Effect of the addition of diglyme in diesel fuel on combustion and emissions in a compression-ignition engine

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

Research output: Contribution to journalArticlepeer-review

28 Citations (Scopus)

Abstract

Combustion and emission characteristics of a direct-injection diesel engine fueled with diesel-diglyme blends were investigated. The results show that the ignition delay and the amount of heat release in the premixed combustion phase decrease with the increase of the oxygen mass fraction in the blends. The diffusive combustion duration and the total combustion duration decrease, while the amount of heat release in the diffusive combustion phase increases with the increase of the oxygen mass fraction in the blends. The maximum mean gas temperature in the cylinder increases and the duration of the high gas temperature decreases with the increase of the oxygen mass fraction in the blends. The center of the heat-release curve moves close to the top dead center and the effective thermal efficiency increases with the increase of the oxygen mass fraction in the blends. Moreover, the smoke concentration decreases with the increase of the oxygen mass fraction in the blends. Under the high engine load, smoke decreases by 3.7% for a 1 wt % increase of the oxygen mass fraction in the blends. The NOx concentration shows a slight decrease or remains unchanged with the increase of the oxygen mass fraction in the blends.

Original languageEnglish
Pages (from-to)2573-2583
Number of pages11
JournalEnergy and Fuels
Volume21
Issue number5
Early online date17 Jul 2007
DOIs
Publication statusPublished - 1 Sep 2007
Externally publishedYes

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