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    • 9. 发明申请
    • High-Pressure Fuel Supply Pump and Discharge Valve Unit Used Therein
    • 其中使用的高压供油泵和排气阀组
    • US20110123376A1
    • 2011-05-26
    • US12674145
    • 2009-02-20
    • Shunsuke AritomiHideki MachimuraKiyotaka OguraMasami AbeKenichiro Tokuo
    • Shunsuke AritomiHideki MachimuraKiyotaka OguraMasami AbeKenichiro Tokuo
    • F04B11/00F04B53/10F16K1/32
    • F02M59/462F02M63/0054Y10T137/7738
    • A high-pressure fuel supply pump mounted with a discharge valve that can reduce an influence of noise caused by a valve body-circumferential flow and a discharge valve unit used therein. The high-pressure fuel supply pump includes a discharge valve (8) which is a non-return valve between a pressurizing chamber (11) and a discharge port (13). The discharge valve (8) includes a valve body housing (8d), a discharge valve spring (8c), a valve body (8b) and a seat member (8a). The discharge valve (8) is a flat valve. When the valve is opened, a flow of fuel moving from the pressurizing chamber and axially colliding with the valve body is radially distributed in the radial direction of the valve body to become a flow directly moving the discharge ports and a flow colliding with an inner wall of the valve body housing before moving toward the discharge ports and then in a circumferential direction of the valve body. The discharge valve (8) is provided with a liquid damper chamber defined between an outer circumference of the seat member (8a) and an outer circumference of the valve body (8d) and an inner circumference of the valve body housing (8d) to face the flow in the circumferential direction. The liquid damper chamber includes first, second and third tubular passages (503A, 503B, 503C).
    • 安装有排气阀的高压燃料供给泵,其可以减少由阀体周向流动引起的噪声的影响和其中使用的排出阀单元。 高压燃料供给泵包括排出阀(8),其是在加压室(11)和排出口(13)之间的止回阀。 排出阀(8)包括阀体壳体(8d),排出阀弹簧(8c),阀体(8b)和座椅构件(8a)。 排出阀(8)是平阀。 当阀打开时,从加压室移动并与阀体轴向碰撞的燃料流径向分布在阀体的径向方向上,成为直接移动排出口的流动和与内壁碰撞的流动 在朝向排出口移动之前,然后在阀体的圆周方向上移动。 排出阀(8)设置有液体阻尼室,其限定在座构件(8a)的外周与阀体(8d)的外周与阀体壳体(8d)的内周面之间 在圆周方向的流动。 液体阻尼室包括第一,第二和第三管状通道(503A,503B,503C)。
    • 10. 发明授权
    • High-pressure liquid supply pump
    • 高压液体供应泵
    • US08162623B2
    • 2012-04-24
    • US12261439
    • 2008-10-30
    • Shunsuke AritomiNoriyuki MaekawaHideki MachimuraMasashi Nemoto
    • Shunsuke AritomiNoriyuki MaekawaHideki MachimuraMasashi Nemoto
    • F04B49/00
    • F02M63/0265F02M37/0029F02M37/0052F02M59/366F02M63/0036F02M63/005F02M63/0054F04B49/035G05D7/0133
    • An object of the present invention is to reduce the pressure loss in a relief valve employed for a high-pressure liquid supply pump. Disclosed is a high-pressure liquid supply pump for pressurizing a liquid and supplying the pressurized liquid from a low-pressure side to a high-pressure side. The pump includes a relief path which releases the pressurized liquid from the high-pressure side to the low-pressure side, and a relief valve which is positioned in the relief path and equipped with an intermediate chamber, a valve seat positioned toward the high-pressure side of the intermediate chamber, a ball valve that is attachable to and detachable from the valve seat, and a ball valve retainer for pressing the ball valve against the valve seat. The relief path is configured so that an inflow path to the intermediate chamber and an outflow path from the intermediate chamber both produce a restriction effect. The ball valve retainer has a pressure reception surface for receiving the pressure from the intermediate chamber. A first pressure reception area, which detaches the ball valve from the valve seat upon receipt of liquid pressure of the pressurized liquid from a high-pressure section when the relief valve closes, is smaller than a second pressure reception area, which lifts the ball valve and the ball valve retainer upon receipt of liquid pressure from the intermediate chamber.
    • 本发明的目的是降低用于高压液体供给泵的安全阀中的压力损失。 公开了一种用于对液体加压并将加压液体从低压侧供给至高压侧的高压液体供给泵。 泵包括将加压液体从高压侧释放到低压侧的释放路径,以及安置阀,其位于释放路径中并配备有中间室,朝向高压侧定位的阀座, 中间室的压力侧,可附接到阀座和可从阀座拆卸的球阀,以及用于将球阀压靠在阀座上的球阀保持器。 排气路径构造成使得到中间室的流入路径和来自中间室的流出路径都产生限制效果。 球阀保持器具有用于接收来自中间室的压力的压力接收表面。 第一压力接收区域,当安全阀关闭时接收到来自高压部分的加压液体的液体压力时,将球阀从阀座分离,小于第二压力接收区域,该压力接收区域提升球阀 以及当从中间室接收液体压力时球阀保持器。