Numerical Modeling and Simulation of the Vehicle Cooling System for a Heavy Duty Series Hybrid Electric Vehicle
Numerical Modeling and Simulation of the Vehicle Cooling System for a Heavy Duty Series Hybrid Electric Vehicle
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DOI：
10.4271/2008-01-2421
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发表时间：
2008-10
期刊：
影响因子：
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通讯作者：
Sungjin Park;D. Jung
中科院分区：
文献类型：
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作者：
Sungjin Park;D. Jung
串联混合动力汽车（hev）的冷却系统由于额外的部件和不同部件的不同冷却要求而比传统汽车更为复杂。在这项研究中，建立了一个用于SHEV冷却系统的数值模型来研究冷却系统的热响应和功率消耗。该模型是为虚拟重型履带式SHEV创建的。车辆的动力总成系统也采用了先前由密歇根大学汽车研究中心开发的车辆发动机仿真（VESIM）模型。采用VESIM软件对三种恶劣工况和真实工况下的动力总成系统进行了仿真。VESIM的输出数据被输入到冷却系统仿真中，以提供动力总成部件的工作状态。冷却系统模型包括冷却液、冷却空气和发动机油三个主要流体回路的各种组件模型。该模型预测了所有冷却系统部件的热响应以及发动机和电气部件的温度。利用所建立的冷却系统模型，估算了实际驾驶工况下冷却系统的热响应和功耗，并确定了影响冷却系统性能和功耗的因素。
The cooling system of Series Hybrid Electric Vehicles (SHEVs) is more complicated than that of conventional vehicles due to additional components and various cooling requirements of different components. In this study, a numerical model of the cooling system for a SHEV is developed to investigate the thermal responses and power consumptions of the cooling system. The model is created for a virtual heavy duty tracked SHEV. The powertrain system of the vehicle is also modeled with Vehicle-Engine SIMulation (VESIM) previously developed by the Automotive Research Center at the University of Michigan. VESIM is used for the simulation of powertrain system behaviors under three severe driving conditions and during a realistic driving cycle. The output data from VESIM are fed into the cooling system simulation to provide the operating conditions of powertrain components. The cooling system model includes various component models for three main fluid circuits of coolant, cooling air, and engine oil. The model predicts the thermal responses of all cooling system components and the temperatures of the engine and electric components. Using the cooling system models, the thermal response and power consumption of the cooling system over a realistic driving cycle is estimated and the factors that affect the performance and the power consumption of the cooling system are identified.