Experimental evaluation of combustion phenomena in and nanoparticle emissions from a side-mounted direct-injection engine with gasoline and liquid-phase liquefied petroleum gas fuel

CATEGORY: ADVANCED FUELS
Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering January 2012 vol. 226 no. 1 112-122
Experimental evaluation of combustion phenomena in and nanoparticle emissions from a side-mounted direct-injection engine with gasoline and liquid-phase liquefied petroleum gas fuel
I G Hwang
K Choi
J Kim
C-L Myung
S Park*
spark@korea.ac.kr
School of Mechanical Engineering, Korea University, Seoul, Republic of Korea
*School of Mechanical Engineering, Korea University, 1, 5-Ga, Anam-dong, Sungbuk-gu, Seoul 136-701, Republic of Korea.
Abstract
Focuses on the experimental comparison of combustion phenomena and nanoparticle emission characteristics from a wall-guided direct-injection (DI) spark ignition engine for gasoline and liquefied petroleum gas (LPG).  Researchers reworked a returnless gasoline direct-injection (GDI) fuel supply system for the return-type liquid-phase LPG injection fuel supply system.
Nanoparticle concentrations obtained with a differential mobility spectrometer and the total hydrocarbon and nitrogen oxide emission levels were compared with those of a gasoline-fuelled engine to verify the clean combustion characteristics of the LPG DI engine. The maximum performance and the part-load combustion phenomena of the two fuels were evaluated.  The nanoparticle and exhaust emissions of the LPG DI engine were much lower than those of the GDI engine.
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