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    • Measurement Method of Piston Assembly Friction Force During Operation of High-Power Diesel Engines
    DOI：10.13949/j.cnki.nrjgc.2023.04.011
    Key Words:high-power diesel engine  piston assembly–cylinder liner  friction force  connecting rod force  measurement  wireless measurement  operating condition
    Author NameAffiliationE-mail
    MENG Xianghui* School of Mechanical Engineering， Shanghai Jiao Tong University， Shanghai 200240， China xhmeng@sjtu.edu.cn 
    ZHANG Yong* Weichai Power Co.， Ltd.， Weifang 261000， China zhangyong11@weichai.com 
    WANG Lingjin Weichai Power Co.， Ltd.， Weifang 261000， China zhangyong11@weichai.com 
    XU Xiaoying Weichai Power Co.， Ltd.， Weifang 261000， China zhangyong11@weichai.com 
    LI Rui Yantai Research Institute， Harbin Engineering University， Yantai 264000， China lirui_sjtu@sjtu.edu.cn 
    Lü Bugao School of Mechanical Engineering， Shanghai Jiao Tong University， Shanghai 200240， China bugaolv@sjtu.edu.cn 
    YIN Jiabao School of Mechanical Engineering， Shanghai Jiao Tong University， Shanghai 200240， China jia-bao@sjtu.edu.cn 
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    Abstract:An online measurement method of piston assembly friction force based on wireless measurement of connecting rod force was developed. The principle of friction measurement and the wireless measurement scheme of connecting rod force were presented. On the basis of calibration and verification of the measurement system， the online measurement of piston assembly friction force under operating conditions of a high-power diesel engine was conducted. The results show that the developed measurement method has high accuracy and can capture the change of piston assembly friction during engine operation with a good consistency， which can provide experimental support for the design of piston assemblies with low friction in engines.
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