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Particulate Matter (PM) characteristics from compression ignition diesel engines operated by renewable fuels

Fayad, Mohammed Ali (2017)
Ph.D. thesis, University of Birmingham.

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Restricted to Repository staff only until 31 December 2018.


Diesel engine emission of particulate matter (PM) is one of the most critical issues which have a large impact on the environmental and human health. The use of renewable fuels (biodiesel and butanol blend) and aftertreatment systems in diesel engines are the main requirements for reducing and controlling the pollutant emissions. To understand the effect of alternative fuels on PM characteristics and a diesel oxidation catalyst (DOC), rapeseed oil methyl ester (RME) biodiesel and an alcohol blend (butanol-diesel blend) were used for various engine operating conditions. The results revealed that the combustion of alternative fuels produces lower emissions of unburnt hydrocarbons (UHC), carbon monoxide (CO), and PM number concentration, which enhanced the catalyst activity at lower temperatures.
Studying the effect of oxygenated fuel and fuel injection strategies on the combustion characteristics and PM characteristics, and hence the catalyst’s performance, can unveil synergies that can benefit vehicle emissions and fuel economy, as well as guide the design of the next generation of sustainable fuels. It was found that post-injection incorporation with a butanol blend produced lower PM concentration and modified the soot’s morphological parameters by reducing number of primary particles (npo), the radius of gyration (Rg), and the fractal dimension (Df).

Type of Work:Ph.D. thesis.
Supervisor(s):Tsolakis, Athanasios and Dearn, Karl
School/Faculty:Colleges (2008 onwards) > College of Engineering & Physical Sciences
Department:School of Engineering
Additional Information:

Publications resulting from research:

Fayad M.A., Herreros J.M., Martos F.J., Tsolakis A. Role of Alternative Fuels on Particulate Matter (PM) Characteristics and Influence of the Diesel Oxidation Catalyst. Environmental Science & Technology. 2015; 49(19): p. 11967-11973.

Fayad M.A., Tsolakis A., Fernández-Rodríguez D., Herreros J.M., Martos F.J., Lapuerta M. Manipulating modern diesel engine particulate emission characteristics through butanol fuel blending and fuel injection strategies for efficient diesel oxidation catalysts. Applied Energy. 2017; 190: p. 490-500.

Bogarra M., Doustdar O., Fayad M.A., Wyszynski M., Tsolakis A., Ding P., Pacek A., Martin P., Overend R., Leary S. Performance of a drop-in biofuel emulsion on a single-cylinder research diesel engine. Combustion Engines PTNSS Journal. 2016; 166 (3): P. 9-16,

Subjects:TA Engineering (General). Civil engineering (General)
Institution:University of Birmingham
ID Code:7919
This unpublished thesis/dissertation is copyright of the author and/or third parties. The intellectual property rights of the author or third parties in respect of this work are as defined by The Copyright Designs and Patents Act 1988 or as modified by any successor legislation. Any use made of information contained in this thesis/dissertation must be in accordance with that legislation and must be properly acknowledged. Further distribution or reproduction in any format is prohibited without the permission of the copyright holder.
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