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    VALVE ARRANGEMENT
    1.
    发明公开
    VALVE ARRANGEMENT 审中-公开
    阀门布置

    公开(公告)号：EP2914840A1

    公开(公告)日：2015-09-09

    申请号：EP13742019.6

    申请日：2013-07-30

    申请人： Delphi International Operations Luxembourg S.à r.l.

    发明人： ROUILLON, Raphael ,  PEREIRA, Etienne ,  TRENADO, Guillaume ,  ROUET, Jean-Luc

    IPC分类号： F02M63/00 ,  F02M37/00 ,  F16K15/04

    CPC分类号： F02M63/025 ,  F02D41/3863 ,  F02M37/0029 ,  F02M63/005 ,  F02M63/0056 ,  F16K15/044 ,  F16K17/0406 ,  F16K17/048 ,  F16K27/0245 ,  Y10T137/7848

    摘要： A valve arrangement (28) for use in limiting the pressure of fuel within an accumulator volume of an accumulator fuel system to a predetermined threshold level, the valve arrangement (28) comprising: a valve outlet (64, 66) for communication with a low pressure drain;a valve housing (30) provided with a valve housing bore for receiving fuel from the accumulator volume; and a valve member (50) having a closed position in which it is engaged with a valve seating (56) defined by the valve housing bore (48) to prevent fuel flow from the accumulator volume to the valve outlet (64, 66). The valve arrangement further comprises biasing means (70) for urging the valve member (50) towards the valve seating (56); a first restricted flow means (80) for restricting the flow of fuel between the accumulator volume and the valve outlet (64, 66) during a first stage of valve opening movement as soon as the valve member (50) is lifted from the valve seating (56); a second restricted flow means (82) effective during a second stage of valve opening movement which follows the first stage to provide a greater restriction than during the first stage; and a third restricted flow means (84) effective during a third stage of valve opening movement which follows the second stage to provide a variable restriction to fuel flow dependent on the extent of opening movement of the valve member (50). of the first, second and third restricted flow means (80, 82, 84) is defined between the valve member (50) and the valve housing bore (48).

    摘要翻译： 1。一种用于将蓄压器燃料系统的蓄压器容积内的燃料压力限制到预定阈值水平的阀装置（28），所述阀装置（28）包括：阀出口（64,66），用于与低压 高压排放口;阀壳体（30），设有用于接收来自所述蓄积器容积的燃料的阀壳体孔; 和具有关闭位置的阀构件（50），在所述关闭位置，所述阀构件与由所述阀壳体孔（48）限定的阀座（56）接合，以防止燃料从所述蓄压器体积流动到所述阀出口（64,66）。 阀装置还包括偏压装置（70），用于将阀构件（50）推向阀座（56）; 第一限制流动装置（80），用于一旦所述阀构件（50）从所述阀座（50）提升时在所述阀打开移动的第一阶段期间限制所述蓄积器容积和所述阀出口（64,66） （56）; 第二限制流动装置（82），在第一阶段之后的阀门打开运动的第二阶段期间有效，以提供比第一阶段期间更大的限制; 和第三受限流动装置（84），其在第二阶段之后的第三阶段阀门开启运动期间有效，以取决于阀门构件（50）的开启运动的程度对燃料流动提供可变的限制。 所述第一，第二和第三限流装置（80,82,84）的所述第二端限定在所述阀构件（50）和所述阀壳体孔（48）之间。