3408B and 3412C Generator Set Engines Caterpillar


General Information

Usage:

3408B 2BG
Caterpillar 3408C 和 3412C 发电机组发动机采用压力式燃油系统。 发动机配有单独的喷油泵和燃油管。 每个缸都具有一台喷油泵。 喷油泵提供以下功能:

  • 计量到每个气缸喷油嘴的高压燃油

  • 为每个气缸的喷油嘴输送高压燃油

发动机润滑油经过冷却和过滤。 发动机冷却油由齿轮泵提供。 旁通阀提供以下优势:

  • 即使机油粘度高,流向发动机零件的润滑油也会畅通无阻。

  • 即使机油冷却器堵塞,润滑油的流动也畅通无阻。

  • 即使机油滤芯堵塞,润滑油的流动也畅通无阻。

起动发动机

发动机盘车中,检查发动机指示灯应当发光。 达到机油压力后,检查发动机指示灯应当熄灭。 在低于 0°C (32°F) 的温度下,可能需要向空气滤清器进口中喷入起动液。 如果发动机在 30 秒钟内无法起动,应释放起动马达开关。 再次起动之前,应使起动马达能冷却两分钟。 关于推荐程序,请参阅操作和保养。


注意

过量使用乙醚(开始流动)会造成活塞和活塞环损坏。 只在寒冷天气起动时才使用乙醚。


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