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186F喷油泵的要求和结构特征
Time: 年月日
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186F
喷油泵是燃油体系的重要组成部分,它的作用是进步燃油压力,并依据柴油机的要求,在必定时刻内将必定量的燃油喷入燃烧室,所以要求柴油机油泵的供油量应满意柴油机在各种工况下的供油要求。
依据柴油机的要求,
186F
喷油泵要一起确保每一缸油,即各缸供油提早角共同,也应确保供油时刻相同,供油应敏捷,切速要快而灵敏,防止滴漏现象。依据燃烧室的方式和混合液的构成办法,
186F
喷油泵有必要为喷油器供给满足的燃油,以确保雾化质量杰出。
整个
186F
喷油泵首要零件有:凸轮轴、滚子、柱塞和柱塞套、柱塞绷簧、旋转套和齿轮环、出口阀和阀座和压力夹。柱塞套与活塞式柴油机喷油泵是首要的精细匹配零件之一,它们通过细心加工、相互研磨,其空隙直径仅为
0.001~0.003
毫米
,零件只能成对替换,开关不可能独自运用。
柱塞套内有两个孔,使柱塞套内腔与油路衔接。在右侧的油孔有一个纵向槽,刺进到螺杆中,使柱塞设备固定在泵内而不能滚动。柱塞的上部有一个与该柱的结尾相连通的环形槽。螺旋斜边从纵向槽调理石油供给。柱塞下部有两个凸起的肩部和凸缘。柱塞肩刺进套筒的开口处。旋转套可自在安装在柱塞套上。开齿环用螺钉固定在旋转套上,与齿啮合。
186F喷油泵的要求和结构特征
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