Diesel engine play important role in the field of commercial transportation and agricultural machinery on account of its superior fuel efficiency. Due to shortage of diesel fuel and its increasing cost as well as hazardous emission emitted by diesel engine, th use of biodiesel and its blends has gained importance over the past two decades due to its environmental and economic benefits. Many countries are evaluating a variety of alternative fuels for use in motor vehicles in an attempt to reduce greenhouse emis warming and to improve the energy security of the nations. Blended fuel is a replacement for the diesel fuel in CI engines due to its significant environmental benefits. The use of blended fuel leads to reduction in particulate matter, hydrocarbon and carbon monoxide emissions that decrease in fuel consumption and the nitrous oxide emission on diesel engine without any modification. The addition of Nano particles with blended diesel fuel increases the efficiency and decreases the emissions. Metal oxides such as alumina, titanium oxide, cerium oxide in the form of nano particles can be used to increase the efficiency as well as to decrease emission. In this review paper work has been done to demonstrate the effect of @ IJTSRD |