To suppress air from being trapped in a water tube or a coolant flow path, an outboard motor includes a drive source including an electric motor, coolant tube through which a coolant for cooling the drive source flows, a water tube through which water from outside flows, and a heat exchanger having a coolant flow path through which the coolant from the coolant tube flows and a water flow path through which the water from the water tube flows formed therein. At least one of the coolant flow path and the water flow path includes a first flow path portion extending in a direction intersecting an upper-lower direction; a second flow path portion located at a position lower than the first flow path portion and extending in a direction intersecting the upper-lower direction; and a first folded portion connecting one end of the first flow path portion and one end of the second flow path portion. The first flow path portion is provided with a first connecting hole that is connected to the outside of the heat exchanger, and a ceiling surface forming the first flow path portion is inclined upward at an angle toward the first connecting hole.


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    Title :

    OUTBOARD MOTOR AND BOAT


    Additional title:

    AUSSENBORDMOTOR UND BOOT
    MOTEUR HORS-BORD ET BATEAU


    Contributors:
    EBUCHI JUN (author) / HORIE SHUSUI (author)

    Publication date :

    2025-06-11


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    B63H Schiffsantrieb oder Steuerung der Schiffe , MARINE PROPULSION OR STEERING / F01P Kühlung von Kraft- und Arbeitsmaschinen oder Kraftmaschinen allgemein , COOLING OF MACHINES OR ENGINES IN GENERAL



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