商用车发动机舱热管理一维/三维联合仿真与试验

摘要/Abstract

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。

关键词: 发动机舱, 热管理, 一维和三维联合仿真, 热回流, 试验

Abstract:

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 dissipation 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 accordance 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 temperature 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.

Key words: engine compartment;thermal management;1D/3D , co-simulation;thermal , reflow;test

中图分类号:

U461

郭健忠, 罗仁宏, 王之丰, 胡溧, 吴勇. 商用车发动机舱热管理一维/三维联合仿真与试验[J]. 中国机械工程, 2016, 27(04): 526-530.

Guo Jianzhong, Luo Renhong, Wang Zhifeng, Hu Li, Wu Yong. Test and 1D/3D Co-simulation of Thermal Management for a Commercial Vehicle Engine Compartment[J]. China Mechanical Engineering, 2016, 27(04): 526-530.

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