Impact of Fuel and Injection System on Particle Emissions from a GDI Engine

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Impact of Fuel and Injection System on Particle Emissions from a GDI Engine. / Wang, Chongming; Xu, Hongming; Herreros, Jose; Wang, Jianxin; Cracknell, Roger.

In: Applied Energy, Vol. 132, 01.11.2014, p. 178-191.

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@article{d0fdf0a0129c459d8fba71cb6b276874,
title = "Impact of Fuel and Injection System on Particle Emissions from a GDI Engine",
abstract = "In recent years, particulate emissions from the gasoline direct injection (GDI) engine, especially the ultrafine particulates, have become a subject of concern. In this study, the impact of fuel (gasoline versus ethanol) and injection system (injection pressure and injector condition) on particle emissions was investigated in a single cylinder spray-guided GDI research engine, under the operating conditions of stoichiometric air/fuel ratio, 1500 rpm engine speed and 3.5–8.5 bar IMEP. The results show that, in a spray guided GDI engine, ethanol combustion yields much lower particle mass (PM) but higher particle number (PN) emissions, compared to gasoline. Depending on the fuel used, the PM and PN emissions respond differently to injection pressure and injector condition. For gasoline, the injection system has a significant impact on the PM and PN emissions. High injection pressure and clean injector condition are both essential for low particle emissions. Compared to gasoline, the particle emissions from ethanol combustion is less sensitive to the injection system, due to its higher volatility and diffusive combustion which produces less soot. Furthermore, a PM and PN trade-off was observed when using gasoline and ethanol, and when using high injection pressures.",
keywords = "particulate matter , injector fouling , injection pressure , GDI",
author = "Chongming Wang and Hongming Xu and Jose Herreros and Jianxin Wang and Roger Cracknell",
year = "2014",
month = nov,
day = "1",
doi = "10.1016/j.apenergy.2014.06.012",
language = "English",
volume = "132",
pages = "178--191",
journal = "Applied Energy",
issn = "0306-2619",
publisher = "Elsevier",

}

RIS

TY - JOUR

T1 - Impact of Fuel and Injection System on Particle Emissions from a GDI Engine

AU - Wang, Chongming

AU - Xu, Hongming

AU - Herreros, Jose

AU - Wang, Jianxin

AU - Cracknell, Roger

PY - 2014/11/1

Y1 - 2014/11/1

N2 - In recent years, particulate emissions from the gasoline direct injection (GDI) engine, especially the ultrafine particulates, have become a subject of concern. In this study, the impact of fuel (gasoline versus ethanol) and injection system (injection pressure and injector condition) on particle emissions was investigated in a single cylinder spray-guided GDI research engine, under the operating conditions of stoichiometric air/fuel ratio, 1500 rpm engine speed and 3.5–8.5 bar IMEP. The results show that, in a spray guided GDI engine, ethanol combustion yields much lower particle mass (PM) but higher particle number (PN) emissions, compared to gasoline. Depending on the fuel used, the PM and PN emissions respond differently to injection pressure and injector condition. For gasoline, the injection system has a significant impact on the PM and PN emissions. High injection pressure and clean injector condition are both essential for low particle emissions. Compared to gasoline, the particle emissions from ethanol combustion is less sensitive to the injection system, due to its higher volatility and diffusive combustion which produces less soot. Furthermore, a PM and PN trade-off was observed when using gasoline and ethanol, and when using high injection pressures.

AB - In recent years, particulate emissions from the gasoline direct injection (GDI) engine, especially the ultrafine particulates, have become a subject of concern. In this study, the impact of fuel (gasoline versus ethanol) and injection system (injection pressure and injector condition) on particle emissions was investigated in a single cylinder spray-guided GDI research engine, under the operating conditions of stoichiometric air/fuel ratio, 1500 rpm engine speed and 3.5–8.5 bar IMEP. The results show that, in a spray guided GDI engine, ethanol combustion yields much lower particle mass (PM) but higher particle number (PN) emissions, compared to gasoline. Depending on the fuel used, the PM and PN emissions respond differently to injection pressure and injector condition. For gasoline, the injection system has a significant impact on the PM and PN emissions. High injection pressure and clean injector condition are both essential for low particle emissions. Compared to gasoline, the particle emissions from ethanol combustion is less sensitive to the injection system, due to its higher volatility and diffusive combustion which produces less soot. Furthermore, a PM and PN trade-off was observed when using gasoline and ethanol, and when using high injection pressures.

KW - particulate matter

KW - injector fouling

KW - injection pressure

KW - GDI

U2 - 10.1016/j.apenergy.2014.06.012

DO - 10.1016/j.apenergy.2014.06.012

M3 - Article

VL - 132

SP - 178

EP - 191

JO - Applied Energy

JF - Applied Energy

SN - 0306-2619

ER -