Variable discharge fuel pump
    2.
    发明授权
    Variable discharge fuel pump 有权
    可变排放燃油泵

    公开(公告)号:US07517200B2

    公开(公告)日:2009-04-14

    申请号:US10874210

    申请日:2004-06-24

    IPC分类号: F04B43/12 F04B49/06

    CPC分类号: F04B49/24

    摘要: A pump has a housing defining at least one pumping chamber, and a plunger slidably disposed within the at least one pumping chamber. The plunger is movable between a first and second spaced apart end positions to pressurize a fluid. The pump also has a driver operatively engaged with the plunger to move the plunger between the first end position and the second end position. The pump further has a high-pressure outlet in fluid communication with the at least one pumping chamber. The high pressure outlet passes pressurized fluid during movement of the plunger between the first end position and the second end position. The passing of pressurized fluid through the high-pressure outlet terminates before the plunger completes movement from the first end position to the second end position.

    摘要翻译: 泵具有限定至少一个泵送室的壳体和可滑动地设置在所述至少一个泵送室内的柱塞。 柱塞可以在第一和第二间隔开的端部位置之间移动以对流体加压。 泵还具有与柱塞可操作地接合的驱动器,以在第一端部位置和第二端部位置之间移动柱塞。 泵还具有与至少一个泵送室流体连通的高压出口。 高压出口在柱塞在第一端位置和第二端位置之间运动期间通过加压流体。 加压流体通过高压出口的通过在柱塞从第一端部位置移动到第二端部位置之前终止。

    Hydraulically-actuated fuel injector with rate shaping through
restricted flow to intensifier piston
    3.
    发明授权
    Hydraulically-actuated fuel injector with rate shaping through restricted flow to intensifier piston 失效
    液压致动式燃油喷射器,通过限制流量增加活塞的速率成形

    公开(公告)号:US06085992A

    公开(公告)日:2000-07-11

    申请号:US196273

    申请日:1998-11-19

    摘要: A hydraulically actuated fuel injector includes an injector body containing an intensifier piston with a hydraulic surface exposed to fluid pressure in a hydraulic pressure cavity. This hydraulic surface includes an annular taper and moves within a bore due to the pressure in the hydraulic pressure cavity. Prior to the injection event, the intensifier piston is in a retracted position that partially blocks at least one actuation fluid supply passage. At the initiation of the injection event, the partial blocking of the actuation fluid passage results in a slower initial movement rate of the intensifier piston. The injection flow rate is a function of the speed of the intensifier piston. The initial rate shaping is accomplished by controlling the initial speed of the intensifier piston by at least partially blocking one or more of the actuation fluid supply passages.

    摘要翻译: 液压致动燃料喷射器包括喷射器主体,其包含具有暴露于液压腔中的流体压力的液压表面的增压器活塞。 该液压表面包括环形锥形并由于液压腔中的压力在孔内移动。 在注射事件之前,增压器活塞处于缩回位置,其部分地阻挡至少一个致动流体供应通道。 在注射事件开始时,致动流体通道的部分阻塞导致增压器活塞的初始移动速率较慢。 喷射流量是增压器活塞速度的函数。 通过至少部分地阻挡一个或多个致动流体供应通道来控制增压器活塞的初始速度来实现初始速率成形。

    Hydraulically-actuated fuel injector with rate shaping spool control
valve
    4.
    发明授权
    Hydraulically-actuated fuel injector with rate shaping spool control valve 失效
    具有速率成形阀芯控制阀的液压致动燃油喷射器

    公开(公告)号:US6053421A

    公开(公告)日:2000-04-25

    申请号:US81253

    申请日:1998-05-19

    申请人: Scott A. Chockley

    发明人: Scott A. Chockley

    摘要: A hydraulically-actuated fuel injector includes an injector body that defines an actuation fluid inlet, a first actuation fluid cavity, a second actuation fluid cavity and a nozzle outlet. A piston is positioned in the injector body and is moveable between a retracted position and an advanced position. The piston has a primary hydraulic surface exposed to fluid in the first actuation fluid cavity, and an opposing hydraulic surface exposed to fluid in the second actuation fluid cavity. A control valve includes a spool valve member that is moveable a distance between a first position and a second position. The first actuation fluid cavity is closed to the actuation fluid inlet when the spool valve member is in its first position. The first actuation fluid cavity is open, but the second actuation fluid cavity is closed, to the actuation fluid inlet when the spool valve member is moving through a first portion of the distance. The first actuation fluid cavity and the second actuation fluid cavity are open to the actuation fluid inlet when the spool valve member is moving through a second portion of the distance. The first actuation fluid cavity is open to the actuation fluid inlet when the spool valve member is in its second position.

    摘要翻译: 液压致动燃料喷射器包括限定致动流体入口,第一致动流体腔,第二致动流体腔和喷嘴出口的喷射器主体。 活塞位于注射器主体中并且可在缩回位置和前进位置之间移动。 活塞具有暴露于第一致动流体腔中的流体的主液压表面和暴露于第二致动流体腔中的流体的相对液压表面。 控制阀包括可在第一位置和第二位置之间移动距离的滑阀构件。 当滑阀构件处于其第一位置时,第一致动流体腔被关闭到致动流体入口。 当滑阀构件移动通过该距离的第一部分时,第一致动流体腔是敞开的,但是第二致动流体腔被关闭到致动流体入口。 当滑阀构件移动通过距离的第二部分时,第一致动流体腔和第二致动流体腔对致动流体入口开放。 当滑阀构件处于其第二位置时,第一致动流体腔向致动流体入口开口。

    Jumper tube with improved misalignment capability
    5.
    发明授权
    Jumper tube with improved misalignment capability 失效
    跳线管具有改善的不对准能力

    公开(公告)号:US5983864A

    公开(公告)日:1999-11-16

    申请号:US996888

    申请日:1997-12-23

    IPC分类号: F02M55/02 F02M57/02 F02M37/04

    CPC分类号: F02M57/025 F02M55/02

    摘要: A jumper tube with improved misalignment capability comprising a cylindrically shaped receiver portion having a central bore that receives an electronically controlled hydraulically actuated unit fuel injector, an annular groove disposed adjacent each end of the bore, a resilient seal ring disposed in each annular groove, forming a seal between the injector and the bore and providing three degrees of freedom between the injector and bore, a tubular portion having an elongated passage in fluid communication with the bore and a conduit in fluid communication with an actuating fluid manifold and the elongated passage and a bolt extending through the tubular portion, the conduit portion and a portion of the actuating fluid manifold removably attaching the jumper tube to a head of an internal combustion engine.

    摘要翻译: 具有改进的不对准能力的跨接管包括圆柱形接收器部分,该接收器部分具有接收电子控制的液压致动单元燃料喷射器的中心孔,邻近孔的每个端部设置的环形槽,设置在每个环形槽中的弹性密封环, 注射器和孔之间的密封并且在注射器和孔之间提供三个自由度,管状部分具有与孔流体连通的细长通道和与致动流体歧管和细长通道流体连通的导管和 螺栓延伸穿过管状部分,导管部分和致动流体歧管的一部分可拆卸地将跳线连接到内燃机的头部。