Combustion characteristics of a compression ignition engine fuelled with diesel—ethanol blends
Combustion characteristics of a compression ignition engine fuelled with diesel—ethanol blends
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DOI：
10.1243/09544070jauto496
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发表时间：
2008-02
期刊：
影响因子：
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通讯作者：
Wei Li;Y. Ren;X.-B. Wang;Honglei Miao;D. Jiang;Z-H Huang
中科院分区：
文献类型：
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作者：
Wei Li;Y. Ren;X.-B. Wang;Honglei Miao;D. Jiang;Z-H Huang
Combustion characteristics were analysed in a compression ignition engine fuelled with diesel—ethanol blends with and without a cetane number improver. The results show that, for the same brake mean effective pressure and engine speed, the maximum cylinder pressure Pmax, the ignition delay, the premixed combustion duration, and the fraction of heat release in premixed combustion phase will increase, while the diffusive combustion duration, the fraction of diffusive combustion phase, and the total combustion duration decrease with increase in the ethanol fraction in the blends. Meanwhile, the centre of the heat release curve moves close to the top dead centre, and the maximum rate (dQb/dφ)max of heat release and the maximum rate (dp/dφ)max of pressure rise increase with increase in the ethanol fraction in the blends. The addition of a cetane number improver is beneficial to the decrease in the ignition delay, the cylinder peak pressure, the maximum rate of pressure rise, and the combustion noise when operating on diesel—ethanol blends.
