly injecting leaked liquid fuel, but not gaseous fuel, from the gaseous nozzle outlet set during the limp home mode of operation.

    Abstract translation: 双燃料共轨系统可以以常规模式操作，其中相对较大量的气体燃料通过压缩点燃，点燃相对较小量的液体柴油燃料。 双燃料系统可以在单一燃料跛行家庭模式中操作，其中液体柴油燃料在较高压力下喷射。 由于泄漏的液体燃料，燃料系统的气体燃料侧的过度加压通过在跛行家庭操作模式期间从设置的气体喷嘴出口定期注入泄漏的液体燃料而不是气体燃料来避免。

    In-cylinder dynamic gas blending fuel injector and dual fuel engine
    24.
    发明授权
    In-cylinder dynamic gas blending fuel injector and dual fuel engine 有权
    缸内动态气体混合燃料喷射器和双燃料发动机

    公开(公告)号：US09157384B2

    公开(公告)日：2015-10-13

    申请号：US13741851

    申请日：2013-01-15

    Applicant: Caterpillar, Inc.

    Inventor： Dana R. Coldren ,  Cory A. Brown

    IPC: F02D19/06 ,  F02D19/08 ,  F02M43/04 ,  F02M47/02 ,  F02M45/08 ,  F02D19/10

    CPC classification number: F02D19/0642 ,  F02D19/0694 ,  F02D19/08 ,  F02D19/10 ,  F02M43/04 ,  F02M45/086 ,  F02M47/027 ,  Y02T10/36

    Abstract: A dual fuel engine utilizes a compression ignited pilot injection of liquid diesel fuel to ignite a mixture of gaseous fuel and air in each engine cylinder. The gaseous fuel is injected at a relatively low pressure directly into the engine cylinder from a fuel injector. The liquid diesel fuel is injected directly into the engine cylinder from the same fuel injector. In-cylinder dynamic gas blending during the compression stroke can reduce potential hydrocarbon slip that could occur when unburned fuel resides in crevice volumes within the engine cylinder.

    Abstract translation: 双燃料发动机利用液化柴油燃料的压缩点火引燃喷射来点燃每个发动机气缸中的气体燃料和空气的混合物。 气体燃料以相对低的压力从燃料喷射器直接喷射到发动机气缸中。 液体柴油由相同的燃料喷射器直接注入发动机气缸。 在压缩冲程期间的缸内动态气体混合可以减少当未燃燃料位于发动机气缸内的缝隙体积时可能发生的潜在碳氢化合物滑移。

    Compressed natural gas fuel mass control system
    25.
    发明授权
    Compressed natural gas fuel mass control system 有权
    压缩天然气燃料质量控制系统

    公开(公告)号：US09091240B2

    公开(公告)日：2015-07-28

    申请号：US13749011

    申请日：2013-01-24

    Applicant: Caterpillar Inc.

    Inventor： Steven Thomas Grant ,  Frank Lombardi ,  Daniel Reese Puckett ,  Cory A. Brown ,  Joshua Wayne Steffen ,  Paul Joseph Desiderio

    IPC: F02G5/00 ,  F02M69/00 ,  F02M21/02 ,  F02D19/02

    CPC classification number: F02M69/00 ,  F02D19/02 ,  F02M21/02 ,  F02M21/0218 ,  F02M21/023 ,  F02M21/0236 ,  F02M21/0239 ,  Y02T10/32

    Abstract: A system, related method and computer program product are disclosed for controlling fuel mass of CNG received by an engine. The system may comprise a heat exchanger configured to receive CLNG and supply coolant and to output CNG and return coolant, an injector configured to inject CNG into the engine, a gas line between the injector and heat exchanger, a control valve configured to receive return coolant from the heat exchanger and to change the amount of return coolant flowing through control valve, and a controller connected to the control valve. The gas line may be configured to carry CNG from the heat exchanger to the injector. The controller may be configured to maintain a Gas Line Temperature within an operating range by adjusting the amount of return coolant flowing through the control valve based, at least in part, on the Gas Line Temperature and a Target Return Coolant Temperature.

    Abstract translation: 公开了一种用于控制由发动机接收的CNG的燃料质量的系统，相关方法和计算机程序产品。 该系统可以包括热交换器，其被配置为接收CLNG并供应冷却剂并输出CNG并返回冷却剂;配置成将CNG注入发动机的喷射器，喷射器和热交换器之间的气体管线;配置成接收返回冷却剂的控制阀 并且改变流过控制阀的冷却剂回流量，以及连接到控制阀的控制器。 气体管线可以被配置为将CNG从热交换器运送到喷射器。 控制器可以被配置为通过至少部分地基于气体管线温度和目标返回冷却剂温度调节流过控制阀的回流冷却剂的量来将气体管线温度维持在工作范围内。

    Dual fuel injector with off set check biasing springs
    26.
    发明授权
    Dual fuel injector with off set check biasing springs 有权
    双燃油喷射器，带偏心弹簧

    公开(公告)号：US09046067B2

    公开(公告)日：2015-06-02

    申请号：US13630212

    申请日：2012-09-28

    Applicant: Caterpillar Inc.

    Inventor： Cory A. Brown ,  Adrienne M. Brasche

    IPC: F02M63/00

    CPC classification number: F02M63/00 ,  F02M43/04 ,  F02M45/086 ,  F02M47/027 ,  F02M61/20

    Abstract: A fuel injector has the ability to inject two fuels that differ in at least one of pressure, chemical identity and matter phase, such as liquid diesel fuel and nature gas. A first direct operated check includes a closing hydraulic surface exposed to fluid pressure in a first control chamber, and is normally biased toward a closed position by a first spring. A second direct operated check has a closing hydraulic surface exposed to fluid pressure in a second control chamber, and is biased toward a closed position with a second spring. The first spring and the second spring are located on opposite sides of a plane oriented perpendicular to a long axis of the injector body, in part to satisfy packaging constraints when the direct operated checks are arranged in a side by side parallel configuration.

    Abstract translation: 燃料喷射器具有注入在压力，化学特性和物质相中的至少一种不同的两种燃料的能力，例如液体柴油燃料和天然气。 第一直接操作检查包括在第一控制室中暴露于流体压力的关闭液压表面，并且通常由第一弹簧偏压到关闭位置。 第二直接操作检查具有在第二控制室中暴露于流体压力的关闭液压表面，并且利用第二弹簧偏压到关闭位置。 第一弹簧和第二弹簧位于垂直于喷射器主体的长轴定向的平面的相对侧上，部分以满足直接操作检查并排配置的包装约束。

    DUAL FUEL COMMON RAIL SYSTEM AND DIESEL ONLY METHOD OF OPERATING SAME
    27.
    发明申请
    DUAL FUEL COMMON RAIL SYSTEM AND DIESEL ONLY METHOD OF OPERATING SAME 有权
    双燃料通用铁路系统和柴油仅操作方法

    公开(公告)号：US20140182552A1

    公开(公告)日：2014-07-03

    申请号：US13732673

    申请日：2013-01-02

    Applicant: CATERPILLAR INC.

    Inventor： Cory A. Brown ,  Joshua W. Steffen ,  Dana R. Coldren ,  Alan R. Stockner ,  Hoisan Kim ,  Dianqi Fang

    IPC: F02M69/50

    CPC classification number: F02D19/10 ,  F02D41/22 ,  Y02T10/36

    Abstract: A dual fuel common rail system may be operated in a regular mode in which a relatively large charge of gaseous fuel is ignited by compression igniting a relatively small injection quantity of liquid diesel fuel. The dual fuel system may be operated in a single fuel limp home mode in which liquid diesel fuel is injected at higher pressures. Over pressurization of the gaseous fuel side of the fuel system due to leaked liquid fuel is avoided by regularly injecting leaked liquid fuel, but not gaseous fuel, from the gaseous nozzle outlet set during the limp home mode of operation.

    Abstract translation: 双燃料共轨系统可以以常规模式操作，其中相对较大量的气体燃料通过压缩点燃，点燃相对较小量的液体柴油燃料。 双燃料系统可以在单一燃料跛行家庭模式中操作，其中液体柴油燃料在较高压力下喷射。 由于泄漏的液体燃料，燃料系统的气体燃料侧的过度加压通过在跛行家庭操作模式期间从设置的气体喷嘴出口定期注入泄漏的液体燃料而不是气体燃料来避免。

    Auxiliary Power and Emission-Control System Using Vented Gaseous Fuel Recovery and Method
    28.
    发明申请
    Auxiliary Power and Emission-Control System Using Vented Gaseous Fuel Recovery and Method 有权
    辅助动力和排放控制系统采用排气气体燃料回收和方法

    公开(公告)号：US20140157764A1

    公开(公告)日：2014-06-12

    申请号：US13709460

    申请日：2012-12-10

    Applicant: CATERPILLAR INC.

    Inventor： Cory A. Brown

    IPC: F01N3/00

    CPC classification number: F01N13/009 ,  F01N3/103 ,  F01N3/2066 ,  F01N2240/25 ,  Y02T10/24

    Abstract: A system includes a main engine operating on gaseous fuel from a tank. An auxiliary engine operates using gaseous fuel vented from the tank. A first exhaust passage receives a first stream of exhaust gas from the main engine. A second exhaust passage receives exhaust gas from the auxiliary engine, which passes through an ammonia-producing catalyst. A third exhaust passage is fluidly connected to the first and second exhaust passages and routes exhaust gas through a NOx reducing catalyst. The system operates such that a mass flow of ammonia generated by the ammonia-producing catalyst substantially matches a total mass flow of NOx gas in the third exhaust passage that is treated within the ammonia-producing catalyst.

    Abstract translation: 一个系统包括一个主缸，它运行在一个罐子上的气态燃料上。 辅助发动机使用从罐排出的气体燃料。 第一排气通道从主发动机接收第一废气流。 第二排气通道从辅助发动机接收废气，其通过产氨催化剂。 第三排气通道流体地连接到第一和第二排气通道，并且排出废气通过NOx还原催化剂。 该系统操作使得由氨生产催化剂产生的氨的质量流量基本上与在氨生产催化剂内处理的第三排气通道中的NOx气体的总质量流量相匹配。

    Piston cartridge for piston pump
    30.
    发明授权
    Piston cartridge for piston pump 有权

    公开(公告)号：US10273955B2

    公开(公告)日：2019-04-30

    申请号：US15352284

    申请日：2016-11-15

    Applicant: Caterpillar Inc.

    Inventor： Sunil J. Bean ,  Cory A. Brown

    IPC: F04B53/16 ,  F04B15/08 ,  F04B9/109 ,  F04B53/14 ,  F04B23/02 ,  F04B1/12 ,  F04B9/117

    Abstract: A hydraulic piston pump includes a reciprocal piston disposed in a blind housing bore of a piston housing to generate a pumping action. To accommodate the piston, a piston cartridge is installed in each of the housing bores. The piston cartridge includes a piston sleeve having an inner sleeve periphery, a first outer sleeve periphery, and a second outer sleeve periphery. The inner sleeve periphery is configured to establish sliding contact with the piston. The first outer sleeve periphery has a first outer sleeve diameter that is larger than a second outer sleeve diameter of the second outer sleeve periphery. To seal against the blind housing bore, a liner cap having a cylindrical liner wall and an axial liner cover is disposed over the first outer sleeve periphery. The axial liner cover abuts a housing bore ceiling of the blind housing bore and can receive hydraulic fluid there through.

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