Effects of blending bioethanol with gasoline on spark-ignition engine - A review

Abstract

Due to strict government regulations and fossil fuel depletion, it was necessary to look for alternatives to traditional fuel sources. Energy demand is increasing day by day due to improved transportation and population growth. Biofuel is an alternative fuel derived from various types of biomasses. Biofuels are receiving scientific and public attention. This can be caused by factors such as the need to strengthen energy security, rising oil prices, and concerns about greenhouse gas (GHG) emissions from fossil fuels. Biofuels are especially attractive to developing countries because they can arouse economic development in rural areas and alleviate poverty by creating employment opportunities & higher incomes in the agriculture sector.  To evaluate the effects of diesel/ gasoline on engine operation much research had been carried out. The blending of bioethanol leads to improve physicochemical properties which are responsible to improve the SI engine. SI engine operation improves with the help of Physico-chemical properties of bioethanol. The present review illustrates some of the recent research findings on the production of bioethanol from different types of biomasses, their physicochemical properties, and their impact on the engine: combustion characteristics, engine performance, emissions, the effect of bioethanol gasoline blending & operating condition for NOx emission in SI engine.