The Research And Development On Thermal Management Of A Vehicle Engine Compartment

It is an important work that to develop and design a engine cooling system. The work contains the selection of every component, the space layout and performance matching of all components. Cooling system with good performance should mainly ensure suitable temperature of oil and engine inlet and outlet water, efficient combustion of gasoline, and normally working of lubrication system. In addition, it should guarantee the good matching performance of cooling system, air conditioning system, and other cooling module.In this paper, one-dimensional simulation, 3D simulation and thermal balance experiment were used to provide guidance for the development of cooling system of a vehicle engine and the research of the cabin thermal management technology. The one-dimensional simulation provides guidance for the selection, arrangement of the cooling component, evaluates the performance of the cooling system, and verifies 3D simulation optimization scheme for reducing the engine inlet and outlet water temperature. Three-dimensional simulation analyses the flow of air and temperature distribution of the entire engine compartment, verifies the optimization of flow field solution and scheme of reducing heat harm, and provides the data of velocity and flow of air for one-dimensional simulation. Thermal equilibrium experiment provide a way which verifies the design of cooling system. Comparing the results of experiment with simulation, we can confirm the accuracy and reliability of simulation results. In addition, the data that gained from thermal balance experiment can be the basis of three-dimensional calculation. Thermal equilibrium experiment has Confirmed that the performance of cooling system of the vehicle satisfying the requirements of design.