Quasi-Dimensional modeling of a CNG fueled HCCI engine combustion using detailed chemical kinetic

Abstract

In this study, an in-house quasi dimensional code has been developed which simulatesthe intake, compression, combustion, expansion and exhaust strokes of a homogeneous charge compression ignition (HCCI) engine. The compressed natural gas (CNG) has been used as fuel. A detailed chemical kinetic scheme constituting of 310 and 1701 elementary equationsdeveloped by Bakhshan et al. has been applied for combustion modeling and heat release calculations. The zero-dimensional k-ε turbulence model has been used for calculation of heat transfer. The output results are the performance and pollutants emission and combustion characteristics in HCCI engines. Parametric studies have been conducted to discussingthe effects of various parameters on performance and pollutants emission of these engines.