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1柴油雾化柱塞副、出油阀副及喷油器针阀副的状态不好,都可能造成喷油雾化不良,使柴油机启动困难、燃烧不完全、积炭增多,以致发动机功率下降、油耗增加,因此,对燃油系,特别是精密偶件要进行认真检查。2小孔与通孔(1)小孔。①油箱盖通气孔。该孔堵塞后,油箱不再与大气相通,油箱上部因油面下降会出现负压,造成供油中断;燃油受热后蒸发,使油箱内压力升高,引起油箱漏油。②曲轴箱换气孔。换气孔堵塞后,曲轴箱内废气越积越多,曲轴箱内气
1 diesel atomization of the plunger pair, the output of the valve and vice injector needle state is not good, may result in poor atomization spray, the diesel engine start difficult, incomplete combustion, carbon deposition increased, resulting in decreased engine power , Fuel consumption increases, therefore, the fuel system, especially precision parts to be carefully examined. 2 holes and holes (1) holes. ① fuel tank vent. The hole is blocked, the tank is no longer connected with the atmosphere, the upper part of the tank due to the oil surface will drop negative pressure, resulting in interruption of oil; fuel heated evaporation, so that the pressure tank, causing oil tank leakage. ② crankcase ventilation holes. After the ventilation hole is blocked, the crankcase gas accumulates more and more, and the crankcase gas inside