Engine Overspeeds
使用下述步骤对发动机过载进行故障诊断与排除。 此外，如果以下任一事件代码为激活状态，应使用本步骤。
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| 事件代码 | ||
|---|---|---|
| CDL 代码和描述 | 产生此代码的状况 | 系统响应 |
| E362(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。
超出发动机高怠速转速时，电子控制模块（ECM）将不会向喷油器供电。 |
| E362(3) 发动机超速 | 记录该代码。
发动机停机。 |
|
注: 如果发动机过载停机，在重新起动发动机前，必须循环通断 ECM 的供电。
- 涡轮增压器油封
- 进气可燃。
- 负载突然减少
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。
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| 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没有漏入进气口中。- 正常 转至测试步骤 2。 结果：涡轮增压器中的机油漏入进气口中。 - 不正常 修理：修理或更换涡轮增压器。 如果故障未得到排除，转至下一步骤。 |
2. 检查有无可燃进气 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。 |
进气 |
结果：周围大气中没有可燃气体。 - 正常 结果：周围大气中有可燃气体。 异常 修理：不要在有可燃气体的环境中运行发动机。 如果故障未得到排除，转至下一步骤。 |
3. 检查发动机负载有无突然降低 A. 与操作员讨论超速事件。 |
发动机负荷 |
结果：操作员确认超速是由发动机负载突然降低引起。 |
Caterpillar Information System:
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