柱塞副的磨损很不均匀,主要集中在局部工作表面上。柱塞的头部和对着柱塞套回油孔的螺旋槽或斜槽上边缘磨损严重,柱塞套磨损较为严重的部位在进油孔和回油孔周围。柱塞副磨损后,会引起密封性能降低,供油时间滞后,停油时间提前,供油压力降低,供油量减少,各缸供油不均匀性增大等问题,致使发动机的动力性和经济性都下降。 Plunger wear is uneven, mainly concentrated in the local work surface. Plunger head and the plunger sleeve back to the oil hole spiral groove or chute upper edge of the serious wear and tear, more serious parts of the plunger sleeve wear parts around the inlet hole and back to the oil hole. Plunger pair wear, will lead to reduced sealing performance, fuel supply time lag, oil stop ahead of time, reducing the supply pressure, fuel supply decreased, the uneven supply of fuel increases the cylinder and other issues, resulting in engine power and Economic decline.