Parametric investigation and optimal selection of the hybrid turbocharger system for a large marine four-stroke dual-fuel engine

• Thermodynamic modelling of large marine dual fuel engine with hybrid turbocharger. Parametric investigation to identify influence on the performance and emissions. Hybrid turbocharger rated power optimal selection for considered annual profile. Installation a leads 2–4% surplus energy production. turbochargers can become an attractive solution new built retrofitted ship plants, as their use result in increasing plant efficiency reducing This study aims at computationally investigating effects dual-fuel four-stroke emissions characteristics well determining its electrical generator size case considering actual operating An existing model zero/one-dimensional type, which was developed commercial software GT-Power, is extended include sub-model. subsequently employed carry out parametric wide range electric motor power. The derived results are analysed variations investigated parameters whole envelope both diesel gas modes, whilst taking into account components operational limits. For load profile, demonstrate that nominal 300 kW between 2% 3% annually delivered mechanical energy. benefits quantification impact engines efficiency, thus providing useful decision support facilitate shipboard implementation this technology.