Operating method of hybrid propulsion ship and hybrid propulsion ship

摘要

PROBLEM TO BE SOLVED: To stably switch a propeller rotation from a motor propulsion to a hybrid propulsion with a small motor 20. A hybrid propulsion ship 1 has a main engine 5, a motor 20, a slip clutch 7, and a propeller. The rotation speed of the propeller is higher than the first rotation speed that can be reached by driving the motor alone, and the second rotation speed when the main engine is driven at the idle rotation speed. First stage: The clutch is disengaged and the propeller is driven by the motor alone so that the propeller speed becomes equal to or lower than the first rotation speed. Second stage: The power of the main engine is transmitted while the clutch is slipping to raise the propeller to the second rotation speed. Third stage: The main engine is driven alone or both the main engine and the motor are driven so that the propeller is directly connected to the clutch so that the propeller has a second rotation speed or higher. [Selection diagram] FIG.