论文部分内容阅读
研究冷却油腔截面积大小对活塞温度场分布的影响,基于CATIA和ANSYS软件,通过建立4个油腔截面大小不同的活塞模型进行有限元分析。结果表明,使用合适大小的油腔起到很好的冷却效果,温度最大值下降34℃;而采用过大面积的油腔反而起到隔热作用,温度最大值和火力岸温度都明显升高。针对实验中的活塞,最佳截面大小为232 mm2,改善原机中的不足之处,同时为大功率发动机活塞的设计提供参考。
The influence of the cross-sectional area of cooling oil cavity on the temperature field distribution of the piston was studied. Based on CATIA and ANSYS software, four piston models with different cross sections of oil chamber were established for finite element analysis. The results show that the use of a suitable size of the oil chamber to play a very good cooling effect, the maximum temperature decreased by 34 ℃; but the use of large oil chamber but rather play an insulating role, the maximum temperature and shore temperature were significantly increased . For the experimental piston, the best section size is 232 mm2, which can improve the deficiencies in the original machine and provide a reference for the design of high power engine pistons.