Study on the prediction of performance and emission of a 4-cylinder 4-stroke cycle spark ignition engine(Second Paper)

4기통 4사이클 터보과급 가솔린 기관의 성능 및 배리조성 예측에 관한 연구(제2보)

The development of the effective computer simulation program which predicts the performances and emissions of the multi-cylinder turbocharged gasoline engine has been described in the first paper. In this paper, the comparison between the predictions and experiments of the transient pressure at each point in the intake and exhaust systems was made to examine the validity and availability of the simulation models adopted. This test was performed for the engines equipped with different turbochargers under various operating conditions. The results of calculation showed good agreements with the experimental data and proved that the simulation program developed can be used for the matching of the turbocharger to the engine.