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2. 发明公开

KR1020010020735A 고압 연료펌프 失效
标题翻译：高压燃油泵
公开(公告)号：KR1020010020735A
公开(公告)日：2001-03-15
申请号：KR1020000019284
申请日：2000-04-12
申请人： 미쓰비시덴키 가부시키가이샤
发明人： 미야지와카기 , 오오니시요시히코 , 다나카가쓰노리 , 오지마고오이치
IPC分类号： F02M37/00
CPC分类号： F04B1/0465 , F02M59/462 , F02M59/464
摘要： PURPOSE: A high pressure fuel pump is provided to improve volume efficiency and prevent generation of fretting of a valve by forming first and second fuel suction ports and first and second fuel discharge ports provided on a valve performing opening and closing for a low pressure fuel suction passage and a high pressure fuel discharge passage on the outside in the radial direction of an opening part of a fuel pressurizing chamber. CONSTITUTION: In a high pressure fuel pump(60) supplying fuel within a fuel pressurizing chamber(32) sucked via a low pressure fuel passage(1) by reciprocating motion of a piston according to rotation of a camshaft of an engine to a fuel injection valve via a valve(61) and via a fuel discharge passage, the valve(61) is incorporated together with a housing(37) and a sleeve(72) into a recessed part(10b) of a casing(10). The valve(61) is formed by arranging first and second fuel suction ports(66,68) and first and second fuel discharge ports on the outside in the radial direction of an opening part(200) of the fuel pressurizing chamber(32) on the outer peripheral part. As a result, the vicinities of the fuel suction ports(66,68) and the fuel discharge ports are pinched by strong force between the casing(10) and the sleeve(72) and generation of a gap can be suppressed.
摘要翻译：目的：提供一种高压燃油泵，通过形成第一和第二燃料吸入口以及设置在执行打开和关闭的低压燃料吸入阀上的第一和第二燃料排放口来提高体积效率并防止产生微动作用在燃料加压室的开口部的径向外侧的外侧具有高压燃料排出通路。构成：在通过活塞根据发动机的凸轮轴的旋转与燃料喷射的往复运动的情况下，通过低压燃料通道（1）吸入的燃料加压室（32）内供给燃料的高压燃料泵（60）阀通过阀（61）并且经由燃料排出通道，阀（61）与壳体（37）和套筒（72）结合到壳体（10）的凹部（10b）中。阀61是通过在燃料加压室32的开口部200的径向上的外侧设置第一和第二燃料吸入口66,68和第二燃料排出口，外围部分。结果，燃料吸入口（66,68）和燃料排出口附近被壳体（10）和套筒（72）之间的强力夹住，并且能够抑制间隙的产生。

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