农业机械学报2012，Vol.43Issue(1)：33-36,4.DOI:10.6041/j.issn.1000-1298.2012.01.007
天然气发动机活塞稳态温度存储式测量系统
Steady-state Temperature Measurement on the CNG Engine Piston
摘要
Abstract
A set of steady temperature measurement device was developed. A high accuracy of ± 1℃ could be obtained by the system as long as the error was calibrated. The piston temperature was measured at the engine speeds of 1 000 r/min, 1 500 r/min and 2 100 r/min on the external characteristics of the engine of EQD180N - 20, respectively. The piston temperature variation test was performed from 1 000 r/min to 2 100 r/min simultaneously. The results show that the proposed system is stable and reliable. On the external characteristics, the temperature of each feature point increased firstly and then declined slightly as the engine speed increased, and a maximum value was observed at 1 500 r/min; on the stable working condition, the highest temperature appeared in the piston top surface with a value of 264℃ , The first piston ring slot temperature is about 2151.关键词
发动机/活塞/稳态温度/存储式测量Key words
Engine/ Piston/ Steady-state temperature/ Memory measurement分类
能源科技引用本文复制引用
张志勇,黄荣华,王兆文,程伟..天然气发动机活塞稳态温度存储式测量系统[J].农业机械学报,2012,43(1):33-36,4.基金项目
国家高技术研究发展计划(863计划)资助项目(2008AA11A121) （863计划）
