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Numerical and experimental study of combustion and emission characteristics in gasoline direct-injection compression ignition engines using intake preheating

Title
Numerical and experimental study of combustion and emission characteristics in gasoline direct-injection compression ignition engines using intake preheating
Author
박성욱
Keywords
Gasoline direct-injection compression ignition; intake preheating; equivalence ratio; ignition dela; KIVA-3V release 2; Chemkin chemistry solver II
Issue Date
2013-04
Publisher
SAGE PUBLICATIONS LTD, 1 OLIVERS YARD, 55 CITY ROAD, LONDON EC1Y 1SP, ENGLAND
Citation
PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART D-JOURNAL OF AUTOMOBILE ENGINEERING 권: 227 호: 4 페이지: 459-471
Abstract
This paper presents a numerical and experimental study of the combustion and emission characteristics of a gasoline direct-injection compression ignition engine using intake preheating. The gasoline direct-injection compression ignition engine was predicted to reduce emissions compared with the emissions from a conventional diesel engine. To compare the combustion and emission characteristics of the gasoline direct-injection compression ignition and diesel engines, numerical modelling was conducted using the KIVA-3V release 2 code, which is integrated with the Chemkin chemistry solver II. Numerical simulations were performed under a variety of conditions to determine the optimal conditions for gasoline direct-injection compression ignition engine operation. In order to achieve the gas pressure in the cylinder and the emission characteristics, experiments were performed using a single-cylinder engine. The simulation results agreed well with the experimental data. The gasoline autoignition was in the parcels with a lower equivalence ratio of 0.6-0.8 as opposed to the diesel autoignition parcels with a high equivalence ratio of greater than 1. The ignition delay of gasoline was longer than that of diesel; therefore, the gasoline direct-injection compression ignition engine could reduce the soot emissions. The nitrogen oxide emission levels for gasoline direct-injection compression ignition were increased because of the intake preheating.
URI
http://dx.doi.org/10.1177/0954407012457489http://hdl.handle.net/20.500.11754/45003
ISSN
0954-4070
DOI
10.1177/0954407012457489
Appears in Collections:
COLLEGE OF ENGINEERING[S](공과대학) > MECHANICAL ENGINEERING(기계공학부) > Articles
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