3516C Generator Set Engines Caterpillar


Crankcase Pressure Is High

Usage:

3516C LY6
按照此步骤对曲轴箱压力高进行故障诊断与排除。 在以下任一事件码为现行状态时使用本步骤。 有关事件代码和这些代码的默认触发点的信息,参考故障排除, "事件代码"。 必须进入 Caterpillar 电子技师(ET)上的监控系统才能查看这些代码的当前触发点。

表 1
事件代码    
J1939 代码和说明     激活代码的条件     系统响应    
101-15 发动机曲轴箱压力:高 - 最低严重程度 (1)     曲轴箱压力高于触发点,延迟时间已经终止。     记录该代码。
ECM 可能会使发动机减额或停机。    
101-16 发动机曲轴箱压力:高 - 中等严重程度(2)    
101-0 发动机曲轴箱压力:高 - 最高严重程度(3)    

可能原因

  • 发动机部件磨损

  • 闭式曲轴箱通风(CCV)滤清器堵塞

建议的措施

发动机部件

活塞或活塞环损坏可造成曲轴箱压力过高。 这种状况会导致发动机运转不平稳。 曲轴箱中将会比正常情况有更多的烟雾(窜气)。 压力升高可能会导致通常没有泄漏的密封垫和密封件出现机油泄漏。 窜气也可能因磨损的阀导管或损坏的涡轮增压器密封件而导致的。

CCV 滤清器堵塞

CCV 滤清器堵塞将导致曲轴箱压力过高。 如有配备,曲轴箱压力升高将导致滤清器维修指示灯出现。 曲轴密封泄漏可能发生。 活塞环的密封可能丢失。 曲轴箱窜气增加使曲轴箱压力进一步升高。

根据操作和保养手册, "发动机曲轴箱呼吸器 - 清理"清理曲轴箱呼吸器。 如有必要,更换滤清器,通过松开透明塑料盖上的螺钉并向下推指示灯按钮来复位指示灯。 重新安装盖。

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