缸孔成型降低摩擦功贡献研究  

Research on the Contribution of Reducing Friction in Cylinder Bore Forming

作　　者：齐晓慧[1] 赵宝新[1] 常雪嵩 纪雷[1] 秦少博 QI Xiaohui;ZHAO Baoxin;CHANG Xuesong;JI Lei;QIN Shaobo(Great Wall Motor Co.,Ltd.,Hebei Automotive Engine Technology Innovation Center,Baoding,Hebei,071000,China)

机构地区：[1]长城汽车股份有限公司、河北省车用发动机技术创新中心,河北保定071000

出　　处：《小型内燃机与车辆技术》2024年第2期6-9,共4页Small Internal Combustion Engine and Vehicle Technique

摘　　要：缸孔成型是将缸孔设计成带型线的圆柱面,使其在工作状态下的热变形接近圆柱形,进而可以降低摩擦功,提高发动机的热效率。通过AVL公司多体动力学软件PR对自行设计的不同型线的缸孔进行仿真分析,对比摩擦功变化、同时兼顾漏气量及敲击能的变化情况,得到易于加工并能降低摩擦功的缸孔型线,优化后的带型线缸孔较无型线缸孔的原方案降低摩擦功约21%。Cylinder bore forming is to design the cylinder bore into a cylindrical surface with profile,making its thermal deformation close to the cylindrical under working conditions,thus reducing the friction work and improving the thermal efficiency of the engine.Through the multi-body dynamics software PR of AVL company,the self-designed cylinder bores of different profiles were simulated and analyzed.By comparing the changes of friction work,taking into account the changes of air leakage and knocking energy,the cylinder bore profiles that are easy to process and can reduce friction work were obtained.The optimized cylinder bores with profiles reduced the friction work by about 21%compared with the original scheme without profiles.

关 键 词：缸孔型线 摩擦功 仿真分析 

分 类 号：TK413.2[动力工程及工程热物理—动力机械及工程]