考虑进气冷却的柴油机活塞温度场分析

赵立普; 王静超; 徐天舒; 张俊红

doi:10.3969/j.issn.1001-2222.2019.02.007

车用发动机 ›› 2019, Vol. 0 ›› Issue (2) : 42-49. DOI: 10.3969/j.issn.1001-2222.2019.02.007

栏目

考虑进气冷却的柴油机活塞温度场分析

赵立普^1，2,王静超³,徐天舒³,张俊红³

作者信息 +

Temperature Field Analysis of Diesel Engine Piston Considering Intake Cooling Effect

ZHAO Lipu^1,2,WANG Jingchao³,XU Tianshu³，ZHANG Junhong³

Author information +

文章历史 +

摘要

考虑进气过程对缸内气体温度和活塞顶面温度分布的影响，通过柴油机缸内燃烧过程仿真获得活塞顶岸对流传热系数、燃气温度曲线以及活塞组热边界条件，进行了柴油机冷起动和标定工况下的活塞温度场分析，利用活塞测温试验对仿真分析结果进行了验证。结果显示，考虑进气冷却影响的活塞温度场计算结果精度较高，与实测特征点温度的相对误差在6%以内，为活塞应力应变分析和结构优化设计提供了准确的边界条件和有意义的参考。

Abstract

Considering the effect of intake process on the incylinder gas temperature and the piston top temperature distribution, the incylinder combustion simulation was carried out to obtain the convective heat transfer coefficient of piston top, the incylinder gas temperature curve and the boundary conditions of piston assembly. The temperature field analysis of diesel engine piston was conducted under cold start and rated speed conditions and the analysis results were verified through the piston temperature test. The results show that the calculation of piston temperature has a higher precision and the error between calculation and measurement is within 6% after taking into account the intake cooling effect. According, the method provides the accurate boundary and meaningful reference for the stressstrain analysis and the structural optimization of piston.

导出引用

赵立普,王静超,徐天舒,张俊红. 考虑进气冷却的柴油机活塞温度场分析[J]. 车用发动机. 2019, 0(2): 42-49 https://doi.org/10.3969/j.issn.1001-2222.2019.02.007

ZHAO Lipu,WANG Jingchao,XU Tianshu,ZHANG Junhong. Temperature Field Analysis of Diesel Engine Piston Considering Intake Cooling Effect[J]. Vehicle Engine. 2019, 0(2): 42-49 https://doi.org/10.3969/j.issn.1001-2222.2019.02.007