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1887
Volume 62, Issue 4
  • ISSN: 2056-5135

Abstract

Exhaust gas recirculation is a widely used technology on conventional vehicles, primarily for lowering emissions of local pollutants. Here we use chemical models to show that an exhaust-gas recirculation loop can be converted into a heat-recovery system by incorporating a catalytic reformer. The system is predicted to be particularly effective for gasoline-fuelled spark ignition engines. The high temperature and low oxygen-content of the exhaust gas mean that endothermic reactions will predominate, when some of the gasoline is injected into the recirculation loop upstream of the reformer. The output of the reformer will, therefore, have a higher fuel heating value than the gasoline consumed. Chemical efficiency calculations, based on the predicted reformer output at chemical equilibrium, indicate that the direct improvement in fuel economy could be as high as 14%. Initial tests using a rhodium reforming catalyst suggest that much of the heat recovery predicted by the thermodynamic models can be achieved in practice, which together with a reduction in throttling may allow a gasoline spark ignition engine to match the fuel economy of a diesel engine.

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2018-01-01
2024-11-05
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References

  1. “Climate Change 2014: Mitigation of Climate Change”, eds. O. Edenhofer, R. Pichs-Madruga, Y. Sokona, J. C. Minx, E. Farahani, S. Kadner, Seyboth, A. Adler, I. Baum, S. Brunner, P. Eickemeier, B. Kriemann, J. Savolainen, S. Schlömer, C. von Stechow, T. Zwickel, Intergovernmental Panel on Climate Change (IPCC), Geneva, Switzerland, 2014, 1454 pp LINK http://www.ipcc.ch/report/ar5/wg3/ [Google Scholar]
  2. M. Lapuerta, J. Rodriguez-Fernandez, J. M. Herreros, ‘Gaseous and Particle Greenhouse Emissions from Road Transport’, in “Environmental Impacts of Road Vehicles: Past, Present and Future”, eds. R. M. Harrison, R. E. Hester, The Royal Society of Chemistry, London, UK, 2017, pp. 2545 LINK http://dx.doi.org/10.1039/9781788010221-00025 [Google Scholar]
  3. C. Sprouse III, C. Depcik, Appl. Therm. Eng., 2013, 51, (1–2), 711 LINK https://doi.org/10.1016/j.applthermaleng.2012.10.017 [Google Scholar]
  4. C. O. Katsanos, D. T. Hountalas, T. C. Zannis, Energy Conv. Manage., 2013, 76, 712 LINK https://doi.org/10.1016/j.enconman.2013.08.022 [Google Scholar]
  5. D. H. Lee, J. S. Lee, J. S. Park, Appl. Energy, 2010, 87, (5), 1716 LINK https://doi.org/10.1016/j.apenergy.2009.11.004 [Google Scholar]
  6. X. Liang, X. Wang, G. Shu, H. Wei, H. Tian, X. Wang, Int. J. Engine Res., 2015, 39, (4), 453 LINK https://doi.org/10.1002/er.3242 [Google Scholar]
  7. D. Fennell, J. Herreros, A. Tsolakis, K. Cockle, J. Pignon, P. Millington, RSC Adv., 2015, 5, (44), 35252 LINK https://doi.org/10.1039/C5RA03111G [Google Scholar]
  8. M. Bogarra, J. M. Herreros, A. Tsolakis, A. P. E. York, P. J. Millington, Appl. Energy, 2016, 180, 245 LINK https://doi.org/10.1016/j.apenergy.2016.07.100 [Google Scholar]
  9. J. Barbier Jr., D. Duprez, Appl. Catal. B: Environ., 1994, 4, (2–3), 105 LINK https://doi.org/10.1016/0926-3373(94)80046-4 [Google Scholar]
  10. J. W. Jenkins, E. Shutt, Platinum Metals Rev., 1989, 33, (3), 118 LINK https://www.technology.matthey.com/article/33/3/118-127/ [Google Scholar]
  11. N. Edwards, S. R. Ellis, J. C. Frost, S. E. Golunski, A. N. J. van Keulen, N. G. Lindewald, J. G. Reinkingh, J. Power Sources, 1998, 71, (1–2), 123 LINK https://doi.org/10.1016/S0378-7753(97)02797-3 [Google Scholar]
  12. K. Geissler, E. Newson, F. Vogel, T.-B. Truong, P. Hottinger, A. Wokaun, Phys. Chem. Chem. Phys., 2001, 3, (3), 289 LINK https://doi.org/10.1039/B004881J [Google Scholar]
  13. S. Golunski, Platinum Metals Rev., 1998, 42, (1), 2 LINK https://www.technology.matthey.com/article/42/1/2-7/ [Google Scholar]
  14. S. Golunski, Energy Environ. Sci., 2010, 3, (12), 1918 LINK https://doi.org/10.1039/C0EE00252F [Google Scholar]
  15. C. S. Lau, D. Allen, A. Tsolakis, S. E. Golunski, M. L. Wyszynski, Biomass Bioenergy, 2012, 40, 86 LINK https://doi.org/10.1016/j.biombioe.2012.02.004 [Google Scholar]
  16. E. D. Sall, D. A. Morgenstern, J. P. Fornango, J. W. Taylor, N. Chomic, J. Wheeler, Energy Fuels, 2013, 27, (9), 5579 LINK https://doi.org/10.1021/ef4011274 [Google Scholar]
  17. S. Peucheret, M. Feaviour, S. Golunski, Appl. Catal. B: Environ., 2006, 65, (3–4), 201 LINK https://doi.org/10.1016/j.apcatb.2006.01.009 [Google Scholar]
  18. Y. Chang, J. P. Szybist, J. A. Pihl, D. W. Brookshear, Energy Fuels, 2018, 32, (2), 2245 LINK https://doi.org/10.1021/acs.energyfuels.7b02564 [Google Scholar]
  19. P. Leung, A. Tsolakis, J. Rodríguez-Fernández, S. Golunski, Energy Environ. Sci., 2010, 3, (6), 780 LINK https://doi.org/10.1039/B927199F [Google Scholar]
  20. Y. Chang, J. P. Szybist, J. A. Pihl, D. W. Brookshear, Energy Fuels, 2018, 32, (2), 2257 LINK https://doi.org/10.1021/acs.energyfuels.7b02565 [Google Scholar]
  21. J. B. Heywood, ‘Engine Friction and Lubrication: Engine Friction Data: SI Engines’, in “Internal Combustion Engines Fundamentals”,McGraw-Hill Inc, New York, USA, 1988, pp. 722723 [Google Scholar]
  22. D. A. Fennell, ‘Exhaust Gas Fuel Reforming for Improved Gasoline Direct Injection Engine Efficiency and Emissions’, PhD thesis, University of Birmingham, Birmingham, UK, 2014 LINK http://etheses.bham.ac.uk/5439/ [Google Scholar]
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