重型柴油机气缸套热负荷分析及结构优化  

Thermal Load Analysis and Structural Parameters Optimization of Cylinder Liner of Heavy-Duty Diesel Engine

作　　者：尤国栋[1] 苏铁熊[1] 李坤[1] 

机构地区：[1]中北大学机电工程学院,山西太原030051

出　　处：《柴油机》2010年第3期29-31,共3页Diesel Engine

摘　　要：以某重型柴油机的钢制薄壁顶置湿式气缸套为研究对象,运用有限元法进行了气缸套三维温度场的计算,结果显示:缸套最高温度为229℃,出现在缸套活塞上止点附近;结合特定热边界条件,对气缸套的稳态温度场进行了计算,通过对比不同气缸套壁厚对热负荷的影响,明确了在气缸套的变形分析中考虑热负荷的必要性;为气缸套结构设计改进提供了理论指导和依据。Based on the thin wall wet cylinder liner of a heavy-duty diesel engine,calculations are carried out on the three-dimensional temperature field by finite element method（FEM）.The results show that the highest temperature of the cylinder liner is 229℃ in the top dead center.Combined with the special thermal boundary condition,the steady-state temperature field of the cylinder liner are calculated and the effect of different cylinder thickness on the thermal load are compared.The importance of involving the thermal load in the analysis cylinder deformation are underlined.All these provids theoretical directions and foundation for cylinder liner design.

关 键 词：重型柴油机 气缸套 温度场 热负荷 

分 类 号：TK423.2[动力工程及工程热物理—动力机械及工程]