朱耀文^1，2，徐长科^1,2，王秀荣^1,2，刘丹丹^1,2，李欢玲^1,2

（1.内燃机可靠性国家重点实验室，山东 潍坊  261061；

2.潍柴动力股份有限公司，山东潍坊  261061）

    摘要：本文结合某型柴油机机油压力温度传感器故障案例，通过对传感器进行特性检测、振动分析、装机复试，以及借助X光检测，实物拆检分析等一系列措施，由浅及深地深入剖析最终确定了问题的根本原因，提出改进优化方案，为发动机上其他传感器的故障分析提供了参考。

    关键词：机油压力温度传感器；发动机；焊接；振动

    Abstract: Based on diesel engine of oil pressure and temperature sensor,through the study of the characteristics of the sensor,vibration analysis,installation retest,as well as dismantling and physical analysis by means of X-ray inspection,the cause of the problem was found and improvement scheme was also put forward,the suggestions in this paper can provide help and reterence for similar problems.

    Key Words: Oil Pressure and Temperature Sensor；Engine；Welding；Vibration