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Energies 2016, 9(1), 28;

Effects of Oxygen Content of Fuels on Combustion and Emissions of Diesel Engines

Ford Motor Company, Dunton Technical Centre, Basildon SS15 6EE, UK
Key State Lab of Engines, Tianjin University, Tianjin 300072, China
School of Engineering and Technology, University of Hertfordshire, Hatfield AL10 9AB, UK
School of Engineering and Design, Brunel University, Uxbridge UB8 3PH, UK
Department of Mechanical Engineering, University College London, London WC1E 6BT, UK
This paper is an extended version of our paper published in the 12th International Conference on Combustion and Energy Utilisation, Lancaster, UK, 29 September–3 October 2014.
Author to whom correspondence should be addressed.
Academic Editor: Chang Sik Lee
Received: 22 October 2015 / Revised: 21 December 2015 / Accepted: 28 December 2015 / Published: 5 January 2016
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Effects of oxygen content of fuels on combustion characteristics and emissions were investigated on both an optical single cylinder direct injection (DI) diesel engine and a multi-cylinder engine. Three fuels were derived from conventional diesel fuel (Finnish City diesel summer grade) by blending Rapeseed Methyl Ester (RME) or Diglyme and Butyl-Diglyme of different quantities to make their oxygen content 3%, 3% and 9%, respectively. The experimental results with three tested fuels show that the fuel spray development was not affected apparently by the oxygenating. Compared with the base fuel, the ignition delay to pilot injection was shortened by 0%, 11% and 19% for three oxygenated fuels, respectively. The ignition delay to main injection was shortened by 10%, 19% and 38%, respectively. With regard to emissions, the smoke level was reduced by 24% to 90%, depending on fuel properties and engine running conditions. The penalties of increased NOx emissions and fuel consumption were up to 19% and 24%, respectively. View Full-Text
Keywords: oxygenated fuel; oxygen content; diesel fuel; NOx emissions; smoke oxygenated fuel; oxygen content; diesel fuel; NOx emissions; smoke

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Song, H.; Quinton, K.S.; Peng, Z.; Zhao, H.; Ladommatos, N. Effects of Oxygen Content of Fuels on Combustion and Emissions of Diesel Engines. Energies 2016, 9, 28.

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