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    PUMP UNIT AND METHOD OF OPERATING THE SAME
    1.
    发明申请
    PUMP UNIT AND METHOD OF OPERATING THE SAME 审中-公开
    泵单元及其操作方法

    公开(公告)号：WO2014037146A1

    公开(公告)日：2014-03-13

    申请号：PCT/EP2013/065536

    申请日：2013-07-23

    Applicant: DELPHI TECHNOLOGIES HOLDING S.À.R.L.

    Inventor： MALE, Andrew ,  HARCOMBE, Anthony

    IPC: F02M59/46 ,  F02M59/36 ,  F02M63/00

    CPC classification number: F04B7/0076 ,  F02M59/02 ,  F02M59/027 ,  F02M59/34 ,  F02M59/36 ,  F02M59/367 ,  F02M59/466 ,  F02M63/0024 ,  F02M63/0033 ,  F04B7/02 ,  F04B53/109 ,  F04B53/1092

    Abstract: The present application relates to a pump unit (1) for a fuel injection system. The pump unit (1) has a low pressure fuel supply line (11) and a high pressure fuel outlet (13). A pumping chamber (5) having a plunger (15) is operable to perform a pumping cycle comprising a pumping stroke and a filling stroke. The pump unit (1) also includes an inlet valve (7) having an inlet valve member (19) movable between an open position for permitting the supply of fuel to the pumping chamber (5) from the low pressure fuel supply line (11) and a closed position for inhibiting the supply of fuel from the pumping chamber (5) to the low pressure supply line (11). An outlet valve (9) is provided in the high pressure fuel outlet (13). The pump unit (1) also includes a means (39) for latching the inlet valve member (19) in its open position. The present application also relates to a method of operating a pump unit (1); and a valve (7) for a fuel injection system. The inlet valve member (7) comprises a bore (25) for selectively establishing fluid communication between the pumping chamber (5) and either the fuel supply line (11) or the outlet valve (9).

    Abstract translation: 本申请涉及一种用于燃料喷射系统的泵单元（1）。 泵单元（1）具有低压燃料供应管线（11）和高压燃料出口（13）。 具有柱塞（15）的泵送室（5）可操作以执行包括泵送冲程和填充冲程的泵送循环。 泵单元（1）还包括具有入口阀构件（19）的入口阀（7），入口阀构件（19）可在允许从低压燃料供应管线（11）向泵送室（5）供应燃料的打开位置之间移动， 以及用于禁止从泵送室（5）向低压供应管线（11）供应燃料的关闭位置。 出口阀（9）设置在高压燃料出口（13）中。 泵单元（1）还包括用于将入口阀构件（19）锁定在其打开位置的装置（39）。 本申请还涉及一种操作泵单元（1）的方法; 和用于燃料喷射系统的阀（7）。 入口阀构件（7）包括用于选择性地建立泵送室（5）和燃料供应管线（11）或出口阀（9）之间的流体连通的孔（25）。

    FUEL INJECTOR AND METHOD FOR CONTROLLING THE SAME
    2.
    发明申请
    FUEL INJECTOR AND METHOD FOR CONTROLLING THE SAME 审中-公开
    燃油喷射器及其控制方法

    公开(公告)号：WO2013178443A1

    公开(公告)日：2013-12-05

    申请号：PCT/EP2013/059511

    申请日：2013-05-07

    Applicant: DELPHI TECHNOLOGIES HOLDING S.À.R.L.

    Inventor： HARCOMBE, Anthony ,  MEEK, George

    IPC: F02M47/02

    CPC classification number: F02M61/042 ,  F02M47/027 ,  F02M47/06

    Abstract: The present invention relates to a fuel injector (1) for use in delivering fuel to an internal combustion engine. The fuel injector (1) includes a nozzle having at least one nozzle outlet. A valve needle is moveable with respect to a valve needle seating through a range of movement between a closed position and an open position to control fuel delivery through the at least one nozzle outlet. The movement of the nozzle needle is controlled by fuel pressure within a control chamber (18). The injector (1) has first and second nozzle control valves (8, 10) for controlling fuel flow into and out of the control chamber (18) to pressurise and depressurise the control chamber, respectively. The first nozzle control valve (10) can operate selectively to place the control chamber (18) in fluid communication with a fuel drain (28). The first nozzle control valve (8) can also operate selectively to place the control chamber (18) in fluid communication with a high pressure supply line (26). The second nozzle control valve (10) can operate selectively to place the control chamber (18) in fluid communication with a fuel drain (30). In an alternate arrangement, a filling valve (80) can be provided selectively to place a high pressure supply line (24) in fluid communication with the control chamber (18). The present invention also relates to a method of operating a fuel injector (1); and a fuel injector control system.

    Abstract translation: 本发明涉及一种用于向内燃机输送燃料的燃料喷射器（1）。 燃料喷射器（1）包括具有至少一个喷嘴出口的喷嘴。 阀针可相对于阀针运动，该阀针位于关闭位置和打开位置之间的运动范围内，以控制通过至少一个喷嘴出口的燃料输送。 喷嘴针的移动由控制室（18）内的燃料压力控制。 喷射器（1）具有第一和第二喷嘴控制阀（8,10），用于控制进入和离开控制室（18）的燃料流量，以分别对控制室进行加压和减压。 第一喷嘴控制阀（10）可以选择性地操作以将控制室（18）与燃料排放管（28）流体连通。 第一喷嘴控制阀（8）还可以选择性地操作以使控制室（18）与高压供应管线（26）流体连通。 第二喷嘴控制阀（10）可以选择性地操作，以将控制室（18）与燃料排出口（30）流体连通。 在替代布置中，可以选择性地设置填充阀（80）以将高压供应管线（24）与控制室（18）流体连通。 本发明还涉及一种操作燃料喷射器（1）的方法; 和燃料喷射器控制系统。

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