缸套表面分区差异织构的润滑摩擦性能研究  

Research on Tribological Performance of the Partition Discriminating Textured Cylinder Liner

作　　者：佟德辉 尹必峰[2] 徐波 符永宏[3] 华希俊[3] 黄国龙 Tong Dehui;Yin Bifeng;Xu Bo;Fu Yonghong;Hua Xijun;Huang Guolong(State Key Laboratory of Engine Reliability,Weichai Power Company Limited,Weifang 261001,China;School of Automobile and Traffic Engineering,Jiangsu University,Zhenjiang 212013,China;School of Mechanical Engineering,Jiangsu University,Zhenjiang 212013,China)

机构地区：[1]潍柴动力股份有限公司内燃机可靠性国家重点实验室,山东潍坊261001 [2]江苏大学汽车与交通工程学院,江苏镇江212013 [3]江苏大学机械工程学院,江苏镇江212013

出　　处：《内燃机学报》2021年第5期451-458,共8页Transactions of Csice

基　　金：国家自然科学基金资助项目(51375213);内燃机可靠性国家重点实验室开放基金资助项目(skler-201808)。

摘　　要：基于某4缸机开展了缸套分区织构的数值模拟计算,确定分区差异织构的设计方案,即在缸套上止点附近区域内加工面积占有率为10%的微凹坑(半径为25μm、深度为8μm),而在行程中部区域加工面积占有率为5%的微凹坑(半径为25μm、深度为8μm);利用摩擦磨损试验机进行缸套-活塞环基础摩擦学测试,验证了缸套分区差异织构的可行性和适用性;采用激光微织构手段加工了4种不同缸套织构方案,开展发动机台架性能试验.倒拖试验结果表明:在缸套上止点区域加工面积占有率为10%凹坑织构,同时在活塞行程中部加工面积占有率为5%凹坑织构的缸套分区差异织构方案,能够降低整机摩擦损失,具有良好的润滑减摩效果.A lubrication model of the textured cylinder liner and piston ring(CL-PR)was established on a four-cylinder gasoline engine for investigating the effects of micro-dimple distribution patterns on the tribological performance.The simulation results indicate that texturing the micro-dimples with 10%area ratio near the fired top dead center(TDC)and with 5%area ratio at the middle position of the liner could reduce the friction loss of the CLPR.Then the friction test was conducted on a friction-wear test bench to prove the feasibility and applicability of the partition discriminating textured liner.Finally a set of engine bench tests were carried out for four liner texturing schemes which were processed by laser on the liner surface.The engine test results show that texturing the microdimples with 10%area ratio near the fired TDC and with 5%area ratio at the middle position of the liner can reduce the friction torque,giving positive friction-reducing effects.

关 键 词：缸套 表面织构 润滑 摩擦 激光 

分 类 号：TK411.9[动力工程及工程热物理—动力机械及工程]