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    • 11. 发明专利
    • Pressure boost device
    • 压力升压装置
    • JPS6193267A
    • 1986-05-12
    • JP21502284
    • 1984-10-13
    • Diesel Kiki Co Ltd
    • KOMADA HIDEO
    • F02M47/00F02M57/02F02M63/00
    • F02M57/026F02M57/025
    • PURPOSE: To lower the speed of pressurizing stroke of a large diameter piston in a pressure boost device in a fuel injection apparatus in order to enhance the durability of the device, by forming a return passage in the main body of the device, and by forming a cut-off port in a plunger.
      CONSTITUTION: A main body 1 is formed therein with a small diameter bore 2a and a large diameter body 2b which are communicated together. A small diameter plunger 6 is disposed in the small diameter bore 2a and a large diameter piston 14 is disposed in the large diameter bore 2b. Further, the main body is formed therein with a return passage 13 opened to the small diameter bore 2a. The plunger 6 is formed therein with a cut-of port 12 which is adapted to be communicated with a compression chamber 7 through the return passage 13 in the vicinity of the final position of pressurizing stroke of the plunger 6. With this arrangement, it is possible to enhance the cut-off of fuel injection from a fuel injection valve so that the sped of pressurizing stroke of the large diameter piston may be lowered, thereby it is possible to enhance the durability of the pressure boost device.
      COPYRIGHT: (C)1986,JPO&Japio
    • 目的:为了降低燃料喷射装置中的增压装置中的大直径活塞的加压行程的速度,通过在装置的主体中形成返回通路,并且通过形成 柱塞中的截止口。 构成:主体1形成有连通在一起的小直径孔2a和大直径体2b。 小径柱塞6设置在小直径孔2a中,大直径活塞14设置在大直径孔2b中。 此外,主体在其中形成有向小直径孔2a开口的返回通道13。 柱塞6形成有切口12,其适于在柱塞6的加压行程的最终位置附近通过返回通道13与压缩室7连通。通过这种布置,它是 可以提高从燃料喷射阀的燃料喷射的切断,使得大直径活塞的加压行程的加速可以降低,从而可以提高增压装置的耐久性。
    • 17. 发明专利
    • Fuel injection system
    • 空值
    • JP5591559B2
    • 2014-09-17
    • JP2010031583
    • 2010-02-16
    • ザマ・ジャパン株式会社
    • 匠 野中秀樹 渡辺
    • F02M37/20F02M37/00F02M37/12F02M37/16F02M59/44
    • F02M37/0052F02M37/0023F02M55/02F02M55/04F02M57/02F02M57/026F02M59/14
    • A fuel injection device for smooth discharge of a gas accumulated therein comprising a fuel pump, a solenoid valve for injecting pressurized fuel into the intake passage of an engine, a high-pressure fuel passage extending from the fuel pump to the solenoid valve and has a medially positioned constant-pressure chamber, and a fuel return passage (38) connected to a fuel return pipe, with the fuel return passage extending from the constant- pressure chamber and having a medially positioned priming pump. The constant-pressure chamber is configured with the top wall in the upper space thereof disposed above the opening of the high-pressure fuel passage opposite the solenoid valve, the fuel return passage opens into the upper space at a position above the opening of the high-pressure fuel passage, and the gas accumulating in the constant-pressure chamber is discharged from the upper space toward the fuel tank via the fuel return passage.
    • 一种燃料喷射装置,用于平稳地排放积聚在其中的气体,包括燃料泵,用于将加压燃料喷射到发动机的进气通道中的电磁阀,从燃料泵延伸到电磁阀的高压燃料通道, 中间定位的恒压室和连接到燃料返回管的燃料返回通道(38),燃料返回通道从恒压室延伸并具有中间定位的启动泵。 定压室的上部空间中的顶壁设置在与电磁阀相对的高压燃料通道的开口上方,燃料返回通道在高位开口上方的位置上方通向上部空间 压力燃料通道,并且积存在恒压室中的气体经由燃料返回通道从上部空间朝向燃料箱排出。