3524B Engines for Off-Highway Trucks Caterpillar


E101 High Crankcase Pressure Warning

Usage:

3524B 1AW
产生此代码的情况:

发动机曲轴箱压力已经超过设置点,滞后时间已经到期。

系统响应:

将会记录该事件代码。

下列其中一个发动机部件可能有故障:

  • 曲轴箱呼吸器堵塞

  • 曲轴箱压力传感器

  • 发动机部件磨损

测试步骤 1. 检查曲轴箱呼吸器

  1. 检查曲轴箱呼吸器堵塞

    曲轴箱通气装置堵塞将引起曲轴箱压力过大。 曲轴密封泄漏可能发生。 活塞环的密封可能丢失。 曲轴箱窜气将会 增大曲轴箱压力。

结果:

  • 曲轴箱呼吸器堵塞。 -

    修复: 清洁曲轴箱呼吸器。

    停止

  • 曲轴箱呼吸器没有堵塞。 - 继续下一个测试步骤 2。

测试步骤 2. 检查曲轴箱压力传感器

  1. 检查曲轴箱压力传感器,以达到清洁干净的目的。 如果传感器不干净,清洁传感器。 如果状况正常,使发动机恢复运行。 如果状况不正常,继续执行下一步骤。

  1. 用一已知正常的传感器替换曲轴箱压力传感器。

结果:

  • 状况正常。 - 停止

  • 状况不正常。 - 继续下一个测试步骤 3。

测试步骤 3. 检查发动机部件是否磨损

  1. 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。 从曲轴箱通气装置冒出的烟雾(窜气)也会高于正常水平。 此通气装置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出现漏油。 曲轴箱窜气也可能因磨损的气门导管或损坏的涡轮增压器密封而导致的。

  1. 8T-270 0曲轴箱窜气量/空气流量指示仪 可检查窜气量。 有关检查曲轴箱窜气量的测试程序,请参阅专门说明书, SEHS8712, " 8T-2700 曲轴箱窜气量/空气流量指示仪 的使用"。

预期结果:

彻底检查后发现故障。

结果:

  • 正常 - 发动机部件存在故障。

    修复: 修理故障。 确保修理后故障被排除。

    停止

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