Intake Manifold Air Pressure Is Low
使用本步骤诊断和排除进气歧管空气压力低故障，或者在下列任一事件代码为现行状态时使用本步骤。 关于事件代码的信息，请参考故障诊断与排除, "事件代码"。 必须进入 Caterpillar 电子技师（ET）上的发动机监控系统才能查看这些代码的当前触发点。 有关发动机监控系统的信息，请参考故障诊断与排除, "发动机监控系统"。
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| 事件代码 | ||
|---|---|---|
| 代码和描述 | 产生此代码的状况 | 系统响应 |
| E1045(1) 进气歧管压力低 | 进气岐管空气压力降至触发点以下已达到编程的延迟时间。 | 系统将会记录该代码。 |
可能原因
- 进气阻塞
- 进气系统管路
- 发动机的燃油流量不正确
建议的措施
进气阻塞
检查进气系统中有无阻塞。 请参考系统操作/测试和调整手册以了解有关进气系统的信息。
进气系统管路
检查涡轮增压器压缩机与进气歧管之间的管路中有无以下故障：
- 管路损坏
- 卡箍松脱
- 接头裂纹
修理所有故障。 如有必要，更换零件。
燃油系统
发动机的燃油流量不正确可能会导致进气歧管空气压力低。 请参考故障诊断与排除, "燃油控制 - 测试"以便正确测试燃油系统。
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