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    Chemical Model of Gasoline-Ethanol Blends for Internal Combustion Engine Applications

    Chemical Model of Gasoline-Ethanol Blends for Internal Combustion Engine Applications


    A semi-detailed chemical mechanism for combustion of gasoline-ethanol blends, which is based on sub-mechanisms of gasoline surrogate and for ethanol is developed and validated aiming at CFD engine modeling. The gasoline surrogate is composed of iso-octane, toluene, and n-heptane in volumetric proportions of 55%:35%:10%, respectively. In this way, the hydrogen-carbon atomic ratio H/C, which is around 1.87 for real gasoline, is accurately reproduced as well as a mixture equivalence ratio that is important for Gasoline Direct Injection engine applications. The integrated mechanism for gasoline-ethanol blends includes 120 species participating in 677 reactions. The mechanism is tested against experimental data on ignition delay times and laminar flame speeds, obtained for various n-heptane/iso-octane/toluene/ethanol-air mixtures under various equivalence ratios, initial temperatures, and pressures. Chemical, thermodynamic and transport properties used in the calculations are discussed.

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    Title :

    Chemical Model of Gasoline-Ethanol Blends for Internal Combustion Engine Applications

    Additional title:

    Sae Technical Papers

    Contributors:
    Lipatnikov, Andrei (author) / Huang, Chen (author) / Golovitchev, Valeri (author)
    Conference:

    SAE 2010 World Congress & Exhibition ; 2010

    Published in:

    Sae Technical Paper Series

    Publication date :

    2010-04-12

    ISSN :

    2688-3627 , 0148-7191

    DOI :

    https://doi.org/10.4271/2010-01-0543

    Type of media :

    Conference paper

    Type of material :

    Print

    Language :

    English

    Keywords :

    Combustion and combustion processes , Ethanol , Computational fluid dynamics , Gasoline

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