A vessel propulsion apparatus (2) includes an engine (5) that rotates a crankshaft (23) in a forward rotation direction, a rotation speed detector (25, 74) that detects a rotation speed of the crankshaft (23), a propeller shaft (19) coupled to a propeller (4), a shift switch (20) that switches between a engaged state and a neutral state, a shift state detector (33), an intake passage (50), a throttle valve (48), an intake pressure sensor (51), and a controller (6). The controller (6) determines that the crankshaft (23) is reversely rotating by an external force input from the propeller shaft (19) when a predetermined reverse rotation recording condition is satisfied, and stores reverse rotation information. The reverse rotation recording condition includes a condition that an intake pressure after the shift switch (20) switches from a neutral state to a engaged state while the crankshaft (23) rotates in the forward rotation direction is larger than a value equal to or higher than atmospheric pressure.
VESSEL PROPULSION APPARATUS
SCHIFFSANTRIEBSVORRICHTUNG
APPAREIL DE PROPULSION DE NAVIRE
2018-10-03
Patent
Elektronische Ressource
Englisch
IPC: | B63H Schiffsantrieb oder Steuerung der Schiffe , MARINE PROPULSION OR STEERING / F02D CONTROLLING COMBUSTION ENGINES , Steuern oder Regeln von Brennkraftmaschinen / G05D SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES , Systeme zum Steuern oder Regeln nichtelektrischer veränderlicher Größen |
Propeller for vessel propulsion apparatus and vessel propulsion apparatus
Europäisches Patentamt | 2023
|Europäisches Patentamt | 2016
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