C6.6 Engines For Caterpillar Built Machines Caterpillar


Intermittent Engine Shutdown

Usage:

928HZ BYD
注: 如果发动机完全停机且必须重新起动发动机,则只能使用本步骤。

可能原因

  • 诊断代码

  • 进气

  • 电气接头

  • 燃油供给

建议的措施

诊断代码

检查电子维修工具上是否出现激活的代码。 在继续该程序之前,排除所有激活或最近记录的诊断代码。

进气

  1. 检查空气滤清器是否卡住或堵塞。

  1. 检查进气管是否堵塞。

电气接头

  1. 检查以下位置的 ECM 接头是否安装正确:

    • P1 ECM 接头

    • P2 ECM 接头

    • P532 燃油导轨泵电磁阀接头

  1. 请参考故障诊断与排除, "电气接头 - 检查"。

  1. 对从 ECM 到蓄电池室的蓄电池导线进行检查。 请参阅示意图。 检查导线和供电继电器。 检查ECM的电源和接地线路的连接情况。 有关更多信息,请参阅示意图。

  1. 检查发动机停机控制装置的导线和开关。 请参阅该机型的故障排除指南。

  1. 从电子维修工具的诊断测试中选择"摇摆测试"。

  1. 选择要监控的正确参数组。

  1. 按下"START(起动)"按钮。 晃动配线线束以再造间歇性故障。

    注: 如果存在间歇性故障,状态会得到突出显示,并且会听到嘟嘟声。

  1. 修复所有故障,并确保排除了故障现象。 如果故障现象仍然存在,请参阅"燃料供给"。

燃油供给


注意

持续盘车不要超过30秒。 再次盘车前,让起动马达先冷却2分钟。


  1. 目视检查油箱的燃油。 燃油表可能出现故障。

  1. 确保燃油供应阀(如有配备)处在完全打开位置。

  1. 如果温度低于 0 °C (32 °F),检查燃油有无凝固(结蜡)。

  1. 检查燃油的粗滤器 / 油水分离器是否含水。

  1. 检查供油管路有无阻塞。

  1. 检查低压燃油管是否拧紧并正确固定。

  1. 检查燃油滤清器。

  1. 检查柴油是否受污染。 请参阅系统操作 、测试与调整, "燃油质量 - 测试"。

  1. 检查燃油系统内是否有空气。 请参阅系统操作、测试与调整, "燃油混入空气 - 测试"。

  1. 确保燃油系统已充注。 请参阅系统操作、测试与调整, "燃油系统 - 注油"。

  1. 检查燃油压力。 请参阅系统操作、测试与调整, "燃油混入空气 - 测试"。

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