Outboard motor and boat propulsion device
AssigneeYamaha Hatsudoki Kabushiki Kaisha
InventorYoshihiko OKABE
Life of this patent
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Abstract
An outboard motor includes a cooling water flow path including an intake port to take in cooling water from outside the outboard motor and through which cooling water flows, and a water pump including an impeller and a pump shaft to rotate together with the impeller to pump the cooling water into the cooling water flow path. An inlet channel of the cooling water flow path from the intake port to the water pump is located in front of the water pump and extends along a rotation axis of the pump shaft, and an inlet that allows the passage of the cooling water and prevents entry of foreign objects is located inside the inlet channel.
Claims11
An outboard motor to be mounted on a hull, the outboard motor comprising:
- a cooling water flow path including an intake port to take in cooling water from outside the outboard motor and through which cooling water flows;
- and
- a water pump including an impeller and a pump shaft to rotate together with the impeller to pump the cooling water into the cooling water flow path;
- wherein
- an inlet channel of the cooling water flow path from the intake port to the water pump extends along a rotation axis of the pump shaft in front of the water pump;
- and
- a filter to allow passage of the cooling water and prevent entry of foreign objects is located inside the inlet channel.
A boat propulsion device provided on a hull, the boat propulsion device comprising:
- a cooling water flow path including an intake port to take in cooling water from outside the boat propulsion device and through which cooling water flows;
- and
- a water pump including an impeller and a pump shaft to rotate together with the impeller to pump the cooling water into the cooling water flow path;
- wherein
- a filter to allow passage of the cooling water and prevent entry of foreign objects is located at the intake port;
- and
- the filter is located on a rotation axis of the pump shaft in front of the water pump.
Dependencies are inferred from the claim text.