Numerical and experimental study of combustion and emission characteristics in gasoline direct-injection compression ignition engines using intake preheating
- Authors
- Choi, Mingi; Cha, Junepyo; Kwon, Seokjoo; Park, Sungwook
- Issue Date
- Apr-2013
- Publisher
- SAGE PUBLICATIONS LTD
- Keywords
- Gasoline direct-injection compression ignition; intake preheating; equivalence ratio; ignition delay; KIVA-3V release 2; Chemkin chemistry solver II
- Citation
- PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART D-JOURNAL OF AUTOMOBILE ENGINEERING, v.227, no.4, pp.459 - 471
- Indexed
- SCIE
SCOPUS
- Journal Title
- PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART D-JOURNAL OF AUTOMOBILE ENGINEERING
- Volume
- 227
- Number
- 4
- Start Page
- 459
- End Page
- 471
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/26746
- DOI
- 10.1177/0954407012457489
- ISSN
- 0954-4070
- 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.
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