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An Experimental Study on the Emission Characteristics of GTL Fuel with Injection Timings in CRDi Single Cylinder Engine  

Kim, Byoung-Jun (Department of Mechanical Engineering, Myongji University)
Lee, Yong-Gyu (Department of Mechanical Engineering, Myongji University)
Choi, Kyo-Nam (Department of Mechanical Engineering, Myongji University)
Jeong, Dong-Soo (Korea Institutes of Machinery & Materials(KIMM))
Cha, Kyung-Ok (Department of Mechanical Engineering, Myongji University)
Publication Information
Transactions of the Korean Society of Automotive Engineers / v.16, no.1, 2008 , pp. 181-187 More about this Journal
Abstract
Recently, alternative fuels are drawing more attentions due to the increasing need for lower emission characteristics and fuel consumption rate in automotive engines. The GTL(gas to luquid) is the one of most favored candidates. It has higher cetane number(more than 75) and almost negligible sulphur and aromatic contents. Therefore, enhanced emission characteristics are expected even in the application in diesel engines without any modification. In this study, the cylinder pressure and heat release, emission characteristics with fuel injection timings are compared between diesel and GTL fuel in the single cylinder diesel engine. Noticeable reduction in PM, THC and CO emission are observed due to lower sulphur and aromatic contents in GTL. Also, the ignition delay decreased due to higher cetane number of GTL, which slightly decreased the amount of NOx emissions. With the retards of main injection timing, NOx decreases more for the case of GTL, while the level of THC and CO emissions still remains lower than the case of diesel. Therefore, there is much room for the control of injection timing for NOx reduction without sacrificing THC and CO emissions. With the retards of main injection timing, Small size distribution of PM became lager and there amount increased. But from all conditions, size distribution of PM for the case GTL was lower than Diesel.
Keywords
GTL(Gas To Liquid); Emission characteristics; Heat release rate; Single cylinder diesel engine; Ignition delay; PM(Particulate Matter); CRDi(Common Rail Direct injection);
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Times Cited By KSCI : 1  (Citation Analysis)
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