MARINE PROPULSION DEVICE

摘要

Disclosed is a hybrid marine propulsion device which comprises a main engine and a motor, has a more compact structure and achieves low fuel consumption by highly efficient drive control. The marine propulsion device comprises: a clutch (7), which is provided to the input shaft (6) of the main engine; a horizontal input/output shaft (8), which is connected to the clutch; a vertical shaft (11) which is joined to the input/output shaft by means of an upper bevel gear (9); a horizontal propeller axis (13) which is joined to a bottom tip of the vertical shaft by means of a lower bevel gear (12); and a propeller (14) which is located on the propeller shaft on the other tip side to where the propeller shaft is joined to the vertical shaft. The marine propulsion device turns the propeller around the vertical shaft, setting the propulsion direction. A motor-generator (20) is attached on top of a base (3) and directly connected to the other end side of the input/output shaft to where the vertical shaft is located. Motor propulsion is used in low revolution ranges and hybrid propulsion, whereby the motor assists the main engine, is used in high revolution ranges.