MV. Meratus Palembang as a container ship has a dynamic main engine operating conditions to deliver the cargo on time. In dynamic main engine operating conditions, the various speed of the ship is influencing the process of thermodynamics in main engine combustion chamber which affecting to the turbocharger efficiency. In this paper, several types of turbochargers are tested on several engine loads. In the engine-propeller load, at a maximum pressure ratio of turbocharger have a volumetric flow rate at 3,15 m 3 /s for VTR 304, for VTR 321 at 2,5 m 3 /s, and for VTR 354 also at 3,15 m 3 /s. It is because propeller gave a high load to the engine which affecting turbocharger to support more energy than the engine normal load. Thus, the dynamic main engine operating conditions make the volumetric value increasing. Moreover, on VTR 304 at 11,1 knots turbocharger has an efficiency at 80%, and for design speed of ship (Vs) at 10,4 knots turbocharger has an efficiency at 78%, on VTR 321 at 11,1 knots turbocharger has an efficiency at 78 % and for design speed of ship (Vs) at 10,4 knots turbocharger have an efficiency at 80%, on VTR 354 at 11,1 knots turbocharger is surging and for design speed of ship (Vs) at 10,4 knots turbocharger have a surge efficiency also. Engine power output at maximum load condition for VTR 304 the power output become 3220,595 kW, for VTR 321 become 2588,903 kW, and for VTR 354 become 3220,595 kW.
Read full abstract