Effect of n-pentanol addition on the combustion, performance and emission characteristics of a direct-injection diesel engine

被引:226
作者
Wei, Liangjie [1 ,2 ]
Cheung, C. S. [1 ]
Huang, Zuohua [2 ]
机构
[1] Hong Kong Polytech Univ, Dept Mech Engn, Kowloon, Hong Kong, Peoples R China
[2] Xi An Jiao Tong Univ, State Key Lab Multiphase Flow Power Engn, Xian 710049, Peoples R China
基金
中国国家自然科学基金;
关键词
Pentanol; Second-generation biofuel; Combustion; Gaseous emissions; Particle emissions; Diesel engine; LOW-TEMPERATURE COMBUSTION; UNREGULATED EMISSIONS; FUEL BLENDS; ETHANOL; BUTANOL; OXIDATION; REDUCTION; BIODIESEL; PROGRESS;
D O I
10.1016/j.energy.2014.03.106
中图分类号
O414.1 [热力学];
学科分类号
摘要
In this study, experiments were conducted to examine the effect of using a mixture of diesel and n-pentanol, which is one of the second-generation biofuels with comparable properties to diesel fuel, as fuel on the combustion, performance, and gaseous and particulate emissions of a naturally-aspirated, four-cylinder, direct-injection diesel engine. Three n-pentanol fractions in the fuel mixture were selected: 10, 20 and 30% by volume. Results show that, the addition of n-pentanol leads to longer ignition delay and increases the peak heat release rate in the premixed combustion phase. The brake specific fuel consumption increases with increase of n-pentanol, while the brake thermal efficiency is not affected. Regarding the gaseous emissions, n-pentanol addition results in the following consequence: (a) HC (hydrocarbon) and CO (carbon monoxide) emissions increase for 30% n-pentanol in the blended fuel at low engine load but decrease at high engine load; (b) a slight increase (maximum 8%) in NOx emissions but noticeable increase in NO2 emissions. Regarding the particulate emissions, n-pentanol is found to be very promising in terms of reducing both the mass concentration and the particulate number concentration simultaneously. (C) 2014 Elsevier Ltd. All rights reserved.
引用
收藏
页码:172 / 180
页数:9
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