Technical and environmental effects of biodiesel use in local public transport |
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| Affiliation: | 1. University of Debrecen, Faculty of Economics and Business, H-4032 Debrecen, Böszörményi Street 138, Hungary;2. Central Statistical Office, Miskolc Division, Hungary;3. University of Debrecen, Faculty of Economics, Hungary;4. University of Debrecen, Faculty of Engineering, Hungary;5. University of Szeged, Faculty of Engineering, Hungary;1. Institute of Chemistry, Technology and Metallurgy, University of Belgrade, Studentski trg 14-16, 11 000 Belgrade, Serbia;2. Faculty of Physical Chemistry, University of Belgrade, Studentski trg 12-16, 11 000 Belgrade, Serbia;1. Department of Solid State Physics, University of Debrecen, H-4002, Debrecen, P.O.Box 400, Hungary;2. Tomsk State University, Siberian Physical Technical Institute, Novosonornaya Sq. 1., Tomsk, 634050, Russia;1. Griffith School of Engineering, Gold Coast Campus, Griffith University, QLD 4222, Australia;2. School of Mechanical and Mining Engineering, The University of Queensland, Brisbane, QLD 4072, Australia;3. Advanced Composites Manufacturing Centre, School of Marine Science and Engineering, Reynolds Building, University of Plymouth, Plymouth, Devon PL4 8AA, United Kingdom |
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| Abstract: | Biodiesel use in local public transport could be especially significant in improving air quality in cities. The purpose of the experiments described in this paper was to evaluate the various (10, 20 and 50%) blends of biodiesel with diesel in the context of the engine and pollution aspects. As regards the experimental use of these findings on municipal buses, these experiments were the first reference in Hungary. The ages (15–20 years) and types of buses (Ikarus-280, Ikarus-260) used in the experiments are still common vehicles in Hungarian public transport. During our measurements, there was a significant difference between the change in fuel consumption of articulated and solo buses in traffic when compared to test bench measurements. The proportion of the engine performance reduction is nearly the same as that for biodiesel share in the blends. Most pollutants were decreasing (both at idle and full rpm), but this reduction is not directly proportional to the increase of the blending percentage. However, as for CO2, emission increase was observed in the case of idle rpm in comparison to normal diesel operation, even though this phenomenon was not due to biodiesel use, but the catalytic converter and the fact that biodiesel was used for the first time in the engine concerned. |
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| Keywords: | Biodiesel Public transport Fuel consumption Environment Bus Biofuel |
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