in this paper, the performance of a natural gas hcci engine is studied through a thermodynamic model including detailed chemical kinetics. it is shown that as hydroxyl radical has important effects on natural gas combustion, it is possible to quantify soc with hydroxyl concentration variations. meanwhile the influence of using formaldehyde as an additive on the engine characteristics has been i...

Investigation of exhaust emissions and ammonia flow behavior in the system incorporating with Selective Catalytic Reduction (SCR) unit is discussed. An aftertreatment designed to work without additional urea injection improve feasible temperature operating reduce size. This study focused on obtaining optimal parameters for catalysis using gaseus as reducing agent. Its effectiveness considered a...