The specific output of 4-cycle engines are generally smaller than that of 2-cycle engines. Increasing engine speed is one method to improve the specific output, however, it contains some disadvantages in application. Hence, improvement in torque with the 4-cycle engine is desirable. Although torque could be improved by super-charging, it seems difficult to apply existing systems for small displacement engines due to problems of their size and cost.We have, therefore, newly developed a super-charging system named Advanced Crankcase Super Charge (hereinafter referred to as ACSC) using a crankcase as a supercharger. In this study, we made a 50cc single cylinder prototype engine with ACSC and carried out the engine unit tests and actual running tests on a scooter. From these tests, the torque that is twice as that of the naturally aspirated engine was obtained.In addition, the driving performance equivalent to that of the vehicle with 2-cycle engine was achieved in the actual running test. It was also confirmed that the emission level was equivalent to that of a vehicle with a naturally aspirated engine. There was also an improvement in fuel consumption compared to the vehicle with 2-cycle engine.


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    Titel :

    Advanced Super Charge System for Small Engines


    Weitere Titelangaben:

    Sae Technical Papers


    Beteiligte:
    Taue, Jun (Autor:in) / Norimatsu, Nobuo (Autor:in) / Fujiwara, Shunzo (Autor:in)

    Kongress:

    Small Engine Technology Conference & Exposition ; 1999



    Erscheinungsdatum :

    28.09.1999




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch




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