The first series-built large marine diesel engine with electronically-controlled common-rail injection entered service in September 2001. This Sulzer 6RT-flex58T-B engine is giving excellent service. The paper reports on the experience with this engine over the past 2.5 years, the relatively few problems encountered and the necessary modifications and improvements introduced so far. In the meantime, another five Sulzer RT-flex engines have entered service, including four vessels powered with the new RT-flex60C type. The corresponding short experience is also reported briefly in this paper. The RT-flex60C was fully developed with the RT-flex common-rail system from beginning. The new Sulzer common-rail system has also been extended to the largest bore size in the Sulzer RTA engine portfolio, the RT-flex96C developing 5720 kW/cylinder. This was rapidly accepted by shipowners and a large number of container vessels have been ordered with RT-flex96C engines. The RT96C engine itself was slightly adapted to suit the Sulzer RT-flex system. The paper describes mechanical and hydraulic functions of the RT-flex system and, in some detail, the process for development and industrialisation of the Sulzer RT-flex IV system for large-bore engines. The RT-flex common-rail system has a high degree of redundancy, this redundancy and the related safety aspects are addressed in the paper. A short insight is given to the extended endurance testing of the RT-flex components being an important contribution to success.
Evolution of the Sulzer RT-flex common rail system
Weiterentwicklung des Sulzer RT-flex Common-Rail-Systems
2004
10 Seiten, 15 Bilder, 4 Quellen
Conference paper
Storage medium
English
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