Flow Investigation on Different Combustion Chamber Configuration in a DI Diesel Engine – A CFD Approach
The main objective of the present investigation is to make a computational study of flow structure inside the engine cylinder in a DI diesel engine during the end of compression stroke at an engine speed of 1000 rev/min. The analysis has been carried out for four different piston configurations viz., flat piston, centre bowl on flat piston, inclined and inclined offset bowl piston. A polyhedral trimmed cell has been adopted for meshing the geometries using the code called STAR-CD Es-ice. The flow has been simulated by solving the governing equations of conservation of mass, momentum and energy using the SIMPLE algorithm. From this numerical prediction, the best possible combustion chamber configuration and the location of fuel injector on the cylinder head have been arrived.
In this paper,the key point of drawing die process?of wide flange drawing workpiece is exhaustively discussed,the plan of designing an optimized drawing die process is given and the development of the drawing die CAD system is discussed.After inputting the interrelated parameter,the designing and 3D drawing of drawing dies could be given by the CAD system,which could improve observably the quality and efficiency of the die design.