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HERO ID
3847436
Reference Type
Journal Article
Title
The effect of oxygenated fuel properties on diesel spray combustion and soot formation
Author(s)
Park, W; Park, S; Reitz, RD; Kurtz, E
Year
2017
Is Peer Reviewed?
Yes
Journal
Combustion and Flame
ISSN:
0010-2180
Volume
180
Page Numbers
276-283
DOI
10.1016/j.combustflame.2016.02.026
Web of Science Id
WOS:000401682700028
Abstract
Diesel engines have advantages due to their potential for high fuel conversion efficiency. However, it is necessary to reduce pollutant emissions, particularly NOx and soot to meet emission mandates. Many studies have shown that oxygenated fuel additives can effectively reduce soot emissions. In this research, to investigate the effect of oxygenated fuel properties on combustion and soot emission, CFD simulations were carried out using newly developed chemical mechanisms for various oxygenated fuels such as tripropylene glycol methyl ether, methyl decanoate, and dimethyl ether. The results show that the formation of soot precursors decreases with increased oxygen content and decreased number of C-C bonds in the fuel. The fuel molecular structure strongly affects soot formation in addition to fuel-air mixing. Comparisons of fuel blends (oxygenated fuels with n-hexadecane) including methyl decanoate, which have the same fuel oxygen ratio, show that the effects of the ignition delay and lift-off length control soot formation for fuels with similar fuel oxygen ratio and number of C-C bonds. (C) 2016 The Combustion Institute. Published by Elsevier Inc. All rights reserved.
Keywords
Oxygenated fuel; Diesel spray combustion; Soot emission; Tri-propylene glycol methyl ether (TPGME); Methyl decanoate (MD); Dimethyl ether (DME)
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