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    • 98. 发明专利
    • Unit injector to be employed for diesel engine
    • 用于柴油发动机的单元喷射器
    • JPS5979069A
    • 1984-05-08
    • JP18943082
    • 1982-10-28
    • Hino Motors Ltd
    • ENDOU MAKOTO
    • F02M57/02F02M59/36
    • F02M59/365
    • PURPOSE:To prevent generation of bubbles in a pump chamber by a method wherein fuel is prevented from being choked extremely in a communication between a feed hole and a reed in case the amount of the fuel in the unit injector is regulated. CONSTITUTION:A control slider 38 is provided with the feed hole 39, communicating a fuel chamber 40 therefor to the reed 35 of a plunger 33 when the plunger 33 is located at a predetermined position during sliding reciprocally, further, with a spill hole 43, communicating the reed 35 to the fuel chamber 40 at the opposite side of the feed hole 39. When pressure oil from a control oil pump is sent into a hydraulic pressure chamber 41, the pressure of the hydraulic pressure chamber 41 slides the control slider 38 downwardly under rotating it, a relative position between the feed hole 39 and the reed 35 is changed and the amount of fuel in the pump chamber 33 may be regulated.
    • 目的:为了防止在泵室中产生气泡,其方法是防止在单元喷射器中的燃料量被调节的情况下在供给孔和筘之间的连通中阻止燃料被阻塞。 构成:控制滑块38设置有进给孔39,当柱塞33位于滑动件往复运动的预定位置时,与溢出孔43进一步连通,将燃料室40与柱塞33的舌簧35连通, 在供给孔39的相对侧将筘35连通到燃料室40.当来自控制油泵的压力油被送入液压室41时,液压室41的压力向下滑动控制滑块38 在旋转它的同时,供给孔39和钢筘35之间的相对位置被改变,并且可以调节泵室33中的燃料量。
    • 99. 发明公开
    • FUEL SUPPLY DEVICE
    • 燃料供应装置
    • EP1712775A1
    • 2006-10-18
    • EP05710035.6
    • 2005-02-03
    • Bosch Corporation
    • KUBOTA, Kazuya, Bosch Automotive Systems Corporat.AOKI, Nobuo, Bosch Automotive Systems Corporation
    • F02M59/44F02M37/00F02M69/00
    • F02M37/0029F02M37/0052F02M59/34F02M59/365F02M59/366
    • In a fuel supply system (1), a fuel pressure regulating valve (11) disposed at a fuel outlet side of a low-pressure pump (3) in order to regulate the pressure of supply fuel from the low-pressure pump (3) to a predetermined pressure is housed inside a cylinder (31) such that a piston (32) is elastically urged by an elastic urging mechanism (33) toward a pressure receiving port (11A), the piston (32) is configured such that the pressure of the fuel at the fuel outlet side is regulated as a result of the piston opening/closing an overflow port (11B) disposed in a side wall portion of the cylinder (31) in response to the fuel pressure applied to the pressure receiving port (11A), a lubrication fuel outlet port (11C) for taking out fuel for lubrication is disposed in the side wall portion of the cylinder (31) at a position nearer to the pressure receiving port (11A) than the overflow port (11B), and lubricating-use fuel is taken out prior to the start of the pressure regulating operation.
    • 在燃料供应系统(1)中,为了调节来自低压泵(3)的供应燃料的压力,设置在低压泵(3)的燃料出口侧的燃料压力调节阀(11) (31)内容纳有规定压力的活塞(32),通过弹性施力机构(33)向受压口(11A)弹性地施力,活塞(32) 根据施加到压力接收口的燃料压力,活塞打开/关闭设置在气缸(31)的侧壁部分中的溢流口(11B),从而限制燃料出口侧的燃料的流量 如图11A)所示,在比溢流口(11B)更靠近压力接收口(11A)的位置,在汽缸(31)的侧壁部设置有用于取出润滑用的燃料的润滑燃料出口(11C) 并且在压力调节操作开始之前取出润滑用燃料。