Bevel-helical gearboxes B4 er code Article No LP Z Sealing singles B4VH-5-C

Flender/Flender Gear Units/Bevel-helical gearboxes B4

system at the motor/ generator shaft side. The operation modes of the complete Hybrid CP System are as follows: High Propeller Speed (Speed / Diesel Mechanic High Propeller Speed (Speed / Power Boosting Lower Propeller Speed (Speed / Diesel Mechanic Lower Propeller Speed (Speed / Diesel Electric Generator Mode Figure 8 .Operational mission for typical two - speed GB application The advantages in fuel consumption of the two speed hybrid operation depend on the vessel operational profile. For typical operations of anchor handling tug supply (AHTS) and fishing vessel (see Figure the improvement can be signif icant. As indicated in Figure 9 , the fuel consumption reduction is the biggest at slow steaming and dynamic positioning re aching the level of 3%. Such studies need to be executed for each vessel type separately and quantify the potential benefits. Figure 9 . Fuel consumption for each part of the operational mission 7. Concluding Remarks It is attempted to demonstrate that the gear box in modern propeller shaft line is not only single power transmission component but functionality and performance enabler. Our main conc lusions are: 1. The ship machinery layout needs to be selected through business feasibility study. The evaluation must be based on the vessel type, size, operational mission, availability of solutions and technical preferences of the operator; 2. The diesel mechanic layouts especially as DF hybrid concepts provide very good solution at many cases ; 3. The sizing of the components (gear box, engine and propeller) needs to be examined together as part of an integrated system ; 4. The integration of functional systems (.. hydr aulics) can save space on the vessel and reduce the capital expense of the machinery ; 5. Hybrid solutions are enabled by the gear box on propeller shaft lines. We could be able to create various po wer take - out, take - in alternatives.