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    • 76. 发明授权
    • Fuel injector with piezoelectric actuator and method of use
    • 带压电执行器的燃油喷射器及其使用方法
    • US06928986B2
    • 2005-08-16
    • US10745997
    • 2003-12-29
    • Bernd NiethammerJohann WargaJason Lin
    • Bernd NiethammerJohann WargaJason Lin
    • B05B1/30F02M1/00F02M37/04F02M41/16F02M45/10F02M47/02F02M55/00F02M57/02F02M59/34F02M59/36F02M59/46F02M63/00
    • F02M57/026F02M57/025F02M59/34F02M59/366F02M59/462F02M63/0026F02M63/004F02M2200/703
    • A fuel injector having a piezoelectric actuator. A needle valve is mounted in the injector body and has an opening hydraulic surface substantially surrounded by a high-pressure fuel line in fluid communication with a high-pressure fuel chamber. A control piston partly defines a piston control chamber, which is in fluid communication with the opening hydraulic surface and the high-pressure fuel chamber. The piezoelectric actuator is activated between an off position and an on position for positioning a control valve into an open position or a closed position. A high-pressure fuel condition is maintained in the piston control chamber by fuel supplied from the high-pressure fuel chamber and independent of any actuation of the control valve. In a low pressure fuel condition, a force on the opening hydraulic surface of the needle valve member is greater than the downward force on the closing hydraulic surface thereby opening the needle valve member for producing an injection event.
    • 一种具有压电致动器的燃料喷射器。 针阀安装在喷射器主体中,并且具有基本上由与高压燃料室流体连通的高压燃料管线围绕的开口液压表面。 控制活塞部分地限定了与开启液压表面和高压燃料室流体连通的活塞控制室。 压电致动器在关闭位置和打开位置之间启动,用于将控制阀定位到打开位置或关闭位置。 通过从高压燃料室供应的燃料,并且独立于控制阀的任何致动,在活塞控制室中保持高压燃料状态。 在低压燃料条件下,针阀构件的打开液压表面上的力大于关闭液压表面上的向下的力,从而打开用于产生喷射事件的针阀构件。
    • 79. 发明申请
    • Fuel injecton apparatus
    • 燃油喷射装置
    • US20040237930A1
    • 2004-12-02
    • US10484104
    • 2004-03-10
    • Kiyomi KawamuraYoshihiro HottaYoshifumi WakisakaKiyomi Nakakita
    • F02B003/00
    • F02M59/466F02M39/005F02M45/04F02M45/12F02M47/027F02M57/025F02M59/105F02M59/34F02M59/366F02M63/0033F02M63/0078F02M63/0225F02M63/029F02M2200/04F02M2200/21
    • A fuel injection device is provided which can inject fuel by very high injection pressure and can realize favorable combustion and exhaust characteristics, and moreover, enables performance of fuel injection with arbitrary fuel injection patterns. In the fuel injection device 30, the protrusion 61 is provided at a distal end portion of the piston control valve 60 which is provided at the pressure intensifier 54, can change a practical opening area of the fuel flow path 57 to the cylinder 56 in accordance with movement of the piston control valve 60, and can control inflow amounts of liquid fuel that is flowed into the cylinder 56 by the piston control valve 60 (does orifice control). Thus, control of injection rates and injection pressures of fuel that is injected from the fuel injection nozzle 34 is enabled, and fuel injection patterns can be realized with an extremely high degree of freedom.
    • 提供一种能够以非常高的喷射压力喷射燃料并且可以实现良好的燃烧和排气特性的燃料喷射装置,此外,能够以任意的燃料喷射模式执行燃料喷射。 在燃料喷射装置30中,突起61设置在设置在增压器54处的活塞控制阀60的前端部,能够根据燃料流路57向气缸56改变实际的开口面积 通过活塞控制阀60的运动,并且可以通过活塞控制阀60来控制流入到气缸56中的液体燃料的流入量(进行孔口控制)。 因此,能够控制从燃料喷射喷嘴34喷射的燃料的喷射速度和喷射压力,并且能够以极高的自由度实现燃料喷射模式。
    • 80. 发明授权
    • Fuel injection system with improved regulation of pumping quantities
    • 燃油喷射系统改进了泵送量的调节
    • US06823845B2
    • 2004-11-30
    • US10279858
    • 2002-10-25
    • Peter Schueler
    • Peter Schueler
    • F02M3700
    • F02M63/0225F02M59/06F02M59/34F02M63/0001F04B1/0404F04B49/225
    • A fuel system is disclosed in which high-pressure fuel pump with a prefeed pump is proposed, in which the fuel quantity pumped by the prefeed pump is distributed for cooling and lubrication purposes, via a continuously adjustable multiposition valve, to the pump elements of the high-pressure fuel pump or to the low-pressure region of the high-pressure fuel pump. The multiposition valve is controlled by the control unit of the engine. An advantageous feature of the high-pressure fuel pump of the invention is that depending on the operating state of the engine and of the high-pressure fuel pump, an optimal distribution of the fuel quantity pumped by the prefeed pump can always be accomplished. Moreover, the energy demand by the prefeed pump is reduced and its service life is lengthened.
    • 公开了一种燃料系统,其中提出了具有预先泵的高压燃料泵,其中由预制泵泵送的燃料量经由连续可调节的多位置阀被分配用于冷却和润滑目的, 高压燃油泵或高压燃油泵的低压区域。 多功能阀由发动机的控制单元控制。 本发明的高压燃料泵的优点在于,根据发动机和高压燃料泵的运行状态,总是可以实现预制泵泵送的燃料量的最佳分配。 此外,预制泵的能量需求减少,使用寿命延长。