Effects of dual fuel combustion on performance, emission and energy-exergy characteristics of diesel engine fuelled with diesel-isobutanol and biodiesel-isobutanol

M. Gowthama Krishnan and Sundararajan Rajkumar

Energy, 2022, vol. 252, issue C

Abstract: This experimental study investigates the effects of dual fuel combustion (DFC) of isobutanol on performance, emission, and energy-exergy characteristics of an off-road diesel engine using diesel and waste cooking oil biodiesel. The isobutanol is port injected at the premixed energy ratio (PER) of 10, 20, and 30% with intake air, while diesel, B20, and B100 are the direct in-cylinder injected fuels. The experiments indicated an improved brake thermal efficiency in DFC of diesel and B20 (1.22 and 5.27%) than their conventional combustion mode (CCM) at rated loads. The carbon monoxide emission from DFC is reduced than CCM at rated loads except B100. The DFC reduced the nitrogen-oxides (NOx) emission than CCM up to intermediate loads (60%). Compared to CCM, smoke emission at the rated load is lowered by 10.15%, 22.12%, and 7.40% in the DFC of diesel, B20, and B100 respectively at 30% PER. At 30% PER, the exergy efficiency of DFC of B20 is increased by 0.91, 5.23, 3.65, 1.22, and 6.14% from 20% to 100% loads compared to its CCM. Overall, the DFC of B20-isobutanol with 30% PER is observed to be a better choice in terms of improved performance, NOx and smoke emissions, and exergy efficiency.

Keywords: Higher alcohol; Isobutanol; Waste cooking oil biodiesel; Dual fuel combustion; Exergy efficiency; Exergy performance coefficient (search for similar items in EconPapers)
Date: 2022
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (5)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:energy:v:252:y:2022:i:c:s0360544222009252

DOI: 10.1016/j.energy.2022.124022

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