JPH04134635U - outboard engine - Google Patents

Abstract

(57) [Summary] [Purpose] It is possible to downsize the casing that covers the outboard engine and reduce intake resistance. [Structure] A supercharger 4 is arranged between a carburetor 5 and an intake manifold 3, the crankshaft is oriented vertically, the cylinder axis is arranged almost horizontally, and the intake manifold 3 is arranged horizontally on one side. The engine 2 is an outboard motor, and the supercharger 4 is arranged at a position offset toward the intake manifold 3 from the center line of the engine plane on the crankcase side.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

This invention relates to an outboard motor engine.

0002

[Prior art and its problems]

Installing a supercharger to increase the output of your outboard engine Then, the casing that covers the outer circumference of the engine becomes large due to this supercharger. There is a problem that The problem of increased intake resistance if the supercharger is installed incorrectly There was a point.

0003

[Means to solve the problem]

This invention was devised in view of the above-mentioned conventional problems, and it reduces the size of the casing. Also, it is possible to reduce the air intake resistance of an outboard motor equipped with a supercharger that can reduce intake resistance. The purpose is to provide a The supercharger is installed, the crankshaft is oriented vertically, and the cylinder head is placed at the stern. Place the cylinder axis almost horizontally with the crankcase facing the shipowner, and An outboard motor engine in which the intake manifold is arranged on one side along the engine axis. In the engine, the supercharger is connected to the crankcase side of the engine. By arranging it at a position offset from the center line of the plane toward the intake manifold side, be.

0004

[Effect]

Turn off the supercharger from the horizontal plane of the engine to the intake manifold side Because the super charger is set and arranged, the super charger does not protrude. The casing can be made smaller, and the carburetor can be used as a supercharger suction. It can be installed smoothly into the mouth, reducing intake resistance.

[0005]

【Example】

Hereinafter, embodiments of the present invention will be described based on the drawings. FIG. 2 is a schematic configuration diagram of the outboard motor, and FIG. 1 is a plan configuration diagram thereof. In the figure, the upper part of the outboard motor 1 is surrounded by a casing K. The engine 2 has a crankshaft arranged vertically. The cylinder head 2a faces the stern side, and the crankcase 2b faces the ship owner. , the cylinder shaft is arranged almost horizontally, and the suction shaft connected to the cylinder head 2a The air manifold 3 is installed almost horizontally on one side of the engine 2.

[0006] In addition, a supercharger 4 is disposed on the crankcase 2b side. A carburetor 5 and an intake silencer box 6 are connected to the suction port of the supercharger 4. ing. As shown in FIG. 1, this supercharger 4 1, it is offset toward the intake manifold 3 side, and relative to the plane center line C1. The center line C2 of the supercharger is located on the lower side in FIG. or , the carburetor 5 and the intake silencer box 6 are provided on the side opposite to the intake manifold 3. It is being

[0007] Furthermore, the cylinder block of engine 2 is attached to the top surface of oil pan 7. Further, the oil pan 7 is attached to the upper surface of the exhaust guide 8. Exhaust The bottom side of the Zost guide 8 is a drive case 9 in which the drive shaft is vertically inserted. A screw 10 is provided at the bottom of the drive case 9.

[0008] In this example, the supercharger 4 is aligned with the plane center line C1 of the engine 2. Since the supercharger 4 is installed in an offset position, the supercharger 4 does not protrude. Therefore, the casing K can be made smaller, and the supercharger 4, the carburetor 5 and the intake silencer box 6 can be connected in a straight line. Smoothly assemble the carburetor 5 and intake silencer box 6 to the suction port of the percharger 4. It is possible to reduce the intake resistance, which in turn improves the output. can be done.

[0009]

[Effect of the idea]

This invention places a supercharger between the carburetor and the intake manifold, and The rank axis is oriented vertically, the cylinder head is toward the stern, and the crankcase is toward the owner. The cylinder axis is arranged almost horizontally, and the intake air is placed on one side along the cylinder axis. In an outboard engine equipped with a manifold, the supercharger the intake manifold from the plane center line of the engine on the crankcase side. By locating it in a position offset to the side, the supercharger comes out. The outer diameter of the casing that covers the engine should be small without tension. It is also possible to smoothly assemble the carburetor etc. to the suction port of the supercharger. This makes it possible to reduce intake resistance and improve engine output. can.

[Brief explanation of drawings]

FIG. 1 is a schematic plan configuration diagram of an outboard motor engine.

FIG. 2 is a schematic side view of the outboard motor.

[Explanation of symbols]

1 Outboard motor 2 engine 2a cylinder head 2b crank case 3 Intake manifold 4 Supercharger 5 Vaporizer 6 Intake silencer box

Claims (1)

[Scope of utility model registration request] [Claim 1] A supercharger is disposed between a carburetor and an intake manifold, and the cylinder axis is arranged almost horizontally with the crankshaft oriented vertically, the cylinder head facing the stern side, and the crankcase facing the ship owner side. In an outboard engine in which the intake manifold is arranged on one side along the axis, the supercharger is arranged at a position offset from the plane center line of the engine on the crankcase side toward the intake manifold side. An outboard motor engine that is characterized by: