Exhaust Emission Analysis of An Internal Combustion Engine Fuelled With Hydrogen-Ethanol Dual Fuel

The work presented in this paper is an attempt to evaluate the exhaust emissioncharacteristics of a hydrogen-ethanol dual fuel combination with different percents of hydrogensubstitutions (i.e. 0-80 % by volume and of 20 % increment) at three different compression ratios of7: 1, 9: 1 and 11:1. experimental investigations have been carried out on a computer interfaced with;four-stroke cycle, single-cylinder, compression ignition (ci) engine, which was converted to sparkignition (s1) and carburetion, to suit ethanol fuel and a provision was made at the inlet manifold of thesaid engine to induct hydrogen gas. the effect of hydrogen substitutions on co, hc, nox emissionsat 7, 9 and 11 compression ratios were determined. it was found that. at 100 % load, the percentage ofhydrogen substitution varied from zero to 80 % and the nox emissions increased by 58.62, 59.3,62.74 % for 7, 9, 11 compression ratios respectively. when the effect of compression ratio changedfrom 7: 1 to 11:1 the same change took place in the percentage of substitution which was a reductionof co and hc by 30.4 and 21.67 %.