基于多目标优化算法的发动机活塞环型线低摩擦设计研究  

Research on Low Friction Design of Engine Piston Ring Profile Basedon Multi-Objective Optimization Algorithm

作　　者：饶聪 梁福祥[1] 翟黎明 韩旭东[1] 阮志强 Rao Cong;Liang Fuxiang;Zhai Liming;Han Xudong;Ruan Zhiqiang(FAW Jiefang Automotive Co.,Ltd.,Wuxi 214000)

机构地区：[1]一汽解放汽车有限公司,无锡214000

出　　处：《汽车工程师》2023年第1期24-30,共7页Automotive Engineer

摘　　要：以AVL P&R活塞环动力学计算为基础,通过仿真模拟计算了摩擦磨损情况,在iSIGHT平台中整合了试验设计法、响应面方法、多目标遗传优化算法以实现活塞环优化设计。优化结果表明,活塞环型线设计参数中上桶面高度对润滑油耗影响较大,下桶面高度和桶面偏移对活塞环和缸套磨损量影响较大,切向弹力对窜气量影响较大。最终优化后活塞环的1000 h磨损量由11.1μm下降到6.3μm,降低43.2%。This paper calculated friction and wear through simulation based on AVL P&R piston ring dynamic calculation.The design of experiment method,response surface method and multi-objective genetic optimization algorithm were integrated on iSIGHT platform for optimal design of piston ring.The optimization results show that the height of upper barrel surface has a great influence on the oil consumption,the height of lower barrel surface and barrel surface offset have a great influence on the wear of piston ring and cylinder liner,the tangential elasticity has a great influence on the gas blow-by.Compared with initial piston ring,the wear of the optimal piston ring at 1000 h reduces 43.2%from 11.1μm to 6.3μm.

关 键 词：活塞环 磨损 多目标优化 

分 类 号：U464.133.1[机械工程—车辆工程]