内燃机活塞表面瞬态温度传感器的研制

中国机械工程 ›› 2015, Vol. 26 ›› Issue (9): 1142-1147.

内燃机活塞表面瞬态温度传感器的研制

崔云先1;赵家慧1;刘友2;丁万昱1;盛晓幸1;宫刻1

1.大连交通大学辽宁省高等学校数字化设计与制造重点实验室,大连,116028
2.哈尔滨工程大学,哈尔滨,150001

出版日期:2015-05-10 发布日期:2015-05-08
基金资助:
国家自然科学基金资助项目(51472039)；辽宁省科技计划资助项目(2012220007)

Development of Transient Surface Temperature Sensor on Internal Combustion Piston

Cui Yunxian1;Zhao Jiahui1;Liu You2;Ding Wanyu1;Sheng Xiaoxing1;Gong Ke1

1.Higher Institutions Key Laboratory of Digital Design and Manufacture in Liaoning Province,Dalian Jiaotong University, Dalian, Liaoning, 116028
2.Harbin Engineering University,Harbin,150001

Online:2015-05-10 Published:2015-05-08
Supported by:
National Natural Science Foundation of China（No. 51472039）;Liaoning Provincial Science and Technology program ( No. 2012220007)

摘要/Abstract

摘要：

针对内燃机活塞表面温度变化迅速的特点,研制了一种瞬态温度传感器用于测量活塞表面温度。采用直流脉冲磁控溅射的方法将NiCr薄膜直接溅射沉积在高温烧结后嵌有NiCr、NiSi丝的陶瓷元件端面,NiCr薄膜外侧溅射Si3N4保护膜。传感器外壁选用带螺纹的304不锈钢作为铠装套筒。采用自行研制的薄膜热电偶静动态标定系统对所研制的瞬态温度传感器进行标定,结果表明:所研制的传感器在50~400℃范围内具有良好的线性和热稳定性，其塞贝克系数在39~41μV/K之间,非线性误差小于0.34%,重复性好;热接点薄膜厚度为355nm时,传感器的响应时间为41.7μs,且响应时间随着薄膜厚度的增大而增加;该瞬态温度传感器可以满足曲轴转速为1800r/min的内燃机活塞表面瞬态温度测试的需求。

关键词: 内燃机活塞, 瞬态温度, 塞贝克系数, 时间常数

Abstract:

According to the internal combustion engine piston surface temperature rapidly changing situations,this paper developed a transient temperature sensor for measuring the piston surface temperature. By using a DC pulse magnetron sputtering method sputtering deposited NiCr film directly on end face of ceramic element which was sintered in the high-temperature and embedded with NiCr, NiSi wire, sputtering Si3N4 protective film on the sensor's outside of NiCr film.The sensors' outer wall used threaded 304 stainless steel as armored sleeve. To calibrate the designed transient temperature sensor by using self-developed thin-film thermocouple static and dynamic calibration system, the results show: that the developed sensor has good linearity and thermal stability in the range of 50~400℃. Its Seebeck coefficient is between 39μV/K to 41μV/K, the nonlinear error is less than 0.34%, good repeatability. The thickness of hot junction thin film is as 355nm, the sensor's response time is as 41.7μs, and the response time increases with the film thickness increases. The transient temperature sensor can meet the crankshaft speed to 1800r/min of an internal combustion engine piston surface transient temperature testing requirements.

Key words: internal combustion piston, transient temperature, Seeback coefficient, time constant

中图分类号:

TH811

崔云先, 赵家慧, 刘友, 丁万昱, 盛晓幸, 宫刻. 内燃机活塞表面瞬态温度传感器的研制[J]. 中国机械工程, 2015, 26(9): 1142-1147.

Cui Yunxian, Zhao Jiahui, Liu You, Ding Wanyu, Sheng Xiaoxing, Gong Ke. Development of Transient Surface Temperature Sensor on Internal Combustion Piston[J]. China Mechanical Engineering, 2015, 26(9): 1142-1147.

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