Author : J.Vamshidhar, P.Vijayanand and G.Nithin

In the present work, computational fluid dynamics investigation on in-cylinder flow for non-reacting as well as firing condition in a DI diesel engine with different types of combustion chamber geometries has been carried out. The multi-dimensional CFD code STAR-CD is used for the simulation of air motion inside the cylinder and combustion process in a DI diesel engine. The investigation has been carried out to study the effect of combustion chamber geometries and engine speed on in-cylinder air motion under non-reacting conditions and the effect of injection timing, injection rate shaping on combustion and emission process. Based on the combustion simulation studies carried out in this investigation best possible performance and emission characteristics from a DI Diesel engine are predicted.

Keywords: Combustion Geometry, Injection Timing.

Article published in International Journal of Current Engineering and Technology, Vol.5, No.5 (Oct-2015)