东风_4型机车因机油压力低造成起动困难和回手柄停机故障的原因分析及改善措施

Reason analysis and improvement measures of difficult start and shutdown during returning handle of DF_4 locomotives due to lower lubricating oil pressure

原来担当京广干线货运牵引任务的东风4 型机车因京广电化开通而被调离干线改作它用 ,由此暴露出柴油机最低空载转速下机油压力低、起动困难和回手柄停机等问题 ,尤其在夏季问题更为严重。

The DF 4 locomotives previously hauling goods on Beijing Guangzhou main line were dispatched for other uses due to electrification of this line. Therefore, some problems exposed, i.e. lower lubricating oil pressure, difficult start and shutdown during returning handle at the minimal 0 load speed of diesel engines, especially in summer. The reasons were analyzed and some improvement measures were proposed.