闭式内冷油腔体积对活塞冷却的影响

郝冠男; 邓立君; 刘瑞

doi:10.3969/j.issn.1001-2222.2018.05.013

车用发动机 ›› 2018, Vol. 0 ›› Issue (5) : 71-76. DOI: 10.3969/j.issn.1001-2222.2018.05.013

栏目

闭式内冷油腔体积对活塞冷却的影响

郝冠男¹，邓立君²，刘瑞³

作者信息 +

Effect of Closed Internal Cooling Oil Gallery Volume on Piston Cooling

HAO Guannan¹,DENG Lijun²,LIU Rui³

Author information +

文章历史 +

摘要

采用动网格技术和SST -κ-ω两相湍流模型，对内冷油腔的传热进行了数值计算，分析了不同体积内冷油腔机油的面积覆盖率和对流传热系数的变化规律。提取内冷油腔壁面的传热系数，对活塞温度场进行有限元模拟计算。结果表明，随着内冷油腔体积的增大，面积覆盖率和传热系数随之增大；内冷油腔体积对内冷油腔的温度有一定影响，而对活塞表面温度影响不大；在结构允许的范围内，内冷油腔的体积应尽可能大。

Abstract

Based on the dynamic grid technique and the SST κω twophase turbulence model, the heat transfer of internal oil cooling gallery was numerically calculated, and the variation rules of area coverage rate and convective heat transfer coefficient for different volumes of oil cooling gallery were analyzed. The heat transfer coefficient for inner wall of cooling gallery was extracted and the finite element simulation of piston temperature field was carried out. The results show that the area coverage rate and heat transfer coefficient increase with the volume increase of internal cooling gallery. The volume of cooling gallery has certain influence on the temperature of internal cooling gallery and has little effect on the temperature of piston surface. In addition, the volume of cooling gallery should be designed as large as possible if the structure is permissible.

导出引用

郝冠男，邓立君，刘瑞. 闭式内冷油腔体积对活塞冷却的影响[J]. 车用发动机. 2018, 0(5): 71-76 https://doi.org/10.3969/j.issn.1001-2222.2018.05.013

HAO Guannan,DENG Lijun,LIU Rui. Effect of Closed Internal Cooling Oil Gallery Volume on Piston Cooling[J]. Vehicle Engine. 2018, 0(5): 71-76 https://doi.org/10.3969/j.issn.1001-2222.2018.05.013