The effect of triacetin as a fuel additive to waste cooking biodiesel on engine performance and exhaust emissions

Zare, Ali, Nabi, Md Nurun, Bodisco, Timothy A., Hossain, Farhad M., Rahman, Md Mahmudur, Ristovski, Zoran D., & Brown, Richard J. (2016) The effect of triacetin as a fuel additive to waste cooking biodiesel on engine performance and exhaust emissions. Fuel, 182, pp. 640-649.

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Abstract

This study investigates the effect of oxygenated fuels on engine performance and exhaust emission under a custom cycle using a fully instrumented 6-cylinder turbocharged diesel engine with a common rail injection system. A range of oxygenated fuels based on waste cooking biodiesel with triacetin as an oxygenated additive were studied. The oxygen ratio was used instead of the equivalence ratio, or air to fuel ratio, to better explain the phenomena observed during combustion. It was found that the increased oxygen ratio was associated with an increase in the friction mean effective pressure, brake specific fuel consumption, CO, HC and PN. On the other hand, mechanical efficiency, brake thermal efficiency, CO2, NOx and PM decreased with oxygen ratio. Increasing the oxygen content of the fuel was associated with a decrease in indicated power, brake power, indicated mean effective pressure, brake mean effective pressure, friction power, blow-by, CO2, CO (at higher loads), HC, PM and PN. On the other hand, the brake specific fuel consumption, brake thermal efficiency and NOx increased by using the oxygenated fuels. Also, by increasing the oxygen content, the accumulation mode count median diameter moved toward the smaller particle sizes. In addition to the oxygen content of fuel, the other physical and chemical properties of the fuels were used to interpret the behavior of the engine.

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ID Code: 96043
Item Type: Journal Article
Refereed: Yes
Keywords: Oxygen, Oxygen ratio, Blow-by, Driving cycle, Friction
DOI: 10.1016/j.fuel.2016.06.039
ISSN: 0016-2361
Divisions: Current > Schools > School of Chemistry, Physics & Mechanical Engineering
Past > QUT Faculties & Divisions > Faculty of Built Environment and Engineering
Current > QUT Faculties and Divisions > Science & Engineering Faculty
Copyright Owner: Copyright 2016 Elsevier
Copyright Statement: Licensed under the Creative Commons Attribution; Non-Commercial; No-Derivatives 4.0 International. DOI: 10.1016/j.fuel.2016.06.039
Deposited On: 04 Aug 2016 23:31
Last Modified: 25 Aug 2016 05:54

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