Combustion and emissions of a DI diesel engine fuelled with diesel-oxygenate blends

Yi Ren, Zuohua Huang, Haiyan Miao, Yage Di, Deming Jiang, Ke Zeng, Bing Liu, Xibin Wang

Research output: Contribution to journalArticlepeer-review

263 Citations (Scopus)

Abstract

Combustion and emissions of a DI diesel engine fuelled with diesel-oxygenate blends were investigated. The results show that there exist the different behaviors in the combustion between the diesel-diglyme blends and the other five diesel-oxygenate blends as the diglyme has the higher cetane number than that of diesel fuel while the other five oxygenates have the lower cetane number than that of diesel fuel. The smoke concentration decreases regardless of the types of oxygenate additives, and the smoke decreases with the increase of the oxygen mass fraction in the blends without increasing the NOx and engine thermal efficiency. The reduction of smoke is strongly related to the oxygen-content of blends. CO and HC concentrations decrease with the increase of oxygen mass fraction in the blends. Unlike conventional diesel engines fueled with pure diesel fuel, engine operating on the diesel-oxygenate blends presents a flat NOx/Smoke tradeoff curve versus oxygen mass fraction.

Original languageEnglish
Pages (from-to)2691-2697
Number of pages7
JournalFuel
Volume87
Issue number12
Early online date14 Mar 2008
DOIs
Publication statusPublished - 1 Sep 2008
Externally publishedYes

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