Analysis of Automotive Thermal Management System Using One-Dimensional Simulation

Abstract

This article takes the cooling system of a certain vehicle as the model and applies simulation tools to establish its cooling system and front cabin air side model. It inputs boundary conditions such as the flow resistance characteristics of each component. Then, it completes the steady-state simulation calculation of the vehicle system under different working conditions and optimizes the design of the original cooling system model. Calculating through simulation, we obtain the flow rate, pressure distribution, and temperature rise of the system and various components. We predict and evaluate the working capacity of the cooling system and propose improvement suggestions based on the calculation and analysis results. This plays an important guiding role in the structural design and testing of the cooling system, greatly reducing research and development time and reducing research and development costs. The calculation results show that the flow rate of each component in the rated point, heating test condition, and idle condition of the original plan has decreased compared to a certain model on the same platform under the same working condition. The temperature difference between the radiator and the flow rate of the oil cooler does not meet the specification requirements. It is recommended to continue optimizing the design.