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Studies on Effect of Injection pressure on Graphene Nanoparticles added Simarouba Biodiesel Blend Fueled CI Engine Performance and Emission

Paramashivaiah B.M, Rajashekhar C.R

Abstract


Graphene, has highest specific surface area, surface area to volume ratio, thermal conductivity and
chemical reactivity with atoms exposed to reaction from each side has is one of the most widely sought
after materials in the recent days because of its properties. Graphene has found its applications in
each and every field, from medicine to cosmetics, engineering to biomedical sciences. An effort is
made in this work to improve the performance of an engine using it as an additive in biodiesel fuel.
Stable and homogeneous suspension of graphene was a difficult job and was achieved using a
surfactant called sodium dodecyl sulphate. Graphene nanofuels were prepared by dispersing
graphene in simarouba methyl ester blend with diesel at various dosing levels of 20 ppm, 40 ppm and
60 ppm. The dispersion was characterized using the zeta potential measurement technique. The
performance, combustion and the emission characteristics were studied on a single cylinder, 4 stroke
CI engine for three IPs of 180 bar 200 bar and 220 bar. Obsreved an improvement in Break thermal
efficiency, unburnt hydrocarbons, and carbon monoxide emissions, marginal increased NOx emission.
The addition of graphene nano particles has also resulted in a significant reduction in the combustion
duration and a marginal increase in the peak cylinder pressure. Best performance for SME2040
Nanofuel at 200 bar injection pressure injection timing with 17.5% increase in BTE, 21.14%
reduction in UBHC and 23.55% reduction in CO emissions, marginal increase of 12.54% NOx
emission. “Simarouba Biodiesel” can be a potential alternate fuel for diesel engines with little
modification in the engine parameters.


Keywords


Graphene; Nano particles; Surfactants; Simarouba; Biodiesel; Nano fuels; Injection pressure

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