가솔린 엔진의 웜업 기간 단축을 위한 기초 연구

Abstract

Recently, there has been an interest in intelligent cooling system as it has the potential of achieving a better fuel economy and emission reduction. It is possible mainly due to the higher coolant temperature during engine warm-up and low speed/part-load conditions. Thus the purpose of our study was to investigate the relationship between engine coolant temperature and fuel consumption. A coolant flow test rig was set for acquisition of coolant flow rate and pressure distribution. These results were used for experimental data to validate the 1-D CFD codes, Flowmaster2 & WAVE. The coolant circuit model was well matched by 2% or less error. Therefore, the engine cooling system was able to simulate by using the model. From this study , we found that the coolant flow distribution has close relationship with coolant temperature on the engine warm-up, and this results can be used for engine cooling system simulation model.