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Numerical Simulation of the Soot and NOx Formations in a Biodiesel-Fuelled Engine
ISSN: 0148-7191, e-ISSN: 2688-3627
Published April 12, 2011 by SAE International in United States
Annotation ability available
The importance of using biodiesel as an alternative in diesel engines has been demonstrated previously. A reduction in the soot, CO and HC emissions and an increase in the NO
emission burning biodiesel fuels were reported consistently in previous technical papers. However, a widely accepted NO
formation mechanism for biodiesel-fueled engines is currently lacking. As a result, in past multi-dimensional simulation studies, the NO
emission of biodiesel combustion was predicted unsatisfactorily. In this study, the interaction between the soot and NO
formations is considered during the prediction of the soot and NO
emissions in a biodiesel-fueled engine. Meanwhile, a three-step soot model and an eight NO
model which includes both the thermal NO mechanism and prompt mechanism are implemented. To simulate biodiesel combustion, a biodiesel combustion model containing 56 species and 158 reactions is currently developed based on an existing reduced model which consists of 53 species and 156 reactions. The results show that the predicted in-cylinder pressure using the current combustion model matches well with the experimental measurements. The ignition delay of the biodiesel combustion is also satisfactorily predicted using the current biodiesel combustion model. It is found that an increase in the soot formation leads to a reduction in the NO
formation as the soot formation and the prompt NO formation compete for the CH species. The results also reveal that the NO
emission is underpredicted using a NO
model without the prompt NO mechanism. The NO
emission in the biodiesel engine is acceptably predicted in this study. Moreover, the trend of the lift-off length changing versus crank angle is also reasonably predicted using the current biodiesel combustion model.
CitationRen, Y. and Li, X., "Numerical Simulation of the Soot and NOx Formations in a Biodiesel-Fuelled Engine," SAE Technical Paper 2011-01-1385, 2011, https://doi.org/10.4271/2011-01-1385.
- Tatur, M., Nanjundaswamy, H., Tomazic, D., Thornton, M. and McCormick, R., Biodiesel Effects on U.S. Light-Duty Tier 2 Engine and Emission Control Systems - Part 2,” SAE Int. J. Fuels Lubr. 2(1):88-103, 2009, doi:10.4271/2009-01-0281.
- Beatrice, C., Capaldi, P., Del Giacomo, N., Guido, C., Mancaruso, E. and Vaglieco, B., “Analysis of Impact of Diesel Fuel/Biodiesel Blends on a Modern Diesel Combustion System Performance by Means of Injection Test Rig, Optical and Real SC Engine Experiments,” SAE Technical Paper 2009-01-0484, 2009, doi:10.4271/2009-01-0484.
- Kawano, D., Ishii, H., Goto, Y., Noda, A. and Aoyagi, Y., “Optimization of Engine System for Application of Biodiesel Fuel,” SAE Technical Paper 2007-01-2028, 2007, doi:10.4271/2007-01-2028.
- McCormick, R., Tennant, C., Hayes, R., Black, S., et al., “Regulated Emissions from Biodiesel Tested in Heavy-Duty Engines Meeting 2004 Emission Standards,” SAE Technical Paper 2005-01-2200, 2005, doi:10.4271/2005-01-2200.
- A comprehensive Analysis of Biodiesel Impacts on Exhaust Emissions: Draft Technical Report. Report No. EPA420-P-02-001, US Environmental Protection Agency, October 2002.
- Cheng, A.S., Upatnieks, A., and Mueller, C.J., Investigation of the impact of biodiesel fuelling on NOx emissions using an optical direct injection diesel engine. International Journal of Engine Research, 7 (4), pp: 297-318, 2006.
- Zheng, M., Mulenga, M. C., Reader, G. T., Wang, M., Ting, D. S-K., and Tjong, J., Biodiesel Engine Performance and Emissions in Low Temperature Combustion. Fuel, 87 (6), pp: 714-722, 2008.
- Jiao, K., Sun, H., Li, X., Wu, H., Krivitzky, E., Schram, T., and Larosiliere, L. M., Numerical Simulation of Air Flow through Turbocharger Compressors with Dual Volute Design, Applied Energy, 86 (11), pp: 2494-2506, 2009.
- Jiao, K., Sun, H., Li, X., Wu, H., Krivitzky, E., Schram, T., and Larosiliere, L. M., Numerical investigation of the influence of variable diffuser vane angles on the performance of a centrifugal compressor, Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering, 223 (8), pp: 1061-1070, 2009.
- Stiesch, G., Modeling Engine Spray and Combustion Processes. Springer, Hannover, Germany, 2003.
- Kidoguchi, Y., Sanda, M., and Miwa, K., Experimental and Theoretical Optimization of Combustion Chamber and Fuel Distribution for the Low Emission Direct-Injection Diesel Engine, J. Eng. Gas Turbines, 125 (1), pp: 351-357, 2003.
- Hiroyasu, H., Hadota, T., Arai, M., Development and Use of a Spray Combustion Model to Predict Diesel Engine Efficiency and Pollutant Emissions. Part I: Combustion Modeling. Bull JSME, 214 (26), pp 569-575, 1983.
- Nagle, J., and Strickland-Constable, R.F., Oxidation of carbon between 1000-2000 C, Proc. of the Fifth Carbon Conf., 1, pp. 154, 1962.
- Fusco, A., Knox-Kelecy, A.L., Foster, D.E., Application of a Phenomenological Soot Model to Diesel Engine Combustion. 3rd Int Symp COMODIA 94, pp 315-324.
- Leung, K. M., and Lindstedt, R. P., A Simplified Reaction Mechanism for Soot Formation in Nonpremixed Flames. Combustion and Flame, 87 (3-4), pp: 289-305, 1991.
- Belardini, P., Bertoli, C., Beatrice, C., D'Anna, A. and Giacomo, N. Del. Application of a Reduced Kinetic Model for Soot Formation and Burnout in Three-dimensional Diesel Combustion Computations. Symposium (International) on Combustion 26 (2), pp: 2517-2524, 1996.
- Tao, F., Reitz, R. D., Foster, D. E., Liu, Y., Nine-step Phenomenological Diesel Soot Model Validated Over a Wide Range of Engine Conditions, International Journal of Thermal Sciences, 48 (6), pp: 1223-1234, 2009.
- Heywood, J.B., Internal Combustion Engine Fundamentals, 1988 (McGraw Hill, Inc.).
- Fenimore, C.P., Formation of Nitric Oxide in Premixed Hydrocarbon Flames, 13th Symp (Int) on Combustion, 13 (1), pp: 373-380, 1971.
- Lapuerta, M., Armas, O. and Ballesteros, R., “Diesel Particulate Emissions from Biofuels Derived from Spanish Vegetable Oils,” SAE Technical Paper 2002-01-1657, 2002, doi:10.4271/2002-01-1657.
- Wu, Y., Huang, R., Liu, Y., Leick, M. and Lee, C.F., “Effect of Ambient Temperature on Flame Lift-off and Soot Formation of Biodeiesel Sprays,” SAE Technical Paper 2010-01-0606, 2010, doi:10.4271/2010-01-0606.
- Schmidt, K. and Van Gerpen, J., “The Effect of Biodiesel Fuel Composition on Diesel Combustion and Emissions,” SAE Technical Paper 961086, 1996, doi:10.4271/961086.
- Maricq, M. Matti, Physical and chemical comparison of soot in hydrocarbon and biodiesel fuel diffusion flames: A study of model and commercial fuels, Combustion and Flame, in press, 2010.
- Wang, W. G., Lyons, D. W., Clark, N. N. and Gautam, M., Emissions from Nine Heavy Trucks Fueled by Diesel and Biodiesel Blend without Engine Modification, Environmental Science and Technology, 34, pp: 933-939, 2000.
- Brakora, J., Ra, Y., Reitz, R., Mcfarlane, J. and Daw, C., “Development and Validation of a Reduced Reaction Mechanism for Biodiesel Fueled Engine Simulations, SAE Int. J. Fuels Lubr. 1(1):675-702, 2008, doi:10.4271/2008-01-1378.
- Ren, Y., Abu-Ramadan, E. and Li, X., “Numerical Study on the Effects of Biodiesel Fuel on Combustion and Emission Characteristics in a Direct Injection Diesel Engine,” SAE Technical Paper 2010-01-1259, 2010, doi:10.4271/2010-01-1259.
- Mueller, C., Boehman, A. and Martin, G., “An Experimental Investigation of the Origin of Increased NOx Emissions When Fueling a Heavy-Duty Compression-Ignition Engine with Soy Biodiesel,” SAE Int. J. Fuels Lubr. 2(1):789-816, 2009, doi:10.4271/2009-01-1792.
- Guo, H. and Smallwood, G.J., The Interaction between Soot and NO Formation in a Laminar Axisymmetric Coflow Ethylene/air Diffusion Flame. Combustion and Flame, 149 (1-2), pp: 225-233, 2007.
- Fisher, E.M., Pitz, W. J., Curran, H. J., and Westbrook, C.K., Detailed Chemical Kinetic Mechanisms for Combustion of Oxygenated Fuels. Proceedings of the Combustion Institute, 28 (2), pp: 1579-1586, 2000.
- Warnatz, J., Critical Survey of Elementary Reaction Rate Coefficients in the C/H/O System. In: Gardiner, WC (ed) Combustion Chemistry, Springer, New York, 1984.
- Belardini, P., Bertoli, C., Beatrice, C., D'anna, A. and Giacomo, N. Del, Application of a Reduced Kinetic Model for Soot Formation and Burnout in Three-Dimensional Diesel Combustion Computations, Twenty-Sixth Symposium (International) on Combustion, 26 (2), pp: 2517-2524, 1996.
- Miller, J.A. and Bowman, C.T., Mechanism and Modeling of Nitrogen Chemistry in Combustion. Prog Energy Combust Sci. 15, pp: 287-338, 1989.
- Yakhot, V. and Smith, L.M., The renormalization group, the e-expansion and derivation of turbulence models. J. Sci. Comput., 7, 35-61, 1992.
- Han, Z. and Reitz, R.D., Turbulence Modeling of Internal Combustion Engines Using RNG κ-ε Models. Combust. Sci. and Tech., 106 (4-6), pp: 267-295, 1995.
- Launder, B.E. and Spalding, D.B., Lectures in Mathematical Models of Turbulence. 1972 (Academic Press).
- Reitz, R.D., Modeling Atomization Process in High-pressure Vaporizing sprays. Atomization and Spray Technology, 3, pp: 309-337, 1987.
- Baumgarten, C., Mixture Formation in Internal Combustion Engines. 2006 (Springer, Berlin).
- Chakravarthy, K., McFarlane, J., Daw, S., Ra, Y., et al., “Physical Properties of Bio-Diesel and Implications for Use of Bio-Diesel in Diesel Engines,” SAE Technical Paper 2007-01-4030, 2007, doi:10.4271/2007-01-4030.
- Senecal, P., Richards, K., Pomraning, E., Yang, T., et al., “A New Parallel Cut-cell Cartesian CFD Code for Rapid Grid Generation Applied to In-cylinder Diesel Engine Simulations,” SAE Technical Paper 2007-01-0159, 2007, doi:10.4271/2007-01-0159.