Influence of Underhood Flow on Engine Cooling Using 1-D And 3-D Approach

Abstract

This work deals with numerical simulation of complete cooling system of internal combustion engine (GT-SUITE), which also involves the simulation of flow in underhood using the computationally undemanding simulation. A detailed model of the internal combustion engine is extended to a cooling circuit model which is then coupled to a simplified underhood model which is created with the help of GT-COOL application as a 3-D model and afterwards transferred to a 1-D form. The approaches, one using 1-D solution of arrangement of the heat exchangers and the other 3-D approach using the underhood model, were investigated in two steady states corresponding to various vehicle speeds and engine load. These simulations have shown the inappropriateness of 1-D approach when solving the flow in the heat exchangers in the underhood and helped to explore a relatively undemanding method of flow simulation in the underhood, which enables to detect the interaction between the models of the cooling system and the internal combustion engine and the issue of arrangement of the heat exchangers in the underhood.

Keywords

• Proudění V Motorovém Prostoru
• Chlazení Spalovacích Motorů
• Chladič
• Klimatizace
• 1-D Simulace
• Underhood Flow
• Engine Cooling
• Radiator
• Air Condition
• 1-D Simulation