Combined effects of combustion chamber geometry and injection strategy on combustion and emissions of a diesel engine

For a certain type of direct injection diesel engine, three-dimensional model single-cylinder complete combustion chamber and in-take/exhaust port was established. Three-dimensional Computational Fluid Dynamics (CFD) analysis software CONVERGE used for simulation. The effects fuel strategy geometry on emissions engine were studied while the volume, compression ratio, total quantity duration kept unchanged. results show that multiple reasonable shape can effectively increase turbulent kinetic energy in cylinder, improve uniformity oil-gas mixing, reduce emission pollutants, quality after further NOx soot.