The layout of the new BMW engine as a transverse 4-cylinder engine with integrated cassette gearbox and a capacity of 1156 ccm is the result of both package and power output demands. The engine has very compact dimensions at a low weight of only 81.2 kg. A high specific output of 106 kW/l and 113 Nm/l are combined with a very full torque curve. 80 % of the maximum torque of 130 Nm are available between 4000 1/min and 11000 1/min. The state-of-the-art cylinder head with cam follower valve train and coupling wheels also enables the ambitious output and package requirements to be fulfilled. The use of a cassette gearbox enables a very compact and rigid casing structure and minimises assembly work during production. The engine gearbox oil circulation is conceived as a dry sump lubrication system. Its ventilation concept is derived directly from motor racing and is transferred to a serial production vehicle here for the first time. Comfort demands were accounted for in the concept phase with the balancer shafts and numerous measures to ensure an appropriate engine sound. The electronical engine management system BMS-K with integrated knock control guarantees very good readability, low fuel consumption and low emissions at a very high reliability. The engine of the K 1200 S thus contributes considerably to the fact that the rider experiences it as a motorcycle which sets a new pattern within the segment of high-performance sports bikes - not only by BMW standards - yet which at the same time does justice to properties characteristic of BMW.


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    Titel :

    The new 4-cylinder engine in the BMW K 1200 S


    Beteiligte:
    Nehse, Wolfgang (Autor:in) / Strohe, Manfred (Autor:in)


    Erscheinungsdatum :

    2005


    Format / Umfang :

    25 Seiten, 23 Bilder, 4 Quellen



    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch




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