An experimental investigation on a group of unleaded gasolines of different chemical composition has been carried out, in order to analyze their knock behaviour in a mass-produced engine at high revolution speed, to highlight possible inconsistencies with their standard Research and Motor octane numbers and to try to discover explanations for the abovementioned inconsistencies.The investigation has been focused on fuels containing oxygenated compounds, such as alcohols (methanol and ethanol) and ethers (MTBE), with the aim of pointing out the influence of the fuel composition on the octane rating, especially as far as the variation in the stoichiometric air/fuel ratio (due to oxygenated compounds blending) is concerned.In particular, the rating of all the fuels under the same relative air/fuel ratio has shown to be a mandatory condition in order to obtain a proper estimate of antiknock performances. The evaluations obtained are consistent with the standard Motor octane numbers.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Octane Rating Methods at High Revolution Speed


    Additional title:

    Sae Technical Papers


    Contributors:
    Ferraro, C. V. (author) / Barbera, E. (author) / Millo, F. (author) / Margaria, G. (author)

    Conference:

    1995 SAE International Fall Fuels and Lubricants Meeting and Exhibition ; 1995



    Publication date :

    1995-10-01




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




    Octane rating methods at high revolution speed

    Millo,F. / Ferraro,C.V. / Barbera,E. et al. | Automotive engineering | 1995


    High octane rating petrol

    Engineering Index Backfile | 1943


    MARINE ENGINE OCTANE RATING PROGRAM

    VOLLMER, J. C. / BOEGEL, M. J. / WELLS, R. A. | SAE Technical Papers | 1959



    Octane rating fits fuel to aero engines

    Engineering Index Backfile | 1946