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Theoretical investigation of flame propagation process in an SI engine running on gasoline–ethanol blends

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  • Bayraktar, Hakan

Abstract

Turbulent flame propagation process in a spark-ignition (SI) engine is theoretically investigated. Fueling with gasoline, ethanol and different gasoline–ethanol blends is considered. A quasi-dimensional SI engine cycle model previously developed by the author is used to predict the thermodynamic state of the cylinder charge during the cycle. The flame is assumed to be spherical in shape and centered at the spark plug. Computations are carried out for an automobile SI engine having a disc-shaped combustion chamber, for which the compression ratio and the nominal speed are 9.2 and 5800rpm, respectively. Geometrical features (flame radius, flame front area and enflamed volume) of the flame, combustion characteristics (mass fraction burned and burn duration), and cylinder pressure and temperature are predicted as a function of the crank angle. Three different positions of the crank angle are studied: −10°, TC and +10°. It was concluded that ethanol addition to gasoline up to 25vol% accelerated the flame propagation process.

Suggested Citation

  • Bayraktar, Hakan, 2007. "Theoretical investigation of flame propagation process in an SI engine running on gasoline–ethanol blends," Renewable Energy, Elsevier, vol. 32(5), pages 758-771.
    • Handle: RePEc:eee:renene:v:32:y:2007:i:5:p:758-771
    DOI: 10.1016/j.renene.2006.03.017
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    1. Bayraktar, Hakan, 2005. "Experimental and theoretical investigation of using gasoline–ethanol blends in spark-ignition engines," Renewable Energy, Elsevier, vol. 30(11), pages 1733-1747.
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    Cited by:

    1. Curto-Risso, P.L. & Medina, A. & Calvo Hernández, A. & Guzmán-Vargas, L. & Angulo-Brown, F., 2011. "On cycle-to-cycle heat release variations in a simulated spark ignition heat engine," Applied Energy, Elsevier, vol. 88(5), pages 1557-1567, May.
    2. Chen, Wei-Cheng & Sheng, Chung-Teh & Liu, Yu-Cheng & Chen, Wei-Jen & Huang, Wen-Luh & Chang, Shih-Hsien & Chang, Wei-Che, 2014. "Optimizing the efficiency of anhydrous ethanol purification via regenerable molecular sieve," Applied Energy, Elsevier, vol. 135(C), pages 483-489.
    3. Baratta, Mirko & Misul, Daniela, 2012. "Development and assessment of a new methodology for end of combustion detection and its application to cycle resolved heat release analysis in IC engines," Applied Energy, Elsevier, vol. 98(C), pages 174-189.
    4. Thangavelu, Saravana Kannan & Ahmed, Abu Saleh & Ani, Farid Nasir, 2016. "Review on bioethanol as alternative fuel for spark ignition engines," Renewable and Sustainable Energy Reviews, Elsevier, vol. 56(C), pages 820-835.
    5. Navarro, Emilio & Leo, Teresa J. & Corral, Roberto, 2013. "CO2 emissions from a spark ignition engine operating on natural gas–hydrogen blends (HCNG)," Applied Energy, Elsevier, vol. 101(C), pages 112-120.
    6. Thangavel, Venugopal & Momula, Sai Yashwanth & Gosala, Dheeraj Bharadwaj & Asvathanarayanan, Ramesh, 2016. "Experimental studies on simultaneous injection of ethanol–gasoline and n-butanol–gasoline in the intake port of a four stroke SI engine," Renewable Energy, Elsevier, vol. 91(C), pages 347-360.
    7. Zhen, Xudong & Wang, Yang, 2013. "Study of ignition in a high compression ratio SI (spark ignition) methanol engine using LES (large eddy simulation) with detailed chemical kinetics," Energy, Elsevier, vol. 59(C), pages 549-558.

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