Investigation of Performance and Emission Characteristics of a Compression Ignition Engine with Oxygenated Fuel

Abstract

Abstract-Investigation of performance and emission characteristics is carried out on compression ignition engine using methanol as oxygenated compound in diesel fuel. Fuel formulations are performed with mixture of additives and methanol content varying from 5 to 15% in volume in relation to the diesel fuel. Performance of direct injection diesel engine with blends is compared with that of diesel fuel. The study showed that the engine thermal efficiency increases with increase in oxygen mass fraction (or methanol mass fraction). Smoke is formed in combustion chamber because of incomplete combustion of fuel. The quantity of smoke in exhaust gas can be reduced by supplying additional oxygen through these fuel blends. It showed a marked reduction in exhaust smoke without any cyclic irregularities. Further increase in the fuel injection advance angle has achieved a better engine thermal efficiency.