Engine Overspeeds
使用本步骤以诊断和排除发动机超速故障，或如果有以下任何事件代码为现行状态，则使用本步骤。
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| 事件代码 | ||
|---|---|---|
| J1939 代码和说明 | 产生此代码的状况 | 系统响应 |
| 190-15 发动机转速：高 - 最低严重程度 (1) | 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。 ECM 可能关闭发动机。 |
| 190-0 发动机转速：高 - 最高严重程度 (3) | ||
可能原因
- 继续沿陡坡下行（如果适用）
- 涡轮增压器的正常工作
- 进气
建议的措施
继续沿陡坡下行（如果适用）
在陡坡上可能需要接合发动机缓速器。
注: 在发动机缓速器的使用中，操作员必须了解机器的正确操作。
注: 并非所有应用场合都有发动机缓速器。
涡轮增压器的正常工作
检查涡轮增压器是否正常工作。 检查是否有机油漏入进气中。
进气
检查周围有无可燃气体。 不要在有可燃气体的环境中运转发动机。
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