期刊
ENERGY
卷 163, 期 -, 页码 894-904出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.energy.2018.08.130
关键词
2-Phenylethanol; Knock; Emission; Intake pressure; Biofuel
资金
- Major Research Plan of National Natural Science Foundation of China [91641203]
- National Natural Science Foundation of China [51476114, 51706152, 51865002]
- China Postdoctoral Science Foundation [2016M590201]
- Tianjin Natural Science Foundation [17JCZDJC31500]
- Tianjin Science & Technology Supporting Program [13ZCZDGX04400]
- Guangxi Natural Science Foundation [2017GXNSFAA0198376]
The anti-knock quality of fuels are of vital importance for improving spark ignition (SI) engine efficiency. 2-pheylethanol (2-PE) is one of potential high-octane booster, which can be derived from lignin as a biomass component. To ascertain the possibility of 2-PE as a bio-additive in SI engines, combustion characteristics and emission performance of 2-PE addition were investigated in a downsized gasoline engine. Blending 2-PE in gasoline resulted to a decrease in cylinder pressure and heat release rate. As increase of 2-PE addition, ignition delay and combustion duration of 2-PE-gasoline become postponed, combustion phasing is retarded, and COVIMEP increased significantly. The reason is thought to be correlated with its relatively lower gas-phase reactivity and higher heat of vaporization. At elevated intake pressure, the number of knock cycles and MAPO significantly increased of SI engine, addition of 2-PE exhibits good knocking resistance because of its high octane number and physicochemical properties. For regulated gas emissions, 2-PE addition produces more unburned hydrocarbon, carbon oxide and less nitrogen oxides. The blending of 2-PE in gasoline tends to increase particle matter emissions and enlarge the particle size. (C) 2018 Elsevier Ltd. All rights reserved.
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