缸孔成型降低摩擦功贡献研究
Research on the Contribution of Reducing Friction in Cylinder Bore Forming
齐晓慧 1赵宝新 1常雪嵩 1纪雷 1秦少博1
作者信息
- 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
- 折叠
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%.
Abstract
Cylinder bore forming is to design the cylinder bore into a cylindrical surface with profile,mak-ing 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 com-paring 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 opti-mized 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Key words
Cylinder bore profile/friction work/Simulation analysis引用本文复制引用
出版年
2024
NETL
NSTL
万方数据