3176C, 3406E and 3456 Industrial Engines Caterpillar


Fuel Pressure Problem

Usage:

3196 1DW
使用本程序以诊断和排除燃油压力低故障,或者在下列任一事件代码激活时使用本程序。 有关事件代码和这些代码的默认触发点的信息,请参阅故障诊断与排除, "事件代码"。 必须进入 Caterpillar 电子技师(ET)的监控系统才能查看这些代码的当前触发点。

表 1
诊断代码表    
说明     激活代码的条件     系统响应    
E053-1 燃油压力低警告     燃油供应压力过低。     记录该代码。    
94-1 燃油压力低警告     燃油供应压力过低。     记录该代码。
诊断灯将闪烁。
报警灯将发光。    

可能原因

  • 燃油油位低

  • 燃油供应阀(如果配备)部分打开

  • 燃油管

  • 燃油中有空气

  • 燃油箱堵塞

  • 燃油滤清器

修理建议

燃油供给

  1. 目视检查燃油油位。 不可全信燃油表。 如有需要,加注燃油。 如果发动机用尽燃油,则需要排出燃油系统中的空气。 请参考操作和保养手册。

  1. 确保燃油供应阀(如有配备)处在完全打开位置。

  1. 检查燃油管路有无以下故障:阻塞, 皱缩管路, 挤压管路 和 松动连接。 如果发现燃油管路有故障,则应修理和/或更换管路。

  1. 如果进行以下任何步骤,则应充注燃油系统:

    • 更换燃油滤清器

    • 维护燃油低压供油回路

    • 更换单体喷油器

    注: 燃油低压供油管路上安装的观察孔将会有助于诊断燃油中的空气。 请参考系统操作/测试和调整。

  1. 检查燃油油箱有无可能会堵塞供油的外物。

  1. 检查燃油滤清器。

  1. 检查柴油是否受污染。 请参考系统操作/测试和调整。

  1. 低温天气会对燃油特性带来不利影响。 请参考操作和保养手册,了解有关改善低温操作中燃油特性的信息。

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