Biodiesel, HSD, and JP-8 Combustion Process and Emission Characteristics in a Dual-Stage Fuel Injection Condition
International Journal of Energy and Power Engineering
Volume 3, Issue 4, August 2014, Pages: 209-216
Received: Aug. 18, 2014; Accepted: Sep. 1, 2014; Published: Sep. 20, 2014
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Author
Hyungmin Lee, Department of Naval Ship Propulsion System Engineering, Republic of Korea Naval Academy, Jinhaegu, Changwonsi, Gyeongsangnamdo, Korea
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Abstract
This research was focused on an investigation of the effect of injection dwell time in a dual-stage injection on the combustion and emission characteristics of biodiesel using an optically accessible single-piston diesel engine. In addition, the results from biodiesel combustion and emission characteristics were compared to those of fossil fuels such as HSD and JP-8 using combustion process visualization as well as emission analyzer. Regarding combustion characteristics, JP-8 showed the highest peak in-cylinder pressure and rate of heat release in comparison to biodiesel and HSD because the higher lower heating value and vaporization characteristics of JP-8 improved premixed combustion. However, the IMEP of JP-8 was lower than the corresponding pressure of HSD. From the viewpoint of emissions, biodiesel had reduced emissions of NOx, HC, CO, and CO2 compared to fossil fuels regardless of the injection dwell time. The natural luminosity combustion images indicated that the biodiesel fuel had a shorter ignition delay, and the combustion progress of JP-8 was accelerated due to superior vaporization, although the initial combustion was slightly delayed in the second injection phase compared to biodiesel and HSD.
Keywords
Injection Dwell Time, Dual Stage Injection, Biodiesel, HSD, JP-8
To cite this article
Hyungmin Lee, Biodiesel, HSD, and JP-8 Combustion Process and Emission Characteristics in a Dual-Stage Fuel Injection Condition, International Journal of Energy and Power Engineering. Vol. 3, No. 4, 2014, pp. 209-216. doi: 10.11648/j.ijepe.20140304.15
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