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    • 5. 发明专利
    • Fuel injection valve
    • 燃油喷射阀
    • JP2011089489A
    • 2011-05-06
    • JP2009244498
    • 2009-10-23
    • Denso Corp株式会社デンソー
    • SUGAWARA SATOSHIKAMIYA TOMONORI
    • F02M51/00F02M47/00F02M47/02F02M61/20
    • F02M47/027F02M63/0017F02M63/0036F02M63/007
    • PROBLEM TO BE SOLVED: To make an injection amount controllable at a high degree of accuracy by suppressing the pressure pulsation of fuel exhausted from a control chamber in a fuel injection valve whose nozzle needle is driven by a change in control chamber pressure. SOLUTION: An extended hole 404 of a housing 40 is extended to a valve spring 37 side farther than an end face 405 of a housing shoulder. By shortening a length of a coupling hole 403 of the housing being the smallest diametrical portion inside the housing 40, an influence caused by narrowing the coupling hole 403 of the housing is reduced to decrease the pressure pulsation at the upstream side of the coupling hole 403 of the housing in an effluent pathway. As a result, the variation attributable to the influence of the pressure pulsation of a moving velocity in the direction of closing the valve of an armature 34 is curbed, thus making the injection amount controllable at a high degree of accuracy. COPYRIGHT: (C)2011,JPO&INPIT
    • 要解决的问题:通过抑制由喷射针由控制室压力的变化驱动的燃料喷射阀中的控制室排出的燃料的压力脉动,使得能够高精度地控制喷射量。 解决方案:壳体40的延伸孔404延伸到比弹性壳体肩部的端面405更远的阀弹簧37侧。 通过缩短壳体40内的最小直径部分的壳体的连接孔403的长度,减小了壳体的联接孔403变窄引起的影响,从而减小了联接孔403的上游侧的压力脉动 的住房在污水通道。 结果,可以抑制由于移动速度的压力脉动对关闭电枢34的阀的方向的影响而产生的变化,从而使喷射量可以高精度地控制。 版权所有(C)2011,JPO&INPIT
    • 10. 发明专利
    • High pressure fuel pump
    • 高压燃油泵
    • JP2006307829A
    • 2006-11-09
    • JP2005339003
    • 2005-11-24
    • Denso Corp株式会社デンソー
    • INAGUMA SADATSUGUINOUE HIROSHIOTA NOBUOODA KAORUOGURI TATSUMI
    • F02M59/44F02M59/46F04B53/16
    • F02M63/0036F02M59/102F02M59/447F02M59/462F02M63/005F02M63/0225F02M2200/28F02M2200/60
    • PROBLEM TO BE SOLVED: To reduce fuel pressure in a downstream side of a high pressure fuel pump during stop of a fuel injection valve while reducing quantity of fuel returning from a downstream side of a delivery valve to a low pressure side as much as possible. SOLUTION: A delivery valve 80 is connected to a discharge passage 230, through which fuel in a compression chamber 220 is discharged. The delivery valve 80 is screwed to a mount hole 22 formed in the cylinder 12. A communication passage 240 is formed in a body 82 to extend through the sidewall between a screwed part, in which the mount hole 22 and the body 82 are screwed to each other, and a gasket 88. A small clearance 242 is formed between an inner peripheral surface 23 of the mount hole 22 and an outer peripheral surface 83 of the body 82. The communication passage 240 provides communication between a fuel passage 232 downstream of a valve seat member 87 and the clearance 242. The clearance 242 communicates with the suction chamber 210 through a return passage 244 formed in the cylinder 12. COPYRIGHT: (C)2007,JPO&INPIT
    • 要解决的问题:为了减少在燃料喷射阀停止期间在高压燃料泵的下游侧的燃料压力,同时减少从排出阀的下游侧向低压侧返回的燃料量一样多 尽可能。 解决方案:输送阀80连接到排出通道230,通过该排出通道230排出压缩室220中的燃料。 输送阀80被拧到形成在气缸12中的安装孔22上。连通通道240形成在主体82中,以在安装孔22和主体82被螺纹连接的螺纹部分之间延伸穿过侧壁 彼此和垫圈88.在安装孔22的内周表面23和主体82的外周表面83之间形成有小的间隙242.连通通道240提供在安装孔22的下游的燃料通道232之间的连通 阀座构件87和间隙242.间隙242通过形成在气缸12中的返回通道244与吸入室210连通。(C)2007,JPO&INPIT