2520V17A5-1CC22R 2520V17A5-1DD22R美国威格士VICKERS柱塞泵

当凸轮轴的突起一部分掉转去后，在弹黄力的作用下，柱塞往下健身运动，柱塞上端室内空间（称之为油阀室）造成真空值，当柱塞上内孔把柱塞套上的进进油口开启后，充斥着在汽油泵上体主油道内的柴油机经进油口进到油阀室，柱塞健身运动到下止点，进液完毕

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