摘要
以某轻型柴油机活塞为研究对象,基于型线设计理论,设计4种活塞裙部型线方案。利用活塞动力学分析软件进行分析计算,研究活塞裙部型线对活塞二阶运动和裙部摩擦磨损的影响,并对L 4方案的活塞进行耐久试验。结果表明:改变活塞裙部型线可以较好地改善裙部润滑;与L 1方案相比,L 4方案的活塞裙部最大压力降低了约25.3%,裙部最大累积磨损载荷降低了约32.1%,有效地改善了裙部摩擦磨损问题;耐久试验验证了仿真分析结果的正确性。该分析可以为轻型柴油机活塞裙部摩擦磨损提供借鉴。
Taking the piston of a light vehicle diesel engine as the research object,four types of piston skirt profile are carried out based on the profile design theory.Using piston dynamic analysis software to analyze and calculate the influence of skirt profiles on piston second motion and skirt wear,and the endurance test is carried out on the engine equipped with the piston of L 4 scheme.The results show that changing the skirt profile,the skirt lubrication is improved significantly.Compared with scheme L 1,the maximum skirt pressure is reduced 25.3%and the maximum skirt wear load is reduced 32.1%of scheme L 4 piston skirt,which effectively solves the skirt friction and wear.The accuracy of dynamic simulation is verified after endurance test.This dynamic analysis can provide a guidance for light vehicle diesel engine piston skirt friction and wear.
作者
郭金宝
陈丽
邢小兵
周璐璐
韩立国
GUO Jinbao;CHEN Li;XING Xiaobing;ZHOU Lulu;HAN Liguo(State Key Laboratory of Engine Reliability,Weifang 261061,China;Weichai Power Co.,Ltd.,Weifang 261061,China)
出处
《内燃机与动力装置》
2021年第5期41-46,共6页
Internal Combustion Engine & Powerplant
基金
山东省重点研发计划项目(2016GRC3205)。
