A very large number of MC & ME engines are entering service these years. The latest development of the most successful marine engine series ever is the ME-B series of which more than hundred engines are on order or delivered. The ME-B series are targeting the small bore end (35-40-46-50 and 60) of the MAN B&W two stroke engine range. Electronically controlled low speed diesels have been part of our engine programme for several years, actually since 2001. Today more than 500 electronically controlled engines are in service and with IMO Tier II emission rules coming into force for vessels with keel-laying after 1st January 2011 increased focus on the electronically engine versions are expected. Also because of this development the optimized ME-B engine range is very important and has already grabbed a lot of attention among ship owners. This paper will deal with the latest service experience obtained until now with ME/ME-C engines in service. Also early service experience for the 6S40ME-B will be dealt with. The difference between the ME-C concept and the ME-B concept will be described from a service point of view. Advantages of recent ME-software updates focussing on onboard trouble shooting will be described and related to service experience. Furthermore update on service experience on the MC/MC-C engine series will be given focusing on the engine structure. Common for both the ME/ME-C and the MC/MCC engine series is the well documented possibility to do Condition Based Overhaul (CBO) with average Time Between Overhauls (TBOs) of 32000 hours and above. For tanker this opens up the possibility to do only major overhauls at dockings with 5 years interval. Many ship-owners do now have the experience of CBO. Also the development in relation to the cylinder condition with focus on cylinder oil consumption will be touched upon. Due to the present economic crisis (June 2009) a lot of focus have lately been devoted to optimisation of low load operation. MAN Diesel issued in early 2009 a Service Letter dealing with the possibility of operating continuously down to 10% load. Service tests with various scavenging air pressure increasing measures at low load have also been carried out. Here tests with turbocharger cut-out and Variable Turbine Area (VTA) turbochargers are the most important ones. Result of these tests will also be dealt with.


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    Title :

    Service experience of MAN B&W two stroke diesel engines


    Contributors:


    Publication date :

    2010


    Size :

    19 Seiten, 49 Bilder, 8 Quellen


    Type of media :

    Conference paper


    Type of material :

    Storage medium


    Language :

    English




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