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Residual Gas Model for On-Line Estimation for Inlet and Exhaust Continuous VVT Engine Configuration
Published April 19, 2004 by University of Salerno in Italy
In this paper a well-known Residual Gas estimation model is evaluated on real data and extended to an engine configuration that involves an external Exhaust Gas Recirculation (EGR) circuit and a Variable Valve Timing (VVT) system. The model proposed by M. Mladek and C.H. Onder (Swiss Federal Institute of Technology) has been modified to take into account the presence of these two systems, and has been validated comparing the results to data obtained form a 6 cylinders engine. The main goal of this work is to validate and extend to external EGR input the given model, with the aim of designing VVT model- based control strategies for combustion and pollution emission optimal performances.