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http://dx.doi.org/10.3795/KSME-B.2011.35.4.371

Effects of Aromatics and T90 Temperature for High Cetane Number Fuels on Exhaust Emissions in Low-Temperature Diesel Combustion  

Han, Man-Bae (Dept. of Mechanical and Automotive Engineering, Keimyung Univ.)
Publication Information
Transactions of the Korean Society of Mechanical Engineers B / v.35, no.4, 2011 , pp. 371-377 More about this Journal
Abstract
The aim of this study is to investigate the effects of aromatics and T90 temperature for high cetane number (CN) of diesel fuels on combustion and exhaust emissions in low-temperature diesel combustion in a 1.9 L common rail direct injection diesel engine at 1500 rpm and 2.6 bar BMEP. Four sets of fuels with CN 55, aromatic content of 20% or 45% (vol. %), and T90 temperature of $270^{\circ}C$ or $340^{\circ}C$ were tested. Given engine operating conditions, all the fuels showed the same tendency of decrease of PM with an increase of an ignition delay time. At the same ignition delay time, the fuels with high T90 produced higher PM. At the same MFB50% location the amount of NOx was similar for all the fuels. Furthermore, at the same ignition delay time the amounts of THC and CO were similar as well for all the fuels. The amount of THC and CO increased with an extension of the ignition delay time mainly because of the increase of fuel-air over-mixing.
Keywords
Low-Temperature Diesel Combustion; Cetane Number; Aromatics; Temperature of Distillation Recovery; Mass Fraction Burned;
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Times Cited By KSCI : 3  (Citation Analysis)
Times Cited By SCOPUS : 0
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