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    • 6. 发明申请
    • Fuel Injector with Damper Volume and Method for Controlling Pressure Overshoot
    • 具有减震器体积的燃油喷射器和用于控制压力过冲的方法
    • US20120043393A1
    • 2012-02-23
    • US12857765
    • 2010-08-17
    • Zhenyu LiAlan Stockner
    • Zhenyu LiAlan Stockner
    • F02M63/00
    • F02M63/0275F02M55/025F02M61/10F02M61/20F02M2200/31F02M2200/40
    • A fuel injector configured to inject a predetermined volume of fuel, such as heavy fuel oil, is disclosed. The disclosed injector includes an injector body that defines a fuel inlet, a fuel passageway, and an orifice. The injector also includes a needle disclosed at least partially within the injector body. The needle is movable between a closed position where the needle blocks the orifice and an open position where the needle at least partially unblocks the orifice. At least the injector body and the needle define a nozzle chamber. The nozzle chamber is in communication with a high pressure fuel passageway and the orifice. The fuel passageway and nozzle chamber have a combined volume greater than the predetermined injection volume. The combined volume of the nozzle chamber and fuel passageway act as a damper to alleviate the effects of pressure overshoot, pressure oscillations and water hammer
    • 公开了一种配置成喷射预定体积的燃料(例如重质燃料油)的燃料喷射器。 所公开的喷射器包括限定燃料入口,燃料通道和孔口的喷射器主体。 喷射器还包括至少部分地在喷射器主体内公开的针。 针可以在针塞住孔口的关闭位置和针至少部分地解除孔口的打开位置之间移动。 至少喷射器主体和针限定喷嘴室。 喷嘴室与高压燃料通道和孔口连通。 燃料通道和喷嘴室具有大于预定喷射体积的组合体积。 喷嘴室和燃料通道的组合体积用作减震器,以减轻压力过冲,压力振荡和水锤的影响
    • 7. 发明申请
    • Low Leakage Cam Assisted Common Rail Fuel System, Fuel Injector, And Operating Method Therefor
    • 低泄漏凸轮辅助共轨燃油系统,燃油喷射器及其操作方法
    • US20110290211A1
    • 2011-12-01
    • US12791179
    • 2010-06-01
    • Dana ColdrenAlan Stockner
    • Dana ColdrenAlan Stockner
    • F02B3/00F02M51/00F02M69/46
    • F02M47/027F02M45/08F02M57/023F02M57/025F02M63/0033F02M63/0045F02M63/0064F02M63/0225
    • A fuel system includes a plurality of fuel injectors each defining a nozzle supply passage, a nozzle outlet and a low pressure space. The fuel system includes a plurality of mechanically actuated pressure intensifiers each including a tappet and being positioned partially within one of the fuel injectors, and a common rail fluidly connecting with each of the fuel injectors. Each of the fuel injectors further includes an injection pressure control mechanism having an injection pressure control valve. Each injection pressure control valve blocks the corresponding pressure intensifier from the common rail and fluidly connects the pressure intensifier with the low pressure space at a first position, and fluidly connects the pressure intensifier with the common rail and blocks the pressure intensifier from the low pressure space at a second position. Injecting fuel via operating the fuel system may include operating the fuel system in a low leakage mode where the pressure intensifier displaces fuel at a low pressure, between high pressure injections.
    • 燃料系统包括多个燃料喷射器,每个燃料喷射器限定喷嘴供应通道,喷嘴出口和低压空间。 燃料系统包括多个机械致动的压力增压器,每个压力增压器包括挺杆并且部分地位于一个燃料喷射器内,以及与每个燃料喷射器流体连接的共轨。 每个燃料喷射器还包括具有喷射压力控制阀的喷射压力控制机构。 每个喷射压力控制阀从共轨阻挡相应的增压器,并将压力增压器与第一位置处的低压空间流体连接,并且将压力增压器与公共导轨流体连接,并将压力增压器与低压空间 在第二个位置。 通过操作燃料系统注入燃料可以包括以低泄漏模式操作燃料系统,其中增压器在高压注射之间以低压将燃料置换。