The effect of rapeseed oil blending with ethanol on engine performance and exhaust emissions

• Autorzy: Labeckas G. , Slavinskas S. , Pauliukas A.
• Języki publikacji: EN

Abstrakty

EN

The article presents the bench testing results of a four stroke, four cylinder, direct injection, unmodified, naturally aspirated diesel engine operating on neat rapeseed oil (RO) and its 2.5vol% (ERO2.5) and 7.5vol percent (ERO7.5) blends with ethanol. The purpose of the research was to investigate the effect of ethanol inclusion in the RO and preheating temperature on bio-fuel viscosity, engine brake power, specific fuel consumption, break thermal efficiency and emission composition changes, especially NO, NO2, NOx, CO, CO2, HC and smoke opacity of the exhausts. Inclusion in the RO 2.5 and 7.5vol% of ethanol the blend viscosity at ambient temperature of 20 centigrade diminishes by 9.2 and 28.3%. During operation under constant air-to-fuel equivalence ratio gamma = 1.6, blends ERO2.5 and ERO7.5 ensure the brake mean effective pressure (bmep) lower at the maximum torque 1800 min-1 by 0.5 and 2.3% (bmep=0.770 mpa) and at rated 2200 min1 speed by 2.4 and 9.1% (bmep=0.740 mpa), correspondingly, than that of neat RO case. The bsfc at maximum torque (248.7 g/kwh) and rated power (247.5 g/kwh) for blends ERO2.5 and ERO7.5 is higher by 1.3-4.4% and 4.2-10.7% and the brake thermal efficiency lower by 0.5-1.5% and 3.3-7.6%, respectively. The tests revealed that during operation of the fully loaded engine at rated 2200 min-1 speed, ethanol inclusion in the RO up to 7.5vol% diminishes NO, nox, HC, CO2 emissions, smoke opacity and temperature of the exhausts however it may increase simultaneously NO2, NO2/NOx and CO emissions.

Słowa kluczowe

EN

diesel engine; rapeseed oil (RO); ethanol; effective parameters; emissions; smoke opacity

• Wydawca: Łukasiewicz Research Network - Institute of Aviation ; European Science Society of Powertrain and Transport KONES Poland ; Wydawnictwo Instytutu Technicznego Wojsk Lotniczych
• Czasopismo: Journal of KONES
• Rocznik: 2007
• Tom: Vol. 14, No. 3
• Strony: 331--338
• Opis fizyczny: Bibliogr. 12 poz., rys.

Twórcy

autor

Labeckas G.

autor

Slavinskas S.

autor

Pauliukas A.

• Lithuanian University of Agriculture, Engineering Faculty Transport and Power Machinery Department Student Str. 11, P.O. Box LT-53361, Kaunas Academy, Lithuania fax/call: [phone],

Bibliografia

• [1] Demirbas, M. F., Balat, M., Recent advances on the production and utilization trends of biodiesel: A global perspective, Energy Conversion and Management, Vol. 47, Issue 15-16, p. 2371-2381, 2006.
• [2] Graboski, M. S., McCormick, R. L., Combustion of Fat and Vegetable Oil Derived Fuels in Diesel Engines, Progress in Energy and Combustion. Scientific. Vol. 24 p. 125-164, Elsevier Science Ltd, 1998.
• [3] Hansen, A. C., Gratton M. R., Yuan, W., Diesel engine performance and NOx emissions from oxygenated biofuels and blends with Diesel fuel. Transactions of the ASABE, Vol. 49(3) p. 589-595, 2006.
• [4] Heywood, J. B., Internal Combustion Engine Fundamentals, Co - Singapore for manufacture and export (International edition) 930 p.1988.
• [5] Labeckas, G., Slavinskas, S., The effect of rapeseed oil methyl ester on direct injection Diesel engine performance and exhaust emissions, Energy Conversion and Management, Vol. 47, Issues 13-14, p. 1954-1967, 2006.
• [6] Labeckas, G., Slavinskas, S., Performance of direct-injection off-road Diesel engine on rapeseed oil. Renewable Energy, Vol. 31, Nr. 6, p. 849-863, 2006.
• [7] Labeckas, G., Slavinskas, S., Performance and exhaust emissions of direct-injection Diesel engine operating on rapeseed oil and its blends with Diesel fuel, TRANSPORT: Journal of Vilnius Gediminas Technical University and Lithuanian Academy of Sciences, Vol. 20, nr 5, p. 186-194, 2005.
• [8] Lotko, W, Lukanin, V. N., Khatchiyan, A. S., Usage of Alternative Fuels in Internal Combustion Engines, Moscow: MADI, 311 p. (in Russian), 2000.
• [9] Saveljev, G., Alternative fuels in agricultural sector, Alternative fuel, nr 1 (25), p. 64-70 (in Russian), 2006.
• [10] [10] Tat, M. E., Gerpen, J. H. V., Fuel Property Effects on Injection Timing, Ignition Timing and Oxides of Nitrogen Emissions from Biodiesel-Fueled Engines, Paper Number: 046081. An ASAE Annual International Meeting Presentation, Ottawa, Ontario, Canada, 1-4 August, 2004.
• [11] Yasufumi, Yoshimoto, Masayuki, Onodera, Performance of a Diesel Engine Fuelled by Rapeseed oil Blended with Oxygenated Organic Compounds, SAE Technical Paper Series 2002-01-2854, p. 9. 2002.
• [12] Yuan, W., Gratten, M. R., Hansen, A. C.,. Parametric Investigation of NOx Emissions from Biofuels for Compression-Ignition Engines, An ASAE Annual International Meeting Presentation, Tampa, Florida, USA, p. 21, 17-20 July 2005.