Arash Mohammadi - K. N. Toosi University of Technology
Masoud zibasharhagh - K. N. Toosi University of Technology
Ali Jazayeri - K. N. Toosi University of Technology

Future clean internal combustion (IC) engines should have had minimum emission level under possible lowest fuel consumption permitted in a wide range of speed, loads. These parameters strongly depend on mixture formation and combustion process which are difficult to be controlled in a conventional engine. This may be achieved by realization of homogeneous combustion process in engine. This paper deal with the simulation of direct injection IC engine equipped with a chemically inert PM. With cylindrical geometry homogenize and stabilize the combustion of engine. A ۳D numerical model for PM engine is presented in this study based on a modified version of the KIVA-۳V code. Methane as a fuel is injected directly inside hot PM that is assumed mounted in cylinder head. Lean mixture is formed and volumetric combustion occurs in PM. Mixture formation, pressure, temperature distribution in both phases of PM and in-cylinder fluid with the production of pollutants CO and NO, effect of injection time in the closed part of the cycle is studied.

compression engine- Homogeneous combustion - Porous media