基于温升合理性的机油温度传感器故障诊断研究  

Study of Oil Temperature Sensor Diagnostic Algorithm Based on Temperature Increase

作　　者：李志强 缪丰隆 李家荣 LI Zhi-qiang;MIAO Feng-long;LI Jia-rong(Hunan DEUTZ Power Co.,Ltd.,Changsha 410000,China)

机构地区：[1]湖南道依茨动力股份有限公司,长沙410000

出　　处：《内燃机与配件》2021年第24期4-6,共3页Internal Combustion Engine & Parts

摘　　要：当机油温度传感器在安装孔中松动以致脱落时,传感器探头不再和机油相接触。此时传感器输出电压信号仍在合理范围内,但计算出的温度不再是真实的机油温度值。提出一种基于温升合理性的故障诊断算法,来准确识别上述故障。最后建立模型并验证算法的有效性。When the oil temperature sensor is out of the installing position,the sensor sample pole is not touched with the oil fluid.But the sensor sample voltage is still in the valid rage.The result is that the calculating temperature according to the sensor sample voltage is different with the actual oil temperature.We develop an algorithm based on the oil temperature increasing character to judge the signal implausible.At last we set up the module according the above new algorithm to verify its usefulness.

关 键 词：机油温度传感器 故障诊断 温升合理性 

分 类 号：U464.233[机械工程—车辆工程]