Abstract
Abstract — This paper describes the combustion, performance and emission parameters of a diesel engine fueled by wood pyrolysis oil (WPO) diesel emulsion with Diethyl ether (DEE) as an ignition improver. Experimental studies were carried out in a single cylinder, four stroke, air cooled, and DI diesel engine with three fuels that were WPO diesel emulsion, WPO diesel emulsions with addition of 2% and 4% DEE. The results were compared with the diesel fuel data, analysed and it is presented in the paper. The brake thermal efficiency is found to be higher by 6.34, 9.5 and 9.3 percentages for WPO diesel emulsion, WPO diesel emulsions with 2% and 4% DEE respectively when compared with diesel fuel at full load. The percentage reduction in NO emissions of about 19.21, 28.38 and 34.81 were noticed for the above said fuels. Index Terms — Diesel engine, emission, ignition improvers, performance, pyrolysis, surfactant . I. I NTRODUCTIONMany alternative fuels for compression ignition engines were introduced in the last two decades for replacement of diesel fuel. Liquid alternative fuel from biomass has a great scope especially in agriculture based countries and developing countries. than diesel up to 30% WPO and beyond that, it increased. Biomass can be converted into useful energy by adopting different techniques such as dry combustion, anaerobic digestion, bio photolysis, pyrolysis, liquefaction, gasification, hydrolysis and solvent extraction [1]. Out of this, pyrolysis has a few advantages such as simple and low pressure operation, negligible waste product and high conversion efficiency of the order of 83%. Pyrolysis is the thermal decomposition process of waste substances in the absence of oxygen or little presence of oxygen. Pyrolysis of biomass may yield solid, liquid and gaseous products [2]. Biomass resources can be used for energy production includes a wide range of materials such as forest residues, energy crops, organic wastes,
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