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Effect of Two-Stage Fuel Injection Parameters on NOx Reduction Characteristics in a DI Diesel Engine

Title
Effect of Two-Stage Fuel Injection Parameters on NOx Reduction Characteristics in a DI Diesel Engine
Author
박성욱
Keywords
two-stage combustion; injection strategy; combustion characteristics; NOx reduction characteristics; soot emissions
Issue Date
2011-11
Publisher
MDPI AG, POSTFACH, CH-4005 BASEL, SWITZERLAND
Citation
Energies, 2011, Vol 4, Iss 11, P2049-2060
Abstract
The aim of this study was to confirm the effects of two-stage combustion on the combustion and NOx reduction characteristics of a four cylinder direct injection diesel engine. In order to analyze the combustion and emission characteristics, various injection parameters, such as injection quantity, injection timing and injection pressure were used under constant engine speed and engine load. In addition, the experimental results of two-stage combustion are compared to the single injection when injection timing is 5 degrees BTDC. The experimental results showed that NOx emissions were significantly reduced when applying two-stage combustion. In particular, an injection strategy when the first and second injections have a same quantity, the results showed the maximum reduction of NOx emissions in this experiment. The NOx emissions were also reduced when the timing of the first injection was advanced. However, NOx emissions indicated almost similar concentration regardless of first injection timings when the first injection timing was earlier than 50 degrees BTDC. In the case of soot emissions were slightly increased compare to the single injection cases at tested conditions.
URI
https://doaj.org/article/a54c33238b614a999c1fc3abbf07ea95?http://hdl.handle.net/20.500.11754/37404
ISSN
1996-1073
DOI
10.3390/en4112049
Appears in Collections:
COLLEGE OF ENGINEERING[S](공과대학) > MECHANICAL ENGINEERING(기계공학부) > Articles
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