73 0

Effects of equivalence ratio on the near-stoichiometric combustion and emission characteristics of a compression ignition (CI) engine

Title
Effects of equivalence ratio on the near-stoichiometric combustion and emission characteristics of a compression ignition (CI) engine
Author
박성욱
Keywords
CI engine; Diesel; Equivalence ratio; Stoichiometric combustion
Issue Date
2013-02
Publisher
Elsevier Science B.V., Amsterdam.
Citation
Fuel Processing Technology, Feb 2013, 106, P.215-221
Abstract
In the present study, the combustion and emission characteristics under near-stoichiometric conditions were investigated for a compression ignition engine. In order to control the equivalence ratio, the exhaust gas recirculation (EGR) rate was changed while the amount of fuel was held constant. Furthermore, two different injection pressures (50 and 100 MPa) were used to study the effects of injection pressure on combustion and emissions. The experimental apparatus consisted of a test engine based on a single-cylinder applied common-rail direct-injection system with a displacement volume of 373.3 cm(3), a compression ratio of 17.8, a re-entrant type piston-bowl, and exhaust emission measurements. The results showed that the indicated mean effective pressure (IMEP) gradually decreased as the equivalence ratio increased for cases of near TDC injection. The operating range of the injection timing was extended at higher injection pressures. Furthermore, extremely low NOx emission was achieved under near-stoichiometric combustion conditions, even at a high injection pressure of 100 MPa. While soot emission significantly increased in the near-stoichiometric combustion regime, it was subsequently reduced at a high injection pressure. (C) 2012 Elsevier B.V. All rights reserved.
URI
http://www.sciencedirect.com/science/article/pii/S0378382012002883?via%3Dihubhttp://hdl.handle.net/20.500.11754/44047
ISSN
0378-3820
DOI
10.1016/j.fuproc.2012.07.028
Appears in Collections:
COLLEGE OF ENGINEERING[S](공과대학) > MECHANICAL ENGINEERING(기계공학부) > Articles
Files in This Item:
There are no files associated with this item.
Export
RIS (EndNote)
XLS (Excel)
XML


qrcode

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

BROWSE