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    • 14. 发明授权
    • Fuel feeding apparatus for internal combustion engine and vehicle using
the fuel feeding apparatus
    • 使用燃料供给装置的内燃机和车辆的燃料供给装置
    • US5884597A
    • 1999-03-23
    • US879610
    • 1997-06-20
    • Kenji HirakuTadahiko NogamiKenji OkunaKiyoshi AmouAtsuji SaitoAtsuo Kishi
    • Kenji HirakuTadahiko NogamiKenji OkunaKiyoshi AmouAtsuji SaitoAtsuo Kishi
    • F02M37/00F02M37/06F02M37/18F02M55/02F02M59/04F02M59/10F02M59/42F02M63/02F04B49/02F04B49/08F02N17/00
    • F04B49/022F02M59/04F02M59/105F02M59/42F02M63/0225F04B49/08F04B2205/063F04B2205/18
    • A fuel feeding apparatus includes a pressure increasing piston system, in addition to a high pressure fuel pump, for further increasing the fuel pressure at the outlet of the high pressure fuel pump. For this purpose, a first piston provided in a first cylinder is moved in response to the pressure of fuel drawn up from a fuel tank and fed to the high pressure pump by a low pressure fuel feed pump, and a second piston provided in a second cylinder and having a diameter smaller than the diameter of the first piston is connected to the first piston and is moved together with the first piston for pressurizing fuel in the second cylinder communicating with the outlet of the high pressure fuel pump at the time of engine starting, and before the high pressure fuel pump is started. The first and second pistons then are automatically returned to their initial positions, respectively, after high pressure fuel pump is started, while the pressure of the highly pressurized fuel in the high pressure fuel pipe is maintained by a high pressure regulator, by designing the first and second cylinders, including the relative sizes of the respective pistons, so that a possible maximum pressure to which the fuel is increased by the piston system is set to a value lower than a preset high pressure value to be attained by the high pressure fuel pump.
    • 燃料供给装置包括除了高压燃料泵之外的增压活塞系统,用于进一步增加高压燃料泵出口处的燃料压力。 为此,设置在第一气缸中的第一活塞响应于从燃料箱引出的燃料的压力而被移动,并通过低压燃料供给泵供给到高压泵,并且第二活塞设置在第二气缸 气缸,其直径小于第一活塞的直径,连接到第一活塞,并与第一活塞一起移动,用于在发动机启动时在与高压燃料泵的出口连通的第二气缸中加压燃料 并且在高压燃料泵启动之前。 然后,在高压燃料泵启动之后,第一和第二活塞分别自动返回到其初始位置,而高压燃料管中的高压燃料的压力由高压调节器维持,通过设计第一 以及包括相应活塞的相对尺寸的第二气缸,使得由活塞系统将燃料增加的可能的最大压力设定为低于由高压燃料泵达到的预设高压值的值 。
    • 16. 发明申请
    • HIGH-PRESSURE FUEL SUPPLY PUMP
    • 高压燃油泵
    • US20140193280A1
    • 2014-07-10
    • US14238685
    • 2012-08-07
    • Atsuji Saito
    • Atsuji Saito
    • F04B11/00B23K26/20F02M21/02
    • F02M55/04B23K26/20F02M21/0245F02M59/44F02M59/48F02M2200/8084F04B11/00F04B11/0033Y02T10/32
    • The damper mechanism used for a high-pressure fuel supply pump system is configured so that an outer circumferential surface of a cover in regard to the thickness direction of the base material of the cover engages with the inner circumference of an open end part of a bottomed tubular concave part formed in a damper housing or in a pump housing of the high-pressure fuel supply pump. The total height of the damper as a low-pressure pulsation reducing mechanism can be reduced and the dimensions of the damper in the radial directions can also be reduced. In cases where the damper mechanism is formed integrally with the high-pressure fuel supply pump, the total height of the high-pressure fuel supply pump can be reduced and the dimensions of the damper part in the radial directions can also be reduced.
    • 用于高压燃料供给泵系统的阻尼器机构构造成使得盖的外周面相对于盖的基材的厚度方向的外周面与有底部的开口端部的内周接合 管状凹部形成在阻尼器壳体中或在高压燃料供应泵的泵壳体中。 可以减小作为低压脉动减小机构的阻尼器的总高度,并且也可以减小阻尼器在径向方向上的尺寸。 在阻尼机构与高压燃料供给泵一体形成的情况下,可以减小高压燃料供给泵的总高度,并且也可以减小阻尼器部件的径向尺寸。
    • 17. 发明申请
    • High-Pressure Fuel Supply Pump
    • 高压燃油泵
    • US20120227711A1
    • 2012-09-13
    • US13414334
    • 2012-03-07
    • Atsuji SAITO
    • Atsuji SAITO
    • F02M59/46
    • F02M59/462F02M55/04F02M63/005F02M2200/60
    • A valve seat member shared by an outlet valve and a pressure relief valve is provided between a pressurizing chamber and a high pressure path. A valve seat of the relief valve is provided on the side of the pressurizing chamber of the valve seat member. A valve seat of the outlet valve is provided in the valve seat member on the side of the high pressure path. One end of a relief path whose other end is open in the valve seat of the pressure relief valve is connected with the high pressure path, and one end of an outlet path whose other end is open in the valve seat of the outlet valve is connected with the pressurizing chamber.
    • 在加压室和高压路径之间设置由出口阀和减压阀共用的阀座构件。 安全阀的阀座设置在阀座构件的加压室侧。 出口阀的阀座设置在阀座构件的高压通路一侧。 另一端在压力释放阀的阀座开口的救生路径的一端与高压路连通,另一端在出口阀的阀座处开口的出口路径的一端连接 与加压室。