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柱塞副是燃油系统中的精密偶件,制造精度和表面光洁度要求极高。柱塞和柱塞套分别加工研磨后还要分级配副,相互研磨导向表面,成对作为最终成品,严禁随意拆散使用。其所以如此,是为了保证两方面的要求: 1.柱塞在柱塞套内要能自由地上下滑动和左右旋转,不得有任何阻滞。只有这样才能实现喷油泵正常的供油和油量调节。
The plunger pair is a precision coupling in a fuel system that requires extremely high manufacturing precision and surface finish. Plunger and plunger sleeve were processed after grinding but also graded deputy, mutual grinding guide surface, as a pair of the final product, is strictly prohibited to use. So it is, in order to ensure the two requirements: 1. Plunger in the plunger sleeve to be free to slide up and down and left and right rotation, without any block. Only in this way can the fuel pump normal fuel supply and fuel quantity adjustment.