C-10 and C-12 Industrial Engines Caterpillar


Excessive Engine Oil Consumption - Inspect

Usage:

CPT372 1WZ

发动机外部的发动机机油漏油

检查曲轴两端的油封是否漏油。 查看发动机油底壳密封垫和所有润滑系统接头有无渗漏。 查看曲轴箱通气装置是否有任何漏油。 这可能是由于燃烧气体从活塞周围的漏出导致的。 肮脏的曲轴箱通气装置会造成曲轴箱压力高。 肮脏的曲轴箱通气装置也会导致密封垫和密封渗漏。

发动机机油漏进气缸的燃烧区域

发动机机油漏进气缸的燃烧区域会造成排气冒蓝烟。 机油可能通过四种途径漏入气缸的燃烧区域:

  • 通过磨损的气门导管和气门杆之间漏入

  • 磨损或损坏的部件(活塞、活塞环或油环槽内肮脏的发动机机油回油孔)

  • 压缩环和/或中间环安装不正确

  • 通过涡轮增压器轴的密封环漏入

  • 曲轴箱机油加注过满

  • 错误的油尺或油尺导引管。

如果使用的发动机机油粘度不对,也会造成发动机机油消耗量过多。 燃油漏进曲轴箱或发动机温度升高都会使发动机机油粘度变稀。

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