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发电机运行的五大误区

by 陈正良 16 Mar 2022

1、带负荷紧急停机或突然卸载负荷后立即停机。柴油发电机组停机后,冷却水停止循环,散热能力急剧下降,发热部件失去冷却,易造成气缸盖、气缸套、气缸体等机件过热、开裂,或活塞过度膨胀卡在气缸套内。

2、柴油发电机在油量不足的情况下运转,供油量不足,造成各摩擦副表面供油量不足,产生异常磨损或烧伤,若造成零件损坏,则需要重新安装。

3、冷启动后,发动机不经暖机就带负荷运转。柴油发电机冷启动时,由于油的粘度大,流动性差,造成油泵供油不足,机械摩擦面因缺油而润滑不良,导致磨损加快,甚至出现拉缸、烧瓦等故障。

4、柴油机冷启动后猛踩油门,如果猛踩油门,柴油发电机的转速会急剧上升,使发动机上的一些摩擦面因干摩擦而严重磨损。再加上猛踩油门时活塞、连杆、曲轴的接受力变化很大,造成剧烈的冲击,易损坏机件。

5、当冷却水量不足或冷却水、油温过高时,会因冷却水量不足而使柴油发电机的冷却效果降低,柴油机因得不到有效的冷却而导致过热。柴油发电机过热还会使柴油机的燃烧过程恶化,造成喷油器故障、雾化不良、积碳增加等。

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