Optimization study of vehicle thermal management based on vibration heat dissipation

Abstract

Although vibration is a vital means for ameliorating heat dissipation, it is rarely used in the research and development of vehicle thermal management. This research investigated the problem of the engine outlet water temperature of a vehicle exceeding the temperature limit. The effects of vibration on the fin-tube radiator heat dissipation were examined, and a systematic optimization analysis method for vehicle thermal management based on vibration enhanced heat dissipation technology was proposed. First, experiments on the vibration and heat dissipation characteristics of the radiator were conducted, and the principle of the vibration on the performance of the radiator was obtained. Second, the obtained experimental results were adopted, and an integrated calculation model for the target vehicle was developed to facilitate calculations of the engine outlet water temperature under different vibration conditions. Third, the optimization of the thermal management, based on the calculation model, radial basis function neural network and particle swarm optimization algorithm, was conducted to obtain the minimum value of engine outlet water temperature and the corresponding vibration parameters. Finally, validation of a vehicle’s environmental chamber experiment was implemented. This study provides a solution for the applications of vibration-enhanced heat dissipation technology in vehicle design.