红外技术, 2014, 36 (3): 244, 网络出版: 2014-04-09
基于红外测温的柴油机排气温度不均匀度诊断
Diagnosis of Exhaust Temperature Non-uniformity of Diesel Engine Based on Infrared Temperature Measurement
摘要
设计了柴油机排气红外监测试验台, 利用红外热像仪在不同运行工况下测量 6135柴油机歧管表面温度, 得到了由排气管表面温度确定柴油机排烟气体温度的计算方法。分析了各缸排气歧管表面温度不均匀度与排烟温度不均匀度的关系, 研究了表面发射率随温度变化的关系, 验证了红外监测技术在柴油机排气不均匀度诊断和预测上的可行性和有效性。
Abstract
This paper designs a test-bed which is applied to detect exhaust temperature of a diesel engine by infrared measurement. The exhaust pipe surface temperature of 6135 diesel engine in different operating conditions was measured by infrared thermal imager. The calculating method of the discharge temperature of a diesel engine from the surface temperature of exhaust pipe was obtained. The relationship between discharge temperature non-uniformity and the surface temperature non-uniformity of exhaust pipe was analysed. In addition, the feasibility and effectiveness of infrared inspecting technology which is applied to diagnosis and prediction of the diesel engine exhaust temperature non-uniformity was verified.
参考文献
[1] 吕事桂, 李东臻, 杨立, 等. 动力系统热负荷红外在线监测定量识别[J].红外技术, 2012, 34(7): 408-415.
[2] 张宝霞, 寸立岗, 安永祥, 等.机车柴油机排气支管红外测温方法的研究[J].兰州交通大学学报:自然科学版, 2004, 23(6): 119-121.
[3] 王广武. 浅淡东风 4系列机车柴油机排气管发红的故障处理[J].内燃机车, 1999(6): 45-46.
[4] 蒙绪武. 柴油机排气温度过高的原因分析和解决措施 [J]. 船海工程, 2003(6): 37-38.
[5] 张希海. 6300柴油机组排气及出水温度异常故障排除[J].柴油机, 2008, 30(4): 52-53.
[6] 孙天. 红外测温技术在发动机故障诊断中的应用 [J]. 工程机械, 2006, 37: 60-61.
[7] 135系列柴油机使用保养说明书 [R].上海: 上海柴油机厂, 1986.
[8] 杨立, 杨桢. 红外热成像测温原理与技术 [M].北京: 科学出版社, 2012.
[9] 霍尔曼. 传热学 [M].北京: 机械工业出版社, 2011.
杨昆, 杨立, 苏高, 范春利. 基于红外测温的柴油机排气温度不均匀度诊断[J]. 红外技术, 2014, 36(3): 244. YANG Kun, YANG Li, SU Gao, FAN Chun-li. Diagnosis of Exhaust Temperature Non-uniformity of Diesel Engine Based on Infrared Temperature Measurement[J]. Infrared Technology, 2014, 36(3): 244.