柴油机的燃油喷射系统是其供给系的重要组成部分,在工作中易出现故障,造成发动机功率不足,油耗增加,影响其起动性、经济性和动力性,因此,必须找出故障原因并予以排除,恢复发动机的正常工况。1.喷油泵故障原因及排除(1)柱塞副磨损柱塞的供油行程决定着喷油泵的供油量。柱塞因长时间往复移动或燃油中混有杂质,往往造成柱塞偶件的磨损,使供油时间滞后,供油 Diesel fuel injection system is an important part of its supply system, prone to failure in the work, resulting in insufficient engine power, fuel consumption increases, affecting its start-up, economy and power, therefore, we must identify the cause of the malfunction and be excluded , Restore the normal operating conditions of the engine. 1. Injection pump failure reasons and exclusion (1) plunger wear piston plunger fuel stroke determines the fuel supply. Plunger reciprocating for a long time or fuel mixed with impurities, often resulting in wear of the plunger coupling, so that the oil supply time lag, oil supply