• Home
  • About CICEE
  • Editorial Board
  • Publication Ethics
  • 中文

    • Lubrication Analysis for Transient Non-Newtonian of the Cam–Roller Pair in An Internal Combustion Engine
    DOI：10.13949/j.cnki.nrjgc.2023.03.004
    Key Words:cam–roller pair  non-Newtonian fluid  roller slippage  limited lubricant supply  lubricating viscosity
    Author NameAffiliationE-mail
    CHAO Shen* State Key Laboratory of Engine Reliability， Weifang 261061， China
    Weichai Power Co.， Ltd.， Weifang 261061， China     		chaoshen@weichai.com 
    LIU Cheng State Key Laboratory of Engine Reliability， Weifang 261061， China
    Weichai Power Co.， Ltd.， Weifang 261061， China     		 
    ZHU Guixiang State Key Laboratory of Engine Reliability， Weifang 261061， China
    Weichai Power Co.， Ltd.， Weifang 261061， China     		 
    GAO Yuanjie School of Mechanical and Automotive Engineering， Qingdao University of Technology， Qingdao 266520， China  
    GUO Feng* School of Mechanical and Automotive Engineering， Qingdao University of Technology， Qingdao 266520， China mefguo01@qut.edu.cn 
    LI Shuyi School of Mechanical and Automotive Engineering， Qingdao University of Technology， Qingdao 266520， China  
    Hits: 1504
    Download times: 999
    Abstract:A non-Newtonian starved transient lubrication model of the cam–roller pair in an internal combustion engine was established， and the film thickness ratio was used to assess the lubrication behavior at each cam rotation angle. The lubrication of the contact pair in the case of roller slippage was studied， and the influence of slide–roll ratios on the film thickness ratios was analyzed. It was found that the larger the slide–roll ratios， the more the cam rotation angles with the film thickness ratios less than 1.5. Then the influence of oil supply on the film thickness ratios was discussed， and the critical oil layer thickness at which the film thickness ratios decreased significantly was given. Finally， the changes of the lubricating viscosities at the actual working temperatures were considered to explore the influence of various viscosities on the lubricating states. It was found that when the viscosity was 0.01 Pa·s， the lubrication state of some angles entered boundary lubrication. In certain working conditions the friction coefficients decreased gradually with the decrease of lubricating viscosities.
    View Full Text  View/Add Comment  Download reader