THERMAL SCIENCE

International Scientific Journal

Jie Ruan

,

Helin Xiao

,

Xiaolong Yang

,

Fengyun Guo

,

Jiaqi Huang

,

Hongling Ju

EFFECTS OF INJECTION TIMING ON COMBUSTION PERFORMANCE AND EMISSIONS IN A DIESEL ENGINE BURNING BIODIESEL BLENDED WITH METHANOL

ABSTRACT
Currently, biodiesel has been received much attention from many researchers around the world due to its clean and renewable characteristics. In the present study, combustion and emissions characteristics have been studied on a modified four-cylinder, 4-stroke, water-cooled, direct injection compression internal engine equipped with a common rail fuel injection system fueled with methanol-biodiesel blends as well as pure biodiesel. The experiment was operated at a constant engine speed of 1800 rpm and injection timing from 2.5-22.5 ° crank angle before top dead center. With the injection timing advanced, peak in-cylinder pressure and maximum heat release rate increased while combustion start points were advanced. Ignition delay was shorten first and then prolonged while brake thermal efficiency was increased first and then decreased. With the injection timing in advance, NOx emissions increased, 1,3-butadiene and benzene emissions decreased while hydrocarbon and acetaldehyde emissions decreased first and then increased, and soot emissions increased first and then decreased.
KEYWORDS
Biodiesel-Methanol blends, injection timing, Combustion and Emissions, diesel engine
PAPER SUBMITTED: 2019-12-11
PAPER REVISED: 2020-04-08
PAPER ACCEPTED: 2019-05-26
PUBLISHED ONLINE: 2020-07-11
DOI REFERENCE: https://doi.org/10.2298/TSCI191211202R
CITATION EXPORT: view in browser or download as text file
THERMAL SCIENCE YEAR 2021, VOLUME 25, ISSUE Issue 4, PAGES [2819 - 2829]
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Effects of injection timing on combustion performance and emissions in a diesel engine burning biodiesel blended with methanol

© 2024 Society of Thermal Engineers of Serbia. Published by the Vinča 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