Performance and Emission Characteristics of CI Engine When Fuelled with Pongamia Biodiesel and Zinc Oxide Nano Fluid as Additive

Abstract

Diesel engine play important role in the field of commercial transportation. However, the rapid depletion of petroleum products and the stringent regulations lay down by the government to engine manufacturers and consumers to follow the emission norms to save the environment from diesel engine pollution. In this regard, biodiesel derived from various vegetable oils such as pongamia, jatropha, soybean, palm, neem etc. considered as potential alternative fuel for diesel engine. The direct usage of vegetable oil in diesel engine is restricted because of their high viscosity, poor atomization, incomplete combustion and carbon deposition on the fuel injectors. The viscosity of vegetable oil reduced by the process of transesterification by converting vegetable oil into methyl ester or ethyl ester known as biodiesel. The objective of this paper is comparision of performance and emissions of diesel engine with diesel and blending of biodiesel by using nano fluid as additive. Further the work is done on direct injection diesel engine continued by varying the proportion of nano fluid (zinc oxide) with blending of pongamia biodiesel. In this paper we are experimentally calculating the performance characteristics like brake thermal efficiency, specific fuel consumption and emissions like CO, NOx, HC of single cylinder diesel engine with pongamia biodiesel as a fuel by varying nano fluid proportion.