Effect of Octane Number on Performance and Exhaust Emissions of an SI Engine
Engineering and Technology Journal,
2020, Volume 38, Issue 4A, Pages 574-585
AbstractSpark ignition engines are very popular engines that they are running millions of vehicles all over the world. This engine emits many harmful pollutants, such as CO, UHC, and NOX. In this paper, the impact of gasoline octane number on the engine performance and exhaust emissions was studied. In the tests, four-cylinder, four-stroke engine, and two variable octane numbers (RON83 and 94.5) were used. The engine was run at different engine speeds and loads. The results from the experimental study indicated that the brake specific fuel consumption (bsfc) of RON94.5 was higher than RON83 by 13.93%, while the brake thermal efficiency (ƞbth) was higher for RON83 compared to RON94.5 by 12.31%. The emitted emissions for the tested fuels were high when RON83 was used compared to RON94.5 by 65.52%, 49.11%, and 57.33% for CO, UHC, and NOX, respectively.
 J. B. Heywood, “Internal combustion engine fundamentals,” Mc Graw-Hill, 1988.
 P. T. Nitnaware and V. M. Ganvir, “Design development and analysis of exhaust gas recirculation system for CNG fuelled SI engine,” Journal of Mechanical and Civil Engineering , vol. 13, no. 1, pp. 27–35, 2015.
 D. E. Stikkers, “Octane and the environment,” Sci. Total Environ., vol. 299, no. 1–3, pp. 37–56, 2002.
 P. Sudsanguan and S. Chanchaowna, “Using higher octane rating gasoline than engine requirement: loss or
gain,” Research Report of King Mongkut’s University of Technology, Thailand, 1999.
 C. Sayin, I. Kilicaslan, M. Canakci, and N. Ozsezen, “An experimental study of the effect of octane number higher than engine requirement on the engine performance and emissions,” Appl. Therm. Eng., vol. 25, no. 8–9, pp. 1315–1324, 2005.
 C. Sayin, “The impact of varying spark timing at different octane numbers on the performance and emission characteristics in a gasoline engine,” Fuel, vol. 97, no. x, pp. 856–861, 2012.
 D. U. Lawal, B. A. Imteyaz, A. M. Abdelkarim, and A. E. Khalifa, “Performance of spark ignition engine using gasoline-91 and gasoline-95.” International Journal of Innovative Science, Engineering and Technology, Vol. 1, Issue 6, 2014.
 S. Binjuwair, T. I. Mohamad, A. Almaleki, A. Alkudsi, and I. Alshunaifi, “The effects of research octane number and fuel systems on the performance and emissions of a spark ignition engine: A study on Saudi Arabian RON91 and RON95 with port injection and direct injection systems,” Fuel, vol. 158, no. X, pp. 351–360, 2015.
 T. I. Mohamad and H. H. Geok, “Part-load performance and emissions of a spark ignition engine fueled with RON95 and RON97 gasoline: Technical viewpoint on Malaysia’s fuel price debate,” Energy Convers. Manag., vol. 88, pp. 928–935, 2014.
 A. E. Khalifa, M. A. Antar, and M. S. Farag, “Experimental and Theoretical comparative study of performance and emissions for a fuel injection SI engine with two octane blends,” Arab. J. Sci. Eng., vol. 40, no. 6, pp. 1743–1756, 2015.
 A. Alahmer and W. Aladayleh, “Effect two grades of octane numbers on the performance , exhaust and acoustic emissions of spark ignition engine,” fuel, vol. 180, pp. 80–89, 2016.
 A. K. Rashid, A. Mansor, M. Radzi, W. A. W. Ghopa, Z. Harun, and W. M. F. W. Mahmood, “An experimental study of the performance and emissions of spark ignition gasoline engine.,” Int. J. Automot. Mech. Eng., vol. 13, no. 3, 2016.
 Hassan Abdellatif Osman, “Experimental study the effect of octane number on performance of the spark ignition engine,” International J. Eng. Sci., vol. 03, no. 06, pp. 53–61, 2016.
 A. F. Mohd Riduan, N. Tamaldin, and A. K. Mat Yamin, “Engine performance testing using variable RON95 fuel brands available in Malaysia,” MATEC Web Conf., vol. 90, p. 01023, 2016.
 Y. Heng Teoh, H. Geok How, K. Hwa Yu, H. Guan Chuah, and W. Loon Yin, “Influence of octane number rating on performance, emission and combustion characteristics in spark ignition engine,” J. Adv. Res. Fluid Mech. Therm. Sci. J, vol. 45, no. 1, pp. 22–34, 2018.
 M. K. Balki, C. Sayin, and M. Canakci, “The effect of different alcohol fuels on the performance, emission and combustion characteristics of a gasoline engine,” Fuel, vol. 115, pp. 901–906, 2014.
 K. Matsui, T. Tanaka, and S. Ohigashi, “Measurement of local mixture strength at spark gap of SI engines,” SAE Trans., pp. 1741–1755, 1979.
 M. Canakci, A. N. Ozsezen, E. Alptekin, and M. Eyidogan, “Impact of alcohol–gasoline fuel blends on the exhaust emission of an SI engine,” Renew. Energy, vol. 52, pp. 111–117, 2013.
 H. S. I. Engine, P. Tamilarasan, and M. Loganathan, “Experimental study on the use of EGR in a hydrogen-fueled SI engine,” vol. 7, no. 8, pp. 336–342, 2016.
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