A Study On 5 % And 10 % Bio-Blended Diesel Fuel Spray Deposition

Kelvin, Theng Sern Lung (2012) A Study On 5 % And 10 % Bio-Blended Diesel Fuel Spray Deposition. Project Report. UTeM, Melaka, Malaysia. (Submitted)

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Abstract

Deposit formation inside a combustion chamber is a phenomenon that contributes to various engine problems such as increase in emission, engine performance reduction as well as engine damage. Due to higher viscosity, density and distillation temperature compared to diesel fuel, utilization of bio-diesel fuel increase the tendencies of deposit formation. The aim of this study is to investigate the deposit formation for 5 % and 10 % Bio-Blended Diesel Fuel (B5 and B10) using Fuel Spray Deposition Test (FSDT) apparatus. The deposit formation on hot surface depends on spray interval, fuel types, wall surface temperature, chemical reaction effect, heat transfer effect and cooling effect. Existing FSDT apparatus had been improved and experiment had been conducted successfully for surface temperature of 300 °C. In this study, it was found that deposition mass of both tested fuels was increased. Deposition mass of B10 was found to be higher than B5, due to higher value of density and viscosity. Deposit formation rate for both fuels was decreasing as a function of time. However, B10 have higher deposit formation rate as compared to B5 over time. Fuel deposit pattern onto the hot surface for both fuels differs to each others, due to the atomization ability of the fuels. Hence, the utilization of lower blends percentage of bio-diesel fuels had greater potential in reducing deposit formation on a combustion chamber wall in an engine

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