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    • 99. 发明授权
    • Fuel injector assembly with pressure-equalized valve seat
    • 具有压力平衡阀座的燃油喷射器总成
    • US5494220A
    • 1996-02-27
    • US287097
    • 1994-08-08
    • Ronald D. ShinogleAvtar S. Sandhu
    • Ronald D. ShinogleAvtar S. Sandhu
    • F02M51/06F02M57/02F02M59/36F02M59/46F02M61/08F02M61/10F02M61/14F02M61/16F02M47/00
    • F02M57/02F02M59/366F02M59/466F02M61/14F02B2275/14Y02T10/123
    • A fuel injector assembly having a valve with a valve seat and at least one pressure-equalizing fuel cavity to reduce pressure variations at the valve seat when the valve is in a closed position. The fuel injector assembly has a fuel injector body and a fuel inlet formed in the fuel injector body. A nozzle with a nozzle fuel cavity is formed in the fuel injector body, and a nozzle check is disposed for reciprocating movement in the nozzle. A valve having a valve element and a valve seat is disposed in the fuel injector body. The valve element has a first position relative to the valve seat in which the fuel inlet is fluidly isolated from the nozzle fuel cavity and a second position relative to the valve seat in which the fuel inlet is fluidly coupled to the nozzle fuel cavity. A fuel supply bore supplies pressurized fuel to a valve fuel cavity formed in the valve, and an annular pressure-equalizing fuel cavity is disposed adjacent the valve fuel cavity and adjacent a periphery of the valve element to reduce fluid pressure variations in the valve fuel cavity so that the fluid seal at the valve seat is not weakened.
    • 一种燃料喷射器组件,其具有带阀座的阀和至少一个均压燃料腔,以当阀处于关闭位置时减小阀座处的压力变化。 燃料喷射器组件具有燃料喷射器主体和形成在燃料喷射器主体中的燃料入口。 在燃料喷射器主体中形成具有喷嘴燃料腔的喷嘴,并且设置有用于在喷嘴中往复运动的喷嘴支座。 具有阀元件和阀座的阀设置在燃料喷射器主体中。 阀元件具有相对于阀座的第一位置,其中燃料入口与喷嘴燃料腔流体隔离,并且相对于阀座的第二位置,其中燃料入口流体地联接到喷嘴燃料腔。 燃料供给孔将加压燃料供应到形成在阀中的阀燃料空腔,并且环形压力均衡燃料腔设置成邻近阀燃料腔并邻近阀元件的周边以减小阀燃料腔中的流体压力变化 使得阀座处的流体密封不被削弱。
    • 100. 发明授权
    • Electromagnetic valve for opening or closing fluid passage
    • 用于打开或关闭流体通道的电磁阀
    • US5476079A
    • 1995-12-19
    • US341224
    • 1994-12-02
    • Hiroyasu KanamoriTakio Tani
    • Hiroyasu KanamoriTakio Tani
    • F02M41/12F02M51/00F02M51/06F02M59/46F16K31/06F02M41/00
    • F02M51/005F02M59/466
    • An electromagnetic valve opens and closes a fuel return passage (23, 24) of a fuel injection pump, to control a time of fuel return when fuel compressed by a plunger (12) of the fuel injection pump is overflowed from a high-pressure fuel chamber (19) to a low-pressure fuel chamber (11). A valve needle (36) causes a reciprocative movement in an axial direction thereof to open or close the fuel return passage (23, 24). A terminal (46), supplying electric current to the electromagnetic valve, is disposed along the axial direction of the valve needle (36). A plate-like armature (43), connected to one end of the valve needle (36), has a through hole (43a) allowing the terminal (46) to enter therein and causing a reciprocative movement together with the valve needle (36). The outer periphery of the armature (43) extends radially further than the terminal (46). A coil (44), connected to the terminal (46), is disposed in confronting relation to a side surface of the armature (43) located adjacent to the valve needle (36).
    • 电磁阀打开和关闭燃料喷射泵的燃料返回通道(23,24),以控制燃料喷射泵的柱塞(12)压缩的燃料从高压燃料溢出时的燃料返回时间 室(19)到低压燃料室(11)。 阀针(36)沿其轴向方向往复运动以打开或关闭燃料返回通道(23,24)。 沿着阀针(36)的轴向配置向电磁阀供给电流的端子(46)。 连接到阀针(36)的一端的板状电枢(43)具有允许端子(46)进入其中并与阀针(36)一起往复运动的通孔(43a) 。 电枢(43)的外周边比端子(46)径向延伸。 连接到端子(46)的线圈(44)以与阀针(36)相邻的电枢(43)的侧表面相对地设置。