The depletion of world
petroleum reserves and the increased environmental concern have stimulated the
search of alternative fuel which is to be environment friendly. Bio-fuels
have the potential to become alternative fuel for fossil fuels. Biodiesel is a fuel comprised of mono alkyl
esters of long chain fatty acids derived from vegetable oils or animal fats.
Biodiesel is reliable, renewable, biodegradable and regarded as a clean
alternative fuel to reduce exhaust emissions. Vegetable oil like Neem
oil is considered as alternate fuels to diesel. This review has been taken up to identify the
performance and emission characteristics of CI engine using Neem biodiesel with
additives. The review concludes that the additives usage in bio-diesel is
inseparable for the better engine performance and emission control and further
research is needed to develop bio-diesel specific additives.
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