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Use of Water Emulsion and Intake Water Injection as NOx Reduction Techniques for Heavy Duty Diesel Engines
Technical Paper
2006-01-1414
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
Diesel engine manufacturers are currently intensifying their efforts to meet future emission limits that require a drastic reduction of NOx and particulate matter compared to present values. Even though several after-treatment techniques have been developed for tailpipe NOx reduction in heavy duty diesel engines, the in-cylinder control of NOx formation still remains of utmost importance. Various methods have been used to control NOx formation in diesel engines such as retarded injection timing and EGR providing each one of them very promising results. However, use of these techniques is accompanied by penalties in specific fuel consumption and exhaust soot. A promising technology for NOx reduction especially for heavy-duty diesel engines and mainly large scale ones is the addition of water to the combustion chamber to reduce peak combustion temperature that obviously affects NOx formation. This method has been applied mainly for marine and stationary diesel engines due to the requirement of minor modifications on engine infrastructure. However, up to now, its true potential for diesel engines remains uncertain due to the limited theoretical and experimental knowledge. For this reason, it is examined herein the possibility to use this method to reduce NOx emissions in direct injection heavy-duty diesel engines. Two different technologies are examined for the addition of water into the combustion chamber: use of a water-fuel emulsion or injection of water into the intake manifold. Various percentages of injected water are examined for both technologies. This is attained using a multi-zone simulation model appropriately modified to simulate the use of water/fuel emulsion or injection of water into the intake manifold. The analysis provides information concerning the actual effect of water on the combustion and pollution formation mechanisms. It is revealed a significant reduction of NOx with both techniques compared to conventional engine operation. The reduction is higher when using water-fuel emulsion compared to water injection in the intake manifold for the same water percentage. Information is derived concerning the penalty on fuel consumption, which is a dominating parameter especially in large diesel engines. Furthermore it is examined the effect of water usage on soot formation since in some cases a reduction of soot can be observed due to the dissociation of water, the production of OH radicals and improvement of the air fuel mixing process. Thus, the simulation model is used to estimate the correlation between water percentage, NOx relative reduction and the associating penalty on engine bsfc and soot. The results can be utilized to define an optimum water/fuel ratio, which will provide the maximum reduction of NOx at an acceptable fuel penalty. The results of the present investigation can be used as a pilot for the application of this method on different diesel engine types and sizes.
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Authors
- D. T. Hountalas - School of Mechanical Engineering, National Technical University of Athens
- G. C. Mavropoulos - School of Mechanical Engineering, National Technical University of Athens
- T. C. Zannis - School of Mechanical Engineering, National Technical University of Athens
- S. D. Mamalis - School of Mechanical Engineering, National Technical University of Athens
Topic
Citation
Hountalas, D., Mavropoulos, G., Zannis, T., and Mamalis, S., "Use of Water Emulsion and Intake Water Injection as NOx Reduction Techniques for Heavy Duty Diesel Engines," SAE Technical Paper 2006-01-1414, 2006, https://doi.org/10.4271/2006-01-1414.Also In
References
- Benson R.S. Whitehouse N.D. Internal Combustion Engines Pergamon, Oxford 1979
- Heywood J.B. Internal Combustion Engine Fundamentals McGraw-Hill New York 1988
- Grebe U-D. Imarisio R. “Gasoline or diesel engine: the race is on!” FISITA World Automotive Congress Barcelona, Spain 2004
- Binder K. Schwarz V. “Present and future of heavy duty engine strategies for compliance to the emission legislation” Conf. on Thermo- and Fluid Dynamic Processes in Diesel Engines (THIESEL) Valencia, Spain 2002
- Hountalas D.T. “Controlling nitric oxide and soot in heavy duty diesel engines using internal measures” FISITA World Automotive Congress Barcelona, Spain 2004
- Hountalas D.T. Kouremenos D.A. Pariotis E.G. Schwarz V. Binder K.B. “Using a phenomenological multi-zone model to investigate the effect of injection rate shaping on performance and pollutants of a DI heavy duty diesel engine” SAE Paper No 2002-01-0074 2002
- Hountalas D.T. Kouremenos D.A. Mavropoulos G.C. Binder K.B. Schwarz V. “Multi-zone combustion modeling as a tool for DI diesel engine development - Application for the effect of injection pressure” SAE Paper No 2004-01-0115 2004
- Hountalas D.T. Kouremenos D.A. Binder K.B. Schwarz V. Mavropoulos G.C. “Effect of injection pressure on the performance and exhaust emissions of a heavy duty DI diesel engine” SAE Paper No 2003-01-0340 2003
- Hountalas D.T. Kouremenos D.A. Binder K.B. Raab A. Schnabel M.H. “Using advanced injection timing and EGR to improve DI diesel engine efficiency at acceptable NO and soot levels” SAE Paper No 2001-01-0199 2001
- Hountalas D.T. Mavropoulos G.C. Zannis T.C. Schwarz V. “Possibilities to achieve future emission limits for HD DI diesel engines using internal measures” SAE Paper No 2005-01-0377 2005
- Ishida M. Chen Z-L. “An analysis of the added water effect on NO formation in DI diesel engines” SAE Paper No 941691 1994
- Ishida M. Ueki H. Sakaguchi D. “Prediction of NOx reduction rate due to port water injection in a DI diesel engine” SAE Paper No 972961 1997
- “Final regulatory impact analysis: Emissions from marine diesel engines” 1999 www.epa.gov/otaq/regs/nonroad/marine/ci/fr/ria.pdf
- “Impacts of Lubrizol's PuriNOx Water/Diesel Emulsion on Exhaust Emissions from Heavy-Duty Engines” 2002
- Goldsworthy L. “Design of ship engines for reduced emissions of oxides of nitrogen” Engineering a Sustainable Future Conference Proceedings 2002 http://www.amc.edu.au/research/areas/marine.engines/shipNOx.pdf
- Deha Er I. “Overview of NOx emission controls in marine diesel engines” Energy Sources 24 319 327 2002
- Henningsen S. “Influence of the fuel injection equipment on NOx emissions and particulates on a large heavy-duty two-stroke diesel engine operating on water-in-fuel emulsion” SAE Paper No 941783 1994
- Wirbeleit F. Lehner W. Raab A. Enderle C. Binder K. “Stratified diesel fuel-water-diesel fuel injection combined with EGR - The most efficient in-cylinder NOx and PM reduction technology” SAE Paper No 972962 1997
- Song K-H. Lee Y. Litzinger T.A. “Effects of emulsified fuels on soot evolution in an optically-accessible DI diesel engine” SAE Paper No 2000-01-2794 2000
- Armas O. Ballesteros R. Martos F.J. Agudelo J.R. “Characterization of light duty diesel engine pollutant emissions using water-emulsified fuel” Fuel 84 1011 1018 2005
- Samec N. Kegl B. Dibble R.W. “”Numerical and experimental study of water/oil emulsified fuel combustion in a diesel engine” Fuel 8 1 2035 2044 2002
- Abu-Zaid M. “Performance of single cylinder direct injection diesel engine using water fuel emulsions” Energy Conversion and Management 45 697 705 2004
- De Fries T.H. Anthony J.W. Kishan S. Ullman T.L. Matthews R.D. Lewis D.J. “The Texas diesel fuels project, Part 1: Development of Txdot-specific test cycles with emphasis on a “route” technique for comparing fuel/water emulsions and conventional diesel fuels” SAE Paper No 2004-01-0090 2004
- Matthews R.D. Anthony J.W. Hall M.J. Ullman T.L. Lewis D.J. “The Texas diesel fuels project, Part 2: Comparisons of fuel consumption and emissions for a fuel/water emulsion and conventional diesel fuels” SAE Paper No 2004-01-0087 2004
- Musculus M.P. Dec J.E. Tree D.R. Ryan T.W. III Matheaus A.C. Daly D. Langer D. “Effects of water-fuel emulsions on spray and combustion processes in a heavy-duty DI diesel engine” SAE Paper No 2002-01-2892 2002
- Weber J. Peters N. Bockhorn H. Pittermann R. “Numerical simulation of the evolution of the soot particle size distribution in a DI diesel engine using an emulsified fuel of diesel-water” SAE Paper No 2004-01-1840 2004
- Ahern B. Djutrismo J. Donahue K. Haldeman C. Hynek S. Johnson K. Taylor J. Tester J. “Dramatic emissions reductions with a direct injection diesel engine burning supercritical fuel/water mixtures” SAE Paper No 2001-01-3526 2001
- Hall D. Thorne C. Goodier S. “An investigation into the effect of a diesel/water emulsion on the size and number distribution of the particulate emissions from a heavy-duty diesel engine” SAE Paper No 2003-01-3168 2003
- Bertola A. Boulouchos K. Li R. “Influence of water-diesel fuel emulsions and EGR on combustion and exhaust emissions of heavy-duty DI diesel engines equipped with common-rail injection system” SAE Paper No 2003-01-3146 2003
- Nazha M.A. Rajakaruna H. Wagstaff S.A. “The use of emulsion, water induction and EGR for controlling diesel engine emissions” SAE Paper No 2001-01-1941 2001
- Bedford F. Rutland C. Dittrich P. Raab A. Wirbeleit A. “Effects of direct water injection on DI diesel engine combustion” SAE Paper No 2000-01-2938 2000
- Kegl B. Pehan S. “Reduction of diesel engine emissions by water injection” SAE Paper No 2001-01-3259 2001
- Annand W.J.D. “Heat transfer in the cylinders of reciprocating internal combustion engines” Proc. Instn Mech. Engrs 177 973 990 1963
- Dent J.C. Derham J.A. “Air motion in a four-stroke direct injection diesel engine” Proc. Instn Mech. Engrs 188 269 280 1974
- Ramos J.I. Internal Combustion Engine Modeling Hemisphere, New York 1989
- Siebers D.L. “Liquid-phase fuel penetration in diesel sprays” SAE Paper No 980809 1998
- Borman G.L. Johnson J.H. “Unsteady vaporization histories and trajectories of fuel drops injected into swirling air” SAE Paper No. 598C , National Powerplant Meeting Philadelphia PA 1962
- Nishida K. Hiroyasu H. “Simplified three-dimensional modeling of mixture formation and combustion in a D.I. diesel engine” SAE Paper No 890269 1989
- Kadota T. Hiroyasu H. Oya H. “Spontaneous ignition delay of a fuel droplet in high pressure and high temperature gaseous environments” Bulletin JSME 19 130 1976
- Hountalas D.T. Kouremenos D.A. Sideris M. “A diagnostic method for heavy-duty diesel engines used in stationary applications” ASME Transactions, Journal of Engineering for Gas Turbines and Power 126 2004
- Vickland C.W. Strange F.M. Bell R.A. Starkman E.S. “A consideration of the high temperature thermodynamics of internal combustion engines” SAE Transactions 70 785 793 1962