基于AMEsim的增程式动力系统冷却装置仿真研究

陈涛^1，2，唐琦军^1，2*，谢欣言^1，2，陈思沅¹，张大庆¹

1.湖南农业大学机电工程学院，湖南 长沙  410128；2.湖南大学重庆研究院，重庆  401135

摘要：为控制增程式动力系统的发动机进气、机体、发电机及控制器的温度，应用AMEsim软件建立增程式动力系统及其冷却装置的一维仿真模型，仿真分析最大功率工况和最大转矩工况下各冷却回路（柴油机、中冷器、发电机及其控制器）的性能，以及散热器迎风面积、芯体厚度、翅片间距对冷却系统性能的影响；对温度过高的发动机和中冷散热器进行优化，保持发动机和中冷器迎风面积不变，散热器芯体厚度分别增加到52 mm和48 mm，翅片间距均为2.4 mm。仿真结果表明：增大散热器迎风面积、芯体厚度、减小翅片间距都能提高冷却性能，其中增大迎风面积效果最显著，其次是减小翅片间距和增大散热器芯体厚度；优化后发动机和中冷器进、出水温度符合要求，最大功率工况下，发动机和中冷器出水温度分别比优化前降低11.0、8.8 ℃，有效保障了增程式动力系统的稳定运行。

关键词：AMEsim；冷却系统；混合动力；仿真分析

Simulation of range-extended powertrain cooling system based on AMEsim

CHEN Tao^1,2, TANG Qijun^1,2*, XIE Xinyan^1,2, CHEN Siyuan¹, ZHANG Daqing¹

1.College of Mechanical and Electrical Engineering, Hunan Agricultural University, Changsha 410128, China;

2. Research Institute of HNU in Chongqing, Chongqing 401135, China

Abstract: In order to control the temperature of the diesel engine intake, engine body, generator and controller of the extended range power system, a one-dimensional simulation model of the extended range power system and its cooling device is established using AMEsim software. The working performance of each circuit of the cooling system (diesel engine, inter-cooler, generator and its controller) under maximum power and maximum torque conditions is analyzed. The influence of three factors: the windward area of the radiator, the thickness of the core, and the spacing between fins on the performance of the cooling system is analyzed. The engine and inter-cooler are improved, keeping the windward area of the engine and inter-cooler unchanged, increasing the core thickness to 52 mm and 48 mm respectively, and keeping the fin spacing at 2.4 mm. The simulation results show that increasing the windward area, core thickness, and reducing the fin spacing of the radiator can improve the performance of the cooling system. Among them, increasing the windward area shows a more significant effect, followed by reducing the fin spacing and thickening the radiator core. The optimization plan ensures that the inlet and outlet water temperatures of the engine and inter-cooler meet the requirements, and the outlet water temperatures of the engine and inter-cooler are reduced by 11.0 ℃ and 8.8 ℃ respectively, which can ensure the stable operation of the extended range power system.

Keywords: AMEsim; cooling system; hybrid; simulation analysis