Methodology for Thermal Analysis of Multi-system in Engine Underhood

The thermal control of automotive power supply system and air conditioning system is one of core problems of vehicle thermal management. for the traditional internal combustion engines, the multi-system thermodynamic processes in engine underhood deal with water jacket cooling, air conditioning, supercharger intercooler, oil cooling, etc. This paper sums up the technology development and progress on the vehicle thermal management, discusses the current status of the underhood thermal flow and heat transfer analysis and further indicates numerical model establishment, simulation analysis and calculation method, including one dimensional(1D) analysis, three dimensional (3D) analysis and lumped parameter analysis. By analyzing the basic model of computational fluid dynamics(CFD) platform, these works will provide support and help for promoting the progress of vehicle thermal management analysis.