Abstract :
In this study, the combustion and emission characteristics of biodiesel produced
from Cashew nut shell oil and its blends and diesel fuel were compared. The
experiments were performed in a single-cylinder direct injection diesel engine at
steady-state conditions over the constant RPM (1500 RPM). During the experiments,
the specific fuel consumption (SFC), pollutant emissions like hydrocarbon (HC),
carbon monoxide (CO), oxides of nitrogen NOx) and smoke, and in-cylinder pressures
were measured. The experimental results showed that, biodiesel blends had a 26.79 -
24% reduction in brake thermal relative to diesel fuel. On the other hand, Cashew nut
shell oil biodiesel drastically increases CO, HC and smoke, while the NOx emission
decreased. The combustion analysis showed that the addition of Cashew nut shell
oilbiodiesel to diesel fuel reduced the ignition delay period and also reduced the
premixed peak. These results showed that Cashew nut shell oil biodiesel and its blends
could be used without any modifications as an alternative fuel in diesel engine
Keyword :
Methyl ester, Transesterification, Biodiesel, Combustion &Emission