高强化柴油机缸盖传热特性分析与改进设计  

Heat Transfer Characteristics Analysis and Improvement of Cylinder Head in Highly-strengthened Diesel Engine

作　　者：景国玺[1] 张儒华[1] 郭昌明[1] 王艳丽[1] 李鹏[1] 崔随现 刘继林 

机构地区：[1]中国北方发动机研究所(天津),天津300400 [2]装甲兵驻616军事代表室,山西大同037036

出　　处：《车用发动机》2014年第2期1-5,10,共6页Vehicle Engine

摘　　要：基于平板传热理论建立了缸盖火力板传热预测模型,能够快速预测火力板的温度并获取缸盖火力面的传热规律,为缸盖结构设计和热负荷控制提供参考。进行了缸盖温度场试验测试,并利用试验数据对有限元模型进行了标定。仿真结果表明,所分析缸盖材料热导率严重偏低,火力面钻孔位置偏高,通过材料热导率提升和结构优化设计可有效降低缸盖热负荷。A heat transfer prediction model of cylinder head deck was built based on the plate heat transfer theory.With the model,the deck temperature and heat transfer characteristics could be acquired which provided the important reference for cylinder head design and thermal load control.Moreover,the head temperature field test was carried out and the finite element model was optimized by test data.The simulation result shows that the conductivity property of the cylinder head material is seriously low and the position of the drilling holes near the deck is very high.Through improving the material conductivity and optimizing the structure design,the thermal load of cylinder head can be reduced effectively.

关 键 词：柴油机 气缸盖 热负荷 有限元法 热导率 

分 类 号：TK423.2[动力工程及工程热物理—动力机械及工程]