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1. 发明专利

JP2009114868A High pressure liquid supply pump 有权
标题翻译：高压液体泵
公开(公告)号：JP2009114868A
公开(公告)日：2009-05-28
申请号：JP2007285460
申请日：2007-11-01
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： ARITOMI TOSHIAKI , MAEKAWA NORIYUKI , MACHIMURA HIDENORI , NEMOTO MASAFUMI
IPC分类号： F02M59/34 , F02M55/02 , F02M59/46
CPC分类号： F02M63/0265 , F02M37/0029 , F02M37/0052 , F02M59/366 , F02M63/0036 , F02M63/005 , F02M63/0054 , F04B49/035 , G05D7/0133
摘要： PROBLEM TO BE SOLVED: To reduce pressure loss in a relief valve used for a high-pressure liquid supply pump.
SOLUTION: The high-pressure liquid supply pump for pressurizing a liquid and supplying the pressurized liquid from a low-pressure side to a high-pressure side 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 valve element that is attachable to and detachable from the valve seat, and a valve element retainer for pressing the valve element 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 valve element retainer has a pressure reception surface for receiving the pressure from the intermediate chamber. A first pressure reception area, which detaches the valve element 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 valve element and the valve element retainer upon receipt of liquid pressure from the intermediate chamber.
COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：减少用于高压液体供应泵的安全阀中的压力损失。解决方案：用于对液体加压并将加压液体从低压侧供给到高压侧的高压液体供给泵包括将加压液体从高压侧释放到低压侧和安置阀，其位于释放路径中并具有中间室，朝向中间室的高压侧定位的阀座，可附接到阀可拆卸的阀元件阀座和用于将阀元件压靠在阀座上的阀元件保持器。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。阀元件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，阀元件从阀座分离，小于第二压力接收区域，其将阀元件以及在从中间室接收液体压力时的阀元件保持器。版权所有（C）2009，JPO＆INPIT

2. 发明专利

JP2008286144A Liquid pressure pulsation damping mechanism and high-pressure fuel supply pump with the same 有权
标题翻译：液压式脉动阻尼机构及其高压燃油泵
公开(公告)号：JP2008286144A
公开(公告)日：2008-11-27
申请号：JP2007133612
申请日：2007-05-21
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： MUNAKATA AKIHIRO , MACHIMURA HIDENORI , YAMAUCHI HIDEAKI , KITAJIMA DAISUKE , NEMOTO MASAFUMI
IPC分类号： F02M59/44 , F02M55/02
CPC分类号： F02M55/04 , F02M59/102 , F02M59/366 , F02M59/367 , F02M59/48 , F02M63/0225 , F02M2200/315 , F04B11/0016
摘要： PROBLEM TO BE SOLVED: To provide a simple, compact damping mechanism having a stable pressure pulsation reducing effect for a liquid, and also to provide a high-pressure fuel supply pump for an internal combustion engine with the damping mechanism.
SOLUTION: A metal damper, which is made of two metal diaphragm joint in an airtight state, and is provided with an airtight space filled with a gas at the center section, and has an edge section where the two metal diaphragms overlap at its outer periphery, is fixed on a damper storage section while being sandwiched between a main body and a cover. The cover is made of a metal plate, the cover is alternately provided with a plurality of inner convex curved surface sections projecting on a main body side and a plurality of outer convex curved surface sections projecting in the direction going away from the main body, and the metal damper is fixed on the damper storage section by sandwiching the metal damper between the case and a metal damper retaining section where the end of the inner convex curved surface section is brought into contact with the surface at an one side of the edge section of the metal damper and is brought into contact with the surface on the other side of the edge section.
COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：提供一种对液体具有稳定的压力脉动降低效果的简单紧凑的阻尼机构，并且还提供具有阻尼机构的用于内燃机的高压燃料供给泵。解决方案：一种金属阻尼器，由气密密封的两个金属隔膜接头制成，并且在中心部分设置有充满气体的气密空间，并且具有两个金属隔膜重叠的边缘部分其外周边被夹在主体和盖之间而固定在减震器储存部上。盖由金属板制成，盖子交替地设置有在主体侧突出的多个内凸曲面部分和沿远离主体的方向突出的多个外凸曲面部分，以及金属阻尼器通过将金属阻尼器夹在壳体和金属阻尼器保持部分之间而固定在阻尼器存储部分上，金属阻尼器保持部分使内凸曲面部分的端部与边缘部分的一侧的表面接触金属阻尼器与边缘部分另一侧的表面接触。版权所有（C）2009，JPO＆INPIT

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