活塞环-缸套动接触边界传热模型研究  

A Study on Heat Transfer Model for the Dynamic Contact Boundary Between Piston Ring and Cylinder Liner

作　　者：孙正[1] 黄钰期[1] 俞小莉[1] Sun Zheng;Huang Yuqi;Yu Xiaoli(College of Energy Engineering,Zhejiang University,Hangzhou 310027)

机构地区：[1]浙江大学能源工程学院,杭州310027

出　　处：《汽车工程》2018年第3期349-355,共7页Automotive Engineering

基　　金：国家自然科学基金(51206141);中央高校基本科研业务费专项资金(2016QNA4011)资助

摘　　要：由于润滑油膜内部存在多热效应耦合作用,现有内燃机流固耦合计算中常采用的活塞环-缸套间传热经验估计或热阻模型的计算结果与实际情况存在较大差异。为此本文中在线接触润滑模型的基础上,研究各热效应随工况的变化规律和相互间的耦合作用,建立了基于CFD流动传热计算结果修正的活塞环-缸套传热模型。结果表明,与热阻传热模型相比,本文中建立的修正传热模型算得的活塞温度场更符合实测的活塞温度数据;该模型经无量纲化处理后,可推广应用于其他活塞环-缸套传热计算。In fluid-solid coupling calculation of internal combustion engine,due to multiple thermal effects coupling,the calculation results by using empirical formulae or thermal resistance model are quite different from real situation.In view of this,on the basis of liner contact lubricating model,the changing law of different thermal effects with working conditions and their mutual coupling effects are studied and the piston ring/cylinder liner heat transfer model is established based on the correction on the results of CFD flow/heat transfer calculation.The results indicate that compared with thermal resistance model,the simulation result of piston temperature distribution by the corrected heat transfer model proposed is closer to the piston temperature data measured,and the corrected model being normalized can be wider applied to other piston ring/cylinder liner heat transfer calculations.

关 键 词：内燃机 流固耦合 活塞环缸套传热模型 动力润滑 

分 类 号：U464[机械工程—车辆工程]