Evaluating Oxygenated Fuel’s Influence on Combustion and Emissions in Diesel Engines Using a Two-Zone Combustion Model
Publication: Journal of Energy Engineering
Volume 144, Issue 4
Abstract
This work examines the effects of diesel fuel oxygenation on the combustion and emissions in a direct injection (DI) diesel engine. This is a predominately computational study, where the influence of the fuel oxygen content at various injection timings and loads is addressed by using an in-house, comprehensive, two-zone model of DI diesel engine combustion, which divides the cylinder contents into a nonburning zone of air and another zone in which fuel is continuously supplied from the injector and burned with entrained air from the air zone. The validity of the model results is assessed favorably against pertinent experimental data, such as cylinder pressure and heat release rate (HRR) diagrams and nitric oxide (NO) and soot emissions generated in this laboratory by conducting tests on an experimental, single-cylinder, DI Hydra (Ricardo/Cussons, Manchester, United Kingdom) diesel engine operated at two different loads and injection timings. Various degrees of oxygenation of conventional diesel fuel and various injection timings were undertaken in the theoretical study at each load. The numerical simulation results provide insight into the local combustion and emissions formation conditions. Numerical modeling determined that cylinder pressures, temperatures, and NO emissions increase, whereas soot emissions decrease with the degree of fuel oxygenation at any load, and also that cylinder pressures, temperatures, and NO emissions decrease, whereas soot emissions increase by retarding the injection timing at any load. These results are used for discussing the implications they have on the behavior of biofuels or diesel fuel blends, where the fuel-bound oxygen and ignition delay (embodied here in the injection timing variable) are the main parameters dictating their behavior. At least for the case of some common biofuels in blends with diesel fuel, it is shown that lower injection timings and higher degrees of biofuel blend oxygenation (inside limiting values) can alleviate the notorious NO–smoke trade-off with respect to a point of lower oxygenation degree lying on a higher injection timing NO–smoke curve (at any constant load).
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References
Annand, W. J. D. 1963. “Heat transfer in the cylinders of reciprocating internal combustion engines.” Proc. Inst. Mech. Eng. 177 (1): 973–996. https://doi.org/10.1243/PIME_PROC_1963_177_069_02.
Arai, M., M. Tabata, H. Hiroyasu, and M. Shimizu. 1984. Disintegration process and spray characterization of fuel jet injected by a diesel nozzle., Warrendale, PA: Society of Automotive Engineers International.
Benson, R. S., and N. D. Whitehouse. 1979. Internal combustion engines. Oxford, UK: Pergamon Press.
Butler, T. D., L. D. Cloutman, J. K. Dukovicz, and J. D. Ramshaw. 1981. “Multidimensional numerical simulation of reactive flow in internal combustion engines.” Prog. Energy Combust. Sci. 7 (4): 293–315. https://doi.org/10.1016/0360-1285(81)90003-4.
Debnath, B. K., N. Sahoo, B. J. Bora, and U. K. Saha. 2014. “Influence of emulsified palm biodiesel as a pilot fuel in a biogas run dual fuel diesel engine.” J. Energy Eng. 140 (3): A4014005. https://doi.org/10.1061/(ASCE)EY.1943-7897.0000163.
Ferguson, C. R. 1986. Internal combustion engines. New York: Wiley.
Fort, E. F., P. N. Blumberg, H. E. Staph, and J. J. Staub. 1982. Evaluation of cottonseed oils as diesel fuel. Warrendale, PA: Society of Automotive Engineers International.
Giakoumis, E. G., C. D. Rakopoulos, A. M. Dimaratos, and D. C. Rakopoulos. 2012. “Exhaust emissions of diesel engines operating under transient conditions with biodiesel fuel blends.” Prog. Energy Combust. Sci. 38 (5): 691–715. https://doi.org/10.1016/j.pecs.2012.05.002.
Gosman, A. D., and P. S. Harvey. 1982. Computer analysis of fuel-air mixing and combustion in axisymmetric D.I. diesel engine. Warrendale, PA: Society of Automotive Engineers International.
Heywood, J. B. 1988. Internal combustion engine fundamentals. New York: McGraw-Hill.
Hiroyasu, H., T. Kadota, and M. Arai. 1983. “Development and use of a spray combustion modeling to predict diesel engine efficiency and pollutant emissions.” Bull. Japan Soc. Mech. Eng. 26 (214): 569–575. https://doi.org/10.1299/jsme1958.26.569.
Hodgetts, D., and H. D. Shroff. 1975. “More on the formation of nitric oxide in a diesel engine.” Combustion in Engines, Inst. Mech. Eng. 95 (75): 129–138.
Inal, F., and S. M. Senkan. 2002. “Effects of oxygenate additive on polycyclic aromatic hydrocarbons (PAHs) and soot formation.” Combust. Sci. Technol. 174 (9): 1–19. https://doi.org/10.1080/00102200290021353.
Jin, C., M. Yao, H. Liu, C. F. Lee, and J. Ji. 2011. “Progress in the production and application of n-butanol as a biofuel.” Renewable Sustainable Energy Rev. 15 (8): 4080–4106. https://doi.org/10.1016/j.rser.2011.06.001.
Khalil, N., Y. A. Levendis, and R. F. Abrams. 1995. Reducing diesel particulate and NOx emissions via filtration and particle-free exhaust gas recirculation. Warrendale, PA: Society of Automotive Engineers International.
Khan, I. M., G. Greeves, and D. M. Probert. 1971. “Prediction of soot and nitric oxide concentrations in diesel engine exhaust.” Air Pollution Control Transp. Eng. 142 (71): 205–217.
Khan, I. M., C. H. T. Wang, and B. E. Langridge. 1972. Effect of air swirl on smoke and gaseous emissions from direct-injection diesel engines. Warrendale, PA: Society of Automotive Engineers International.
Kosmadakis, G. M., F. Moreno, J. Arroyo, M. Munoz, and C. D. Rakopoulos. 2016. “Combustion analysis of a spark-ignition engine fueled on methane-hydrogen blend with variable equivalence ratio using a computational fluid dynamics code.” J. Energy Eng. 142 (2): E4015002. https://doi.org/10.1061/(ASCE)EY.1943-7897.0000300.
Kumar, B. R., S. Saravanan, R. N. Kumar, B. Nishanth, D. Rana, and A. Nagendran. 2016. “Effect of lignin-derived cyclohexanol on combustion, performance and emissions of a direct-injection agricultural diesel engine under naturally aspirated and exhaust gas recirculation (EGR) modes.” Fuel 181: 630–642. https://doi.org/10.1016/j.fuel.2016.05.052.
Labeckas, G., S. Slavinskas, and I. Kanapkiene. 2017. “The individual effects of cetane number, oxygen content or fuel properties on performance, efficiency, exhaust smoke and emissions of a turbocharged CRDI diesel engine—Part 2.” Energy Convers. Manage. 149: 442–466. https://doi.org/10.1016/j.enconman.2017.07.017.
Labeckas, G., S. Slavinskas, and V. Vilutiene. 2015. “Effect of the cetane number improving additive on combustion, performance, and emissions of a DI diesel engine operating on JP-8 fuel.” J. Energy Eng. 142 (2): C4014005. https://doi.org/10.1061/(ASCE)EY.1943-7897.0000222.
Lavoie, G. A., J. B. Heywood, and J. C. Keck. 1970. “Experimental and theoretical study of nitric oxide formation in internal combustion engines.” Combust. Sci. Technol. 1 (4): 313–326. https://doi.org/10.1080/00102206908952211.
Lipkea, W. H., and A. D. DeJoode. 1994 Direct injection diesel engine soot modeling: Formulation and results. Warrendale, PA: Society of Automotive Engineers International.
Merola, S. S., A. Irimescu, C. Tornatore, and G. Valentino. 2016. “Effect of the fuel-injection strategy on flame-front evolution in an optical wall-guided DISI engine with gasoline and butanol fueling.” J. Energy Eng. 142 (2): E4015004. https://doi.org/10.1061/(ASCE)EY.1943-7897.0000301.
Miyamoto, N., H. Ogawa, and M. N. Nabi. 2000. “Approaches to extremely low emissions and efficient diesel combustion with oxygenated fuels.” Int. J. Engine Res. 1 (1): 71–85. https://doi.org/10.1243/1468087001545272.
Papagiannakis, R. G., D. C. Rakopoulos, and C. D. Rakopoulos. 2017. “Theoretical study of the effects of spark timing on the performance and emissions of a light-duty spark ignited engine running under either gasoline or ethanol or butanol fuel operating modes.” Energies. 10 (8): 1198. https://doi.org/10.3390/en10081198.
Pariotis, E. G., D. T. Hountalas, and C. D. Rakopoulos. 2005. Modeling the effects of EGR on a heavy duty DI diesel engine using a new quasi-dimensional combustion model. Warrendale, PA: Society of Automotive Engineers International.
Rakopoulos, C. D., K. A Antonopoulos, and D. C. Rakopoulos. 2006a. “Multi-zone modeling of diesel engine fuel spray development with vegetable oil, bio-diesel or diesel fuels.” Energy Convers. Manage. 47 (11–12): 1550–1573. https://doi.org/10.1016/j.enconman.2005.08.005.
Rakopoulos, C. D., K. A. Antonopoulos, and D. C. Rakopoulos. 2007a. “Development and application of a multi-zone model for combustion and pollutants formation in a direct injection diesel engine running with vegetable oil or its bio-diesel.” Energy Convers. Manage. 48 (7): 1881–1901. https://doi.org/10.1016/j.enconman.2007.01.026.
Rakopoulos, C. D., K. A. Antonopoulos, and D. C. Rakopoulos. 2007b. “Experimental heat release analysis and emissions of a HSDI diesel engine fueled with ethanol-diesel fuel blends.” Energy 32 (10): 1791–1808. https://doi.org/10.1016/j.energy.2007.03.005.
Rakopoulos, C. D., K. A. Antonopoulos, D. C. Rakopoulos, D. T. Hountalas, and E. G. Giakoumis. 2006b. “Comparative performance and emissions study of a direct injection diesel engine using blends of diesel fuel with vegetable oils or bio-diesels of various origins.” Energy Convers. Manage. 47 (18–19): 3272–3287. https://doi.org/10.1016/j.enconman.2006.01.006.
Rakopoulos, C. D., and E. G. Giakoumis. 2009. Diesel engine transient operation: Principles of operation and simulation analysis. London: Springer.
Rakopoulos, C. D., E. G. Giakoumis, D. T. Hountalas, and D. C. Rakopoulos. 2004a. The effect of various dynamic, thermodynamic and design parameters on the performance of a turbocharged diesel engine operating under transient load conditions. Warrendale, PA: Society of Automotive Engineers International.
Rakopoulos, C. D., D. T. Hountalas, T. C. Zannis, and Y. A. Levendis. 2004b. Operational and environmental evaluation of diesel engines burning oxygen-enriched air or oxygen-enriched fuels: A review. Warrendale, PA: Society of Automotive Engineers International.
Rakopoulos, C. D., D. C. Kyritsis, and D. C. Rakopoulos. 2014a. “Special issue on innovative technologies on combustion of biofuels in engines: Issues and challenges.” J. Energy Eng. 140 (3): A2014001. https://doi.org/10.1061/(ASCE)EY.1943-7897.0000193.
Rakopoulos, C. D., and G. C. Mavropoulos. 2000. “Experimental instantaneous heat fluxes in the cylinder head and exhaust manifold of an air-cooled diesel engine.” Energy Convers. Manage. 41 (12): 1265–1281. https://doi.org/10.1016/S0196-8904(99)00179-X.
Rakopoulos, C. D., C. N. Michos, and E. G. Giakoumis. 2008. “Availability analysis of a syngas fueled spark ignition engine using a multi-zone combustion model.” Energy 33 (9): 1378–1398. https://doi.org/10.1016/j.energy.2008.05.007.
Rakopoulos, C. D., D. C. Rakopoulos, E. G. Giakoumis, and D. C. Kyritsis. 2004c. “Validation and sensitivity analysis of a two zone diesel engine model for combustion and emissions prediction.” Energy Convers. Manage. 45 (9–10): 1471–1495. https://doi.org/10.1016/j.enconman.2003.09.012.
Rakopoulos, C. D., D. C. Rakopoulos, E. G. Giakoumis, and D. C. Kyritsis. 2011. “The combustion of n-butanol/diesel fuel blends and its cyclic variability in a DI diesel engine.” Proc. Inst. Mech. Eng. Part A: J. Power Energy 225 (3): 289–308. https://doi.org/10.1177/2041296710394256.
Rakopoulos, C. D., D. C. Rakopoulos, and D. C. Kyritsis. 2003. “Development and validation of a comprehensive two-zone model for combustion and emissions formation in a DI diesel engine.” Int. J. Energy Res. 27 (14): 1221–1249. https://doi.org/10.1002/er.939.
Rakopoulos, C. D., D. C. Rakopoulos, G. C. Mavropoulos, and E. G. Giakoumis. 2004d. “Experimental and theoretical study of the short term response temperature transients in the cylinder walls of a diesel engine at various operating conditions.” Appl. Thermal Eng. 24 (5–6): 679–702. https://doi.org/10.1016/j.applthermaleng.2003.11.002.
Rakopoulos, D. C., C. D. Rakopoulos, and E. G. Giakoumis. 2015. “Impact of properties of vegetable oil, bio-diesel, ethanol and n-butanol on the combustion and emissions of turbocharged HDDI diesel engine operating under steady and transient conditions.” Fuel 156: 1–19. https://doi.org/10.1016/j.fuel.2015.04.021.
Rakopoulos, D. C., C. D. Rakopoulos, E. G. Giakoumis, R. G. Papagiannakis, and D. C. Kyritsis. 2014b. “Influence of properties of various common bio-fuels on the combustion and emission characteristics of high-speed DI (direct injection) diesel engine: Vegetable oil, bio-diesel, ethanol, n-butanol, diethyl ether.” Energy 73: 354–366. https://doi.org/10.1016/j.energy.2014.06.032.
Rakopoulos, D. C., C. D. Rakopoulos, and D. C. Kyritsis. 2016. “Butanol or DEE blends with either straight vegetable oil or biodiesel excluding fossil fuel: Comparative effects on diesel engine combustion attributes, cyclic variability and regulated emissions trade-off.” Energy 115: 314–325. https://doi.org/10.1016/j.energy.2016.09.022.
Reitz, R. D. 2013. “Directions in internal combustion engine research.” Combust. Flame 160 (1): 1–8. https://doi.org/10.1016/j.combustflame.2012.11.002.
Shahed, S. M., W. S. Chiu, and W. T. Lyn. 1975. “A mathematical model of diesel combustion.” Proc. Inst. Mech. Eng. 94 (75): 119–128.
Valentino, G., S. E. Iannuzzi, L. Marchitto, S. S. Merola, and C. Tornatore. 2014. “Optical investigation of post injection strategy effect at the exhaust line of a light-duty diesel engine supplied with diesel/butanol and biodiesel blends.” J. Energy Eng. 140 (3): A4014010. https://doi.org/10.1061/(ASCE)EY.1943-7897.0000155.
Watson, N., and M. S. Janota. 1982. Turbocharging the internal combustion engine. London: MacMillan.
Way, R. J. B. 1976. “Methods for determination of composition and thermodynamic properties of combustion products for internal combustion engine calculations.” Proc. Inst. Mech. Eng. 190 (1): 687–697. https://doi.org/10.1243/PIME_PROC_1976_190_073_02.
Whitehouse, N. D., and B. K. Sareen. 1974. Prediction of heat release in a quiescent chamber diesel engine allowing for fuel/air mixing. Warrendale, PA: Society of Automotive Engineers International.
Whitehouse, N. D., and R. J. B. Way. 1969. “Rate of heat release in diesel engines and its correlation with fuel injection data.” Proc. Inst. Mech. Eng. 184 (10): 17–27. https://doi.org/10.1243/PIME_CONF_1969_184_315_02.
Whitehouse, N. D., and R. J. B. Way. 1971. A simple method for the calculation of heat release rates in diesel engines based on the fuel injection rate. Warrendale, PA: Society of Automotive Engineers International.
Zannis, T. C., D. T. Hountalas, and C. D. Rakopoulos. 2004. Theoretical study concerning the effect of oxygenated fuels on DI diesel engine performance and emissions. Warrendale, PA: Society of Automotive Engineers International.
Zannis, T. C., E. G. Pariotis, D. T. Hountalas, D. C. Rakopoulos, and Y. A. Levendis. 2007. “Theoretical study of DI diesel engine performance and pollutant emissions using comparable air-side and fuel-side oxygen addition.” Energy Convers. Manage. 48 (11): 2962–2970. https://doi.org/10.1016/j.enconman.2007.07.007.
Zeldovich, Y., P. Y. Sadovnikov, and D. A. Frank-Kamenetskii. 1947. Oxidation of nitrogen in combustion. Translated by M. Shelef. Leningrad, Russia: Academy of Sciences of USSR, Institute of Chemical Physics.
Zhang, W., Z. Chen, W. Li, G. Shu, B. Xu, and Y. Shen. 2013. “Influence of EGR and oxygen-enriched air on diesel engine NO-Smoke emission and combustion characteristic.” Appl. Energy 107: 304–314. https://doi.org/10.1016/j.apenergy.2013.02.024.
Zheng, Z., F. Dong, Y. Guo, X. Liu, Y. Yang, and H. Liu. 2017. “Effect of fuels with different distillation temperatures on performance and emissions of a diesel engine run at various injection pressures and timings.” J. Energy Eng. 143 (3): 04016061. https://doi.org/10.1061/(ASCE)EY.1943-7897.0000413.
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Journal of Energy Engineering
Volume 144 • Issue 4 • August 2018
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©2018 American Society of Civil Engineers.
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Received: Dec 1, 2017
Accepted: Jan 31, 2018
Published online: Jun 9, 2018
Published in print: Aug 1, 2018
Discussion open until: Nov 9, 2018
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