Exhaust Gas Analysis of Diesel and Bio-Ethanol Blended Fuel Samples Running on Compression Ignition

Abstract

This study results the evaluation of exhaust gases of diesel-Cadoba farinosa forskk bio-ethanol blended fuel samples run on a compression ignition engine. For the blended fuel samples; BDE2 (97% Diesel and 2% bio-ethanol volumetric proportion), BDE4, BDE6, BDE8 and BDE10 with 1% biodiesel (palm oil methyl esters) was maintained throughout to prevent phase separation of the ethanol and diesel respectively. The engine performance and exhaust gas - Cadoba Farinosa Forskk analysis were also conducted to investigate the effect of bio-ethanol as diesel fuel extender, with a TD110-115 single cylinder, four-stroke and air-cooled, compression ignition engine test rig, under different loading conditions, and incorporated with an SV-5Q automobile exhaust gas analyzer was used to monitor and measure the concentration of gaseous emissions, such as; exhaust gas temperature (EGT), carbondioxide (CO₂), carbon monoxide (CO), and unburned hydrocarbon (HC) from the engine tail pipe. Results of the test revealed a significant increase in exhaust gas temperature due to the rise in cylinder pressure and temperature respectively. An appreciable decrease in HC, CO, CO₂ emissions was recorded for all blended fuel samples with the exception of diesel. While, the least CO and CO₂ emission levels were observed for BDE10 fuel samples. On account of its satisfactory engine performance, fuel conservation advantages, and inherent greenhouse gas mitigation potentials, the candidacy of Cadoba Farinosa Forskk bio-ethanol and diesel blends, offers the promise of a prospective fuel for compression ignition engines.