Outboard motor
AssigneeSuzuki Motor Corporation
InventorsTakuya Sato, Mitsuhiko Ohta, Masashi Takayanagi, Naoki Kawasaki
Life of this patent
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Abstract
An outboard motor having an oil pan positioned on the underside of the engine, and having an exhaust passage, a water supply passage for cooling water, and a wastewater passage extending down from the engine and passing near the oil pan. The exhaust passage, the water supply passage, and the wastewater passage are molded as a single unit with the oil pan, and provide a simple, lightweight structure that does not result in an increase in the number of parts or assembly man hours necessary for construction. The oil pan is protected from exhaust heat by the water passages, and a flush port to clean the cooling system is easily accessible.
Claims6
An outboard motor comprising:
- an engine having an exhaust manifold, an inlet for receiving cooling water to cool the engine, and an outlet for releasing the cooling water as waste water;
- and
- an oil pan unit under the engine, the oil pan unit comprising an oil reservoir, an exhaust passage communicating with the exhaust manifold, a cooling water passage communicating with the inlet to flow water from the inlet to the engine, and a waste water passage communicating with the outlet;
- wherein the cooling water passage includes a surface in contact with at least two sides of the exhaust passage, and the waste water passage includes a surface in contact with at least another side of the exhaust passage.
An outboard motor comprising:
- an engine having an exhaust manifold, an inlet for receiving cooling water to cool the engine, and an outlet for releasing the cooling water as waste water;
- and
- an oil pan unit under the engine, the oil pan unit comprising an oil reservoir, an exhaust passage communicating with the exhaust manifold, a cooling water passage communicating with the inlet, and a waste water passage communicating with the outlet;
- and
- further comprising a pressure valve for controlling the cooling water passage pressure, located adjacent a bottom surface of the oil pan unit.
Dependencies are inferred from the claim text.