Modelling and Experimental Study About the Effect of Exhaust Gas Recirculation on Diesel Engine Combustion and Emissions

An experimental study has been made on a small size single cylinder supercharged DI Diesel engine, with adequate equipment for its measurement, control, and diagnostics, in order to analyse the effect of exhaust gas recirculation on engine emissions, at partial loads. Along-side this work, an existing combustion model, of phenomenological type, has been adapted to consider the effect of the presence of burnt products among the reactives of the chemical reaction. The joint analysis of the experimental/modelled results is useful for understanding the combustion mechanisms under these conditions.