VGT와 EGR이 장착된 디젤엔진의 공기순환계 모델에 관한 연구

다국어 초록 (Multilingual Abstract)

The recent Diesel engine is to install VGT(variable geometry turbocharger) to increase the engine displacement per the power, to reduce the CO2 generation by increasing the BSFC and to minimize the turbo-reg at low speed-load points. And the EGR system is installing for reducing the NOx generation. The VGT and EGR were operated complexly in the engine intake and the exhaust system. Therefore, this study focuses to modify VGT dimensionless model using the flow, efficiency and power parameters which are temperature, pressure and mass flow. and this models were developed to predict the intake and the exhaust state in engine.
In case of the Combination with the model which are turbocharger model, intercooler model, exhaust gas model, it is possible to predict intake and exhaust state which are boost temperature, pressure ratio, after intercooler gas temperature, before the turbine pressure and the turbine vane duty using just mass air flow rate within reasonable errors. And in case of introduce the another additional independent parameter, it is possible to increase the prediction accuracy.

목차 (Table of Contents)

• Abstract
• 1. 서론
• 2. 실험장치 및 방법
• 3. 모델 구성 및 검증
• 4. 공기순환계 모델 검증
• 5. 결론
• 후기
• References