Crankcase Pressure Is High
使用本步骤诊断和排除曲轴箱压力高故障，或者在以下事件代码为现行状态时使用本步骤。 关于事件代码的信息，请参考故障诊断与排除, "事件代码"。 必须进入 Caterpillar 电子技师（ET）上的发动机监控系统才能查看这些代码的当前触发点。 有关发动机监控系统的信息，请参考故障诊断与排除, "发动机监控系统"。
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| 事件代码 | ||
|---|---|---|
| 代码和描述 | 产生此代码的状况 | 系统响应 |
| E101(1) 曲轴箱压力高警告 | 发动机曲轴箱压力高于触发点压力已达到编程的延迟时间。 | 系统将会记录该代码。 |
可能原因
- 曲轴箱呼吸器堵塞
- 发动机部件磨损
建议的措施
曲轴箱呼吸器
曲轴箱呼吸器堵塞将引起曲轴箱压力过大。 这可能是曲轴油封泄漏的原因。 活塞环可能丧失密封性能。 这样将使曲轴箱窜气能进一步增大曲轴箱压力。
发动机部件
活塞或活塞环损坏可造成曲轴箱中压力过高。 这种状况会导致发动机运转不平稳。 发动机将会开始通过曲轴箱呼吸器排放过量的烟气（窜气）。 此呼吸器就可能会在很短的时间里阻塞，造成正常情况下不该漏油的密封垫和密封件出现漏油。 窜气也可能是因气门导管磨损或涡轮增压器密封件损坏而导致的。
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