内燃机工程2025，Vol.46Issue(4)：1-9,9.DOI:10.13949/j.cnki.nrjgc.2025.04.001
船用柴油机全浮式活塞销摩擦副型线优化设计
Profile Optimization of Floating Piston Pin Friction Pairs of a Marine Diesel Engine
孙稀玙 1付艳 1高礼宁 1巫立民 2张萌 1崔毅3
作者信息
- 1. 上海交通大学 新能源动力研究所,上海 200240
- 2. 中国船舶集团有限公司第七一一研究所,上海 201108
- 3. 上海交通大学 新能源动力研究所,上海 200240||高新船舶与深海开发装备协同创新中心,上海 200240
- 折叠
摘要
Abstract
To reduce the wear of the full-floating piston pin friction pair in a certain high-power marine diesel engine,a polynomial profile expression method with continuous curvature at the segment was proposed,and the profile of the pin hole was optimized.A sub-model for the contact area between the pin and pin hole was established based on the thermo-mechanical coupling model of the piston pin friction pair for pin hole profile optimization,which can improve computational efficiency by 120 times.A high-order curve was designed based on the foundation of the previous job to replace the original conical profile.The pin hole profile was optimized using the sub-model and a Python-driven automatic surface design method,resulting in a 12.7%reduction in the maximum stress of the pin hole.A thermo-elastic hydrodynamic lubrication model for the piston-pin-connecting rod was constructed to compare the lubrication and wear performance before and after the pin hole profile optimization.The effectiveness of the profile optimization was verified through a single-cylinder engine test.关键词
全浮式活塞销/摩擦副/型线优化/磨损Key words
full-floating piston pin/friction pair/profile optimization/wear分类
能源科技引用本文复制引用
孙稀玙,付艳,高礼宁,巫立民,张萌,崔毅..船用柴油机全浮式活塞销摩擦副型线优化设计[J].内燃机工程,2025,46(4):1-9,9.
