Effects of fuel properties on low temperature combustion processes and emissions of diesel engines

被引：0

作者：

Si, Peng-Kun ^{[1
,2
]}

Liu, Hai-Feng ^{[1
]}

Wang, Hai ^{[1
]}

Kong, Ling-Cun ^{[1
]}

Li, Shan-Ju ^{[1
]}

Zheng, Zun-Qing ^{[1
]}

机构：

[1] State Key Laboratory of Engines, Tianjin University, Tianjin 300072, China

[2] Automotive Engineering Department, Chengde Petroleum College, Chengde 067000, China

来源：

Neiranji Xuebao/Transactions of CSICE (Chinese Society for Internal Combustion Engines) | 2014年 / 32卷 / 01期

关键词：

Combustion - Heptane - Blending - Temperature - Diesel fuels - Nitrogen oxides - Soot;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

Effects of fuel physical and chemical properties on low temperature combustion (LTC) mechanism and regulated/unregulated emissions were studied on a diesel engine. Fuels were prepared by adding the blend with 20% n-heptane, PRF50, iso-octane and 40% n-heptane by volume into the diesel fuel. Results show that cetane number has large effect on the ignition delay at higher EGR rate. With the decrease of cetane number, the soot emissions are decreased. Changes in fuel physical and chemical properties have little effect on combustion and soot emissions at 20% blending ratio. At higher blending ratio (40% by volume), soot emisions can further be decreased. Under LTC conditions, THC emissions increase where methane is the main compostion of THC and accounts 60% in the total HC. NO2, has little effect on NOx emissions control. At 20% blending ratio, fuel properties has small effect on THC, other unregulated HC, CO and NOx emissions. At 40% blending ratio, aromatic emission is decreased but NOx and NO2 emissions are increased.

引用

页码：6 / 13