Development of the Calibration Method for the Boost Pressure and EGR Rate of a WGT Diesel Engine Using Mean Value Model

Globally, many researchers have been trying to improve the fuel economy of a vehicle for satisfying future CO 2 regulation and minimizing air pollution problem. For the same background, diesel engine and vehicle system optimization using simulation models have been key technologies for the improvement of vehicle system efficiency. Therefore, in this study, calibration method for the air breathing system of a WGT diesel engine using mean value model has been composed for efficient engine and vehicle optimization simulation researches. And virtual WGT performances have been calculated for a 2 cylinder downsized diesel engine system. From these researches, the calibration method for the boost pressure and EGR rate of a virtual diesel engine related with WGT performances could be composed and some of technical issue related with downsized diesel engine could be investigated. Key words :WGT(웨이스트게이트형 터보과급기), Diesel engine( 디젤엔진), Engine calibration( 엔진보정), Mean value model(평균값모델), EGR(배기가스재순환)