Abstract
A combustion process in an HCCI engine has been simulated using CFD code in conjunction with a 5-step global reaction model for hydrocarbon fuels. The Large Eddy Simulation (LES) was employed to describe turbulent transport. The calculations were performed for homogeneous and heterogeneous mixtures of EGR gas and fuel-air mixture. From the calculation results of combustion process, it is found that the heat release rate for the heterogeneous case is more moderate than that for the homogeneous case.
