摘要
为诊断发动机噪声或故障及评估皮带寿命,设计了基于传感器阵列的全光学实验装置,用于非接触式测量正时皮带振动的温度、振幅和张力;研究了振幅-转速、张力-时间的关系,并验证了皮带在冷-热态工况下的耐久性.测量结果表明:某正时皮带处于95℃的热态工况下,长边在发动机转速2 000r/min下有最大振幅,短边在5 600r/min下有最大振幅.耐久性试验结果表明:将初始安装张力下调至(200±40)N来控制皮带振动,对发动机运行不会构成风险.
In order to diagnose the engine noise or fault and evaluate the belt service life ,a complete optical experimental apparatus based on sensors array was proposed to measure the amplitude ,tension and temperature of the timing belt .The amplitude‐revolution ,tension‐time relationship were studied , and the belt durability in cold and hot states was verified .The measurement results show that when the timing belt is in a hot state of 95 ℃ ,the revolution with maximum amplitude of the long side oc‐curs at 2 000 r/min ,and that of the short side is at 5 600 r/min .The durability test results show that it is acceptable to adjust the initial installation tension of timing belt to （200 ± 40） N ,w hich will not cause risk to engine operation .
出处
《华中科技大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2016年第2期9-14,共6页
Journal of Huazhong University of Science and Technology(Natural Science Edition)
基金
国家自然科学基金资助项目(61273158)
关键词
正时皮带
热态
冷态
振动
光学测量
耐久性
timing belt
hot state
cold state
vibration
optical measurement
durability
