The paper reviews the development of Sulzer RTA low-speed marine diesel engines over the past three years. A general overview is combined with details of various upgradings and new developments. The main advance has been the extension of the Sulzer RT-flex common-rail concept to more engine types. Reliability continues to be the most important subject for large marine engines. In this respect, the latest piston-running behaviour of Sulzer engines is reported with very low, consistent wear rates and savings in cylinder lubricating oil feed rates being achieved. The integrity of engine structures is also essential for reliability. Thus improvements in welded structures and their analysis by finite-element calculations are reviewed. Comments are also made on further improvements to the design of the main bearings, including especially elasto-hydrodynamic calculations involving the structure, crankshaft and shaft alignment. For good reliability of diesel engines built under licence, Wartsila has set up so-called quality forums with its licensees to secure optimum exchange of knowledge, to evaluate and improve quality processes where necessary, and to make sure that weak points are immediately corrected. The paper also gives an overview of development work regarding cylinder lubrication for the future, and the latest achievements in the reduction of exhaust emissions. A new concept is described for optimising engines to make best use of waste heat recovery.


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    Titel :

    Sulzer low speed engines state of the art


    Weitere Titelangaben:

    Die Entwicklung der langsam laufenden Schiffsdiselmotoren von Sulzer in den letzten drei Jahren


    Beteiligte:


    Erscheinungsdatum :

    2004


    Format / Umfang :

    15 Seiten, 32 Bilder, 4 Tabellen, 5 Quellen


    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Datenträger


    Sprache :

    Englisch




    Sulzer low speed engines state of the art

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