C15 and C18 Petrolem Generator Set Engines Caterpillar


Engine Stalls at Low RPM

Usage:

C15 115

可能的原因

  • 单体喷油器

  • 燃油供应

  • 空气供应

  • 附属设备

建议措施

单体喷油器

  1. 检查电子控制模块 (ECM) 接头 J1/P1 和 J2/P2 是否正确安装。 检查单体喷油器的气门室盖接头的安装是否正确。 请参考故障诊断与排除, "电气接头 - 检查"。

  1. 使用 Caterpillar 电子技师 (ET) 进行 "Injector Solenoid Test"(喷油器电磁阀测试),以确定 ECM 是否向所有喷油器电磁阀都通电。

  1. 使用 Cat ET 进行 "Cylinder Cutout Test"(断缸测试)以确定任何可能缺火的喷油器。 请参考故障诊断与排除, "喷油器电磁阀 - 测试"。

燃油供应

  1. 检查燃油压力。 请参考系统操作/测试和调整。

  1. 检查燃油管路有无以下故障: 堵塞, 管路坍陷 和 管路挤压. 如果发现燃油管路有故障,请修理和/或更换管路。

  1. 检查油箱中有无会阻塞供油的异物。


    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. 如果执行了以下任一步骤,则向燃油系统充油:

    • 更换燃油滤清器

    • 维护低压供油油路

    • 更换单体喷油器

    注: 低压供油管路上的目测表有助于诊断燃油中有无空气。 请参考系统操作/测试和调整。

  1. 低温天气会对燃油特性造成不良影响。 请参考操作和保养手册。

  1. 拖动发动机时,检查流经燃油滤清器之后的燃油压力。 有关正确的压力值,请参考系统操作/测试和调整手册。 如果燃油压力低,请更换燃油滤清器。 如果更换后燃油压力仍然偏低,请检查以下各项: 燃油输油泵 和 燃油压力调节阀.

空气供应

检查进气系统中有无堵塞。 请参考系统操作/测试和调整。

附属设备

检查所有附属设备有无可能引起发动机超负载的故障。 修理或更换所有损坏的部件。

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