Engine Oil in Exhaust System
可能的原因
- 涡轮增压器密封故障
- 气门导管密封磨损或有缺陷
- 气门导管磨损
- 活塞环磨损
- 缸套划伤或磨损
建议措施
涡轮增压器密封故障
检查进气歧管和排气歧管有无机油。 如果存在机油,更换涡轮增压器。
气门导管密封磨损或有缺陷
检查气门导管密封是否磨损和损坏。 如有必要,更换气门导管密封。
气门导管磨损
检查气门导管是否磨损。 请参阅技术参数手册,了解气门导管的最大允许磨损量。 如有必要,修理缸盖。
活塞环磨损
过度磨损的活塞环可造成曲轴箱压力过高。 曲轴箱多余的压力会造成曲轴箱呼吸器产生高于正常水平的曲轴箱窜气量。 使用 8T-2700 窜气/空气流量指示器 检查曲轴箱窜气量。 测试步骤在专门说明书, SEHS8712中提供。 根据需要检查活塞环和安装新零件。
气缸壁划伤或磨损
检查缸套是否损坏。 镗磨缸套以去除划伤。 如有必要,请安装新缸套。
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