THERMAL SCIENCE

International Scientific Journal

EFFECT OF DIFFERENT QUATERNARY BLENDS OF DIESEL-ETHANOL-METHANOL-BUTANOL ON COMBUSTION AND SPRAY CHARACTERISTICS OF DIESEL ENGINE

ABSTRACT
The impact of different diesel-ethanol-methanol-butanol (DEMB) blends on the spray and combustion characteristics of a single-cylinder Diesel engine has been investigated. For this study, commercially available software called Diesel-RK that can predict the spray and combustion parameters has been utilized. Some ex-periments have also been conducted using D100 (100% pure diesel by volume) fuel at a fixed speed of 1500 rpm at peak load while maintaining the same operating conditions as the simulation. The predicted results have been validated against the experimental results obtained with D100. The results of the simulation were found to be in reasonably good agreement with those of the experiment. The analysis of the simulated results shows that the heat release rate, ignition delay and peak cyl-inder pressure increase for all quaternary blends, whereas the peak combustion temperature decreases at low load and increases at higher load. In terms of spray characteristics, the investigations show that quaternary alcohol blends shorten spray tip penetration and increase spray cone angle. Furthermore, as the propor-tion of ethanol and methanol in the DEMB blends increases, the atomized fuel droplets become smaller in diameter and the sauter mean diameter of the blends gradually drops. The authors also suggest that the quaternary blends of this pre-sent investigation have a higher potential to be used as a next-generation fuel in Diesel engine.
KEYWORDS
PAPER SUBMITTED: 2024-02-12
PAPER REVISED: 2024-06-12
PAPER ACCEPTED: 2024-07-01
PUBLISHED ONLINE: 2024-08-31
DOI REFERENCE: https://doi.org/10.2298/TSCI240212190S
CITATION EXPORT: view in browser or download as text file
THERMAL SCIENCE YEAR 2025, VOLUME 29, ISSUE Issue 1, PAGES [411 - 425]
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2025 Society of Thermal Engineers of Serbia. Published by the VinĨa Institute of Nuclear Sciences, National Institute of the Republic of Serbia, Belgrade, Serbia. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution-NonCommercial-NoDerivs 4.0 International licence