Outboard motor and vessel
An outboard motor includes an engine, a fan, and a top cowl assembly. The fan suctions air around the engine and discharges the air through a discharge port. The top cowl assembly includes a top cowl to house the engine and the fan, and a cover to cover at least a portion of an outside of the top cowl. The top cowl assembly includes an exhaust port to communicate with the discharge port via an exhaust channel. At least a portion of the exhaust channel is defined by a surface of the top cowl and a surface of the cover.
1 . An outboard motor comprising:
an engine;
a fan to suction air from around the engine and discharge the air through a discharge port; and
a top cowl assembly including:
a top cowl to house the engine and the fan;
a cover to cover at least a portion of an outside of the top cowl; and
an exhaust port to communicate with the discharge port via an exhaust channel, at least a portion of the exhaust channel being defined by a surface of the top cowl and a surface of the cover.
2 . The outboard motor according to claim 1 , wherein the exhaust port is located in a front portion of the top cowl assembly.
3 . The outboard motor according to claim 1 , wherein the exhaust channel has a descending slope from the discharge port toward the exhaust port.
4 . The outboard motor according to claim 1 , wherein a width of the exhaust port is larger than a height of the exhaust port.
5 . The outboard motor according to claim 1 , wherein the fan includes:
a rotor including a plurality of blades and rotatable around an axis extending in an up-down direction; and
a discharge channel structure that surrounds the rotor and defines a discharge channel extending to the discharge port; wherein
the discharge channel extends in a horizontal direction.
6 . The outboard motor according to claim 1 , further comprising a louver in the exhaust port.
7 . The outboard motor according to claim 6 , wherein a color of a front surface of the louver is different from colors of other areas of the louver.
8 . The outboard motor according to claim 1 , wherein the exhaust port is between the top cowl and the cover.
9 . The outboard motor according to claim 1 , wherein the exhaust channel does not overlap with the fan when viewed in an up-down direction.
10 . The outboard motor according to claim 1 , wherein the top cowl assembly includes:
an intake port to take in and supply air to the engine; and
an airflow inhibitor to inhibit an airflow from the exhaust channel to a space facing the intake port inside the top cowl assembly.
11 . The outboard motor according to claim 1 , wherein
the discharge port is eccentrically positioned in a right-left direction of the outboard motor; and
the exhaust port is located at a center of the outboard motor in the right-left direction.
12 . The outboard motor according to claim 1 , wherein the fan is drivable by the engine.
13 . A vessel comprising:
a hull; and
the outboard motor according to claim 1 attached to a rear portion of the hull.
14 . An outboard motor comprising:
an engine;
a fan to suction in air around the engine and discharge the air through a discharge port; and
a top cowl assembly including:
a top cowl to house the engine and the fan;
a cover to cover at least a portion of an outside of the top cowl; and
an exhaust port to communicate with the discharge port via an exhaust channel and located in a foremost portion of the top cowl assembly; wherein
at least a portion of the exhaust port is formed by a foremost edge of the cover.