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    • 5. 发明专利
    • Fuel injection device
    • 燃油喷射装置
    • JP2010001756A
    • 2010-01-07
    • JP2008159266
    • 2008-06-18
    • Honda Motor Co Ltd本田技研工業株式会社
    • ISHIMURA JUNICHIROHASHIMOTO TOMOYUKI
    • F02M61/16F02M61/10F02M61/20
    • F02M61/205F02M63/0007F02M63/0012F02M63/0026F02M63/0045F02M63/007
    • PROBLEM TO BE SOLVED: To provide a fuel injection device capable of reducing the outflow amount of fuel to the outside.
      SOLUTION: This fuel injection device 1 comprises a nozzle body 40, an injection control valve 20, and a closing assist piston 30. A first fuel storage chamber 41 and a needle valve closing chamber 43 are formed in the nozzle body 40. The fuel control valve 20 allows a first fuel passage 51 to communicate with the first fuel storage chamber 41 and cuts the first fuel storage chamber 41 off a third fuel passage 53 by moving forward to the first position, and cuts the first fuel passage 51 off the first fuel storage chamber 41 and allows the first fuel storage chamber 41 to communicate with the third fuel passage 53 by moving backward to the second position. The closing assist piston 30 suppresses the outflow of the fuel in the first fuel storage chamber 41 to the outside of the fuel injection device 1 through the third fuel passage 53, the needle valve closing chamber 43, and a fourth fuel passage 54 when the injection control valve 20 is moved from the first position to the second position.
      COPYRIGHT: (C)2010,JPO&INPIT
    • 要解决的问题:提供一种能够减少向外部的燃料流出量的燃料喷射装置。 解决方案:该燃料喷射装置1包括喷嘴体40,喷射控制阀20和关闭辅助活塞30.第一燃料储存室41和针阀闭合室43形成在喷嘴体40中。 燃料控制阀20允许第一燃料通道51与第一燃料储存室41连通,并且通过向前移动到第一位置而将第一燃料储存室41从第三燃料通道53切断,并且将第一燃料通道51切断 第一燃料储存室41,并且允许第一燃料储存室41通过向后移动到第二位置而与第三燃料通道53连通。 关闭辅助活塞30通过第三燃料通道53,针阀闭合室43和第四燃料通道54抑制第一燃料储存室41中的燃料向燃料喷射装置1的外部的流出 控制阀20从第一位置移动到第二位置。 版权所有(C)2010,JPO&INPIT
    • 10. 发明专利
    • Fuel injection valve
    • 燃油喷射阀
    • JP2008002306A
    • 2008-01-10
    • JP2006170955
    • 2006-06-21
    • Denso Corp株式会社デンソー
    • YOSHIMURA TETSUYASUZUKI KEISUKE
    • F02M47/00F02M47/02F02M51/00F02M51/06
    • F02M47/027F02M63/0026F02M63/0031F02M63/0045F02M2200/28F02M2200/703F02M2547/001
    • PROBLEM TO BE SOLVED: To reduce a change in an injection quantity by a change with the lapse of time of a valve element lift quantity, in a fuel injection valve for controlling opening-closing valve operation of a nozzle needle, by controlling pressure of a control chamber by a valve element of a control valve, by energizing the nozzle needle in the valve closing direction by fuel pressure of the control chamber. SOLUTION: A high pressure-part restrictor 50 is arranged in a high pressure fuel passage 13. Assuming the flow passage area of a high pressure sheet part 34 determined by the product of the peripheral length of the high pressure sheet part 34 and a lift quantity of the valve element 31 as S1, the flow passage area of the high pressure part orifice 50 as S2 and the flow passage area of the high pressure furl passage 13 as S3, S3 > S1 > S2 is achieved. Thus, a fuel inflow speed is mainly determined by the flow passage area S2 of the high pressure part orifice 50, and thus, a change in the injection quantity by a change with the lapse of time of the valve element lift quantity, can be reduced. COPYRIGHT: (C)2008,JPO&INPIT
    • 要解决的问题:为了通过随着阀芯升程量的经过而改变喷射量的变化,在用于控制喷嘴针的开闭阀操作的燃料喷射阀中,通过控制 通过控制阀的阀元件通过控制室的燃料压力使喷嘴针沿关闭方向通电来控制控制室的压力。 解决方案:高压部件限制器50布置在高压燃料通道13中。假定高压片部分34的流动通道面积由高压片部分34的周长和 阀S1的升程量为S1,高压部件孔50的流路面积为S2,高压通道13的流路面积为S3,S3> S1> S2。 因此,燃料流入速度主要由高压部件孔口50的流路面积S2决定,因此能够减少随着阀芯升程量的时间间隔的变化而引起的喷射量的变化 。 版权所有(C)2008,JPO&INPIT