3516C Generator Set Engines Caterpillar


Oil Filter Differential Pressure Problem

Usage:

3516C LY6
使用本步骤诊断和排除机油压差异常故障,或在以下事件代码为现行状态时使用本步骤。

表 1
事件代码    
J1939 代码和说明     产生代码的状况     系统响应    
99-15 发动机机油滤清器压差:高 - 最低严重程度 (1)     机油滤清器进口和出口的油压差超过编程设定的延迟时间的触发点。     记录该代码。
ECM 可能会使发动机减额或停机。    

可能原因

  • 机油滤清器堵塞或机油滤清器故障

  • 机油压力传感器和/或电路

  • 机油滤清器旁通阀故障

建议的措施

机油滤清器堵塞或机油滤清器故障

检查机油滤清器的压差。 如果机油滤清器压差太高,更换机油滤清器滤芯。

检查机油滤清器是否在良好的状况。 如果滤清器壳体存在明显的外部损坏,则机油滤清器可能有故障。 更换任何怀疑有故障的机油滤清器。

机油压力传感器和/或电路

当发动机熄火时,使用 Cat ET 将 "Engine Oil Pressure (发动机机油压力)"参数与 "Unfiltered Engine Oil Pressure (未经过滤的发动机机油的压力)"参数的状态进行比较。 确保传感器接线正确。

如果传感器之间的差异不近似等于零,故障诊断传感器电路。 参考故障排除, "传感器信号(模拟、有源)- 测试"。

机油滤清器旁通阀故障

如果机油滤清器旁通阀卡在关闭位置,则在机油温度低时能引起压差读数高。 如果机油滤清器旁通阀卡在打开位置,则在机油温度高时能引起压差读数低。 检查机油滤清器旁通阀的工作情况。

如果怀疑机油滤清器旁通阀操作不正常,修理阀,如可能。 必要时,更换阀。

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