E015 High Engine Coolant Temperature Derate
产生此代码的情况:
发动机已经运转 3 分钟，冷却液温度已经超过冷却液温度保护的减额触发点。
系统响应:
电子控制模块（ECM）会记录该事件。
Caterpillar 电子技师（ET）在状态屏幕上显示"发动机减额"。
ECM 将使发动机功率减额 12.5%。 冷却液温度超过 109 °C (228 °F) 时，ECM 最高可使发动机功率减额 25%。 发动机功率将以每秒 1% 的速率减额。
测试步骤 1. 检查监控系统参数
"发动机冷却液温度偏高"参数可能未正确编程设定。 使用 Cat 电子技师查看"发动机冷却液温度偏高"参数设定。 确保该参数设定适合具体的发动机应用。
预期结果:
"发动机冷却液温度偏高"参数编程设定正确。
结果:
- 正常 - 发动机存在过热状况。
修复: 请参阅系统操作/测试和调整, "冷却系统 - 测试"。
停止
- 异常 - 参数未正确编程设定。
修复: 请参阅故障诊断与排除, "系统配置参数"，了解"发动机冷却液温度偏高"参数可用的温度范围。确认修理已排除故障。
停止
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