ANALISA ENGINE PROPELLER MATCHING dan PENGARUHNYA TERHADAPA KONSUMSI BAHAN BAKAR

Abstract

The ship's propulsion system consists of a main motor as the power source, a propeller shaft as the power transmission, and a propeller as the thrust generator. Thrust must be greater than the ship's resistance, so the selection of the main motor and propulsion system must be carried out correctly. The compatibility between the ship's hull, main motor, and propeller, called engine-propeller matching (EPM), is very important. This study aims to determine the magnitude of EPM power and its effect on fuel consumption. Primary and secondary data collection methods are used to obtain data on the basic dimensions of the ship and engine data, which are on five ships on the Ambon-Manopa shipping route. The lines plan is depicted, and the propulsion system is designed, which has been carried out in previous research. Then, analyzing the engine propeller matching, the operating point is obtained at 50% propeller efficiency, with a rotation of 94.44%, requiring 79.08% power with a propeller load of 424 Nm so that it can reach a speed of 8 knots and 2. Fuel use at ship speed variations from 4 to 9 knots shows that in engine propeller matching conditions, the amount of fuel used is 2250.24 gr / Kw.h at a speed of 8 knots.