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1. 发明专利

JP2006348956A FUEL PUMP 有权
公开(公告)号：JP2006348956A
公开(公告)日：2006-12-28
申请号：JP2006270258
申请日：2006-10-02
申请人： HITACHI LTD , HITACHI CAR ENG CO LTD
发明人： ABE MASAMI , YAMADA HIROYUKI , ONOSE TORU , SAITO JUNJI , USUI SATOSHI , KOTAKI MICHIYOSHI , ODAKURA HIROSHI
IPC分类号： F02M55/02 , F02M55/00
摘要： PROBLEM TO BE SOLVED: To provide a fuel pump of simple structure having a function for suppressing pulsation in a high-pressure fuel passage. SOLUTION: A fuel suction passage having a suction valve, a fuel discharge passage having a discharge valve, and a communication passage communicating these both passages with each other and in which a check valve is disposed are formed integrally with a pump body, and the fuel discharge passage is allowed to communicate with the check valve through an orifice to reduce pulsation in the high-pressure fuel passage by the simple structure. If a fuel chamber with a passage cross section larger than the passage cross section of the fuel discharge passage and the communication passage is formed between the orifice and the check valve, the pulsation in the high-pressure fuel passage can further be reduced. If a damper for pulsation absorption is installed in the fuel chamber, the pulsation in the high-pressure fuel passage can further be reduced. COPYRIGHT: (C)2007,JPO&INPIT

2. 发明专利

JP2003343395A Fuel pump 有权
标题翻译：燃油泵
公开(公告)号：JP2003343395A
公开(公告)日：2003-12-03
申请号：JP2002149949
申请日：2002-05-24
申请人： Hitachi Car Eng Co Ltd , Hitachi Ltd , 株式会社日立カーエンジニアリング , 株式会社日立製作所
发明人： ABE MASAMI , YAMADA HIROYUKI , ONOSE TORU , SAITO JUNJI , USUI SATOSHI , KOTAKI MICHIYOSHI , ODAKURA HIROSHI
IPC分类号： F02M55/00 , F02M55/02 , F02M55/04 , F02M59/10 , F02M59/34 , F02M59/36 , F02M59/44 , F02M59/46 , F02M63/00 , F02M63/02 , F04B49/035 , F04B49/24 , F04B53/16
CPC分类号： F04B53/16 , F02M55/04 , F02M59/34 , F02M59/366 , F02M59/442 , F02M59/46 , F02M63/0036 , F02M63/005 , F02M63/0054 , F02M63/0225 , F02M63/0245 , F02M63/028 , F02M2200/16 , F02M2200/304 , F02M2200/315 , F04B49/035 , F04B49/243
摘要： PROBLEM TO BE SOLVED: To provide a fuel pump having a more simple structure. SOLUTION: The fuel pump is provided with a cylinder reciprocatably retained; a pressurization chamber making a part of an outer surface of the cylinder to a part of a wall surface of which an internal volume is varied by a movement of the wall surface; a fuel inlet passage, i.e., a passage of the fuel led to the pressurization chamber; a fuel discharge passage, i.e., a passage after the fuel pressurized in the pressurization chamber is delivered to the outside of the pressurization chamber; a fuel inlet valve inserted to the fuel inlet passage; and a fuel discharge valve inserted to the fuel discharge passage. The fuel pump has a communication passage connecting an upstream side of the inlet valve of the inlet passage and a downstream side of the discharge valve of the discharge passage. A check valve for flowing the fuel from the fuel discharge passage to the fuel inlet passage is mounted into the communication passage. COPYRIGHT: (C)2004,JPO
摘要翻译：要解决的问题：提供具有更简单结构的燃料泵。解决方案：燃油泵设有可往复运动的气缸; 所述加压室将所述圆筒的外表面的一部分制成壁表面的一部分，其内部体积由于所述壁表面的移动而变化; 燃料入口通道，即通向加压室的燃料通道; 燃料排出通道，即在加压室中加压的燃料被输送到加压室外部的通道; 插入燃料入口通道的燃料入口阀; 以及插入燃料排出通道的燃料排出阀。燃料泵具有连接入口通道的入口阀的上游侧和排出通道的排出阀的下游侧的连通通道。用于将燃料从燃料排出通道流到燃料入口通道的止回阀安装在连通通道中。版权所有（C）2004，JPO

3. 发明专利

JP2008157252A Fuel pump 有权
标题翻译：燃油泵
公开(公告)号：JP2008157252A
公开(公告)日：2008-07-10
申请号：JP2008009970
申请日：2008-01-21
申请人： Hitachi Car Eng Co Ltd , Hitachi Ltd , 株式会社日立カーエンジニアリング , 株式会社日立製作所
发明人： ABE MASAMI , YAMADA HIROYUKI , ONOSE TORU , SAITO JUNJI , USUI SATOSHI , KOTAKI MICHIYOSHI , ODAKURA HIROSHI
IPC分类号： F02M55/00 , F02M55/02 , F02M59/46
摘要： PROBLEM TO BE SOLVED: To provide a fuel pump of a simple structure provided with a function inhibiting abnormal pressure rise in a high pressure fuel passage. SOLUTION: The fuel pump is composed by providing a relief passage returning fuel from a downstream side of a delivery valve to an upstream side of the delivery valve on a pump body, fitting a relief valve assembly in the relief passage, and sealing up and down flow in the relief passage by keeping metal contact between an outer circumference of the relief valve assembly and an inner wall surface of the relief passage. Consequently, a relief mechanism can be built on the pump body with a simple seal structure. COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：提供具有抑制高压燃料通道中的异常压力升高的功能的简单结构的燃料泵。解决方案：燃料泵是通过在泵体上设置从排出阀的下游侧向排出阀的上游侧返回燃料的卸压通路，将溢流阀组件安装在排气通路内，将密封通过在安全阀组件的外圆周和浮雕通道的内壁表面之间保持金属接触，在释放通道中上下流动。因此，可以以简单的密封结构在泵体上构建释放机构。版权所有（C）2008，JPO＆INPIT

4. 发明专利

JP2007146862A Fluid pump and high pressure fuel supply pump 有权
标题翻译：流体泵和高压燃油泵
公开(公告)号：JP2007146862A
公开(公告)日：2007-06-14
申请号：JP2007061190
申请日：2007-03-12
申请人： Hitachi Car Eng Co Ltd , Hitachi Ltd , 株式会社日立カーエンジニアリング , 株式会社日立製作所
发明人： YAMADA HIROYUKI , SAITO JUNJI , KOTAKI MICHIYOSHI , ODAKURA HIROSHI , ABE MASAMI
IPC分类号： F04B53/16 , F02M59/44
摘要： PROBLEM TO BE SOLVED: To provide a fluid pump capable of reducing the number of sealing sections and preventing reduction of reliability while reducing cost by reducing weight of a pump housing and improving machining property by using a soft material such as aluminum alloy in the pump housing. SOLUTION: This fluid pump is provided with a pressing mechanism for pressing a cylinder on which a plunger is slidably supported and the pump housing relatively so as to seal a pressurizing chamber by a face on which the pump housing and the cylinder are brought into pressure-contact mutually by forming the cylinder and the pump housing from different kinds of metal. COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：提供一种能够减少密封部分的数量并防止可靠性降低的流体泵，同时通过减少泵壳的重量并通过使用诸如铝合金的软材料来改善加工性能来降低成本泵壳。
解决方案：该流体泵设置有用于将柱塞可滑动地支撑在其上的缸体和泵壳体相对地按压的压力机构，以便通过泵壳体和气缸带来的面来密封加压室通过从不同种类的金属形成气缸和泵壳体来相互压力接触。版权所有（C）2007，JPO＆INPIT

5. 发明专利

JP2006161817A High pressure fuel supply pump 有权
标题翻译：高压燃油泵
公开(公告)号：JP2006161817A
公开(公告)日：2006-06-22
申请号：JP2006028735
申请日：2006-02-06
申请人： Hitachi Car Eng Co Ltd , Hitachi Ltd , 株式会社日立カーエンジニアリング , 株式会社日立製作所
发明人： USUI SATOSHI , YAMADA HIROYUKI , ONOSE TORU , SAITO JUNJI , ABE MASAMI , KOTAKI MICHIYOSHI , ODAKURA HIROSHI
IPC分类号： F02M59/44
摘要： PROBLEM TO BE SOLVED: To provide a high pressure fuel pump capable of returning fuel leaking from a pressurizing chamber into a fuel well into a suction port to reduce man-hour and cost. SOLUTION: In a structure for sealing an outer peripheral wall of a plunger, resin having excellent pressure tightness is used on a pressurizing chamber side, and a rubber-made sealing structure is used on the opposite side to the pressurizing chamber side. The fuel leaking into the fuel well formed on the pressurizing chamber side of the sealing structure through a clearance between a cylinder and the plunger from the pressurizing chamber is returned into the suction port through a lateral hole provided in the cylinder. COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：提供一种高压燃料泵，其能够将从加压室泄漏的燃料返回到燃料井中进入吸入口，以减少工时和成本。解决方案：在用于密封柱塞的外周壁的结构中，在加压室侧使用具有优异的压力密封性的树脂，并且在与加压室侧相反的一侧使用橡胶制的密封结构。在密封结构的加压室侧通过气缸和柱塞之间的间隙从加压室泄漏到燃料井中的燃料通过设置在气缸中的侧孔返回到吸入口。版权所有（C）2006，JPO＆NCIPI

6. 发明专利

JP2003035239A High pressure fuel supply pump 有权
标题翻译：高压燃油泵
公开(公告)号：JP2003035239A
公开(公告)日：2003-02-07
申请号：JP2001220405
申请日：2001-07-19
申请人： Hitachi Car Eng Co Ltd , Hitachi Ltd , 株式会社日立カーエンジニアリング , 株式会社日立製作所
发明人： USUI SATOSHI , YAMADA HIROYUKI , ONOSE TORU , SAITO JUNJI , ABE MASAMI , KOTAKI MICHIYOSHI , ODAKURA HIROSHI
IPC分类号： F02M59/02 , F02M59/44 , F16J15/16 , F16J15/18
CPC分类号： F02M59/102 , F02M59/442 , F02M2200/16 , F04B53/04
摘要： PROBLEM TO BE SOLVED: To provide a high pressure fuel pump for reducing manhours and a cost by returning fuel leaking to a fuel reservoir from a pressurizing chamber to a suction port.
SOLUTION: As a structure for sealing a plunger outer peripheral wall, resin superior in pressure-proof performance is used on the pressurizing chamber side, and a rubber seal structure is used on the opposite side of the pressurizing chamber.
COPYRIGHT: (C)2003,JPO
摘要翻译：要解决的问题：提供一种用于通过将燃料从加压室泄漏到吸入口的燃料泄漏而减少工时和降低成本的高压燃料泵。解决方案：作为密封柱塞外周壁的结构，在加压室侧使用耐压性优异的树脂，在加压室的相对侧使用橡胶密封结构。

7. 发明专利

JP2007010156A Seal mechanism and fuel pump comprising the same 审中-公开
标题翻译：密封机构和包含它的燃油泵
公开(公告)号：JP2007010156A
公开(公告)日：2007-01-18
申请号：JP2006216364
申请日：2006-08-09
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： HASHIDA MINORU , MACHIMURA HIDENORI , YAMAUCHI HIDEAKI , KOTAKI MICHIYOSHI , YAMAMURA TAKESHI
IPC分类号： F16J15/32 , F02M59/44 , F04B53/02
摘要： PROBLEM TO BE SOLVED: To improve pressure resistance of an oil seal to dispense with returning piping to a fuel tank for reducing pressure applied to the oil seal used in a high-pressure fuel pump. SOLUTION: This seal mechanism comprises a stress relieving mechanism for relieving stress generated on a joining portion of an oil seal holding member and a soft member. Concretely, a clearance (radial clearance) between an innermost diameter of a first holding member of a first oil seal 10 and an outer diameter of a plunger 70 is determined to be 0.9 mm or less. Thus when a pressure is added to the first oil seal 10 (first lip 13), the deformation of the first lip is prevented, and the stress of the soft member generated near a first holding member inner diameter angular portion 11a can be relieved. COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：为了提高油封的耐压性，省略了向燃料箱返回的管道，用于降低施加到高压燃料泵中使用的油封的压力。解决方案：该密封机构包括用于减轻在油封保持构件和软构件的接合部分上产生的应力的应力消除机构。具体地，确定第一油封10的第一保持部件的最内径与柱塞70的外径之间的间隙（径向游隙）为0.9mm以下。因此，当向第一油封10（第一唇缘13）添加压力时，防止了第一唇缘的变形，并且可以减轻在第一保持构件内径角部11a附近产生的软质构件的应力。版权所有（C）2007，JPO＆INPIT

8. 发明专利

JP2007032576A Fuel pump for cylinder direct fuel injection device 审中-公开
标题翻译：燃油泵直接燃油喷射装置
公开(公告)号：JP2007032576A
公开(公告)日：2007-02-08
申请号：JP2006287088
申请日：2006-10-23
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： YAMAGUCHI SHIZUKA , BABA NOBORU , TAKAHASHI MASAYA , TERAKADO KAZUYOSHI , KAGIYAMA ARATA , KOTAKI MICHIYOSHI , SAWADA SHOGO , KOJIMA KAZUO , YAMADA HIROYUKI , MACHIMURA HIDENORI , TAKAHASHI YUKIO
IPC分类号： F02M59/44 , C23C18/31 , C23C18/36
摘要： PROBLEM TO BE SOLVED: To provide a fuel pump for a cylinder direct fuel injection device capable of preventing occurrence of corrosion, cavitation, and wear due to erosion even at high temperatures reaching 100°C or more and even under high pressures reaching 7 to 12 MPa and improving resistance to the environment and having excellent service life when using an aluminum material.
SOLUTION: A Ni-P or Ni-P system plated film is formed by electroless plating in the fuel feed pump in the cylinder direct fuel injection device having aluminum or aluminum alloy.
COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：提供一种用于气缸直接燃料喷射装置的燃料泵，其能够防止即使在高达100℃或更高的高温甚至在高压下达到腐蚀，空化和磨损，甚至在高压下 7〜12MPa，提高耐环境性，使用铝材时的使用寿命优异。解决方案：通过在具有铝或铝合金的气缸直接燃料喷射装置中的燃料供给泵中通过无电镀形成Ni-P或Ni-P系统镀膜。版权所有（C）2007，JPO＆INPIT

9. 发明专利

JP2001003839A HIGH PRESSURE FUEL PUMP 失效
公开(公告)号：JP2001003839A
公开(公告)日：2001-01-09
申请号：JP17369599
申请日：1999-06-21
申请人： HITACHI LTD
发明人： ONO YOSHINOBU , TAKAHASHI YUKIO , MACHIMURA HIDENORI , HASHIDA MINORU , KOTAKI MICHIYOSHI , YAMAMURA TAKESHI
IPC分类号： F02M59/44 , F02M59/04 , F02M59/46 , F04B1/12 , F04B1/14 , F04B1/20 , F04B53/16
摘要： PROBLEM TO BE SOLVED: To eliminate a bellows for separating an oil circulating part and a fuel circulating part from each other, and form a device in a compact size by supplying oil in an oil chamber from an outside of a high pressure fuel pump, in a fuel pump provided with a plunger which is performed in reciprocating motion by sliding motion of a swash plate. SOLUTION: At a time point when pressure in a pump chamber 14 exceeds a regulated value and less in an intake stroke at the time of an operation of a fuel pump, an intake valve 24 disposed in a plunger 11 is opened, and fuel is sucked into the pump chamber 14. At a time point when pressure in the pump chamber 14 exceed the regulated value, a delivery valve 28 is opened, and fuel is supplied from the pump chamber 14 to a delivery chamber 29. In such constituted fuel pump, a shaft 1 penetrating a shaft seal 35 and a coupling 2 is fitted to a coupling fitting part 33 of an engine cum 6 wherein an oil passage 34 is disposed on a center of an axis, and oil is led from an engine side into a swash plate chamber 38 bypassing a communicating passage 4 of the swash plate chamber 38 disposed on a center of the shaft 1.

10. 发明专利

JP2004211574A Fuel pump 审中-公开
公开(公告)号：JP2004211574A
公开(公告)日：2004-07-29
申请号：JP2002380648
申请日：2002-12-27
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： KAGIYAMA ARATA , KAWANOBE HIROAKI , ISHII TAKASHI , TERAKADO KAZUYOSHI , KOTAKI MICHIYOSHI , MACHIMURA HIDENORI , HASHIDA MINORU , ONOSE TORU
IPC分类号： F02M59/44 , F02M59/02 , F02M59/04
摘要： PROBLEM TO BE SOLVED: To provide a fuel pump of which the service life is prolonged.
SOLUTION: The fuel pump 100 comprises a fuel passage 110, a pressure chamber 112, and a discharge passage 111. Of the members constituting the fuel pump, the body which contacts the fuel is made of an aluminum alloy material and provided with a plating layer to coat the body surface that contacts the fuel. An aluminum alloy containing 5-25 wt% Si and 0.5-5 wt% Cu is preferably used. The plating layer is formed by electroless plating.
COPYRIGHT: (C)2004,JPO&NCIPI

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