Abstract
Combustion characteristics of a fuel defines its performance and emission characteristics. Enhancement of combustion characteristics is feasible by improvisation of fuel properties. Fuel additives were used for varying fuel properties. The evolution of ‘nano-concept’ develops countless applications in the existing technologies. In this experiment silicon nanoparticles were synthesized by ball milling micron sized silicon particles for 45 hours. The elemental and structural characterizations for the additive material were carried out by EDS, SEM and TEM analysis. Silicon nano additive was mixed in three different weight proportions with diesel to prepare the test fuels. The fuel properties variation with the addition of nano additive were studied. Engine testing was carried out at constant 1200 rpm speed and varying load conditions. Diesel fuel added with 0.5 wt% Si nanoadditive (Si 0.5) showed maximum load carrying ability among the different test fuels. In comparison with diesel at 1200 rpm and 100% load condition, an increase in torque of 5.91% was observed and BTE was increased by 8.93% with a decrease in NOx emission by 27.3%. Variation in the performance and emission characteristics of the fuels were the results of change in heat release rate and combustion timing with the addition of nano additives which could be studied from the combustion characteristic curves.
Highlights
The rapid development in technology increases the energy requirement which leads to the development of new energy sources as well to find an efficient way of using them
The prepared nano-fuels were tested in a twin cylinder diesel engine to study the effect of nanoparticle in the combustion, performance and emission of the base fuel
The combustion, performance and emission of a fuel loaded with Si nanoadditive was tested in a twin cylinder diesel engine
Summary
The rapid development in technology increases the energy requirement which leads to the development of new energy sources as well to find an efficient way of using them. The slurry fuels doesn’t form a stable solution, since the micron sized metal particles settle down by gravity. This causes incomplete combustion and increased particulate emission. Previous studies have demonstrated significant improvements using such nano-fuels including higher energy release, increased ignition probability, improved burning rates, enhanced catalytic effects and shortened ignition delay [5, 7 & 8]. Based on these developments, research in the relatively new area of nano-fuels has. The prepared nano-fuels were tested in a twin cylinder diesel engine to study the effect of nanoparticle in the combustion, performance and emission of the base fuel
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