C-9 Engines for Caterpillar Built Machines Caterpillar


Excessive Engine Oil Consumption - Inspect

Usage:

TK711 101

发动机外部漏油

检查曲轴两端的油封是否漏油。 查看油底壳密封垫和润滑系统所有接头是否漏油。 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。

机油漏入气缸燃烧室

机油漏进气缸燃烧室会导致发动机冒蓝烟。 机油可能通过五种途径漏入气缸燃烧室:

  • 磨损的气门导管和气门杆之间的机油渗漏

  • 磨损或损坏的部件(活塞、活塞环或肮脏的回油孔)

  • 压缩环和/或中间环安装不正确

  • 机油通过涡轮增压器轴的叶轮端的密封环漏入

  • 单体喷油器安装不当

使用粘度不对的机油也可能造成机油消耗量过大。 燃油漏进曲轴箱或发动机温度升高都会使机油粘度变稀。

Caterpillar Information System:

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