The shipping companies are facing strong demands to reduce operational costs, fuel consumption and emissions. Beside the current economical situation new emission legislations are going to affect this business in a short term. This leads to the need for a continuous holistic ship operation optimization with special focus onto the engine room. AVL EPOS enables a permanent online monitoring and diagnosis of the propulsion and auxiliary engines - two-strokes and four-strokes - onboard a vessel. The outcome allows the operators a persistent engine operation optimization. This system develops its maximum performance as one heartpiece of Kongsbergs vessel performance optimizer, integrated in the respective marine automation system. The first version of AVL EPOS was introduced together with Kongsberg Maritime into the market in June 2009. The system has been developed by utilizing AVLs typical core competencies and products from the large engine division, the instrumentation and test system division and the advanced simulation technology division in combination with extensive internal and external practical experience. AVL EPOS is based on well-proven in-house software tools. A big part contains the algorithms of the expert system. The software is engineered with an open platform concept allowing the integration of all kind of measurement systems for e. g. shaft torque, bearing clearance and temperature. The current version allows the online diagnosis of the fuel injection and the combustion, latter in combination with AVL cylinder pressure sensors suitable for long-term online operation with HFO, biofuel or gas. Several of these sensors are in operation on various kinds of engine types in different installations with operating times of up to 14.000 hours. Since 2008 two pilot installations are in operation in the field: one on the car carrier 'Höegh Detroit' with a HFO-fueled slow-speed main engine and one in the stationary power plant Stendal with mainly gas-driven dual-fuel medium-speed engines. Both installations showed a very reliable behaviour delivering very accurate results and diagnoses. The cylinder pressure sensors showed no operation related failure up to now. Since mid of 2009 a test installation on the container vessel 'Maersk Drury' is in operation fulfilling the ship owners expectations clearly. Currently several extensions of AVL EPOS are under development, e.g. automatic TDC correction, thermodynamical turbocharger monitoring, prediction of component behaviour and NOx modelling. As final goal it is foreseen to extend AVL EPOS to all relevant zones and auxiliary systems for capturing the engine operation in its entireness.


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    Title :

    Permanent diagnosis and optimization of large-bore marine engine operation with expert AVL EPOS based


    Contributors:


    Publication date :

    2010


    Size :

    10 Seiten, 14 Bilder, 7 Quellen


    Type of media :

    Conference paper


    Type of material :

    Storage medium


    Language :

    English





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