Performance & Emission Optimization on Emulsified Diesel with 2-Butanol of a Diesel Engine through RSM

Abstract

Alcohol fuel such as butanol is potential to use in diesel engine. While diesel-emulsion is an alternative fuel to standard diesel fuel can significantly reduce the emission levels of engine. These alternative fuel give significant different on engine performance as well as exhaust emission. The aim of this study is to optimize the engine operating parameter of water-diesel-butanol (WDBu) on the performance and emission from a diesel engine. The three types of WDBu (W6DBu5, W6DBu10, W6DBu15) was produced subsequently the fuel was prepared in the proportion of W6DBu5 (6%-water, 87%-diesel, 5%-butanol, 2%-surfactants), W6DBu10 (6%-water, 82%-diesel, 10%-butanol, 2%-surfactants) and W6DBu15 (6%-water, 77%-diesel, 15%-butanol, 2%-surfactants) by volume with a hydrophilic-lipophilic balance of 10. An experimental investigation was conducted with respect to type of fuel injected, engine speed and engine load. The data from experimental was used to simulate the design of experiment (DOE) by using response surface method (RSM). Engine power, brake specific fuel consumption, brake thermal efficiency, carbon monoxide and nitrogen oxide have been investigated. The optimal values of the Power, BTE, BSFC, CO, NOx and CO₂ were found to be 26.2 kW, 36.8% , 227.6 g/kWhr, 1.6%, 464.9 ppm and 11.5% respectively.