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Visualizations of combustion and fuel/air mixture formation processes in a single cylinder engine fueled with DME

Title
Visualizations of combustion and fuel/air mixture formation processes in a single cylinder engine fueled with DME
Other Titles
air mixture formation processes in a single cylinder engine fueled with DME
Author
박성욱
Keywords
Dimethyl ether; Flame temperature; Endoscope; Engine speed; Combustion image
Issue Date
2014-01
Publisher
Elsevier B.V
Citation
Applied Energy,January 2014, 113, 294-301
Abstract
The purpose of this study is to investigate the effects of various engine conditions on the combustion, flame temperature and emission characteristics of dimethyl ether (DME) fuel compared with ultra-low sulfur diesel (ULSD) fuel through experimental and numerical analyzes. In order to analyze the temperature distribution, the KIVA-3V code and an optical HSDI diesel engine equipped with a visualization system were employed. The numerical validation was conducted with the experimental results from a DME-fueled compression ignition engine. In addition, measurement of the flame temperature from images captured during the combustion processes was performed using AVL-ThermoVision software. This investigation showed that the combustion pressure and heat release rate attained their peak value at the lowest engine speed condition for DME and ULSD fuels. The characteristics of the flame temperature value and distribution due to the differences in engine speed conditions and fuel properties were clearly revealed. When the engine speed increased, an inhomogeneous and low combustion temperature was observed. Furthermore, the nitrogen oxides (NOx) emissions, which are related to the combustion temperature, decreased as the engine speed increased.
URI
http://www.sciencedirect.com/science/article/pii/S0306261913005990?via%3Dihubhttp://hdl.handle.net/20.500.11754/47134
ISSN
0306-2619
DOI
10.1016/j.apenergy.2013.07.033
Appears in Collections:
COLLEGE OF ENGINEERING[S](공과대학) > MECHANICAL ENGINEERING(기계공학부) > Articles
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