The medium speed four-stroke trunk piston engine as main propulsion unit has managed for years to occupy a dominant position in coastal and inland shipping, in deep-sea fishing and in port and ocean-going tugs. It is now also gaining ground in shipping classes and performance ranges which until recently were the almost exclusive prerogative of other classes of engine. Its advantages with respect to installation potential and ship designing, the free choice of propeller speed as well as price and weight have been manifestly studied, often under conditions of the strictest objectivity. With the design as multiengine plant there are also the increased power reserve and greater suitability for estuary service. The exceptional suitability of this type of engine for all stages of automation have already been clearly recognized. It is not surprising, therefore, that considerable advantages are expected with the aid of simple means through the automation of propulsion plant with medium speed engines. The main aims of automation are the same in this case as with most ship propulsion units and have thus been often discussed. There are, however, various possibilities as solutions and thus the actual paths taken towards their realization in engineering practice often diverse. The described example is taken as brief illustration. The report refers to the automatic systems of about 35 propulsion units for which, at the time of writing, adequate periods of operation had been completed to permit an initial assessment. They represent about 13 % of the total units delivered in the same period and each equipped with identical engines. Service results were obtained, in particular, from three shipping companies and then studied. Through the use of suitable equipment, on the one hand, and main propulsion plant designed accordingly, on the other, it is possible to obtain every desired degree of automation for ship plants. The component parts to be used, especially control systems for the remote control of the engines, can nowadays be designed with complete operational reliability. Practical experience has shown that such plants are a success in operation on board of ships. For the decision on the choice of the most suitable degree of automation, a compromise will be aimed at which will be reached by taking into account the cost of the plant, the possible saving, the personnel situation and the type of service for which the ship is intended.


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    Title :

    Automation of propulsion plants with medium speed four-stroke trunk piston engines


    Additional title:

    Automatisierte Schiffsantriebe mit mittelschnelllaufenden Viertakt-Dieselmotoren


    Contributors:
    Schröder, H. (author) / Goltz, L. (author)


    Publication date :

    1968


    Size :

    33 Seiten, 14 Bilder, 10 Quellen


    Type of media :

    Conference paper


    Type of material :

    Storage medium


    Language :

    English