Effect of Injection Pressures on Emissions of Direct Injection Diesel Engine By Using CFD Simulation

Abstract

techniques like EGR, changing the injection pressure of fuel into the combustion chamber etc., It is a well known fact that as the injection pressure of fuel increases, the mass flow rate of fuel will vary for proper mixing of fuel and air in the combustion chamber. In the present work, it is proposed to investigate the effect of variations in injection pressure on emissions and for this STAR-CD will be used as a tool. To aid the setup of these calculations, visualization and interpretation of results, CD -Adapco has developed a pre and postprocessor environment, es-ice which is a special tool in STAR-CD solver which will be used for this analysis.The performance and emission characteristics were presented graphically and concluded that they were found better at the fuel injection pressure 200 bar for the light duty engine.

Experimental Investigations and Numerical Modelling of Compression Ignition Engine Fuelled With Diesel and Biodiesel Blend

“…However, the cost involved in measuring devices and experimental set up is high and consumes more time to study detailed emission As a result, it was found that the blend B20 of apricot oil exhibits encouraging effects on emission and performance compared to other blends. C. Anuradha et al [2015] used STAR-CD CFD package to simulate CI engine in order to understand the effect of fuel injection pressure, they found that in-cylinder pressure, temperature and heat release rate were increased with increasing injection pressure. 20% of biodiesel in diesel-biodiesel mixture was found to be ideal for the CI engine as suggested by most of the researchers, which is recommended in terms of physicochemical properties closer to diesel fuel.…”