产品详情
柱塞泵工作原理，当传动轴1在电动机的带动下转动时，连杆2推动柱塞4在缸体3中作往复运动，同时连杆的侧面带动活塞连同缸体一同旋转。配油盘5是固定不动的。如果斜角度gamma;的大小和方向可以调节，就意味着可以改变泵的排量和吸、压油方向，此时的泵为双向变量轴向柱塞泵。
柱塞泵的优点
1. 参数高：额定压力高，转速高，泵的驱动功率大
2. 效率高，容积效率为95％左右，总效率为90％左右
3. 寿命长
4. 变量方便，形式多
5. 单位功率的重量轻
6. 柱塞泵主要零件均受压应力，材料强度性能可得以充分利用
进油过程：当凸轮的凸起部分转过去以后，在柱塞弹簧的作用力下，柱塞会向下运动，这时柱塞的上部空间产生真空度，当柱塞上端面把柱塞套上的进油孔打开以后，充满在柱塞泵上体油道内的液体经进油孔进入柱塞上部空间，（上部真空空间也叫泵油室），当柱塞运动到下卡点时，进油过程结束。
供油过程：当凸轮轴转到凸轮的凸起部分时，凸轮体被顶起，柱塞弹簧被压缩，柱塞受弹簧的反作用力后向上运动，燃油受压，这时会有一部分燃油经油孔流回喷油泵上体油腔。当柱塞顶面遮住套筒上的进油孔上缘时，由于柱塞和套筒之间的配合间隙很小很小，（在0.0015到0.0025mm之间）使柱塞顶部的柱塞泵油室成为一个密封的油腔，这时柱塞在弹簧的作用力下继续上升，柱塞泵油室内的油压迅速升高，当柱塞泵油压力大于出油阀弹簧力和高压油管剩余压力时，出油阀被推开，高压油经过出油阀进入高压油管，然后通过喷油器喷入燃烧室。供油过程结束。
回油过程：当柱塞向上供油上升到柱塞的斜槽与套筒上的回油孔相通时，柱塞泵油室低压油路便和柱塞头部的中孔和径向孔及斜槽沟通，油压突然下降，这时出油阀在弹簧力的作用下迅速关闭，回油过程结束。然后柱塞还要上行，当凸轮的凸起部分转过去以后，在柱塞弹簧的作用力下柱塞再次下行。这时又开始了下一个循环。
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