Phenomenological combustion model for direct injection diesel engine
In the present investigation a new phenomenological model for Quiescent and Swirl Type Direct Injection Diesel Engines has been developed. The model enables prediction of engine cylinder pressure, fuel injection and evaporation rates, air entrainment rate into fuel sprays, heat release rate, heat transfer and mean cylinder gas temperatures and exhaust smoke level. A soot model is proposed based on chemical kinetics and a turbulent mixing rate concept. The model predictions are verified with several experimental data. The predictions are made over a range of engine speed, load, injection timing, boost pressure and intake swirl level. Comparison with available engine experiments is in general good.