LOW LEAKAGE CAM ASSISTED COMMON RAIL FUEL SYSTEM, FUEL INJECTOR AND OPERATING METHOD THEREFOR
    1.
    发明申请
    LOW LEAKAGE CAM ASSISTED COMMON RAIL FUEL SYSTEM, FUEL INJECTOR AND OPERATING METHOD THEREFOR 审中-公开
    低漏油辅助通用燃油系统,燃油喷射器及其运行方法

    公开(公告)号:WO2011153118A2

    公开(公告)日:2011-12-08

    申请号:PCT/US2011/038487

    申请日:2011-05-31

    Abstract: A fuel system (12) includes a plurality of fuel injectors (30) each defining a nozzle supply passage (48), a nozzle outlet (50) and a low pressure space (54). The fuel system (12) includes a plurality of mechanically actuated pressure intensifiers (70) each including a tappet (32) and being positioned partially within one of the fuel injectors (30), and a common rail (44) fluidly connecting with each of the fuel injectors (30). Each of the fuel injectors (30) further includes an injection pressure control mechanism (80) having an injection pressure control valve (82). Each injection pressure control valve (82) blocks the corresponding pressure intensifier (70) from the common rail (44) and fluidly connects the pressure intensifier (80) with the low pressure space (54) at a first position, and fluidly connects the pressure intensifier (80) with the common rail (44) and blocks the pressure intensifier (70) from the low pressure space (54) at a second position. Injecting fuel via operating the fuel system (12) may include operating the fuel system(12) in a low leakage mode where the pressure intensifier (70) displaces fuel at a low pressure, between high pressure injections.

    Abstract translation: 燃料系统(12)包括多个燃料喷射器(30),每个燃料喷射器限定喷嘴供应通道(48),喷嘴出口(50)和低压空间(54)。 燃料系统(12)包括多个机械致动的压力增压器(70),每个包括挺杆(32)并且部分位于燃料喷射器(30)之一内;以及共轨(44),其与每个 燃料喷射器(30)。 每个燃料喷射器(30)还包括具有喷射压力控制阀(82)的喷射压力控制机构(80)。 每个喷射压力控制阀(82)从共轨(44)阻挡相应的增压器(70)并在第一位置将压力增强器(80)与低压空间(54)流体连接,并将压力 增压器(80)和共轨(44),并且在第二位置处从低压空间(54)阻止增压器(70)。 通过操作燃料系统(12)来注入燃料可以包括以低泄漏模式操作燃料系统(12),其中增压器(70)在高压喷射之间以低压替代燃料。

    DUAL FUEL COMMON RAIL SYSTEM AND FUEL INJECTOR
    2.
    发明申请
    DUAL FUEL COMMON RAIL SYSTEM AND FUEL INJECTOR 审中-公开
    双燃料通用铁路系统和燃油喷射器

    公开(公告)号:WO2013070882A1

    公开(公告)日:2013-05-16

    申请号:PCT/US2012/064104

    申请日:2012-11-08

    Abstract: A dual fuel system (10) includes a plurality of fuel injectors (12) that each have a non-injection configuration, a liquid fuel injection configuration, a gaseous fuel injection configuration and a combined fuel injection configuration. Each of the fuel injectors (12) includes a liquid control valve member (140) with a guide segment (141) that defines a portion of a leak path (148) from a liquid fuel inlet (33) to a drain outlet (77), and a gas control valve member (160) with a guide segment (141) that defines a second leak path (168) from the liquid fuel inlet (33) to the drain outlet (77). Each injector body (70) includes a tip component (71) that defines both a liquid nozzle outlet set (90) and a gas nozzle outlet set (99). A dual solenoid actuator (100) has a first armature (107) coupled to the liquid control valve member (140, a second armature (1087) coupled to the gas control valve member (160), and a shared stator (103).

    Abstract translation: 双燃料系统(10)包括多个燃料喷射器(12),每个燃料喷射器具有非喷射配置,液体燃料喷射配置,气体燃料喷射配置和组合燃料喷射配置。 每个燃料喷射器(12)包括液体控制阀构件(140),其具有限定从液体燃料入口(33)到排出口(77)的泄漏路径(148)的一部分的引导段(141) ,以及具有限定从液体燃料入口(33)到排出口(77)的第二泄漏路径(168)的引导段(141)的气体控制阀构件(160)。 每个喷射器主体(70)包括限定液体喷嘴出口组(90)和气体喷嘴出口组(99)的尖端部件(71)。 双螺线管致动器(100)具有联接到液体控制阀构件(140,耦合到气体控制阀构件(160)的第二电枢(1087))和共享定子(103)的第一电枢(107)。

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