Methanol fuel utilization for van-type vehicles with Otto-type engines has been studied. A water-cooled, in-line four, 2 liter engine equipped with the multi-point fuel injection system was operated with near neat methanol fuel (M85). Spark plugs without platinum tipped electrodes and the 10.2 compression ratio were adopted to prevent preignition damaging the engine. Exhaust emission levels from a methanol fueled vehicle were almost equal to those of a gasoline vehicle under the 10-mode driving cycle, but HC and CO emissions under the 11 mode driving cycle were larger than those from a gasoline vehicle due to enriched mixture calibration during warm up condition. With regard to the durability, there still remains many problems to be resolved, for example, engine wear, oil dilution under short distance traveling conditions, the injector and the fuel pump malfunctions. Moreover, the formaldehyde emission increased with mileage.


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    Title :

    Study on Methanol Fueled Vehicle with an Otto-Type Engine


    Contributors:
    Y. Tsukasaki (author) / H. Nohira (author) / S. Ito (author) / T. Inoue (author)

    Publication date :

    1989


    Size :

    9 pages


    Type of media :

    Report


    Type of material :

    No indication


    Language :

    English




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