郭金宝1,2，陈丽1,2*，邢小兵1，周璐璐1，韩立国1,2
1．滨州渤海活塞有限公司，山东 滨州 256602；2.山东省发动机活塞摩擦副重点实验室，山东 滨州 256602
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L4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L1方案相比，L4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。
关键词：活塞；裙部型线；动力学分析；磨损
Abstract：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 L4 scheme. The results show that changing the skirt profile, the skirt lubrication is improved significantly. Compared with scheme L1, the maximum skirt pressure is reduced 25.3% and the maximum skirt wear load is reduced 32.1% of scheme L4 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.
Keywords:piston; skirt profile; dynamic analysis; wear
|
