Biomass derived ethanol is thought to be a promising gasoline blend stock to reduce carbon dioxide (CO2) emissions from vehicles, and its practical use is under discussion. In Japan, the maximum permissible limit of ethanol content in gasoline is 3 vol%, which almost corresponds to 1.3 mass% of oxygen content, which is defined by gasoline quality standards at present. In addition to ethanol, the use of Ethyl tert-Butyl Ether (ETBE), which is synthesized from biomass ethanol and isobutene, is under discussion as a kind of biomass fuels in Japan.This study examines and discusses the effects of ethanol- and ETBE-blended gasolines on evaporative emissions, especially on refueling loss and diurnal breathing loss (DBL) emissions, from in-use passenger cars in Japan. This study shows that refueling loss emissions don't increase with ethanol- or ETBE-blended gasoline as long as Reid Vapor Pressure (RVP) is adjusted. However, DBL emissions significantly increased with 3vol% ethanol-blended gasoline (E3 gasoline), compared to base gasoline (non-oxygenated gasoline) or ETBE blended gasoline, even though RVP of each fuel was adjusted to within similar levels. The effects of ethanol-blended gasoline on evaporative emissions were studied from the view point of vapor composition. As a result, the increased DBL emissions with ethanol-blended gasoline were presumed to be caused by permeation through vehicle fuel systems.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Effects of Ethanol or ETBE Blending in Gasoline on Evaporative Emissions for Japanese In-Use Passenger Vehicles


    Additional title:

    Sae Technical Papers



    Conference:

    Powertrain & Fluid Systems Conference and Exhibition ; 2007



    Publication date :

    2007-10-29




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




    Effects of ethanol or ETBE blending in gasoline on evaporative emissions for japanese in-use passenger vehicles

    Tanaka,H. / Matsumoto,T. / Funaki,R. et al. | Automotive engineering | 2007


    Effects of Ethanol or ETBE Blending in Gasoline on Evaporative Emissions for Japanese In-Use Passenger Vehicles

    Tanaka, H. / Matsumoto, T. / Funaki, R. et al. | British Library Conference Proceedings | 2007


    Effects of Ethanol and ETBE Blending in Gasoline on Evaporative Emissions

    Tanaka, Haruya / Takeda, Hiroshi / Kaneko, Takashi et al. | SAE Technical Papers | 2006


    Effects of Ethanol or ETBE Blending in Gasoline on Evaporative Emissions

    Tanaka, H. / Kaneko, T. / Matsumoto, T. et al. | British Library Conference Proceedings | 2007


    Effects of Ethanol or ETBE blending in Gasoline on Vehicle Exhaust Emissions, Evaporative Emissions and Drivabilities

    Sogawa, Y. / Tanaka, H. / Sato, T. et al. | British Library Conference Proceedings | 2008