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    • 65. 发明专利
    • Fuel injection system
    • 燃油喷射系统
    • JP2008163758A
    • 2008-07-17
    • JP2006350799
    • 2006-12-27
    • Mikuni Corp株式会社ミクニ
    • ITABASHI YUSUKEMIZUI HIROSHITOKIYODA SUMIO
    • F02M57/02F02M51/00F02M61/06
    • F02M69/044F02M57/027F02M61/06F02M61/08F02M61/188
    • PROBLEM TO BE SOLVED: To surely discharge vapor and the like generated in a fuel injection system. SOLUTION: The fuel injection system comprises a cylindrical body 140 slidably receiving a plunger 110 and defining a pressure-feeding chamber C for fuel, a fuel supply passage 221a having a supply port 161a capable of communicating with the pressure-feeding chamber, a first vale element 160 allowing fuel in the supply passage to flow into the pressure-feeding chamber, a return passage 136 capable of returning a part of fuel in the pressure-feeding chamber to where the fuel was, a communication path 147 providing communication between the supply passage and the return passage, a discharge passage 146 having a discharge port 141 b for discharging fuel in the pressure-feeding chamber into the return passage, and an injection nozzle 300 for injecting pressurized fuel in the pressure-feeding chamber, wherein the discharge passage 146 is formed to be isolated from the communication path 147 by a partition wall 148 extending to a predetermined position above the supply port 161a and the discharge port 141b and to communicate with the return passage 136. With this, vapor mixed with fuel in the pressure-feeding chamber is efficiently discharged and fuel can be stably injected with high accuracy, in particular at high temperature. COPYRIGHT: (C)2008,JPO&INPIT
    • 要解决的问题:确保排出在燃料喷射系统中产生的蒸汽等。 解决方案:燃料喷射系统包括可滑动地接收柱塞110并限定用于燃料的加压室C的圆柱形主体140,具有能够与加压室连通的供给口161a的燃料供给通道221a, 允许供给通道中的燃料流入加压室的第一阀元件160,能够将压力供给室中的一部分燃料返回到燃料的位置的返回通道136,提供连通路径147, 供给通道和返回通道,具有用于将加压室中的燃料排放到返回通道中的排出口141b的排出通道146和用于在加压室中喷射加压燃料的喷射喷嘴300,其中, 排出通道146形成为通过延伸到供给口161a上方的预定位置的分隔壁148与连通路径147隔离,并且二 并且与返回通道136连通。由此,与供给室内的燃料混合的蒸气被有效地排出,能够高精度地,特别是在高温下稳定地喷射燃料。 版权所有(C)2008,JPO&INPIT
    • 67. 发明专利
    • Fuel injection nozzle
    • 燃油喷射喷嘴
    • JP2006307678A
    • 2006-11-09
    • JP2005128284
    • 2005-04-26
    • Denso Corp株式会社デンソー
    • SAKO KOJIADACHI HISAFUMIMASAGAKI YOSHIRO
    • F02M51/06F02M61/18
    • F02M61/06F02M61/18F02M2200/02
    • PROBLEM TO BE SOLVED: To increase a hydraulic force urging a needle 7 in a lift direction to suppress change in injection ratio by abrasion of a sheet part.
      SOLUTION: A seat line 28 seated on a seat face 24 in valve opening is disposed to a tip part of the needle 7, and a first conic surface 29 is disposed upstream of the seat line 28. A cutout 31 is formed in an area opposed to the seat face 24, in which an upstream end of the first conic surface 29 is a starting point A. In this constitution, since any restriction is not formed between the cutout 31 and the seat face 24, pressure distribution is not formed on an upper end face 31a of the cutout 31 so that high pressure (pressure of high-pressure fuel supplied to a nozzle) acts on a whole area. Therefore, since the hydraulic pressure acting on a lower face of the needle 7 is increased to suppress change in injection rate caused by abrasion of the seat line 28 or the seat face 24, compared with the needle without any cutout.
      COPYRIGHT: (C)2007,JPO&INPIT
    • 要解决的问题:提高沿提升方向推动针7的液压力,以通过片部件的磨损来抑制注射比的变化。 解决方案:安装在阀开口上的座面24上的座管线28设置在针7的尖端部分,并且第一锥面29设置在座线28的上游。切口31形成在 与座面24相反的区域,其中第一圆锥面29的上游端为起点A.在该构造中,由于在切口31和座面24之间没有形成限制,因此压力分布不是 形成在切口31的上端面31a上,使得高压(供给喷嘴的高压燃料的压力)作用在整个区域上。 因此,与没有切口的针相比,由于作用在针7的下表面上的液压增加,以抑制由座椅线28或座面24的磨损引起的喷射速度的变化。 版权所有(C)2007,JPO&INPIT
    • 69. 发明专利
    • Nozzle for fuel feeding system of vehicle, and fuel return valve using the nozzle
    • 汽油燃料送料系统喷嘴,燃油回流阀使用喷嘴
    • JP2005127313A
    • 2005-05-19
    • JP2004220841
    • 2004-07-28
    • Hyundai Motor Co Ltd現代自動車株式会社
    • JEONG JI HOON
    • F02M21/02F02M1/00F02M21/00F02M37/00F02M55/00F02M61/06F02M61/18F02M69/14
    • F02M61/06F02M61/1806F02M69/142
    • PROBLEM TO BE SOLVED: To provide a nozzle for a fuel feeding system of a vehicle capable of reducing noise generated by the fuel returning to a cylinder in return of the fuel in an LPI engine (Liquefied Petroleum Injection Engine), and to provide a fuel return valve using the nozzle. SOLUTION: The nozzle for the fuel feeding system of the vehicle employed for the fuel return valve comprises a nozzle body having a plurality of through holes having cross-sectional area of 40% or less of the flowing cross-sectional area of the returned fuel, and a guide part formed integrally with the nozzle body so as to vary the proceeding direction of fuel discharged from the through holes. Noise generated while the returning fuel falls and noise generated while air bubble containing in the returning fuel breaks are reduced. COPYRIGHT: (C)2005,JPO&NCIPI
    • 要解决的问题:提供一种用于车辆的燃料供给系统的喷嘴,其能够降低返回到气缸中的燃料产生的噪声,以换取LPI发动机(液化石油喷射发动机)中的燃料,并且 使用喷嘴提供燃油回流阀。 解决方案:用于燃料回流阀的车辆的燃料供给系统的喷嘴包括具有多个通孔的喷嘴体,该多个通孔的横截面积为截面面积的40%以下 返回的燃料和与喷嘴体一体形成的引导部,以改变从通孔排出的燃料的行进方向。 返回的燃料下降时产生的噪音和在返回的燃料中含有的气泡破裂时产生的噪声减少。 版权所有(C)2005,JPO&NCIPI