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Experimental Investigation of a Diesel Engine Operating on Natural Gas / Diesel Dual-Fuel Mode
Technical Paper
2011-36-0351
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
A four-cylinder turbocharged diesel engine was operated with natural gas and pilot diesel fuel ignition over a wide range of load and speed. The influences of different diesel-gas substitution ratios and air restrictions were evaluated regarding the characteristic parameters of combustion, performance and emissions. Based on data from the pressure-crank angle diagram, it was possible to evaluate some combustion characteristics such as the start of combustion, the maximum rate of pressure rise and the peak pressure. The parameters of the engine performance and emissions were analyzed through the brake specific fuel consumption (BSFC), unburned hydrocarbons (HC), carbon monoxide (CO) and nitrogen oxides (NOX). The results show that the increase of substitution ratio increase the maximum rate of pressure rise and the peak pressure at higher loads, but decrease at lower loads. With the air restriction, decrease the peak pressure. The results also show that the substitution ratio and air restriction dominate the performance and pollutant emissions of a dual-fuel engine. With the increase of substitution ratio, BSFC and emissions of HC and CO were increased, while NOX was decreased. Only at higher loads the BSFC was slightly reduced with the increase of natural gas mass in cylinder. With the air restriction, BSFC, HC and CO were decreased, while NOX was increased.
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Egúsquiza, J., Braga, S., and Braga, C., "Experimental Investigation of a Diesel Engine Operating on Natural Gas / Diesel Dual-Fuel Mode," SAE Technical Paper 2011-36-0351, 2011, https://doi.org/10.4271/2011-36-0351.Also In
References
- Kusaka, J. Okamoto, T. Daisho, Y. Kihara, R. Saito, T. Combustion and Exhaust Gas Emission Characteristics of a Diesel Engine Dual-Fueled with Natural Gas JSAE 21 489 496 2000
- Badr, O. Karim, G.A. Liu, B. An Examination of the Flame Spread Limits in a Dual Fuel Engine Applied Thermal Engineering 19 107 1080 1999
- Elliott, M.A. Davis, R.F. Dual Fuel Combustion in Diesel Engine Ind. and Eng. Chem. 43 12 1951
- Tesarek, H. Investigations Concerning the Employment Possibilities of Diesel-Gas Process for Reducing Exhaust Emissions, Especially Soot (Particulate Matters) SAE Paper 750158 1970
- Karim, G.A. A Review of Combustion Processes in the Dual Fuel Engine - The Gas Diesel Engine Prog. Energy Combust. Sci 6 277 285 1980
- Ding, X. Hill, P.G. Emissions and Fuel Economy of a Prechamber Diesel Engine with Natural Gas Dual Fuelling SAE Paper 860069 1986
- Egúsquiza, J.C.C. Experimental Investigation of a Diesel Cycle Engine Operating on Dual-Fuel Mode: Diesel / Ethanol and Diesel / Gas (In Portuguese) Ph.D. Thesis Pontifical Catholic University of Rio de Janeiro RJ, Brazil 168 2011
- Liu, Z. Karim, G.A. Simulation of the combustion processes in gas fuelled diesel engines Proceedings - Inst. of Mech. Engineers, J. of Power and Energy 211 159 171 1997
- Selim, M.Y.E. Pressure-Time Characteristics in Diesel Engine Fueled with Natural Gas Renewable Energy 22 473 489 2001
- Egúsquiza, J.C.E. Reduction of Reduction of the Emissions in Gas-Diesel Engines Dissertation Pontifical Catholic University of Rio de Janeiro RJ, Brazil 145 2006
- Majewsky, W.A. Khair, M.K. Diesel Emissions and their Control SAE International 2006
- Kouremenos, D.A. Hountalas, D.T. Kouremenos, A.D. Experimental Investigation of the Effect of Fuel Composition on the Formation of Pollutants in Direct Injection Diesel Engines SAE Paper 1999-01-0527 1999
- Egúsquiza, J.C.C. Braga, S.L. Braga, C.V.M. Performance and Gaseous Emissions Characteristics Of A Natural Gas/Diesel Dual Fuel Turbocharged And Aftercooled Engine ABCM, J. of the Braz. Soc. of Mech. Sci. & Eng. XXXI 2 142 150 2009