The aldehyde emissions of 1.6L and 5.0L flexible fuel vehicles (FFV) have been measured, with and without a catalyst, on a range of fuels. The “zero mile” catalyzed emission levels of formaldehyde when operating on M85 (85% methanol and 15% gasoline) are in the 5-15 mg/mi range, but as mileage accumulates they tend to be in the 30-50 mg/mi range. The feedgas levels are high and appear to correlate with engine displacement. The formaldehyde and methanol emissions are higher when operating on M100, compared to M85, but the non-oxygenated hydrocarbon emissions are about the same for both fuels, which suggests that the use of M85 may actually provide more air quality benefit than M100. High mileage control of aldehydes to the level of gasoline vehicles does not appear possible with current technology.


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    Title :

    A View of Flexible Fuel Vehicle Aldehyde Emissions


    Additional title:

    Sae Technical Papers


    Contributors:

    Conference:

    1988 Conference and Exposition on Future Transportation Technology ; 1988



    Publication date :

    1988-08-01




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




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