Advanced Direct Injection Combustion Technology

Most of the researchers wanted to work with diesel engine because of complexity in the gasoline engine. Author tried to review gasoline direct injection (GDI) a new technology in the gasoline engine with the objective to motivate the researchers to work with this field. This paper reviews the benefits of direct injection in the gasoline engine in terms of fuel consumption and emission. The effect of stratified and homogeneous mode on the performance parameter along with combustion system (wall guided/ spray guided and air guided), its extend feasibility and complexity in the individual and combine mode of operation is reviewed in detail. The review comes up with the need of optimization in mixture formation to reduce in-cylinder wall wetting, increase combustion stability, and extend up to which charge cooling occurs and feasibility of stratified mode operation in GDI engine. Optical diagnostic and CFD are the tools which can help in optimizing this complex system.