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    DUAL FUEL SYSTEM FOR ENGINE HAVING FUEL-ACTUATED FUEL PUMP AND METHOD
    1.
    发明申请
    DUAL FUEL SYSTEM FOR ENGINE HAVING FUEL-ACTUATED FUEL PUMP AND METHOD 有权

    公开(公告)号：US20250101926A1

    公开(公告)日：2025-03-27

    申请号：US18373396

    申请日：2023-09-27

    Applicant: Caterpillar Inc.

    Inventor： Hoisan Kim ,  Jack A. Merchant

    IPC: F02D19/06

    Abstract: A dual fuel system includes a first pressurized fuel reservoir, a first fuel pump fluidly connected to the first pressurized fuel reservoir, a second pressurized fuel reservoir, and a second fuel pump including a pump outlet fluidly connected to the second pressurized fuel reservoir, a pumping chamber, an actuating fluid inlet fluidly connected to at least one of the first fuel pump or the first pressurized fuel reservoir, and at least one pumping element. The first fuel pump may have excess capacity, at least at times, so as to provide a pressurized first fuel for actuating the second fuel pump. The at least one pumping element may include an intensifier or de-intensifier plunger such that a flow rate of a second pressurized fuel from the second fuel pump is different than a flow rate of the first pressurized fuel from the first fuel pump as an actuating fluid for the second fuel pump. Related apparatus and methodology is also disclosed.

    Switching fuel rail for a diesel fuel engine
    2.
    发明授权
    Switching fuel rail for a diesel fuel engine 有权

    公开(公告)号：US12085050B2

    公开(公告)日：2024-09-10

    申请号：US18049719

    申请日：2022-10-26

    Applicant: Caterpillar Inc.

    Inventor： Hoisan Kim ,  Arnold Myoungjin Kim ,  Dana Ray Coldren ,  Eric Lee Schroeder

    IPC: F02M55/02 ,  F02D19/06

    CPC classification number: F02M55/025 ,  F02D19/0613 ,  F02D19/0694

    Abstract: An internal combustion engine system is described herein. The system uses a switching rail in combination with a first fuel rail to operate the internal combustion engine of the system. The first fuel rail receives the first fuel for combustion within one or more of the combustion cylinders of the internal combustion engine. The switching rails are configured to receive either the first fuel or a second fuel. A controller is used to operate a switching valve that, depending on the position of the switching valve, routes or directs either the second fuel or the first fuel from their respective fuel tanks. In a switching condition, such as startup, shutdown, or when the second fuel is not available, the controller can use the first fuel as the alternate source of fuel provided through the switching rail.

    Fuel injector
    3.
    发明授权
    Fuel injector 有权

    公开(公告)号：US11067028B2

    公开(公告)日：2021-07-20

    申请号：US16248907

    申请日：2019-01-16

    Applicant: Caterpillar Inc.

    Inventor： Hoisan Kim ,  Robert M. Campion ,  Steven C. Taylor ,  Bao Feng

    IPC: F02D41/40 ,  F02M61/04 ,  F02M57/00

    Abstract: A fuel injector system includes an injector body having a proximal end and a distal end, the injector body defining a nozzle having an outlet. The injector system includes a spill valve fluidly connected to the outlet and having a spill valve member movable between an open position and a closed position. The injector system includes a control valve including a control valve member movable between an open position and a closed position. The injector system includes a check valve fluidly connected to the outlet, the control valve including a check valve needle movable between an open position and a closed position. The injector system also includes an electrical monitoring circuit configured to output a signal indicative of at least one of the open position or the closed position of the spill valve member.

    Dynamic Seal for Fuel Injector Needle Check
    5.
    发明申请
    Dynamic Seal for Fuel Injector Needle Check 有权
    燃油喷射针检查动态密封

    公开(公告)号：US20160305382A1

    公开(公告)日：2016-10-20

    申请号：US14689307

    申请日：2015-04-17

    Applicant: Caterpillar Inc.

    Inventor： Hoisan Kim

    IPC: F02M43/04

    CPC classification number: F02M43/04 ,  F02D19/0694 ,  F02D19/10 ,  F02M61/12 ,  F02M2200/16 ,  F02M2200/44 ,  Y02T10/36

    Abstract: A fuel injector includes an injector body defining a liquid fuel passage, a gaseous fuel passage, and a first guide bore; a gaseous fuel check guided within the first guide bore between a retracted position and an advanced position to selectively open and block, respectively, fluid communication between the gaseous fuel passage and a gaseous fuel nozzle outlet; and a sleeve seal seated within the first guide bore, the sleeve seal having an inner surface defining a sleeve seal bore therethrough, and at least a portion of the gaseous fuel check is disposed within the sleeve seal bore; an outer surface of the sleeve seal including a first portion and a second portion, the first portion being disposed closer to a longitudinal axis of the sleeve seal bore along a radial direction than the second portion.

    Abstract translation: 燃料喷射器包括限定液体燃料通道，气体燃料通道和第一引导孔的喷射器主体; 引导在第一引导孔内的气体燃料检查器在缩回位置和前进位置之间，分别选择性地打开和阻止气体燃料通道和气体燃料喷嘴出口之间的流体连通; 以及套筒密封件，其位于所述第一引导孔内，所述套筒密封件具有限定穿过其中的套筒密封孔的内表面，并且所述气体燃料检查件的至少一部分设置在所述套筒密封孔内; 所述套筒密封件的外表面包括第一部分和第二部分，所述第一部分沿径向方向设置成比所述第二部分更靠近所述套筒密封孔的纵向轴线。

    Dual Fuel Injector With F, A And Z Orifice Control
    6.
    发明申请
    Dual Fuel Injector With F, A And Z Orifice Control 有权
    双燃油喷射器带F，A和Z孔控制

    公开(公告)号：US20140311455A1

    公开(公告)日：2014-10-23

    申请号：US13866481

    申请日：2013-04-19

    Applicant: CATERPILLAR, INC.

    Inventor： Hoisan Kim ,  Mark F. Sommars

    IPC: F02M43/04

    CPC classification number: F02M43/04 ,  F02D19/0694 ,  F02D19/10 ,  F02M21/0248 ,  F02M45/086 ,  Y02T10/36

    Abstract: A dual fuel injector utilizes first and second control valves to open and close first and second nozzle outlet sets to inject a first fuel and a second fuel, respectively. The first and second fuels may be natural gas and liquid diesel, respectively. Control over liquid and diesel fuel injection events includes control lines that include F, A and Z orifices.

    Abstract translation: 双燃料喷射器利用第一和第二控制阀打开和关闭第一和第二喷嘴出口组，以分别注入第一燃料和第二燃料。 第一和第二燃料可以分别是天然气和液体柴油。 控制液体和柴油燃料喷射事件包括控制线，包括F，A和Z孔。

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