The relationship between MTBE-blended gasoline properties and warm-up driveability is investigated by focusing on the transient combustion air-fuel ratio that strongly relates to the combustion state of the engine. As a result, although warm-up driveability of MTBE-free gasoline has a high correlation with 50% distillation temperature (T50) and a high correlation with 100°C distillation volume (E100), the correlation is found to be low when blended with MTBE. Various formulas that improve correlation with peak excess air ratio (λ) by correcting T50 and E100 for the amount of MTBE blended are examined. The formula for which the highest determination coefficient is obtained is proposed as a new driveability index (DI) that can also be applied to MTBE-blended gasoline. In addition, the effect on driveability by gasoline base materials using this new DI also is investigated. The results indicate that the new DI worsen when heavy reformate containing large amounts of aromatics or MTBE, an oxygen-containing compound, is used for the octane improver, leaving the balance of the volatility out of consideration.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Relationship Between MTBE-Blended Gasoline Properties and Warm-Up Driveability


    Additional title:

    Sae Technical Papers



    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




    Relationship between MTBE-blended gasoline properties and warm-up driveability

    Suzawa,T. / Yamaguchi,K. / Kashiwabara,K. et al. | Automotive engineering | 1995


    Gasoline Driveability Index, Ethanol Content and Cold-Start/Warm-Up Vehicle Performance

    Evans, Beth / Jewitt, Carlton H. / Gibbs, Lewis M. | SAE Technical Papers | 2005


    Effects of ETBE or Ethanol Blended Gasoline on Vehicle Driveability and Exhaust Emissions

    Watanabe, M. / Okamoto, K. / Hirose, K. et al. | British Library Conference Proceedings | 2005


    Study of the Performance of MTBE Blended Unleaded Gasoline

    Sheng, S. / Feng, X. / Wang, X. et al. | SAE Technical Papers | 1987


    Study of the performance of MTBE blended unleaded gasoline

    Wang,X. / Yang,Y. / Sheng,S. et al. | Automotive engineering | 1987