Suzuki Kabushiki Kaisha

Kazuo Mineno

Yukihiro Yoshikawa

Nobuyuki Shomura

Takeshi Toyama

Keisuke Daikoku

Naoki Kawasaki

An engine unit of an outboard motor comprises an engine body, a crank case in which a crankshaft is vertically perpendicularly arranged in a usable mounted state of the outboard motor, a cylinder block which is disposed to a rear side of the crank case and in which cylinders are arranged, a cylinder head disposed to a rear side of the cylinder block, a magnet device mounted to a top end portion of the crankshaft projecting upward and comprising a stator and a flywheel to which a rotor is integrally formed. In the engine unit, the crankshaft is supported by a bearing boss disposed to a mating portion of the cylinder block and the crank case through a bearing means and an oil seal is disposed between the bearing boss and the bearing means, and the magnet device is mounted to the engine body through the stator through a mounting portion. A diameter of the mounting portion of the stator is to be larger than an outer diameter of the oil seal.

Engine unit of outboard motor

An outboard motor includes an engine disposed above an engine holder in a mounted usable state of the outboard motor, and the engine comprises a crankcase in which a crankshaft extends vertically perpendicularly, a cylinder block disposed rear side of the crankcase, and a cylinder head disposed rear side of the cylinder block. A starter motor mounted to a front surface of the crank case and an oil filter is further mounted to the crank case at a portion below the starter motor.

Outboard motor

An outboard motor generally comprises an engine holder, an engine disposed above the engine holder, an oil pan disposed below the engine holder, and an engine cover covering the engine holder, the engine and the oil pan so as to define a space between the engine and the engine cover. The engine includes a crankcase in which a crankshaft extends vertically perpendicularly in a usable state of the outboard motor, a cylinder block disposed rear side of the crankcase, a cylinder head disposed rear side of the cylinder block, an intake unit disposed to one surface side of the engine, an exhaust unit disposed to another one surface side thereof and arranged so as to project outward from the another one surface side of the engine as an exhaust projection portion, and an electrical equipment part. The above-mentioned space between the engine and the engine cover includes a space portion defined by the cylinder head, the exhaust projection portion and the engine cover and the electrical equipment part is disposed in this space portion.

An outboard motor to be mounted to a hull comprises an engine holder connected to the hull, an engine mounted on the engine holder in a perpendicular fashion in which a crank shaft of the engine extends vertically, an oil pan mounted to a lower portion of the engine holder, and an oil pump for supplying an oil stored in the oil pan to the engine, in which the engine including a crank case, a cylinder block and a cylinder head, which are all secured to the engine holder by fastening bolts for improving the rigidity of a mounted engine and that of an assembled outboard motor and simplifying the structure thereof.

An outboard motor comprises an engine of vertical type in which a crank shaft is disposed vertically in an installed state of the engine, an engine holder supporting the engine, an oil pan which is disposed below the engine through the engine holder and in which an oil is accumulated, and a lubricating device for lubricating the oil from the oil pan to an inside of the engine. The lubricating device comprises an oil pump mounted to a lower side portion of the engine holder and adapted to suck the oil accumulated in the oil pan, an oil suction passage and an oil discharge passage. The oil suction passage and oil discharge passage extend in parallel to each other from the oil pump and are formed integrally with an inside portion of the engine holder.

Growing community of inventors

Hamamatsu, Japan

Kazuo Mineno