Thermal analysis of cooling module based on engine test of thermal balance

Abstract

Vehicle thermal analysis plays an important role of the overall vehicle development process. To determine energy distribution transformed from the heat released by combustion and build up the model to simulate heat transfer process of the cooling module, the engine bench was put forward to make thermal balance test and the drag test under vehicle target working conditions. It was found through the experiment data that the heat absorbed by the cooling system changed by the coolant temperature of the inlet. As a result, the correction map was established for the control system of cooling module that can be changed by the engine rotation speed, output torque and power value. A 1D -3D simulation model was built up by experiment data and coupling computing method. Based on the simulation model of cooling module that was verified by the thermal balance experiment data, the research and analysis were carried out on the performance of cooling module under the conditions of different environmental temperature and working state of air-conditioning system. The conclusion of interaction effects was made, which have important engineering value for the development of intelligent cooling module control system.