CFD Analysis of Combustion Characteristics of CI Engine Run on Biodiesel Under Various Compression Ratio

EasyChair Preprint 5182

Abstract

The present numerical study examines the combustion characteristics (CCs) of four stroke Kirloskar CI engine fueled with 20% chicken fat biodiesel by volume blended to diesel fuel (CB20) for three different compression ratios (CRs) of 14, 16.5 and 18. Experimental work is carried out for engine CCs measurements with CB20 fuel, such as peak pressure inside the cylinder, volume consumed during compression stroke and retained in expansion stage with piston movement for each CRs. Numerical investigation is used to predict the behavior of pressure, volume, heat release rate (HRR) and temperature during piston movement inside the combustion chamber at different stages of crank angles using ANSYS IC Engine model as a simulation tool. The percentage variation of peak pressure was 7.24, 6.83 and 14.7 bar from simulation is observed for CR 14, 16.5 and 18 respectively as compared to experimental values. Also, the volume profile and temperature inside the cylinder for different CRs indicates that CB20 fuel can be used within the CI engine with no modification to the engine.

Keyphrases: CFD, CI engine, Chicken fat biodiesel, Compression ratio., combustion characteristics

@booklet{EasyChair:5182,
  author    = {Jaikumar Methre and Sharanappa Godiganur and S Rajeesh},
  title     = {CFD Analysis of Combustion Characteristics of CI Engine Run on Biodiesel Under Various Compression Ratio},
  howpublished = {EasyChair Preprint 5182},
  year      = {EasyChair, 2021}}