A marine propulsion device includes an electric motor, a propeller shaft, a lower case, a coolant circulation passage, and a pump. The propeller shaft is driven by the electric motor. The lower case houses the propeller shaft. Coolant for cooling the electric motor flows through the coolant circulation passage. The coolant circulation passage includes a cooling passage, a first connection passage, a heat exchange passage, and a second connection passage. The cooling passage is arranged through the electric motor. The first connection passage is connected to the cooling passage and extends from the cooling passage toward the lower case. The heat exchange passage is connected to the first connection passage and arranged through the lower case. The second connection passage is connected to the heat exchange passage and extends from the heat exchange passage to the cooling passage. The pump circulates the coolant through the coolant circulation passage.


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    Titel :

    MARINE PROPULSION DEVICE


    Autor / Urheber :

    Medientyp :

    Patent


    Format :

    Elektronische Ressource



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