Abstract
Because of trade-off relationship between fuel economy and exhaust temperature, the optimization of engine system parameters should be considered not only engine-out emissions but also catalytic conversion efficiency. Therefore, "Total Engine Simulation System (TESS)" with diesel spray combustion model based zero-dimensional phenomenological mode was developed to predict torque and exhaust emissions of diesel engine system equipped aftertreatment devices under JE-05 mode. TESS is useful for the development process both engine and aftertreatment device in the early stages. Moreover, TESS becomes useful for the development of engine control strategy: hence, TESS helps accelerate the engine calibration process. The purpose of this paper is to describe an outline of TESS and the investigation of low emission and fuel consumption diesel engine system by using TESS as an example.
