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An Investigation on the Regeneration of Lean NOx Trap Using Ethanol and n-Butanol
Technical Paper
2019-01-0737
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
Reduction of nitrogen oxides (NOx) in lean burn and diesel fueled Compression Ignition (CI) engines is one of the major challenges faced by automotive manufacturers. Lean NOx Trap (LNT) and urea-based Selective Catalytic Reduction (SCR) exhaust after-treatment systems are well established technologies to reduce NOx emissions. However, each of these technologies has associated advantages and disadvantages for use over a wide range of engine operating conditions. In order to meet future ultra-low NOx emission norms, the use of both alternative fuels and advanced after-treatment technology may be required. The use of an alcohol fuel such as n-butanol or ethanol in a CI engine can reduce the engine-out NOx and soot emissions. In CI engines using LNTs for NOx reduction, the fuel such as diesel is utilized as a reductant for LNT regeneration. In the present work, a detailed evaluation of the performance of long breathing LNT (requiring fewer regenerations than conventional LNT) is carried out using ethanol and n-butanol as the reductants and are compared with diesel as the reductant. For this purpose, a long breathing LNT catalyst is examined on a flow bench under simulated exhaust conditions. The NOx adsorption period is decoupled from regeneration, and reductant quantities are varied at 3% and 8.5% oxygen concentration. Ethanol and n-butanol are found to be more effective as reductants compared to diesel in terms of NOx conversion and hydrogen yield during the LNT regeneration at the tested conditions. In order to further understand the impact of using ethanol and n-butanol, the formation of different hydrocarbon species due to reforming on the Diesel Oxidation Catalyst (DOC) and LNT catalyst has been studied as well.
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Purohit, D., Dev, S., Tan, Q., Sandhu, N. et al., "An Investigation on the Regeneration of Lean NOx Trap Using Ethanol and n-Butanol," SAE Technical Paper 2019-01-0737, 2019, https://doi.org/10.4271/2019-01-0737.Data Sets - Support Documents
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References
- Heywood , J.B. Internal Combustion Engine Fundamentals Singapore McGraw-Hill 1988
- Yanai , T. , Dev , S. , Han , X. , Zheng , M. et al. Impact of Fuelling Techniques on Neat N-Butanol Combustion and Emissions in a Compression Ignition Engine SAE International Journal of Engines 8 2 735 746 2015 10.4271/2015-01-0808
- Gao , T. , Divekar , P. , Asad , U. , Han , X. et al. An Enabling Study of Low Temperature Combustion with Ethanol in a Diesel Engine J. Energy Resour. Technol 135 4 042203 042203-8 2013 10.1115/1.4024027
- Han , X. , Xie , K. , Tjong , J. , and Zheng , M. Empirical Study of Simultaneously Low NOx and Soot Combustion with Diesel and Ethanol Fuels in Diesel Engine J. Eng. Gas Turbines Power 134 11 112802 112802-7 2012 10.1115/1.4007163
- Xie , K. , Yanai , T. , Yang , Z. , Reader , G. et al. Emission Analysis of HCCI Combustion in a Diesel Engine Fueled by Butanol SAE Technical Paper 2016-01-0749 2016 10.4271/2016-01-0749
- Maunula , T. Combination of LNT and SCR for NOx Reduction in Passenger Car Applications Combustion Engines R 53 2 2014
- Jeftic , M. 2016
- de Ojeda , W. , Zheng , M. , Han , X. , Jeftic , M. , et al. 2015
- Aversa , C. Investigation on the Performance of a Long Breathing Lean NOx Trap Using N-Butanol 2017
- Takeshima , S. , Tanaka , T. , Iguchi , S. , Araki , Y. et al. Exhaust Purification Device of Internal Combustion Engine 1995
- Takahashi , N. , Yamazaki , K. , Sobukawa , H. , and Shinjoh , H. The Low-Temperature Performance of NOx Storage and Reduction Catalyst Applied Catalysis B: Environmental 70 1 198 204 2007 10.1016/j.apcatb.2005.10.029
- Fridell , E. , Skoglundh , M. , Westerberg , B. , Johansson , S. et al. NOx Storage in Barium-Containing Catalysts Journal of Catalysis 183 2 196 209 1999 10.1006/jcat.1999.2415
- Suarez-Bertoa , R. , Mendoza-Villafuerte , P. , Bonnel , P. , Lilova , V. et al. On-Road Measurement of NH 3 and N 2 O Emissions from a Euro V Heavy-Duty Vehicle Atmospheric Environment 139 167 175 2016 10.1016/j.atmosenv.2016.04.035
- Cheekatamarla , P.K. and Finnerty , C.M. Reforming Catalysts for Hydrogen Generation in Fuel Cell Applications Journal of Power Sources 160 1 490 499 2006 10.1016/j.jpowsour.2006.04.078
- Nahar , G.A. and Madhani , S.S. Thermodynamics of Hydrogen Production by the Steam Reforming of Butanol: Analysis of Inorganic Gases and Light Hydrocarbons International Journal of Hydrogen Energy 35 1 98 109 2010 10.1016/j.ijhydene.2009.10.013
- Gough , B. , Kotrba , A. , Salanta , G. , Popovich , J. et al. Transient Performance of an HC LNC Aftertreatment System Applying Ethanol as the Reductant SAE Technical Paper 2012-01-1957 2012 10.4271/2012-01-1957
- Haneda , M. , Morita , T. , Nagao , Y. , Kintaichi , Y. et al. CeO 2 -ZrO 2 Binary Oxides for NOx Removal by Sorption Phys. Chem. Chem. Phys. 3 21 4696 4700 2001 10.1039/B106074K
- Phatak , A.A. , Koryabkina , N. , Rai , S. , Ratts , J.L. et al. Kinetics of the Water-Gas Shift Reaction on Pt Catalysts Supported on Alumina and Ceria Catalysis Today 123 1 224 234 2007 10.1016/j.cattod.2007.02.031
- Pihl , J. , Parks , J. , Daw , C. , and Root , T. Product Selectivity during Regeneration of Lean NOx Trap Catalysts SAE Technical Paper 2006-01-3441 2006 10.4271/2006-01-3441
- Kubiak , L. , Matarrese , R. , Castoldi , L. , Lietti , L. et al. Study of N 2 O Formation over Rh- and Pt-Based LNT Catalysts Catalysts 6 3 36 2016 10.3390/catal6030036
- Kočí , P. , Bártová , Š. , Mráček , D. , Marek , M. et al. Effective Model for Prediction of N 2 O and NH 3 Formation during the Regeneration of NOx Storage Catalyst Top Catal 56 1 118 124 2013 10.1007/s11244-013-9939-y
- Castoldi , L. , Nova , I. , Lietti , L. , and Forzatti , P. Study of the Effect of Ba Loading for Catalytic Activity of Pt-Ba/Al 2 O 3 Model Catalysts Catalysis Today 96 1 43 52 2004 10.1016/j.cattod.2004.05.006
- Artioli , N. , Matarrese , R. , Castoldi , L. , Lietti , L. et al. Effect of Soot on the Storage-Reduction Performances of PtBa/Al 2 O 3 LNT Catalyst Catalysis Today 169 1 36 44 2011 10.1016/j.cattod.2010.10.062
- Clayton , R.D. , Harold , M.P. , Balakotaiah , V. , and Wan , C.Z. Pt Dispersion Effects during NOx Storage and Reduction on Pt/BaO/Al 2 O 3 Catalysts Applied Catalysis B: Environmental 90 3 662 676 2009 10.1016/j.apcatb.2009.04.029
- Yu , S. , Dev , S. , Yang , Z. , Leblanc , S. et al. Early Pilot Injection Strategies for Reactivity Control in Diesel-Ethanol Dual Fuel Combustion SAE Technical Paper 2018-01-0265 2018 10.4271/2018-01-0265
- Epling , W.S. , Campbell , G.C. , and Parks , J.E. The Effects of CO 2 and H 2 O on the NOx Destruction Performance of a Model NOx Storage/Reduction Catalyst Catalysis Letters 90 1 45 56 2003 10.1023/A:1025864109922
- Zhu , J. , Shen , M. , Wang , J. , and Wang , X. N 2 O Formation during NOx Storage and Reduction Using C 3 H 6 as Reductant Catalysis Today 297 92 103 et al. 2017 10.1016/j.cattod.2016.11.035
- Bion , N. , Epron , F. , and Duprez , D. Bioethanol Reforming for H 2 Production. A Comparison with Hydrocarbon Reforming Catalysis 1 55 2010 10.1039/9781847559630-00001