Abstract
To meet greenhouse gas (GHG) emission target, automotive manufacturers should promote low carbon emission technology, including gasoline direct injection (GDI) systems. However, recent studies have shown that excessive levels of nanoparticles were emitted from GDI vehicles compared to port fuel injection (PFI) vehicles. One of the many ways to decrease nanoparticle emissions from GDI engine is to use alternative fuel This study used turbo charged 2.0 L 4-cylinder LPG direct injection engine (T-LPDi) that was converted from a turbo charged gasoline direct injection engine (T-GDI) with dedicated LPG fuel supply and control system. To analysis on combustion phenomena and nanoparticle emissions, in-cylinder pressure and exhaust gas were measured under engine dynamometer test. Additionally, various engine control parameters were swung to understand the effects of the control parameters on combustion and nanoparticle characteristics. Throughout this study, T-LPDi engine, compared to T-GDI engine, showed ∼ 9 % and 76 % reduction of CO2 and PN emissions respectively. By optimizing engine parameters based on parametric study, PN emissions were improved 70 % from the baseline of T-LPDi engine emissions.
Original language | English |
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Pages (from-to) | 451-457 |
Number of pages | 7 |
Journal | International Journal of Automotive Technology |
Volume | 21 |
Issue number | 2 |
DOIs | |
Publication status | Published - 2020 Apr 1 |
Bibliographical note
Funding Information:This study was supported by the Korea LPG Association, the Korea Institute of Energy Technology Evaluation and Planning (KETEP) and the Ministry of Trade, Industry & Energy (MOTIE) of the Republic of Korea (No. 20172010105770), the Korea University Grant, and the BK21 plus program (21A20131712520) through the National Research Foundation (NRF) funded by the Ministry of Education of Korea. The authors are gratefully acknowledging for those all.
Publisher Copyright:
© 2020, KSAE/114-01.
Keywords
- Alternative fuel
- Engine control parameter
- Engine dynamometer
- Gaseous emissions
- Liquified petrolum gas
- Particulate matter
- Turbo-charged gasoline direct injection
ASJC Scopus subject areas
- Automotive Engineering