Analysis of Mixture Parameters in a Diesel Engine Combustion Chamber

Conference: Advances in Robotics, Mechanical Engineering and Communication
Author(s): Padmalochan Prusty Year: 2018
Grenze ID: 02.ARMEC.2018.7.504 Page: 37-43

Abstract

The fuel-air mixture behaviour in a diesel engine was successively analyzed with\ncomputational fluid dynamics (CFD) software FLUENT 6.3. The CFD analysis was carried\nout for a hemi-spherical type combustion chamber cavity with direct fuel injection of diesel\nfuel and producer gas. The combustion chamber model, with the essential orifices for air\nand diesel fuel inlets, is tested for a single-cylinder diesel engine of 5.2 kW brake output\ncapacity. The meshing of the combustion chamber was carried out using GAMBIT 2.3. The\nstandard k-ε combustion model was used in the analysis. The CFD analysis examines the\nchanges that occur in the temperature, density, mole fractions of carbon monoxide, carbon\ndioxide, nitrogen, methane and hydrogen due to composition of diesel and producer gas.\nThe CFD simulations are validated with experimental data obtained from an inbuilt\nhemispherical shape combustion chamber, and a good agreement between them was\nnoticed. The results show that the modelling has provided a good insight into the flow\ndetails and has paved way in optimization in the geometrical design of combustion chamber\nto get a good diesel-air mixing efficiency, hence the improved engine performance.

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ARMEC - 2018