Characterization of a diesel engine operating with a small proportion of methanol as a fuel additive in biodiesel blend

Mat Yasin, M. H. and Yusaf, Talal and Mamat, R. and Yusop, A. Fitri (2014) Characterization of a diesel engine operating with a small proportion of methanol as a fuel additive in biodiesel blend. Applied Energy, 114. pp. 865-873. ISSN 0306-2619

Abstract

Biodiesel has been a lucrative commodity in the current global economic trade as there is mounting concern for issues relating to the environment and oil depletion. Biodiesel has been proven to be the next alternative renewable fuel as it is environmentally friendly, sustainable and possesses similar combustion characteristics to petroleum diesel. However, due to the higher density and viscosity of biodiesel, pure biodiesel is not widely used in diesel engines. Therefore, the purpose of alcohol as a fuel additive is to improve the viscosity and density in the biodiesel blend. The focus of this study is to evaluate the performance and emissions of a small proportion of methanol (5% by volume) in a B20 blend and mineral diesel separately. A compression ignition (CI) Mitsubishi 4D68 multi-cylinder DI diesel engine was used in this work. Engine performance, combustion and exhaust emission characteristics were evaluated at two specific conditions. The first condition was an increase in engine speed from 1500rpm to 3500rpm at partial engine load and the second condition involved maintaining a constant speed of 2500rpm at three different engine loads (0.05 MPa, 0.4 MPa and 0.7 MPa). Lower brake power was noticed when operating with B20 and B20 M5 blend. However, an increase in brake specific fuel consumption (BSFC) of 4–6% was
observed when the engine was fueled with B20 and B20 M5. The results indicate that NOx emissions increase (up to 13%) while lower carbon monoxide (CO) and Carbon dioxide (CO2) (up to 17–18%) are observed in contrast with the mineral diesel.


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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Additional Information: © 2013 Elsevier B.V. Published version deposited in accordance with the copyright policy of the publisher. Published online 3 July 2013.
Faculty / Department / School: Current - Faculty of Health, Engineering and Sciences - School of Mechanical and Electrical Engineering
Date Deposited: 10 Jul 2013 01:27
Last Modified: 28 Apr 2017 04:20
Uncontrolled Keywords: biodiesel blend; combustion characteristics; diesel engine; engine performance; exhaust emission; methanol
Fields of Research : 09 Engineering > 0913 Mechanical Engineering > 091305 Energy Generation, Conversion and Storage Engineering
09 Engineering > 0913 Mechanical Engineering > 091399 Mechanical Engineering not elsewhere classified
09 Engineering > 0902 Automotive Engineering > 090201 Automotive Combustion and Fuel Engineering (incl. Alternative/Renewable Fuels)
Socio-Economic Objective: B Economic Development > 85 Energy > 8503 Preparation and Production of Energy Sources > 850309 Production of Biofuels (Biomass)
Identification Number or DOI: 10.1016/j.apenergy.2013.06.012
URI: http://eprints.usq.edu.au/id/eprint/23704

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