The 292.5 m long cruise ship Carnival Spirit is an 86000 gt vessel designed for 2124 passengers. Two of its six nine-cylinder Wärtsila L46D diesel engines with a total output of 62370 kW are equipped with common-rail technology and full electronic control. This two common-rail engines allow to cruise smokeless in sensitive areas like Alaska, Hawaii or Florida. The conversion to common-rail technology includes modification to the cylinder head, installation and replacement of the fuel oil system equipment and the engine control. The only external changes needed are finer fuel and lube oil filtration and an increased starting air capacity. The major benefit results from a high fuel injection pressure even at low load maintaining an efficient combustion and from optimized injection timing. At the heavy fuel common-rail system one pump supplies two interconnected accumulators each connected with two injectors. Injection timing and duration are electronically controlled as well. The common-rail technology is considered to be a major step forward for cruise vessels operating in environmental sensitive areas.
Smokeless diesels in new cruise ship
Diesel and Gas Turbine Worldwide ; 33 , 2 ; 30-31
2001
2 Seiten, 3 Bilder
Article (Journal)
English
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