Integrated Management of PTO/PTI and Storage Systems for the Reduction of Fuel Consumptions and Polluting Emissions in a Cargo Ship

This paper deals with an integrated management technique of the shaft generator with a storage system on a cargo ship. It proposes a method devised to reduce the overall fuel consumption of the ship, considering both the main engine (ME) for propulsion and auxiliary diesel generator (DG) used for electric power generation, and the related polluting emissions. The proposed solution has been implemented on experimental data collected from a Kamsarmax bulk carrier on a 2-year time span. The results show that the proposed management system enables a significant reduction in fuel consumption, as well as decreases in SOx, PM2.5, and CO emissions by approximately 16%, 6%, and 4% respectively, compared to the current configuration without a shaft generator.