Extending the environmental benefits of ethanol-diesel blends through DGE incorporation

Research output: Contribution to journalArticle

Authors

Colleges, School and Institutes

Abstract

The research focuses on the potential use of DGE (diethylene glycol diethyl ether), as a high-cetane number oxygenated additive to diesel-like fuels. Apart from evaluating its individual effects an investigation of how DGE can facilitate the use of bio-ethanol in diesel engines was conducted; which faces many technical difficulties, but can provide environmental advantages over biodiesel and conventional diesel fuel. Four partly renewable fuel blends with varying contents of DGE and ethanol were designed with overall diesel-replacement rate of 20%.

DGE was found to reduce gaseous emissions, achieving a simultaneous reduction in both soot and NO which highlighted the beneficial effects of its high cetane number and oxygen content. In ethanol-diesel blends small additions of DGE significantly enhanced blend stability and blend auto-ignition properties. Improvements in the NOx/soot trade-off characteristics were obtained for all blends. All tested blends produced lower particulate matter number concentrations and soot with characteristics that reduced their oxidation temperatures, hence providing benefits for diesel particulate filter (DPF) regeneration. Overall it was found that DGE fuel provides considerable energy and environmental benefits if used both as a single oxygenate with diesel or in multicomponent blends with ethanol and diesel.

Details

Original languageEnglish
Pages (from-to)335-343
Number of pages9
JournalApplied Energy
Volume146
Early online date7 Mar 2015
Publication statusPublished - 15 May 2015

Keywords

  • Diesel combustion, Ether, Ethanol blends, Soot oxidation, NOx-soot trade-off