The high power required for the propulsion of modern specialized ships has led S. E. M. T. to introduce on the market already in 1973, the PC 4 medium-speed engine of 1500 HP/cyl. at 400 rpm. Allowing the realization of scarcely cumbersome propulsion machineries exceeding 25000 HP in one engine and 50000 in two the development program of this engine has been established for a quick obtainment, thanks to the experience gained by S. E. M. T. with PC 2 and PC 3 engines and to endurance tests carried out on two prototype engines, of a high level of reliability. In a first part, the paper describes the investigations carried out and the solutions chosen after laboratory tests on models or actual pieces, on the parts subject to the highest mechanical and thermal stresses. In a second part, the results of engine tests from the performance point of view are described (particularly fuel and lub. oil consumption) as well as results obtained after more than 2500 operating hours with heavy fuel. Finally, the third part deals with the maintenance on board ships which very often must be carried out as a systematic replacement of components during the stay in port of which the short duration necessitates special requirements for dismantling times. The paper describes tools and equipment of new design which have been specially developed to decrease dismantling and erection times for several components: connecting rod bearing caps, exhaust valves, cylinder heads and exhaust manifolds, cylinder blocks and fuel pump plunger-barrel assemblies.


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    Titel :

    Moteurs semi-rapides de grande puissance S.E.M.T. - Pielstick PC 4


    Weitere Titelangaben:

    Erste Erfahrungen mit dem mittelschnelllaufenden Dieselmotor Pielstick PC4
    First experiences with the Pielstick PC4 medium speed diesel engine


    Beteiligte:
    Disez, Y. le (Autor:in) / Bouquet, J.C. (Autor:in)


    Erscheinungsdatum :

    1975


    Format / Umfang :

    47 Seiten, 50 Bilder


    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Datenträger


    Sprache :

    Französisch




    S.E.M.T. Pielstick

    Online Contents | 1995


    S.E.M.T.-Pielstick-Dieselmotoren von Crossley

    Eh / Crossley-PREMIER Eugines,Manchester,GB | Kraftfahrwesen | 1976


    30 Years of S.E.M.T. Pielstick Licenses

    Kunberger,K. / SEMT-Pielstick,FR | Kraftfahrwesen | 1979