Details

Autor(en) / Beteiligte

• Krishnan, M. Gowthama
• Rajkumar, Sundararajan

Titel

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

Ist Teil von

• Energy (Oxford), 2022-08, Vol.252, p.124022, Article 124022

Ort / Verlag

Oxford: Elsevier Ltd

Erscheinungsjahr

2022

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• 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. •Dual fuel combustion (DFC) of isobutanol with diesel/biodiesel fuels is examined.•Performance, emission, and energy-exergy characteristics of DFC are analyzed.•DFC reduced NOx and smoke emissions simultaneously at low and medium loads.•Exergy efficiency increased (6.14% maximum) in DFC (B20-IB) at 30% premixed ratio.•Exergy performance coefficient is enhanced by 7.08% in B20-IB at 30% premixed ratio.