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    High pressure fuel pump
    2.
    发明公开
    High pressure fuel pump 审中-公开
    Kraftstoffhochdruckpumpe

    公开(公告)号：EP1063428A2

    公开(公告)日：2000-12-27

    申请号：EP00104550.9

    申请日：2000-03-13

    Applicant: Hitachi, Ltd.

    Inventor： Ono, Yoshinobu ,  Takahashi, Yukio ,  Machimura, Hideki ,  Hashida, Minoru ,  Kotaki, Masayoshi ,  Yamamura, Takefumi

    IPC: F04B1/20

    CPC classification number: F04B1/2021 ,  F04B1/122 ,  F04B1/14 ,  F04B53/164

    Abstract: The present invention provides an axial plunger pump which does not need bellows by restricting fuel to a cylinder bore (13) configuring a pump portion and by lubricating the other portion with oil. The high pressure fuel pump comprises a plunger (11) reciprocating according to a shaking movement of a swash plate (9), a cylinder block (12) forming a pump chamber (14) together with the plunger (11), and a sealing member provided between the plunger and a cylinder bore for sealing oil leaked from the pump chamber (14) to a chamber surrounding the pump chamber (14), wherein oil in the oil chamber is supplied from the outside of the high pressure fuel pump.

    Abstract translation: 本发明提供一种轴向柱塞泵，其不需要通过将燃料限制到构成泵部分的气缸孔（13）并且通过用油润滑另一部分而不需要波纹管。 高压燃料泵包括根据斜板（9）的振动运动往复运动的柱塞（11），与柱塞（11）一起形成泵室的气缸体（12）以及密封构件 设置在所述柱塞和用于将从所述泵室（14）泄漏的油密封到围绕所述泵室（14）的室的缸孔之间，其中所述油室中的油从所述高压燃料泵的外部供应。

    High-pressure liquid supply pump
    5.
    发明公开
    High-pressure liquid supply pump 有权
    Hochdruckflüssigkeitsförderpumpe

    公开(公告)号：EP2055929A2

    公开(公告)日：2009-05-06

    申请号：EP08018891.5

    申请日：2008-10-29

    Applicant: Hitachi Ltd.

    Inventor： Aritomi, Shunsuke ,  Maekawa, Noriyuki ,  Machimura, Hideki ,  Nemoto, Masashi

    IPC: F02M55/00 ,  F02M59/46 ,  F02M63/02

    CPC classification number: F02M63/0265 ,  F02M37/0029 ,  F02M37/0052 ,  F02M59/366 ,  F02M63/0036 ,  F02M63/005 ,  F02M63/0054 ,  F04B49/035 ,  G05D7/0133

    Abstract: 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 (210) which releases the pressurized liquid from the high-pressure side (12) to the low-pressure side (100), and a relief valve (200) which is positioned in the relief path (210) and equipped with an intermediate chamber (207), a valve seat (201) positioned toward the high-pressure side (12) of the intermediate chamber (207), a ball valve (202) that is attachable to and detachable from the valve seat (201), and a ball valve retainer (203) for pressing the ball valve (202) against the valve seat (201). The relief path (210) is configured so that an inflow path to the intermediate chamber (207) and an outflow path from the intermediate chamber (207) both produce a restriction effect. The ball valve retainer (203) has a pressure reception surface for receiving the pressure from the intermediate chamber (207). A first pressure reception area, which detaches the ball valve (202) from the valve seat (201) upon receipt of liquid pressure of the pressurized liquid from a high-pressure section when the relief valve (200) closes, is smaller than a second pressure reception area, which lifts the ball valve (202) and the ball valve retainer (203) upon receipt of liquid pressure from the intermediate chamber (207).

    Abstract translation: 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。 该泵包括将加压液体从高压侧（12）释放到低压侧（100）的释放路径（210），以及位于释放通路（210）中的安全阀（200） 并配备有中间室（207），朝向中间室（207）的高压侧（12）定位的阀座（201），球阀（202），其可附接到阀座 （201）和用于将球阀（202）压靠在阀座（201）上的球阀保持器（203）。 释放路径（210）构造成使得到中间室（207）的流入路径和来自中间室（207）的流出路径都产生限制效果。 球阀保持器（203）具有用于接收来自中间室（207）的压力的压力接收表面。 当安全阀（200）关闭时，从高压部分接收到加压液体的液体压力时，将球阀（202）从阀座（201）分离的第一压力接收区域小于第二压力接收区域 压力接收区域，其在从中间室（207）接收到液体压力时提升球阀（202）和球阀保持器（203）。

    High-pressure fuel supply pump and the manufacturing method
    6.
    发明公开
    High-pressure fuel supply pump and the manufacturing method 有权
    高压燃料供给泵及其制造方法

    公开(公告)号：EP2055934A3

    公开(公告)日：2011-01-05

    申请号：EP08019127.3

    申请日：2008-10-31

    Applicant: Hitachi Ltd.

    Inventor： Munakata, Akihiro ,  Machimura, Hideki ,  Hosokawa, Kazutaka

    IPC: F02M59/48 ,  F04B53/16 ,  B23K33/00 ,  F02M59/02

    CPC classification number: F02M59/02 ,  B23K11/16 ,  B23K11/26 ,  B23K20/023 ,  B23K33/006 ,  B23K33/008 ,  B23K2201/04 ,  B23K2203/02 ,  F02M59/48 ,  F02M59/485 ,  F02M2200/8084 ,  F04B1/0404 ,  F04B53/168

    Abstract: An object of this invention is to provide such a welded structure of and welding method for two metallic parts fitted together at a tubular section in a high-pressure fuel supply pump, that enables rapid joining of both metallic parts by staking (press-fitting included), screw fastening, and/or laser welding, offers high welding strength and sufficient fluid sealability, and keeps the metallic materials free from thermal changes in composition. Solution: While an electric current is supplied to any one of the welding connection surfaces formed between a pump housing 1 and cylinder 20 in a high-pressure fuel supply pump, between the pump housing 1 and an installation flange 8, between the pump housing 1 and an intake 10 or discharge joint 11, between the pump housing 1 and a pulsation-absorbing damper cover 40, between the pump housing 1 and a relief valve mechanism 15, and between the pump housing 1 and an electromagnetically driven intake valve mechanism 200, the particular two sections are pressed against each other to generate, along the connection surface, a plastic flow not causing melting or fusion due to heat, and form a diffusion-weld region at the connection surface by using the plastic flow and the application of the pressure.

    High-pressure fuel supply pump and the manufacturing method
    8.
    发明公开
    High-pressure fuel supply pump and the manufacturing method 有权
    Hochdruck-Brennstoffförderpumpe

    公开(公告)号：EP2055934A2

    公开(公告)日：2009-05-06

    申请号：EP08019127.3

    申请日：2008-10-31

    Applicant: Hitachi Ltd.

    Inventor： Munakata, Akihiro ,  Machimura, Hideki ,  Hosokawa, Kazutaka

    IPC: F02M59/48 ,  F04B53/16 ,  B23K33/00 ,  F02M59/02

    CPC classification number: F02M59/02 ,  B23K11/16 ,  B23K11/26 ,  B23K20/023 ,  B23K33/006 ,  B23K33/008 ,  B23K2201/04 ,  B23K2203/02 ,  F02M59/48 ,  F02M59/485 ,  F02M2200/8084 ,  F04B1/0404 ,  F04B53/168

    Abstract: An object of this invention is to provide such a welded structure of and welding method for two metallic parts fitted together at a tubular section in a high-pressure fuel supply pump, that enables rapid joining of both metallic parts by staking (press-fitting included), screw fastening, and/or laser welding, offers high welding strength and sufficient fluid sealability, and keeps the metallic materials free from thermal changes in composition. Solution: While an electric current is supplied to any one of the welding connection surfaces formed between a pump housing 1 and cylinder 20 in a high-pressure fuel supply pump, between the pump housing 1 and an installation flange 8, between the pump housing 1 and an intake 10 or discharge joint 11, between the pump housing 1 and a pulsation-absorbing damper cover 40, between the pump housing 1 and a relief valve mechanism 15, and between the pump housing 1 and an electromagnetically driven intake valve mechanism 200, the particular two sections are pressed against each other to generate, along the connection surface, a plastic flow not causing melting or fusion due to heat, and form a diffusion-weld region at the connection surface by using the plastic flow and the application of the pressure.

    Abstract translation: 本发明的目的是提供一种用于两个金属部件的焊接结构和焊接方法，所述两个金属部件在高压燃料供应泵的管状部分处装配在一起，能够通过铆接快速接合两个金属部件（包括压配件 ），螺钉紧固和/或激光焊接，提供高的焊接强度和足够的流体密封性，并且使金属材料不受组成的热变化的影响。 解决方案：在泵壳体1和安装凸缘8之间，在泵壳体1和泵壳体1之间向电动机壳体1和缸体20之间形成的焊接连接表面中的任一个提供电流， 以及位于泵壳体1和安全阀机构15之间以及泵壳体1和电磁进气阀机构200之间的泵壳体1和脉动吸收阻尼器盖40之间的进气口10或排出接头11， 特定的两个部分彼此挤压，以沿着连接表面产生不会由于热而引起熔化或熔化的塑性流动，并且通过使用塑性流动并在连接表面上形成扩散焊接区域 压力。

    Fluid pressure pulsation damper mechanism and high-pressure fuel pump equipped with fluid pressure pulsation damper mechanism
    9.
    发明公开
    Fluid pressure pulsation damper mechanism and high-pressure fuel pump equipped with fluid pressure pulsation damper mechanism 有权
    Druckpulsationsdämpferund Hochdruckkraftstoffpumpe mitDruckpulsationsdämpfer

    公开(公告)号：EP1995446A2

    公开(公告)日：2008-11-26

    申请号：EP08009388.3

    申请日：2008-05-21

    Applicant: Hitachi Ltd.

    Inventor： Munakata, Akihiro ,  Machimura, Hideki ,  Yamauchi, Hideaki ,  Kitajima, Daisuke ,  Nemoto, Masashi

    IPC: F02M55/04 ,  F02M59/48 ,  G05D16/06

    CPC classification number: F02M55/04 ,  F02M59/102 ,  F02M59/366 ,  F02M59/367 ,  F02M59/48 ,  F02M63/0225 ,  F02M2200/315 ,  F04B11/0016

    Abstract: A fluid pressure pulsation damper mechanism comprising: a metal damper (120) having two metal diaphragms joined together with a hermetic seal for forming a sealed spacing filled with a gas between the two metal diaphragms, an edge part at which are overlapped along outer peripheries thereof; a main body (126) having a damper housing in which the metal damper is accommodated; and a cover (128) attached to the main body (126) to cover the damper housing and isolate the damper housing from an outside air, the metal damper (120) being held between the cover and the main body; wherein the cover is further comprising: a metal plate for making the cover (128), a peripheral edge of the cover being joined to the main body (126) , a plurality of inner convex curved parts extending toward the main body (126).

    Abstract translation: 一种流体压力脉动阻尼器机构，包括：金属阻尼器（120），其具有两个金属隔膜，所述金属隔膜用气密密封件连接在一起，用于在所述两个金属隔膜之间形成填充有气体的密封间隔，沿其外周重叠的边缘部分 ; 主体（126），其具有容纳金属阻尼器的阻尼器壳体; 以及附接到所述主体（126）以覆盖所述阻尼器壳体并将所述阻尼器壳体与外部空气隔离的盖（128），所述金属阻尼器（120）保持在所述盖和所述主体之间; 其特征在于，所述盖还包括：用于制造所述盖（128）的金属板，所述盖的周缘连接到所述主体（126），多个向所述主体（126）延伸的内凸曲面部分。

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