C32 Marine Engine Caterpillar


Engine Overspeeds

Usage:

C32 AX2
使用本步骤排除发动机超速故障,或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,请参阅故障诊断与排除, "事件代码"。 关于发动机监控系统的信息,请参阅故障诊断与排除, "发动机监控系统"。

注: 以下某些代码可能不适用于特定的应用。

表 1
事件代码 
代码和描述  产生此代码的状况  系统响应 
E190(1)发动机超速  在延迟时间内发动机转速持续超过发动机超速触发点。  记录该代码。
发动机转速高于触发点时,电子控制模块 (ECM) 将禁用喷油。 

可能原因

  • 涡轮增压器的正常工作

  • 进气

  • 起动辅助装置工作异常

建议的措施

注: 下面以概率的先后顺序列出了这些步骤。 依次完成这些步骤。

表 2
故障诊断与排除测试步骤  数值  结果 

1. 涡轮增压器的正常工作

A. 检查涡轮增压器是否正常工作。

B. 检查是否有任何机油漏入进气口中。
 

涡轮增压器
 

结果:涡轮增压器中的机油漏入进气口中。

修理或更换涡轮增压器。

结果:涡轮增压器中的机油没有漏入进气口中。

转至测试步骤 2。
 

3. 进气

A. 检查周围有无可燃气体。

B. 检查起动辅助装置(如果配备)是否正常工作。
 

空气质量
 

结果:大气中含有可燃气体。

不要在有可燃气体的环境中运转发动机。
 

按所列步骤顺序完成以上步骤。

以上步骤解决了此问题。 将发动机重新投入使用。

以上步骤没有解决问题。

联系当地 Cat 代理商的技术通信员(TC)。 如需进一步的帮助,您的 TC 可以通过代理商解决方案网络(DSN)与您交谈。

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