10.18453/rosdok_id00004258 Abaskharon, Mina Mina Abaskharon http://d-nb.info/gnd/1286924057 Universität Rostock 2022 620 Engineering & allied operations 2022 en http://purl.uni-rostock.de/rosdok/id00004258 urn:nbn:de:gbv:28-rosdok_id00004258-3 This research aims to optimize the performance and emissions of a dual-fuel marine engine by a flexible valve train approach. A mathematical model for the flexible valve train strategy including its two sub-mechanisms (Flexible Camshaft Technology (FCT) and Multi-segment Camshaft) is developed in MATLAB. After that, a phenomenological combustion model based on fractal combustion principle is developed in AVL CRUISE-M. The combustion model includes many sub-models and allows the valve timing positions to be imported to investigate their influence on the engine performance and emissions.