Method of starting internal combustion engine of hybrid propulsion system in marine vessel and hybrid propulsion system in marine vessel

摘要

A method of operating a hybrid propulsion system (11) of a marine vessel (10), the hybrid propulsion system comprising a propulsion shaft (16) and a propeller (14) assembled to the propulsion shaft (16), the propulsion shaft (16) and the an internal combustion piston engine (18) arranged mechanically connectable in forced transmission connection with a propeller, and mechanically connectably arranged in forced transmission connection with said propulsion shaft (16) and/or said internal combustion piston engine (18) an electric motor-generator (20, 20''), wherein in the starting method, the internal combustion piston engine (18) applies power from an on-board power source (24) to the electric motor-generator (20, 20'') and is started by rotating the internal combustion piston engine 18 by the electric motor-generator 20, 20'', and the rotational speed of the internal combustion piston engine 18 is the starting speed of the internal combustion piston engine 18. without attempting to accelerate to a predetermined limited rotational speed, and only after the rotational speed of the internal combustion piston engine 18 reaches the predetermined limited rotational speed, the internal combustion piston engine 18 is started.