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US 12,258,894 B2Granted
Marine propulsion device and marine vessel
AssigneeYamaha Hatsudoki Kabushiki Kaisha
InventorsKimitaka Saruwatari, Kenji Yukishima, Yu Wakamizu
Life of this patent
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Abstract
A marine propulsion device includes an engine, an exhaust pipe to allow exhaust gas of the engine to pass through the exhaust pipe, and a cooling water supply passage to supply cooling water for the engine into the exhaust pipe toward a downstream side in a flow direction of the exhaust gas and cause the cooling water to flow circumferentially along an inner peripheral surface of the exhaust pipe.
Claims20
A marine propulsion device comprising:
- an engine;
- an exhaust pipe to allow exhaust gas of the engine to pass through the exhaust pipe;
- and
- a cooling water supply passage to supply cooling water for the engine into the exhaust pipe toward a downstream side in a flow direction of the exhaust gas and cause the cooling water to flow circumferentially along an inner peripheral surface of the exhaust pipe.
1 more element
A marine vessel comprising:
- a hull;
- and
- a marine propulsion device attached to the hull;
- wherein
- the marine propulsion device includes:
- an engine;
- an exhaust pipe to allow exhaust gas of the engine to pass through the exhaust pipe;
- and
- a cooling water supply passage to supply cooling water for the engine into the exhaust pipe toward a downstream side in a flow direction of the exhaust gas and cause the cooling water to flow circumferentially along an inner peripheral surface of the exhaust pipe.
6 more elements
Dependencies are inferred from the claim text.