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    • Optimization of Structural Parameters of Con-Rod Small End of a Diesel Engine
    DOI：
    Key Words:IC engine  connecting rod  small end  deformation compatibility  optimization
    Author NameAffiliation
    ZHANG Limin, WANG Yanrong, XIONG Biwei, YAO Liangyu, XU Chunguang China North Engine Research Institute, Tianjin 300400, China 
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    Abstract:The optimization of structural parameters of the con-rod small end of a diesel engine was presented. By means of the DOE method, a set of optimal parameters could be obtained using the maximum contact pressure and the maximum compressive stress at the supporting rib fillet as criteria, and the stress distribution on the bush as constraint. The study reveals that the thickness and fillet radius of the support rib are the main factors influencing the joint deformation compatibility of the con-rod small end. Then the results of the EHD simulation and bench test indicate that the contact pressure of the optimized structure is obviously decreased and its distribution is more even.
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