Engine cylinder fluid characteristics of diesel engine converted to CNG engine

This research has investigated the fluid characteristic effect in the engine cylinder of four-stroke direct injection diesel engine converted to port injection dedicated compressed natural gas (CNG) engine spark ignition. This research has using computational engine model for steady-state and transient simulation. The investigation and simulation of the engine cylinder flow performance characteristic profile based on engine computational model. The engine computational model has developed based from the diesel engine converted to port injection dedicated compressed natural gas (CNG) engine spark ignition. The simulation of engine model has simulated in variations engine speeds. The simulation results of fluid characteristics are shown the characteristics of in cylinder volumetric efficiency profile, percent burned mass, fuel/air ratio, fuel flow profile, total fuel consumption and total fuel energy entering to cylinder in variations engine speeds.