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    • 9. 发明授权
    • Fuel injector having a hydraulically actuated control valve and hydraulic system using same
    • 具有液压致动控制阀和使用其的液压系统的燃油喷射器
    • US06655602B2
    • 2003-12-02
    • US09961612
    • 2001-09-24
    • Scott F. ShaferYe Tian
    • Scott F. ShaferYe Tian
    • F02D106
    • F02M63/0029F02M47/043F02M47/06F02M57/025F02M59/105F02M59/42F02M59/46F02M59/466F02M59/468F02M2200/21F02M2200/60
    • In some hydraulically actuated fuel injectors, a pressure communication passage extends from a pilot valve to the underside of a spool valve to control movement of the same. For the spool valve to move, a substantial amount of fluid flow past the pilot valve is required due to the relatively large amount of fluid that must be displaced by movement of the spool valve member. However, during cold start, when the oil in the pressure communication passage is relatively viscous, it is difficult to move enough fluid past the relatively small flow area through the pilot valve to allow the spool valve to advance to its upper position. Therefore, the fuel injector of the present invention includes a pressure communication passage that is connected to the underside of the spool valve to be separated from the branch that passes through the pilot valve.
    • 在一些液压致动的燃料喷射器中,压力连通通道从先导阀延伸到滑阀的下侧以控制其移动。 为了使滑阀移动,需要大量的流体流过先导阀,这是由于相对大量的流体必须通过滑阀构件的移动来移动。 然而,在冷启动期间,当压力连通通道中的油相对粘稠时,难以将足够的流体通过先导阀移动通过比较小的流动区域,以允许滑阀前进到其上部位置。 因此,本发明的燃料喷射器包括压力连通通路,该压力连通通路连接到滑阀的下侧以与通过先导阀的分支分离。