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Numerical and Experimental Study on the Combustion and Emission Characteristics of a Dimethyl Ether (DME) Fueled Compression Ignition Engine

Title
Numerical and Experimental Study on the Combustion and Emission Characteristics of a Dimethyl Ether (DME) Fueled Compression Ignition Engine
Author
박성욱
Keywords
HOMOGENEOUS CHARGE COMPRESSION; PRESSURE INJECTION SYSTEM; LOW-TEMPERATURE OXIDATION; RAPID COMPRESSION; DIESEL COMBUSTION; REACTION-KINETICS; ALTERNATIVE FUEL; HCCI COMBUSTION; FLOW REACTORS
Issue Date
2012-06
Publisher
EDITIONS TECHNIP
Citation
OIL AND GAS SCIENCE AND TECHNOLOGY,Vol.67 No.3 [2012],p479-490
Abstract
Numerical and Experimental Study on the Combustion and Emission Characteristics of a Dimethyl Ether (DME) Fueled Compression Ignition Engine - A numerical investigation was carried out to study on the combustion and emission characteristics of dimethyl ether (DME) with wide ranges of injection timings in compression ignition engines. In order to simulate DME combustion processes, a KIVA-3V code coupled with a chemistry solver was used to solve the detailed chemical kinetics model of DME oxidation. In addition, the Kelvin-Helmholtz-Rayleigh-Taylor (KH-RT) hybrid breakup model and Renormalization Group (RNG) k-epsilon models were applied to analyze the spray characteristics and turbulent flow, respectively. To predict the NO formation during DME combustion, a reduced Gas Research Institute (GRI) NO mechanism was used. From these results on the combustion and emission, the calculated results were compared with experimental ones for the same operating conditions. In the combustion characteristics, the calculated combustion pressure and heat release rates agreed well with experimental results. The levels of experimental NOx emissions was reduced as the start of the injection timing retarded, and also these trends appeared in calculated emission characteristics. Additionally, the calculated CO and HC emissions show an increasing trend as the start of the injection is retarded.
URI
https://ogst.ifpenergiesnouvelles.fr/articles/ogst/pdf/first/ogst100013.pdfhttp://hdl.handle.net/20.500.11754/37869
ISSN
1294-4475
DOI
10.2516/ogst/2011130
Appears in Collections:
COLLEGE OF ENGINEERING[S](공과대학) > MECHANICAL ENGINEERING(기계공학부) > Articles
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