浅谈汽车润滑系统故障诊断与维修
2017-08-24李源
李源
DOI:10.16660/j.cnki.1674-098X.2017.14.020
摘 要:该文就驾驶员送修车辆的故障现象及车辆的实际工况,通过常规故障诊断思路进行了判断分析排除,初步掌握了该车的故障原因;接着按照检修流程由简到难的次序进行检查,一方面是来印证之前的分析判断是否正确;另一方面也是找出真实故障点。之后通过对润滑系统的故障分析,我们发现最可能出现的故障是:润滑油变质、润滑油压力过高、润滑油压力过低、润滑油消耗过多、润滑油平面升高等,并对故障现象、原因、排除进行了阐述。
关键词:故障诊断 检查维修 经验教训
中图分类号:U472 文献标识码:A 文章编号:1674-098X(2017)05(b)-0020-02
Discussion on Fault Diagnosis and Maintenance of Automotive Lubricating System
Li Yuan
(Journal of Kunming Metallurgy College, Kunming Yunnan, 650033, China)
Abstract: Provided that the drivers vehicle fault phenomenon and the vehicles actual condition, the conventional fault diagnosis was applied to initially analyze and judge the potential causes of the car defect. In order to validate the previous analysis and judgment as well as find out the real fault cause, the vehicle was inspected based on a simple to difficult repair process. After analyzing the failure of the lubrication system, we found the most likely failure is: modification of lubricating oil, lubricating oil pressure, oil pressure is too low, excessive consumption of lubricating oil, lubricating oil level rising. And the fault phenomenon, reason, exclusion are described.
Key Words:Fault diagnosis;Inspection and maintenance;Experience and lessons
汽車润滑系统简单点说就是为发动机提供润滑的各种部件及润滑油(机油)的总称。其基本工作任务就是将润滑油输送到发动机中具有相对运动的全部零件(曲轴与轴承、凸轮轴与轴承、活塞与气缸等)上,在摩擦表面之间形成一层润滑油膜,降低零件摩擦,减少动力消耗和零件磨损。但是,当润滑系统出现故障时,其作用就不能充分发挥,不但会使发动机各运动零件的表面得不到充分的润滑,加剧磨损,还可能影响发动机的正常运转,甚至导致严重的后果。
1 应用实例
1.1 故障现象
驾驶员将一辆2004年款的奇瑞QQ两厢轿车送到修理厂进行维修,并向前台接待人员反映,该车在起动时点火困难,需要加大油门才能发动,发动机水温偏高,经常熄火,同时,由于不经常使用该车,将近两年没有做过发动机保养(更换过机油)。……
