Up to now, piston or diaphragm-controlled two-stroke engines have been used almost exclusively in hand-held engine-powered equipment. Compared to four-stroke engines, they offer advantages with regard to their simple design, low weight, a wide useful speed range, and high power density. However, a disadvantage is the high hydrocarbon emissions which, due to the principle design are caused by the significant gas-exchange losses. In the future, the simple two-stroke engine will no longer be able to meet the increasingly strict pollutant emission thresholds applicable to hand-held engine-powered equipment in Europe and the USA. For this reason, an innovative mixture-lubricated high-performance four-stroke engine for chainsaws was developed. It combines the advantages of the two-stroke engine with the low emissions of the four-stroke principle.


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    Title :

    Development of a Valve Controlled Four-stroke Chainsaw to Meet Future Emission Regulations


    Additional title:

    Sae Technical Papers


    Contributors:

    Conference:

    Small Engine Technology Conference & Exposition ; 2006



    Publication date :

    2006-11-13




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English





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