商用车发动机舱热管理一维/三维联合仿真与试验  

Test and 1D/3D Co-simulation of Thermal Management for a Commercial Vehicle Engine Compartment

作　　者：郭健忠[1] 罗仁宏[1] 王之丰 胡溧[1] 吴勇[1] 

机构地区：[1]武汉科技大学,武汉430081 [2]浙江吉利汽车研究院有限公司,宁波315336

出　　处：《中国机械工程》2016年第4期526-530,共5页China Mechanical Engineering

基　　金：国家自然科学基金资助项目(51105283)

摘　　要：为解决某商用车在额定工况下发动机出水温度偏高的问题,分别利用三维、一维和一维/三维联合仿真工具,对样车的发动机舱流场特性以及冷却系统性能进行了研究。通过一维/三维联合仿真结果与台架试验测试数据的对比分析,验证了一维/三维联合仿真模型的可靠性;同时针对发动机舱出现的热回流现象,提出了相应的改进措施并进行道路测试,测试结果显示:改进后,发动机出水温度下降3.7℃,验证了改进方案的有效性。通过一维/三维联合仿真可以提高发动机舱热管理的分析效率,缩短开发周期。In order to solve the problems of engine outlet water high temperature at rated power conditions. 3D, 1D and 1D/3D co-simulation tools were used to analyze the characteristics of heat dissi- pation in the engine compartment and the performance of cooling system respectively. Comparing the results of 1D/3D co-simulation and bench test,the results show the simulation results are in good ac- cordance with test data,so the simulated model is reliable. At the same time,appropriate measures for improvement to avoid the thermal reflow phenomenon in a commercial vehicle engine compartment were proposed, then the road test was carried out. It shows that the measured outlet coolant tempera- ture of engine reduces by 3.7 ℃, the effectiveness of the improved program is verified. By the 1D/3D co-simulation, the analysis efficiency of the underhood thermal manage can be improved greatly, the development cycle will be reduced.

关 键 词：发动机舱 热管理 一维和三维联合仿真 热回流 试验 

分 类 号：U461[机械工程—车辆工程]