Suzuki Motor Corporation

Suzuki Kabushiki Kaisha

Mitsuhiko Ohta

Naoki Kawasaki

Toshiaki Ikeya

Atsushi Noda

Masashi Takayanagi

Takuya Sato

Yoshiaki Yuda

Masayuki Nisimura

An oil chamber at an upper portion of an outboard engine provides lubrication to a valve gear device within a cylinder head of the outboard engine. Oil passages provide engine oil into the oil chamber. Oil dropping passages on the bottom of the oil chamber permits the oil to flow vertically from the oil chamber into the cylinder head. The oil dropping passages are positioned above the valve end sections to provide sufficient lubrication to the valve end sections of the engine. As a result, the valve end sections are made from material of normal hardness, thereby reducing manufacturing costs.

Lubricating construction for outboard motor

An outboard motor air intake device having a throttle body is located essentially horizontally in front of the engine, and includes a surge tank located on a side part of the throttle body, and an air intake manifold with multiple air intake pipes which extend on one side of the engine from the surge tank to each of the cylinders. A throttle valve is located in the throttle body and the linkage mechanism that operates this throttle valve is located opposite to the engine's air intake manifold, so that the linkage is easy to assemble and maintain.

Air intake system for outboard motor

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.

Outboard motor

This invention is an outboard motor exhaust device compatible with a small, lightweight cylinder block, which simplifies the exhaust manifold assembly and allows greater precision of assembly. The engine of an outboard motor is located above an engine holder, and comprises a horizontally assembled cylinder head, cylinder block, and crank case. An air intake device is located on one side of the cylinder block, and the exhaust manifold comprising the exhaust device is located on the opposite side of the cylinder block from the air intake device. A side surface of the cylinder head and a side surface of the engine holder are coplanar and form a support for the exhaust manifold.

Exhaust system for outboard motor

An air intake device for a vertically oriented multi-cylinder outboard boat engine having an engine block, a crankcase, and vertically spaced fuel intake ports. The air intake device includes a surge tank rigidly attached to the crankcase and having a plurality of vertically spaced air intake union pipes extending from the surge tank, and an intake manifold cover rigidly attached to the engine block and having a plurality of vertically spaced air intake union pipes extending from the intake manifold cover. A flexible air intake hose is connected between the air intake union pipes extending from the surge tank and the air intake pipes extending from the intake manifold cover.

Air intake device for outboard boat engine

An air intake device for a vertically oriented multi-cylinder outboard boat engine having vertically spaced fuel intake ports. The air intake device includes a surge tank, a plurality of vertically spaced air intake pipes extending from the surge tank to the engine intake ports. The intake pipes are inclined downward from the surge tank. The bottom tangent of the lowermost intake pipe is aligned with the bottom surface of the surge tank and the vertical length of the surge tank is less than the total length from the uppermost intake port to the lowermost intake port.

An air intake device for a vertically oriented multi-cylinder outboard boat engine having an engine block, a crank case, and vertically spaced fuel intake ports. The air intake device includes a surge tank attached to the crank case and having vertically spaced air intake pipes extending from the surge tank to the engine intake ports. An insulation layer is mounted between the surge tank and the crank case.

A fuel supplying system for a vertical engine provided with multiple cylinders arranged in a vertical direction, respectively, in an installed state of the engine and a crankshaft disposed vertically therein, comprising a plurality of fuel supplying means disposed for the cylinders, respectively, said fuel supplying means being divided into plurality of groups. A plurality of fuel pumps each disposed for each of said groups of the fuel supplying means, said fuel pumps being arranged below the fuel supplying means at a lowest position of the corresponding each group of the fuel supplying means. Further, a plurality of fuel diverging means operatively connecting the fuel pumps to the each group of the fuel supplying means, respectively, said fuel diverging means being connected to each other through connecting means.

Growing community of inventors

Shizuoka-Ken, Japan

Mitsuhiko Ohta