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Comparative Investigation of Gaseous Emissions and Particle Emission Characteristics from Turbo-Charged Direct Injection (DI) Engine with Gasoline and LPG Fuel Depending on Engine Control Parameters

Authors
Ahn, SeunghoCho, JaehoBaek, SunghaKim, KangjinKo, JinyoungMyung, Cha-LeePark, Simsoo
Issue Date
4월-2020
Publisher
KOREAN SOC AUTOMOTIVE ENGINEERS-KSAE
Keywords
Turbo-charged gasoline direct injection; Alternative fuel; Liquified petrolum gas; Particulate matter; Gaseous emissions; Engine dynamometer; Engine control parameter
Citation
INTERNATIONAL JOURNAL OF AUTOMOTIVE TECHNOLOGY, v.21, no.2, pp.451 - 457
Indexed
SCIE
SCOPUS
KCI
Journal Title
INTERNATIONAL JOURNAL OF AUTOMOTIVE TECHNOLOGY
Volume
21
Number
2
Start Page
451
End Page
457
URI
https://scholar.korea.ac.kr/handle/2021.sw.korea/56761
DOI
10.1007/s12239-020-0042-7
ISSN
1229-9138
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 similar to 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.
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