It is better to use methyl ester instead of fossil-based diesel fuel due to its various benefits, that is, availability, high lubricity, low sulfur contents, low aromatic compounds, environmentally friendly nature, the existence of a carbon dioxide (CO 2) cycle in burning period, viability, and biodegradability.
Therefore, the exploration is focused on numerous feedstocks (edible/nonedible oils along with its methyl esters (biodiesel)) as a probable source of fuel for automobile sector. The another reason for emphasis on alternate fuel which can be produced from readily accessible resources is that the countries which do not have sufficient resources of fossil fuel and import crude petroleum are facing foreign exchange problem or energy crisis. These ever-increasing energy demand, rapid depletion of crude oil, and environmental pollution have an emphasis on a new feasible source of energy known as biofuel (mainly biodiesel). Also, the pressure of environmental monitoring authorities forces the automobile companies to diminish the greenhouse gas emissions from the vehicles.
Hence, the automobile industries are emphasizing on cleaner transport systems that decrease the environmental pollution and provide at least the same efficiency as normal diesel fuel. Today, the air contamination is also a severe concern as higher pollutants in today’s environment are from internal combustion (IC) engine tailpipe emissions. The comprehensive review concluded that binary fuel approach has potential to completely eliminate diesel from CI engines.ĭemand of energy has been increased day by day due to the usage of nearly 600 million automobiles by 7 billion people throughout the world. These investigations have provided positive results. Some researchers have used this binary fuel blend with minor adjustments to the engine parameters. Most researchers had suggested optimum blends from their respective studies that support capability for complete elimination of diesel from CI engines. The present study provides comprehensive information on the emission and performance characteristics of binary biodiesel-oil fuel blends. The main motive for the blending of two fuels is that the inferior properties of one biofuel remunerate from improved properties of the other fuel considerably improves the physicochemical properties of the blend. Blending of methyl ester with edible and nonedible oils in different volumetric ratios has the potency to give a stable mixture and that can be used as a fuel in diesel engines. Binary fuel blend (a blend of low and high viscous fuel) is one of the best environmentally friendly alternative in CI engines. Diversified research in alternate sources arises become necessity due to higher consumption of fossil fuels along with their adverse impacts on the environment, even to the point of complete elimination of diesel from compression-ignition (CI) engines.
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