柴油机机油压力低故障分析及改进

Fault analysis of low oil pressure in diesel engine and its improvement

分析导致柴油机机油压力低的原因,通过对摇臂系统的实际观测和建模研究摇臂油孔对机油压力的影响,并进行台架试验验证。结果表明:摇臂衬套安装角度偏小是导致机油压力降低的主要原因。改进压装机工装并设计摇臂衬套安装定位槽检查装置,实际应用表明,改进工装和使用定位槽检查装置可以有效保证衬套安装角度,解决机油压力低故障。

The causes of low oil pressure of diesel engine are analyzed,the effect of oil hole in rocker arm on oil pressure is analyzed through observation and modeling,which is further verified by bench test.The results show that the small mounting angle of rocker arm bushing is the main reason for oil pressure reduction.The design of rocker arm bushing installation is improved,and a positioning groove inspection device is applied.Practical application shows that the modified device can effectively ensure the bushing installation angle and solve the problem of low oil pressure.