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A lcohols are significant alternative and renewable fuel candidates for the utilization in the internal combustion engines due to encouraging favorable environmental and economic outputs. Long-chain alcohols have various advantages over short-chain alcohols because of their larger energy content, elevated cetane number (CN) and preferable blending properties, etc. The objective of the present experimental research deal with the exploring and compare the inf luence of the ternary fuel mixtures of petroleum-based diesel fuel, cottonseed oil methyl ester (COME) and long-chain alcohols of isopropanol (Pr), 1-butanol (Bt), and isopentanol (Pt) on the performance and emission characteristics of a single-cylinder, four-stroke, naturally-aspirated, direct-injection compression-ignition (CI) engine. As the prepared tested fuel samples, four different blends were as follows on a volume basis: B20 (20% COME + %80 diesel fuel), B20Pr20 (20% COME + %20 isopropanol + %80 diesel fuel), B20Bt20 (20% COME + %20 1-butanol + %80 diesel fuel), and B20Pt20 (20% COME + %20 isopentanol + %80 diesel fuel). The engine trials were carried out at various loads (0-1250 W) and under a constant speed (3000 rpm) to observe the aforementioned behaviors. Based on the experimental outcomes, brake specific fuel consumption (BSFC) values of B20Pr20 exhibited higher than those of other ternary blends at all loads. Brake thermal efficiency (BTE) values for B20Pt20 were observed as larger than those of ternary blends. B20Pt20 had higher exhaust gas temperature (EGT) values than those of B20Bt20 and B20Pr20. The infusion of long-chain alcohols to COME/diesel blend caused to reduce NOX emissions meanwhile isopropanol, 1-butanol, and isopentanol were the most to least inf luential alcohol types, respectively. Besides, with the addition of alcohol, a substantial decrement was noticed in smoke opacity at entire loads owing to the excess amount of oxygen content and lesser ratio of C/H of the alcohols. However, CO and HC emissions rose by infusion of long-chain alcohols to the blends. Finally, it can be concluded that higher alcohols could be a possible fuel additive for the fractional replacement for petroleum-based diesel fuel and biodiesel in the blends for CI engine practices. INTRODUCTION

hittite journal of science and engineering-b/hittite journal of science and engineering

An Experimental Study On The Performance And Exhaust Emission Characteristics Of A CI Engine Powered By Alcohol/Biodiesel/Diesel Fuel Blends Containing Different Types Of Alcohol (Isopropanol-C3, 1-Butanol-C4, And Isopentanol-C5)