Impacts of Blending Feed Stock Generated Biodiesel on Performance and Emission Parameters of Diesel Engine-Review

Abstract

Alternative fuels are in demand to overcome limitations of fossil fuels since decades. Indian Standards of biodiesel exists and its wide application is appealed and a National Policy on Bio fuels was implemented by Ministry of New and Renewable Energy. This Paper presents a review of biodiesel, Indian standards and difference of ASTM/EN for biodiesel. Biodiesel and its different blend fuelled in Diesel engine exhibit different engine performance and exhaust gas emission characteristics. Various performance parameters affects compression ignition diesel engine (DI-CI) performance, list includes fuel injection pressure, fuel quantity injected and injection timing, shape of combustion chamber, position and size of injection nozzle hole, fuel spray pattern, etc. Few paramount factors governing DI-CI engine includes various types of biodiesel and its blending with diesel engine. Types of blending are namely mahua, jatropha, karanja, waste cooking oil etc. Authors have blended them with varying percentage with varying fuel injection pressure at different loads. Few have also used alumina as nano additives in mahua biodiesel (B25100Al2O3) to check it effects on performance parameters as well as on emission characteristics. Effect of blending with Karanja, Jatropha, Neem , mahua etc as biodiesel with inclusion of alumina as nano additives are reviewed for related performance parameters (i.e. brake thermal efficiency (BTE), brake specific fuel consumption (BSFC)) and emission characteristics (i.e. CO, HC, NOx) in exhaust gas emission in different conditions for DI-CI Engine performance.