JP2002070573A - Outboard motor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To protect an intake system from residual heat of a generator in an engine room of an outboard motor. SOLUTION: This outboard motor 1 is provided with a wall means 40 dividing the engine room inside 27 at least into two, an engine room communication part 29 of an air intake passage disposed in one room 27A divided by the wall means, and an AC generator 8 disposed in the other room 27B divided by the wall means.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an outboard motor in which an intake system of an engine and an AC generator are separated from each other to prevent the influence of heat.

[0002]

2. Description of the Related Art As the size of outboard motors increases and the requirements of hulls increase, so does the demand for onboard generators. On the other hand, an AC generator driven by a crankshaft in a belt is sometimes employed for space efficiency and cost reduction. In this case, a waterproof cover may be further provided in the engine room defined by the dome-shaped engine cover to prevent water from entering from the outside air intake for combustion of the engine cover to cover the generator.

[0003]

For example, Japanese Patent Application Laid-Open No. Hei 6-3
In the prior art disclosed in Japanese Patent No. 3790, the waterproof cover 58
In order to compensate for the lack of waterproofing (using reference numerals in the publication), an AC generator 46 is provided at a position away from the flow of intake air.
However, the generator cannot be cooled efficiently because there is no consideration for the hot air caused by the generator. In addition, when the engine is stopped, the hot air is trapped in the waterproof cover and the engine room, and when the engine is restarted, the hot air is also sucked by the intake negative pressure, which is not preferable.

[0004] In addition, securing the installation location of the generator in a narrow engine room and away from the flow of air to the engine intake intake hinders the degree of freedom in designing the outboard motor. Conversely, if the size of the engine room is increased in order to keep the engine room away from the air flow, the commerciality may be impaired. JP-A-10-1843 by the applicant
The technology disclosed in JP-A-77-77 and JP-A-11-198893 is one technology for solving this.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems. In an outboard motor employing an air-cooled belt drive type, a generator is actively cooled and hot air is discharged smoothly. It is another object of the present invention to provide an outboard motor having a configuration in which the influence of heat is reduced and the degree of freedom in arranging a belt-driven generator is not limited by the flow of air.

[0006]

According to a first aspect of the present invention, a cylinder block having a cylinder forming a part of a combustion chamber is arranged in a right and left V-shape. An outboard motor having a cylinder head, a cylinder head cover, and a vertically mounted crankshaft engine having a crankcase, and an engine cover provided to cover the periphery of the engine and forming an engine room for housing the engine Wall means for dividing the inside of the engine room into at least two parts, a communication portion in the engine room of an intake passage arranged in one chamber defined by the wall means, and the other defined by the wall means And an AC generator arranged in each of the chambers, and an outside air intake is provided in an engine cover portion of each of the chambers.

According to the first aspect of the present invention, a partition is provided between the room of the alternator and the chamber on the intake side in the engine room, so that it is possible to suppress hot air from flowing into the intake side by the partition. The arrangement of the alternator attached to the engine can be prevented from being restricted by the flow of the intake air, and the degree of freedom of the generator installation layout is improved. Also, when the generator is stopped, the hot air staying in the belt cover of the generator is suppressed and prevented from propagating to the intake passage side by the wall means,
It is sufficient to consider only the heat radiation and cooling measures in the room on the side of the intake passage defined by the wall means, to prevent the influence of the hot air of the generator on the intake air temperature after the operation is stopped, and to smoothly perform the restart of the engine. be able to.

According to a second aspect of the present invention, a cylinder block having a cylinder forming a part of a combustion chamber is arranged in a left-right V shape.
An engine having a cylinder head, a cylinder head cover and a cylinder head cover in each of the left and right cylinder blocks, a crankshaft vertically mounted engine having a crankcase, and an engine provided to cover around the engine and forming an engine room for housing the engine. An outboard motor including a cover, wherein a wall means for dividing the inside of the engine room into at least two parts, and a communication part in the engine room of an intake passage arranged in one chamber defined by the wall means; An AC generator disposed in the other chamber defined by the wall means, and an outside air intake port is provided in an engine cover portion of each chamber.

According to the present invention, since the outside air intake is provided for the AC generator, the degree of freedom of the arrangement of the AC generator is improved.
In addition, effective cooling of the alternator can be performed. Further, since the wall means for defining the inside of the engine room into two parts is disposed along the V-shaped outer portion of the engine, the V-shaped expanded outer portion can be effectively used, Since the overhang (the amount of inward protrusion, not the length in the vertical direction) of the partition wall constituted by the wall means can be small and the overhang is small, in the case of an engine cover having a deep downward bowl shape, it is necessary to manufacture it. It will be easier.

A third aspect of the present invention is characterized in that, in the second aspect, the wall means is disposed along an outer portion of the cylinder head cover of the engine. According to the third aspect, since the flat surface outside the cylinder head cover can be used,
Installation of the wall means and installation of the partition are facilitated.

According to a fourth aspect, in the third aspect, the cylinder head cover is made of a synthetic resin. According to the fourth aspect, since the cylinder head cover is made of resin, it is possible to reduce a case where an external force acts on the engine cover constituting the appearance of the outboard motor and a wear of the seal portion due to vibration. Also, less heat is transmitted.

According to a fifth aspect of the present invention, a cylinder block having a cylinder forming a part of a combustion chamber, an engine in which a crankshaft having a cylinder head, a cylinder head cover and a crankcase are arranged substantially vertically, and a portion surrounding the engine are covered. An outboard motor provided with an engine cover forming an engine room for housing an engine, wherein the wall means divides the engine room into at least two sections, and is disposed in one chamber defined by the wall means. A communication portion in the engine room of the intake passage, wherein the intake passage includes an intake silencer disposed above the cylinder block,
The generator is arranged in the other room defined by the wall means.

According to the fifth aspect of the present invention, since the intake silencer is disposed above the cylinder block, the intake silencer is disposed along the wall means using a relatively flat surface, so that the engine using the wall means is provided. The sealing performance of the compartment in the room can be improved. Also, since the relatively flat surface of the intake silencer is utilized, it is easy to extend the wall means from the starboard side to the port side of the engine.

According to a sixth aspect of the present invention, in the first, second, or fifth aspect, the interior of the engine room is divided into two sections by the wall means, including the exhaust manifold extending from the cylinder head. Features.

In the sixth aspect, the exhaust side including the exhaust manifold and the intake side are separated by the wall means, so that the influence of the exhaust gas on the ambient temperature on the intake side in the engine room can be reduced comprehensively.

According to a seventh aspect of the present invention, in the first, second or fifth aspect, the engine room divided into two by the wall means is connected to the intake side at the lower half of the engine room, and is connected to the intake side. Is characterized in that the opening area of the outside air intake is larger than the opening area on the side of the alternator.

According to the seventh aspect, by increasing the amount of fresh air on the intake side, the intake air temperature can be lowered and the hot air on the AC generator side can be smoothly sucked.

[0018]

Embodiments of the present invention will be described below with reference to the accompanying drawings. The drawings should be viewed in the direction of reference numerals. FIG. 1 is an explanatory longitudinal sectional side view of an outboard motor according to the present invention. The right side of the figure is the front Fr, and the left side is the rear Rr. The outline of the outboard motor 1 will be described with reference to FIG. Reference numeral 2 denotes an engine, in which cylinder blocks 3 in which one row is arranged in which horizontal cylinders 3a... Thus, a V-type six-cylinder engine is shown.

A piston 3b is fitted in each cylinder 3a, a combustion chamber 3c is defined on the top of the piston, and a cylinder head 4 is mounted on the rear end (left side in FIG. 1) of the cylinder block 3. A cylinder head cover 5 is provided at a rear end (left side in FIG. 1), and a skirt portion 6 is provided at a front end (right side in FIG. 1) of the cylinder block 3. Inside the skirt portion 6, a crankshaft 6a is disposed vertically.
An exhaust pipe 4a is suspended and extends below the cylinder head 4. On the right side of the crankcase 6 is a crankcase 7
A generator 8 (ACG) was attached to and supported at the upper right front portion of the bottom block 7.

Cylinder block 3 and crankcase 6
An oil pan 9 is provided on the lower surface of the
The engine 2 is supported by the mount case 11 arranged so as to cross the direction of the arrow. The lower portion of the crankshaft 6a is connected to a drive shaft 12, which runs vertically through an extension case (not shown) and drives a propulsion device (screw) (not shown) via a lower gear box (not shown). A swivel case with an outboard motor attached to the stern.

FIG. 2 is an explanatory cross-sectional plan view taken along line 2-2 of FIG. This will be described with reference to FIG. 2 together with FIG. A camshaft drive pulley 14 is connected to the upper end 6b of the crankshaft 6a, and the left and right cylinder head covers 4,
The timing belt 17 is wound around the driven pulleys 15 and 15 provided on the upper surface of the camshaft 4 and the driving pulley 14 via the intermediate pulleys 16. In FIG. 2, 4b,
Reference numeral 4b denotes an exhaust manifold.
a.

The upper end 6 of the crankshaft 6a
b, a generator driving pulley 18 is coaxially fixed on the camshaft driving pulley 14, a driven pulley 19 is disposed on the generator, and a belt 20 is connected to the pulley 19 and the aforementioned pulley 18. And the generator 8 is driven by driving the crankshaft 6a. The generator 8 is a body 8a in the embodiment.
, An upper slit 8b for introducing cooling air, an intermediate slit 8c for discharging at an intermediate portion, and a lower slit 8d for introducing cooling air at a lower portion.

A belt cover 21 for covering the pulleys 18 and 19 and the belt 20 is provided above the generator 8, and an opening 21 a is provided above the generator driven pulley 19 of the belt cover 21.
The upper part of the belt cover 21 above the generator driving pulley 18 was constituted by the lower surface of the rear half of the intake silencer 22 disposed above the crankcase 6 and the cylinder block 3. The intake silencer 22 has a communication port 22a facing rearward connected to a throttle 24 via a connection pipe 23, and the throttle 24 communicates with and connects to an intake manifold 25 vertically arranged behind the cylinder head cover 15, Distribute and supply fuel.

The above-described engine 2 and the equipment provided therearound are covered with an engine cover 26 constituting the appearance of the outboard motor, and an engine room 27 is defined in the engine cover. The engine cover 26 integrally includes a rear surface 26a, an upper surface 26b, a front surface 26c, and left and right side surfaces 26d. At the rear of the upper surface 26b of the engine cover 26, a concave step 2 which is one step lower is provided.
6e, an outside air inlet 28 is provided in this portion, and the outside air inlet 28 is connected to an inlet 29a of a suction guide 29 provided along the inner surface of the rear surface 26a of the engine cover 26. The opening 29b is provided downward. The concave step 26e provided at the rear of the upper surface 26b of the engine cover 26 is covered with a top cover 30, and the rear and upper surfaces of the cover 30 have slits 31 for taking in outside air.
Is provided.

The front part of the upper surface 26b of the engine cover 26
Concave steps 26f and 26g are provided on the front surface 26c, and the concave steps 2
6f is provided with an opening 21h facing the opening 21a of the belt cover 21, and the concave step 26g is separated from the front and rear by the vertical wall 2a.
6i and 26j are provided, and a labyrinth 26k is provided therebetween. The outside of the concave steps 26f and 26g is covered with a front cover 32, and a slit 33 for taking in outside air is provided below the front cover 32.
Are provided, and outside air is introduced into the front part of the engine cover 26 from the slits 33.

The passage area between the outside air intake port 28 and the suction port 29a of the suction guide 29 corresponding to a substantial engine room introduction port is larger than the passage area of the slit 33 on the front surface of the engine cover. Is supplied to the combustion chamber, and the intake air temperature can be reduced.

A wall means 40 is interposed between an inner periphery of an intermediate portion of the engine cover 26 in the front-rear direction and devices installed inside the engine cover, and the interior of the engine room 27 is divided into a front room 27A.
And the rear chamber 27B. The wall means is as specified in FIGS. 3 is a sectional view taken along line 3-3 of FIG. 1, FIG. 4 is a vertical side view of an explanatory main part of an outboard motor showing a side surface of the wall means 40, and FIG. And FIG. 6 is an enlarged view of a main part of FIG.

The interior of the engine room 27 is divided into front and rear,
In this embodiment, the wall means 40 for sealing the space is made of a long member having a solid cross section and a circular shape, and is formed of a string such as rubber or sponge having a high sealing property. The flexibility may be increased by using a member having a hollow cross section. As shown in FIG. 5, it is a rear view (front view) gate type, and has a top portion 41, left and right side portions 42, 4
2. Consisting of bilaterally symmetric oblique sides 43, 43 connecting them. Each part is integrally continuous and has a long string shape.

As shown in FIG. 3, the top 41 of the wall means 40 is disposed so as to cross the middle rear portion of the upper surface 22b of the intake silencer 22, and the upper surface 2 of the engine cover 26 is provided.
6b and the upper surface 22b are held while ensuring the sealing performance. As is apparent from FIGS. 3 and 5, the left and right oblique sides 43, 43 are connected to the left and right intake ports 22c, 2 of the intake silencer 22.
It passes outside the oblique side outside 2c. The left and right sides 42, 42 of the wall means 40 are interposed between the inside of the left and right side surfaces 26d, 26d of the engine cover 26 and both sides of the cylinder head cover 5, as shown in FIGS. , Hanging down and extending.

FIG. 4 is a vertical side view of an essential part of the outboard motor showing a side surface of the wall means. The wall means 40 has its side 4
2 is located between the outer surface of the cylinder head cover 5 and the inner surface of the engine cover 26, and the wall means 40 is provided vertically in front of the exhaust manifold 4b.
Thus, the suction guide 29 and the exhaust system that substantially constitute the suction port are partitioned. Therefore, the influence of the exhaust gas on the ambient temperature on the intake side in the engine room can be reduced comprehensively.

FIG. 6 is an enlarged sectional view of a main part of FIG. Upper surface 26b, concave step 26e, side surface 2 of engine cover 26
6d, 26d, inner surface and upper surface 26b, side surfaces 26d, 2
A rib 44 for engaging and holding each part of the wall means 40 is provided on the inner surface of the slope at the boundary of 6d, thereby improving the sealing performance of the wall means 40.

In the above description, the engine room 27 in the engine cover 26 of the outboard motor 1 is divided into front and rear chambers 27A and 27B by the wall means 40, and the engine room 27 is divided into the rear room 27A by the wall means 40. An intake system other than the intake passage is disposed, and a generator 8 is disposed in the front chamber 27B partitioned by the wall means 40. The heat generated by the operation of the generator 8 by the operation of the engine 2 is cooled by cooling air flowing from the openings 26f and 21a above the generator 8 and the vicinity of the labyrinth 26k. On the other hand, in the engine intake air, cold outside air flows in from the slit 31 through the guide 29, flows into the intake silencer 22, and is supplied to the fuel supply system. By the way, when the operation of the engine 2 is stopped, the operation of the generator 8 is also stopped. The generator 8 generates heat during operation, and residual heat is trapped in the belt cover 21 and the engine room 27.
Diffusion and release into.

In the present invention, the interior of the engine room 27 is divided into front and rear by wall means 40, and the front and rear chambers 27A and 27B
Are separated into separate chambers through the wall means 40, thereby preventing hot air from flowing into the suction-side chamber 27A due to residual heat of the generator 8 in the generator-side chamber 27B,
There is no increase in the ambient temperature of the chamber 27A on the intake side. Therefore, the engine can be smoothly restarted.
As described above, according to the present invention, the wall means can be divided into two rooms by disposing the wall means inside the engine cover, and the wall means can be installed using a flat portion of the outer wall such as the cylinder head cover. Therefore, it is easy to install the partition wall means.

The cylinder head cover 5 is made of a synthetic resin. The reason is that an external force may act on the engine cover 26, which is the outer shell member of the outboard motor, and the engine and accessories in the engine room 27 vibrate. There is a risk of rubbing with the head cover 5. In this case, the cylinder head cover 5 is made of synthetic resin, and the engine cover 26 is made of synthetic resin, so that wear is reduced.

[0035]

According to the present invention, the following effects are exhibited by the above configuration. According to a first aspect of the present invention, a cylinder block having a cylinder that forms a part of a combustion chamber is arranged in a V-shape, and the left and right cylinder blocks each have a cylinder head, a cylinder head cover, and a crankshaft having a crankcase. An outboard motor including a vertically mounted engine, and an engine cover provided to cover the periphery of the engine and forming an engine room for housing the engine, wherein wall means for dividing the engine room into at least two sections. A communication part in the engine room of the intake passage arranged in one chamber defined by the wall means, and an alternator arranged in the other chamber defined by the wall means, An outside air intake was provided in the cover.

According to the first aspect of the present invention, the partition is provided between the room of the alternator and the intake side chamber in the engine room. Can be prevented from being restricted by the flow of the intake air, and the degree of freedom of the generator installation layout is improved. Also, when the generator is stopped, the hot air staying in the belt cover of the generator is suppressed and prevented from propagating to the intake passage side by the wall means,
It is sufficient to consider only the heat radiation and cooling measures in the room on the side of the intake passage defined by the wall means, to prevent the influence of the hot air of the generator on the intake air temperature after the operation is stopped, and to smoothly perform the restart of the engine. be able to. In addition, it is sufficient to dispose the wall means for defining the engine room into two within the engine cover constituting the engine room, and the structure is simple and the influence of the hot air of the generator on the intake path is prevented with a minimum number of parts. be able to.

According to a second aspect of the present invention, a cylinder block having a cylinder forming a part of the combustion chamber is arranged in a left-right V shape.
An engine having a cylinder head, a cylinder head cover, and a cylinder head cover in each of the left and right cylinder blocks, a vertically mounted crankshaft having a crankcase, and an engine cover provided to cover the periphery of the engine and forming an engine room for housing the engine. An outboard motor comprising: a wall means for dividing an engine room into at least two sections; a communication section in an engine room of an intake passage arranged in one chamber defined by the wall means; And an alternator arranged in the other room defined by the above, and an outside air intake is provided in the engine cover of each room.

According to the second aspect, since the outside air intake is provided for the AC generator, the degree of freedom in the arrangement of the AC generator is improved.
In addition, effective cooling of the alternator can be performed. Further, since the wall means for defining the inside of the engine room into two parts is disposed along the V-shaped outer portion of the engine, the V-shaped expanded outer portion can be effectively used, Since the overhang (the amount of inward protrusion, not the length in the vertical direction) of the partition wall constituted by the wall means can be small and the overhang is small, in the case of an engine cover having a deep downward bowl shape, it is necessary to manufacture it. It will be easier. In addition, when the generator is stopped, the hot air accumulated in the belt cover of the generator is suppressed and prevented from propagating to the intake passage by the wall means, and the heat is radiated and cooled in the room on the intake passage side defined by the wall means. Only countermeasures need to be taken into consideration, and it is possible to prevent the influence of the hot air of the generator on the intake air temperature after the operation is stopped, and to smoothly restart the engine. Also, inside the engine cover that composes the engine room,
It is sufficient to dispose the wall means that defines the engine room in two along the outside of the V-type engine, and the structure is simple and the number of parts can prevent the hot air of the generator from affecting the intake path. .

A third aspect is the second aspect, wherein the wall means comprises:
It was arranged along the outside of the cylinder head cover of the engine.

According to the third aspect, since the flat surface outside the cylinder head cover can be used, installation of the wall means,
Installation of the partition walls becomes easy.

According to a fourth aspect, in the third aspect, the cylinder head cover is made of a synthetic resin.

According to the fourth aspect, since the cylinder head cover is made of resin, it is possible to reduce a case where an external force acts on the engine cover constituting the appearance of the outboard motor and a wear of the seal portion due to vibration. Also, less heat is transmitted.

A fifth aspect is a wall means for dividing the inside of the engine room of the outboard motor into at least two sections, and a communication section in the engine room of an intake passage arranged in one chamber defined by the wall means. The intake passage was provided with an intake silencer arranged above the cylinder block, and the generator was arranged in the other chamber defined by the wall means.

According to the fifth aspect of the present invention, since the intake silencer is disposed above the cylinder block, the intake silencer is disposed along the wall means using a relatively flat surface, so that the engine using the wall means is provided. The sealing performance of the compartment in the room can be improved. Also, since the relatively flat surface of the intake silencer is utilized, it is easy to extend the wall means from the starboard side to the port side of the engine. In addition, when the generator is stopped, the hot air accumulated in the belt cover of the generator is suppressed and prevented from propagating to the intake passage by the wall means, and the heat is radiated and cooled in the room on the intake passage side defined by the wall means. Only countermeasures need to be taken into account, and it is possible to prevent the influence of the hot air of the generator on the intake air temperature after the operation is stopped, and to smoothly restart the engine. In addition, it is sufficient to dispose the wall means for defining the engine room into two inside the engine cover constituting the engine room. The structure is simple and the number of parts is simple to prevent the hot air of the generator from affecting the intake path. be able to. Further, since it is sufficient to dispose the wall means inside the engine cover, a flat portion of the outer wall such as the cylinder head cover can be used, and the partition wall can be easily installed by the wall means.

According to a sixth aspect of the present invention, in the first, second or fifth aspect, the interior of the engine room is divided into two sections by the wall means, including the exhaust manifold extending from the cylinder head.

According to the sixth aspect, in addition to the effects of the first, second or fifth aspect, the exhaust side including the exhaust manifold and the intake side are separated by the wall means, so that the exhaust in the engine room due to the exhaust is provided. The influence of the ambient temperature on the intake side can be reduced comprehensively.

According to a seventh aspect of the present invention, in the first, second or fifth aspect, the engine room divided into two by the wall means is connected to the intake side at the lower half of the engine room and is connected to the intake side. The opening area of the outside air intake was larger than the opening area of the alternator.

According to a seventh aspect of the present invention, in addition to the effects of the first, second, or fifth aspect, by increasing the amount of fresh air on the intake side, the intake air temperature is lowered and the AC generator side is reduced. Hot air can also be suctioned smoothly.

[Brief description of the drawings]

FIG. 1 is an explanatory longitudinal sectional side view of an outboard motor according to the present invention.

FIG. 2 is an explanatory cross-sectional plan view taken along line 2-2 of FIG. 1;

FIG. 3 is a sectional view taken along line 3-3 in FIG. 1;

FIG. 4 is a vertical side view of an explanatory main part of an outboard motor showing a side surface of a wall means.

FIG. 5 is a longitudinal rear view showing a relationship between a wall means, an engine cover, and devices.

FIG. 6 is an enlarged view of a main part of FIG. 5;

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Outboard motor, 2 ... Engine, 3 ... Cylinder block, 3c ... Combustion chamber, 4 ... Cylinder head, 5 ... Cylinder head cover, 6 ... Skirt, 6a ... Crankshaft, 7 ... Clan case, 8 ... Generator ,
22 ... intake silencer, 26 ... engine cover, 27 ...
Engine room, 27A, 27B ... partitioned room,
31, 28, 29, 22 ... intake passage, 40 ... wall means,

────────────────────────────────────────────────── ───

[Procedure amendment]

[Submission date] July 6, 2001 (2001.7.6)

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] 0019

[Correction method] Change

[Correction contents]

A piston 3b is fitted in each cylinder 3a, a combustion chamber 3c is defined on the top of the piston, and a cylinder head 4 is mounted on the rear end (left side in FIG. 1) of the cylinder block 3. A cylinder head cover 5 is provided at a rear end (left side in FIG. 1), and a skirt portion 6 is provided at a front end (right side in FIG. 1) of the cylinder block 3. Inside the skirt portion 6, a crankshaft 6a is disposed vertically.
An exhaust pipe 4a is suspended and extends below the cylinder head 4. A crankcase 7 is disposed on the right side of the skirt portion 6, and a generator 8 (ACG) is mounted and supported on a front upper right portion of the crankcase 7.

[Procedure amendment 2]

[Document name to be amended] Statement

[Correction target item name] 0020

[Correction method] Change

[Correction contents]

An oil pan 9 is provided on the lower surfaces of the cylinder block 3 and the skirt portion 6, and the engine 2 is mounted on a mount case 10 disposed so as to cross the under cover 11.
I support. The lower part of the crankshaft 6a is the drive shaft 12
The drive shaft 12 vertically passes through an extension case (not shown) and drives a thruster (screw) (not shown) via a lower gear box (not shown).
Is a swivel case with an outboard motor attached to the stern.

[Procedure amendment 3]

[Document name to be amended] Statement

[Correction target item name] 0023

[Correction method] Change

[Correction contents]

A belt cover 21 for covering the pulleys 18 and 19 and the belt 20 is provided above the generator 8, and an opening 21 a is provided above the generator driven pulley 19 of the belt cover 21.
The upper part of the belt cover 21 above the generator driving pulley 18 was constituted by the lower surface of the rear half of the intake silencer 22 disposed above the crankcase 6 and the cylinder block 3. The intake silencer 22 connects a rearwardly facing communication port 22a to a throttle 24 via a connecting pipe 23, and the throttle 24 communicates with and connects to an intake manifold 25 vertically arranged behind the cylinder head cover 5 , Distribute and supply fuel.

[Procedure amendment 4]

[Document name to be amended] Statement

[Correction target item name] 0027

[Correction method] Change

[Correction contents]

[0027] and the inner circumference of the longitudinal direction intermediate portion of the engine cover 26, and interposed wall means 40 between the equipment which is furnished in the engine cover, the inside of the engine room 27 front chamber 27 B
Partitioning the rear chamber 27 A and. The wall means is as specified in FIGS. 3 is a sectional view taken along line 3-3 of FIG. 1, FIG. 4 is a vertical side view of an explanatory main part of an outboard motor showing a side surface of the wall means 40, and FIG. And FIG. 6 is an enlarged view of a main part of FIG.

[Procedure amendment 5]

[Document name to be amended] Statement

[Correction target item name] 0032

[Correction method] Change

[Correction contents]

In the above, the engine room 27 in the engine cover 26 of the outboard motor 1 is divided into the front and rear chambers 27 B and 27 A by the wall means 40, and in the rear room 27 A divided by the wall means 40. An intake system other than the intake passage of the engine is provided, and a generator 8 is provided in a front chamber 27B partitioned by the wall means 40. The heat generated by the operation of the generator 8 by the operation of the engine 2 is cooled by cooling air flowing from the openings 26f and 21a above the generator 8 and the vicinity of the labyrinth 26k. On the other hand, in the engine intake air, cold outside air flows in from the slit 31 through the guide 29, flows into the intake silencer 22, and is supplied to the fuel supply system. By the way, when the operation of the engine 2 is stopped, the operation of the generator 8 is also stopped. The generator 8 generates heat during operation, and residual heat is trapped in the belt cover 21 and the engine room 27.
Diffusion and release into.

[Procedure amendment 6]

[Document name to be amended] Statement

[Correction target item name] 0033

[Correction method] Change

[Correction contents]

In the present invention, the interior of the engine room 27 is
The front and rear chambers 27 are partitioned by means 40B, 27A
Is a separate room while both are sealed via the wall means 40.
The residual heat of the generator 8 in the room 27B on the generator side.
To prevent hot air from flowing into the suction side chamber 27A due to
There is no increase in the ambient temperature of the chamber 27A on the intake side. Subordinate
Thus, the engine restart can be smoothly performed.
Thus, in the present invention, the wall means is provided inside the engine cover.
It can be divided into two rooms by arranging
Steps should be installed on the flat part of the outer wall such as the cylinder head cover.
Because it can be used, the installation of the partition by the wall means
Easy.

[Procedure amendment 7]

[Document name to be amended] Drawing

[Correction target item name] Fig. 5

[Correction method] Change

[Correction contents]

FIG. 5

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) B63H 20/00 F02M 35/12 E F02M 35/12 B63H 21/26 G

Claims (7)

[Claims] A cylinder block having a cylinder forming a part of a combustion chamber, a crankshaft having a cylinder head, a cylinder head cover, and a crankcase are provided so as to cover a substantially vertical engine and the periphery of the engine. An outboard motor including an engine cover that forms an engine room for housing an engine, wherein wall means is provided between a communication portion in the engine room of an intake passage of the engine and an AC generator attached to the engine. An outboard motor characterized in that: 2. A crankshaft comprising: a cylinder block having a cylinder forming a part of a combustion chamber arranged in a V-shape on the left and right sides; a cylinder head, a cylinder head cover and a cylinder head cover on each of the left and right cylinder blocks; What is claimed is: 1. An outboard motor comprising a vertically mounted engine and an engine cover provided to cover the periphery of the engine and defining an engine room for housing the engine, wherein the wall partitions the engine room into at least two sections. Means, a communication portion in an engine room of an intake passage arranged in one chamber defined by the wall means, and an alternator arranged in the other chamber defined by the wall means, An outside air intake was provided in the engine cover part of each room,
An outboard motor characterized in that: 3. The outboard motor according to claim 2, wherein said wall means is provided along an outer portion of an engine cylinder head cover. 4. The outboard motor according to claim 3, wherein the cylinder head cover is made of a synthetic resin. 5. A cylinder block having a cylinder forming a part of a combustion chamber, a crankshaft having a cylinder head, a cylinder head cover, and a crankcase are provided so as to cover a substantially vertical engine and around the engine. An outboard motor comprising: an engine cover that forms an engine room that houses an engine; a wall unit that divides the inside of the engine room into at least two sections; and an outboard motor disposed in one chamber defined by the wall unit. A communication section in the engine room of the intake passage, wherein the intake passage includes an intake silencer disposed above the cylinder block, and an AC generator is disposed in the other chamber defined by the wall means, An outboard motor characterized in that: 6. An engine room including an exhaust manifold extending from a cylinder head by said wall means.
4. The outboard motor according to claim 1, wherein the outboard motor is divided into two sections. 7. The engine room divided into two by the wall means is connected to the intake side at the lower half of the engine room, and the opening area of the outside air intake on the intake side is reduced by the opening on the alternator side. 4. The outboard motor according to claim 1, wherein the outboard motor is larger than the area.