JP2000186638A - Intake device for internal combustion engine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve cooling efficiency and workability during mounting and demounting by a method wherein an opening part is formed in an air cleaner and a control unit is mounted on a metal mounting member. SOLUTION: An air cleaner 12 comprises the air cleaner bottom case 2 of a lower molded body 1; an air cleaner opening case 8 of an upper molded body 7, and an air cleaner upper case 11. A filter 13 is arranged at its internal part. Further, a metallic plate 23 is insert-molded in the opening part 22 of the air cleaner upper case 11 and a control unit 24 is removably mounted on the metallic plate 23. This constitution arranges the control unit 24 in an engine room and in the vicinity of a throttle sensor 19C and an injection valve and facilitate mounting and demounting thereof. Further, the control unit 24 is high-efficiently cooled through the metallic plate 23 by intake air of an engine flowing through the air cleaner 12.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an intake system for an internal combustion engine suitably used in an intake system of, for example, an automobile engine.

[0002]

2. Description of the Related Art In general, an internal combustion engine such as an automobile engine is provided with an intake device for sucking external intake air into each cylinder of the engine. This intake device is provided together with the engine body in an engine room of an automobile or the like. Are located.

[0003] As an intake device for an engine according to this type of prior art, an air cleaner is defined by a filter for filtering intake air into an inflow chamber and an outflow chamber, and the interior is provided on the outflow chamber side of the air cleaner. 2. Description of the Related Art There is known a collector including a collector through which intake air flows, and a plurality of manifolds extending from the collector toward each cylinder of the internal combustion engine and guiding intake air flowing out from the collector to each cylinder of the internal combustion engine ( For example, JP-A-8-334070 and the like.

The intake device includes a throttle device for adjusting an intake air amount of the engine in accordance with a driver's accelerator operation amount, a flow sensor for detecting an intake air amount adjusted by the throttle device, A throttle sensor for detecting a valve opening of the throttle device is provided.
Further, a plurality of injection valves for injecting fuel into each cylinder of the engine are arranged on the distal end side of the manifold, and these injection valves are connected to a control unit for engine control together with a flow rate sensor and a throttle sensor.

In this case, the control unit is disposed in a cab of an automobile or the like, and is connected to a flow sensor, a throttle sensor, an injection valve, and the like using a plurality of leads extending from the cab to an engine room.

During operation of the engine, when the intake air is sucked into each cylinder via an air cleaner, a collector, a manifold, etc., the flow rate is adjusted by a throttle device in accordance with the driver's accelerator operation amount. . Further, the control unit outputs a fuel injection signal to each injection valve according to a detection signal output from a flow rate sensor or a throttle sensor, and thereby controls the operating state of the engine.

As another conventional technique, for example, in order to simplify a lead wire or the like connected to the control unit, the control unit is mounted on an inner side or an outer side of an air cleaner, and the control unit is mounted in an engine room. There is also known an intake device for an engine configured to be disposed near a flow rate sensor, a throttle sensor, an injection valve, and the like (for example, Japanese Patent Application Laid-Open No. 6-81735).

[0008]

In the above-mentioned prior art, a control unit is provided in a cab of a vehicle, and a lead wire is provided between the control unit and a flow sensor, a throttle sensor, an injection valve and the like in an engine room. And so on.

For this reason, when assembling a vehicle or the like,
It is necessary to route a number of long lead wires etc. between the cab and the engine room and fix each part of these lead wires etc. to the vehicle side using a number of mounting brackets etc. However, there is a problem that these operations cannot be performed efficiently, and the number of parts for lead wires increases.

In the cab, the control unit must be mounted in an inconspicuous place, for example, behind a front panel (so-called dashboard), inside a console box, or the like. Workability at the time of carrying out is easily reduced.

On the other hand, in other conventional techniques, the control unit is simply fixed to the inner side or the outer side of the air cleaner. Therefore, for example, when the control unit is fixed to the inner surface of the air cleaner, it is necessary to draw a lead wire into the case where airtightness is required and connect it to the control unit, which complicates the structure of the intake device. Become In addition, the air cleaner must be removed when attaching and detaching the control unit.

When the control unit is simply fixed to the outer surface of the air cleaner, the control unit is exposed in the engine room, so that the temperature of the control unit is likely to be high due to heat transmitted from the engine. , Its reliability decreases.

The present invention has been made in view of the above-mentioned problems of the prior art, and an object of the present invention is to enable a control device to be stably mounted near an internal combustion engine without reducing its reliability. It is an object of the present invention to provide an intake device for an internal combustion engine that can simplify a lead wire or the like extending from a control device and can easily perform attachment and detachment work of the control device.

[0014]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention provides an air cleaner which is defined by a filter for filtering intake air into an inlet chamber and an outlet chamber.
A collector provided on the outflow chamber side of the air cleaner and through which the intake air flows, and a plurality of manifolds extending from the collector toward the respective cylinders of the internal combustion engine and guiding the intake air flowing out of the collector to the respective cylinders of the internal combustion engine This is applied to an intake device for an internal combustion engine comprising:

A feature of the structure adopted by the invention of claim 1 is that an opening for mounting a control unit is provided on the outflow chamber side of the air cleaner, and the opening is used for resin molding of the air cleaner. The metal mounting member for mounting the control unit is insert-molded integrally.

With this configuration, the control unit can be attached to the air cleaner at the position of the opening, and the control unit can be arranged near various sensors and actuators provided on the internal combustion engine side. During operation of the internal combustion engine, the control unit can be cooled by the intake air of the internal combustion engine flowing through the air cleaner through the opening or the metal mounting member.

According to a second aspect of the present invention, a casting portion cast into the air cleaner at the time of insert molding is provided on an outer edge side of the metal mounting member.
The metal mounting member can be insert-molded stably to the air cleaner, and the air-tightness of the air cleaner can be maintained even at a joint portion between the two.

Further, in the invention according to claim 3, the metal mounting member is a flat metal plate closing the opening, and the metal plate has an inner surface facing the outflow chamber and an outer surface facing the outside of the air cleaner. are doing.

Thus, the control unit can be mounted on the outer surface of the air cleaner via the metal plate. During operation of the internal combustion engine, the control unit is cooled by the intake air flowing through the air cleaner via the metal plate. Can be.

According to a fourth aspect of the present invention, the metal plate is provided with a screw hole for fixing the control unit, so that the control unit is detachably mounted on the metal plate using, for example, mounting screws. Can be.

Further, the metal mounting member is a metal frame having a plurality of screw holes formed so as to surround the opening, so that the control unit can open the air cleaner. It can be arranged in a part and can be detachably attached to the metal frame using attachment screws or the like.

Further, the metal mounting member may be a metal bush with a screw hole provided around the opening, and the metal mounting member may be screwed to the metal bush with the screw hole. The control unit can be fixed in the opening of the air cleaner using screws or the like.

[0023]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment according to the present invention will be described below in detail with reference to FIGS. 1 to 6 show a first embodiment according to the present invention. In the present embodiment, an intake device such as an automobile engine will be described as an example.

Reference numeral 1 denotes a lower molded body made of resin constituting a lower side of the intake device. The lower molded body 1 has a substantially box-shaped air cleaner bottom case 2 having an open upper side as shown in FIG. A substantially box-shaped collector bottom case 3 having an opening, and a manifold lower divided body extending, for example, two to the left and right from the collector bottom case 3 corresponding to each cylinder (not shown) of the engine. Are integrally formed.

The two lower manifold divisions 4 extending in the left direction in FIG. 2 are disposed in the air cleaner bottom case 2 at the intermediate portion in the longitudinal direction. In addition, the manifold lower divided body 4 is formed in a substantially arc shape in which a portion near the base end side is opened upward, the front end side is formed in a substantially cylindrical shape, and, for example, four injection valves are provided on the front end side. Mounting holes 5, 5,... And mounting portions 6, 6 to the engine side are provided.

Reference numeral 7 denotes a resin upper molded body provided on the lower molded body 1 by means of, for example, vibration welding, high frequency welding, or the like. The upper molded body 7 is, as shown in FIGS. 1, a substantially square air cleaner opening case 8 opened upward and downward, a substantially box-shaped collector upper case 9 opened at the lower side, and two collector left and right sides in FIG. The manifold upper divided bodies 10, 10, ..., which are extended and have a substantially arc-shaped cross section opened downward.
And are integrally formed.

Here, the air cleaner opening case 8 is joined to the air cleaner bottom case 2. The upper collector case 9 is joined to the lower collector case 3. Further, the two manifold upper divisions 10 extending in the left direction in FIG. 2 are disposed in the air cleaner port case 8 at a middle portion in the length direction. The left and right manifold upper divisions 10 are respectively joined on the manifold lower divisions 4.

Numeral 11 denotes an air cleaner upper case detachably mounted on the air cleaner opening case 8. As shown in FIGS. 3 and 4, the upper side of the air cleaner upper case 11 is, for example, substantially open at the lower side using a resin material or the like. It is formed in a box shape.

Numeral 12 denotes an air cleaner for filtering the intake air of the engine. The air cleaner 12 is formed as a substantially box-shaped hollow body by joining the air cleaner bottom case 2, the air cleaner opening case 8 and the air cleaner upper case 11. I have.

A filter 13 is detachably mounted between the air cleaner opening case 8 and the air cleaner upper case 11, and the filter 13 divides the inside of the air cleaner 12 into a lower inflow chamber 14 and an upper outflow chamber 15. It is defined. Further, the air cleaner bottom case 2 is provided in the inflow chamber 14.
The outside air flows in from an outside air introduction pipe 16 provided in the air conditioner. The outside air becomes intake air, is filtered by a filter 13, and then flows out of an outflow chamber 15 to a duct 18 described later.

Reference numeral 17 denotes a collector connected to the outflow chamber 15 side of the air cleaner 12 through a duct 18 and a throttle device 19. The collector 17 is composed of a collector bottom case 3 and a collector upper case 9 as shown in FIG. It is configured. A flow sensor (not shown) for detecting the flow rate of the intake air flowing out of the outflow chamber 15 into the collector 17 is provided in the duct 18.

Further, the throttle device 19 has a substantially cylindrical housing 19A, a valve body 19B which is opened and closed according to the accelerator operation amount of the driver and adjusts the flow rate of intake air flowing through the housing 19A. It comprises a throttle sensor 19C in FIG. 1 for detecting the opening of the valve body 19B.

Reference numerals 20, 20,... Denote, for example, four manifolds extending from the collector 17 to the respective cylinders of the engine. Each of the manifolds 20, as shown in FIG. The front end side is connected to each cylinder of the engine using the mounting portion 6. In the vicinity of the tip of each manifold 20, the injection valves 21 and 21 mounted in the injection valve mounting holes 5 are provided.
The fuel is injected from each of the cylinders 1 to each cylinder of the engine.

Reference numeral 22 denotes a substantially rectangular opening provided on the upper surface side of the air cleaner upper case 11 constituting the air cleaner 12 for mounting a control unit 24 to be described later. As shown in FIG. 6, a metal plate 23 described later is provided integrally.

Reference numeral 23 denotes a metal plate as a metal mounting member provided integrally with the opening 22 of the upper air cleaner case 11. The outer peripheral side of the metal plate 23 is provided inside the upper air cleaner case 11 by means such as insert molding. Is provided over the entire circumference. Thus, when the metal plate 23 is cast, the adhesion and the integrity between the metal plate 23 and the opening 22 of the upper air cleaner case 11 are enhanced.

The metal plate 23 has an inner surface facing the outflow chamber 15 in the upper air cleaner case 11 and an outer surface facing the outside of the upper air cleaner case 11. Further, on the outer surface side of the metal plate 23, for example, four screw holes 23B, 23B,... Into which mounting screws 25 (see FIG. 1) for the control unit 24 are screwed are provided as bottomed holes.

Reference numeral 24 denotes a control unit for controlling the engine detachably attached to an intake device of the engine.
The control unit 24 includes a metal unit case 24A, input / output connectors 24B and 24B, and four mounting portions 24C, 24C,... Formed with screw insertion holes, as shown in FIGS. And

The control unit 24 includes various sensors such as a flow sensor and a throttle sensor 19C using, for example, a lead wire (not shown) and a connector 24B.
It is connected to various actuators such as the injection valve 21 and the like.
The operation state of the engine is controlled by outputting an injection signal to each injection valve 21 in accordance with a detection signal output from the above.

In the control unit 24, each mounting portion 24C is detachably mounted on the outer surface side of the metal plate 23 using mounting screws 25 and the like, and the mounting surface side is in contact with the metal plate 23 over the entire surface. Holding. The control unit 24 is disposed in an engine room (not shown) of the vehicle together with the intake device of the engine. During operation of the engine, the metal plate 2 is moved by the intake air flowing through the outlet chamber 15 of the air cleaner 12.
3 is cooled.

The intake device for an engine according to the present embodiment has the above-described configuration, and its operation will be described below.

First, when assembling the vehicle, the lower molded body 1,
The upper molded body 7 and the like are attached to the engine using the respective attachment portions 6, whereby the four manifolds 20 are connected to the respective cylinders of the engine, and the air cleaner 12, the collector 17 and the like are positioned in the engine room. .

The control unit 24 is mounted on the metal plate 23 of the air cleaner 12, is disposed near the flow sensor, the throttle sensor 19C, the injection valve 21, and the like, and is connected to these components using a lead wire or the like. .

During the operation of the engine, when the intake air flows from the outside air introduction pipe 16 into the inflow chamber 14 of the air cleaner 12 as shown by an arrow A in FIG. After flowing out into the outflow chamber 15, it flows through the inside of the collector 17 through the duct 18 and the throttle device 19 as shown by arrow B in FIG. 4, and is further drawn into each cylinder of the engine from the manifold 20 as shown by arrow C. At this time, the injection valve 21 is driven according to an injection signal output from the control unit 24, and injects fuel toward each cylinder.

In this case, the control unit 24
Although the temperature is likely to rise due to heat generated from a heat-generating element (not shown) such as a transistor provided inside the heat-generating device or heat transmitted from an engine, these heats are generated by the air cleaner 12.
Plate 23 by the suction air flowing through the outflow chamber 15
The control unit 24 can be stably cooled by the intake air because the heat is efficiently radiated through the control unit 24.

Thus, in the present embodiment, the opening 2 of the air cleaner upper case 11 constituting the air cleaner 12 is formed.
2, a metal plate 23 is provided, and the control unit 24 is detachably mounted on the outer surface side of the metal plate 23. Therefore, the specifications of the intake device are largely changed and the structure is complicated as compared with the prior art. The control unit 24 can be stably mounted on the air cleaner 12 without causing the control unit 24 to be disposed in the engine room, and the control unit 24 can be mounted with various sensors such as a flow rate sensor, a throttle sensor 19C, or an injection valve. 21 and the like.

As a result, the lead wires and the like connecting the control unit 24 with the sensors and actuators can be shortened and simplified, and the number of parts such as mounting brackets for the lead wires can be reduced to reduce the cost. it can.
Then, at the time of assembling the vehicle, the lead wires can be routed and the mounting operation can be performed efficiently.

Further, since the control unit 24 is fixed using the mounting screws 25 and the like screwed into the screw holes 23B of the metal plate 23, when repairing or replacing the control unit 24, for example, the vehicle hood or the like is opened and the mounting screws are opened. The control unit 24 can be removed from the air cleaner 12 only by loosening the control unit 25, and the control unit 24 can be mounted without changing the mounting state of the intake device.
The removal operation can be easily performed, and the maintainability can be improved.

In this case, the metal plate 23 has an inner surface facing the outflow chamber 15 of the air cleaner 12 and an outer surface in contact with the control unit 24 over the front surface. The control unit 24 can be efficiently cooled via the plate 23, and the cooling efficiency of the control unit 24 disposed in the engine room can be more reliably improved than in the related art. Thus, for example, a heat radiating member such as a heat sink provided in the control unit 24 can be downsized or omitted, and the structure can be simplified.

Also, since the cast portion 23A of the metal plate 23 is cast and fixed in the upper air cleaner case 11 by means such as insert molding or the like, these can be easily formed integrally, and the metal plate 23 flows out even at the mounting position of the metal plate 23. The airtightness of the chamber 15 and the like can be stably maintained, and the reliability can be improved.

Further, the intake device is connected to an air cleaner bottom case 2, a collector bottom case 3, and a manifold lower divided body 4.
Molded body 1 comprising an air cleaner opening case 8,
Since the upper molded body 7 composed of the collector upper case 9 and the manifold upper divided body 10 and the air cleaner upper case 11, the air cleaner 12, the collector 17, the manifold 20 and the like can be efficiently integrally formed, and the space in the air cleaner 12 can be reduced. By utilizing this, the manifold 20 can be compactly arranged, and the size of the intake device can be reduced even when the control unit 24 is attached.

Next, FIGS. 7 and 8 show a second embodiment according to the present invention.
In this embodiment, the same components as those in the first embodiment are denoted by the same reference numerals, and the description thereof will be omitted. However, a feature of the engine intake device according to the present embodiment is that the control unit is mounted in the opening facing the outflow chamber of the air cleaner.

Reference numeral 31 denotes an air cleaner having substantially the same structure as the air cleaner 12 according to the first embodiment. The air cleaner upper case 32 of the air cleaner 31 has a substantially square shape which is located on the upper surface side and opens to the outflow chamber 33. An opening 34 having a shape is provided. However, in the present embodiment,
A metal frame 35 described later is provided in the upper air cleaner case 32.

Reference numeral 35 denotes a metal frame as a metal mounting member which is insert-molded in the upper case 32 of the air cleaner. The metal frame 35 is formed in a substantially square shape surrounding the opening 34. Also, the metal frame 35 has a flange-shaped casting portion 35A cast on the outer side of the air cleaner in the upper case 32 and, for example, four screw holes 35B, 35B,.
Are provided.

A control unit 36 has substantially the same configuration as the control unit 24 according to the first embodiment. The control unit 36 includes a unit case 36A, connectors 36B and 36B, and mounting portions 36C and 3.
6C,...

Then, the control unit 36 is configured such that the plurality of mounting screws 37 are connected to the metal frame 3 via the mounting portions 36C.
5 is screwed into the screw hole 35 </ b> B, thereby being detachably mounted in the opening 34 of the upper air cleaner case 32. In this state, the control unit 36
Abuts on the upper surface side of the metal frame 35 via a seal member (not shown) such as a gasket or the like, thereby closing the opening 34 airtightly and projecting the lower side into the outflow chamber 33.

Thus, in the present embodiment configured as described above, substantially the same operation and effect as those of the first embodiment can be obtained. And especially in this embodiment,
Since the control unit 36 is configured to be detachably mounted in the opening 34 provided on the outflow chamber 33 side of the air cleaner 31, in the outflow chamber 33, the control unit 36 is opened by the flow of clean intake air filtered by the filter. The cooling can be performed directly, the cooling efficiency can be further improved, and the control unit 36 can be protected from dust and moisture in the outside air.

In this case, since the metal frame 35 on which the control unit 36 is mounted is provided around the opening 34 in the upper air cleaner case 32, the mounting strength of the control unit 36 can be increased. Further, the control unit 36 can be brought into contact with the upper surface side of the metal frame 35 via a sealing member such as a gasket,
The airtightness between the metal frame 35 and the control unit 36 can be improved.

FIGS. 9 and 10 show a third embodiment according to the present invention. In this embodiment, the same components as those in the first embodiment are designated by the same reference numerals. The description is omitted. However, a feature of the engine intake device according to the present embodiment is that a metal bush with a screw hole is provided around the opening for mounting the control unit.

Reference numeral 41 denotes an air cleaner constructed substantially in the same manner as the air cleaner 12 according to the first embodiment. The air cleaner upper case 42 of the air cleaner 41 has a substantially square shape which is located on the upper surface side and opens to the outflow chamber 43. An opening 44 having a shape is provided. However, the air cleaner upper case 42 according to the present embodiment is provided with a metal bush 45 having a screw hole described later.

45, 45,... Are insert-molded into the upper case 42 of the air cleaner as metal attachment members.
Each metal bush 45
Are arranged around the opening 44.

The control unit is detachably mounted in the opening 44 of the upper air cleaner case 42 using a plurality of mounting screws or the like screwed into the metal bush 45 with screw holes. The portion 44 is hermetically closed, and the lower side protrudes into the outflow chamber 43.

Thus, in the present embodiment configured as described above, substantially the same operation and effect as those of the first and second embodiments can be obtained. In the present embodiment, in particular, since the metal bush 45 with screw holes is provided as a metal mounting member on the upper air cleaner case 42, the weight of the upper air cleaner case 42 can be reduced.

In each of the above embodiments, the air cleaner upper case 1 constituting the air cleaners 12, 31, 41 is described.
The control unit 24,
Although the configuration is such that the openings 22, 34, and 44 for 36 are provided, the present invention is not limited to this. For example, the control units 24, 36 are attached to the openings provided on the side surfaces of the upper cases 11, 32, and 42 of the air cleaner. It may be configured.

In each of the above embodiments, the metal plate 23, the metal frame 35, and the metal bush 45 are provided with screw holes. However, the present invention is not limited to this. By providing a male screw-shaped projection or inserting a bolt member into the upper case of the air cleaner in place of the metal bush 45 with a screw hole, a control unit is provided by using a nut or the like for the projection and the bolt member. May be fastened.

In each of the above embodiments, it has been described that the lower molded body 1 is disposed on the lower side in the drawing and the upper molded body 7 is disposed on the upper side to constitute the intake device of the engine. The intake device formed by integrating the lower molded body 1 and the upper molded body 7 has a relationship with an internal combustion engine.
They may be arranged so as to have an arbitrary positional relationship with respect to the upper and lower directions or the left and right directions, and the arrangement is not limited.

Further, in each of the above embodiments, the case where the intake device of the internal combustion engine is used for a four-cylinder automobile engine has been described as an example. However, the present invention is not limited to this, and the present invention is not limited to this.
It may be applied to engines with three cylinders or five or more cylinders.
Furthermore, internal combustion engines other than those for automobiles, such as agricultural machinery,
The present invention may be applied to an internal combustion engine such as an industrial machine.

[0067]

As described above in detail, according to the first aspect of the present invention, the metal mounting member for mounting the control unit is insert-molded in the opening provided in the air cleaner. It can be stably mounted on the air cleaner near the engine,
The input and output lead wires connected to the control unit and their mounting brackets can be reduced and simplified.
It is possible to efficiently perform the work of attaching the lead wires and the like at the time of assembling the vehicle and the work of attaching and detaching the control unit at the time of maintenance. Further, the control unit can be efficiently cooled by the clean intake air flowing in the outflow chamber of the air cleaner through the opening or the metal mounting member, and the cooling efficiency of the control unit disposed near the internal combustion engine can be improved as compared with the related art. For example, a heat radiation member such as a heat sink provided in the control unit can be simplified.

According to the second aspect of the present invention, the metal mounting member is provided with a cast portion cast into the air cleaner on the outer edge side, so that the metal mounting member and the resin air cleaner can be easily connected. In addition to being integrally formed, the airtightness of the outflow chamber and the like can be stably maintained even at the mounting position of the metal mounting member,
Reliability can be improved.

Further, according to the third aspect of the invention, the metal plate is configured so that the inner surface faces the outflow chamber in the air cleaner and the outer surface faces the outside of the air cleaner. It can be easily attached and detached, and its repair and replacement can be performed efficiently.
Further, the control unit can be efficiently cooled via the metal plate by the intake air flowing in the air cleaner.

According to the fourth aspect of the present invention, since the metal plate is provided with a screw hole for the control unit, the control unit can be easily attached to and detached from the metal plate using mounting screws and the like, and It is possible to efficiently and easily mount and remove the control unit without changing the mounting state of the control unit.

According to the fifth aspect of the present invention, since the metal mounting member is formed by the metal frame, the control unit can be mounted in the opening of the air cleaner, and the mounting strength can be increased by the metal frame. it can. In the outflow chamber of the air cleaner, the control unit can be directly cooled by the clean intake air filtered by the filter. Thereby, the cooling efficiency of the control unit can be further improved, and the control unit can be protected from dust, moisture and the like in the outside air.

Further, according to the sixth aspect of the present invention, since the metal mounting member is constituted by the metal bush with screw holes, the control unit can be mounted in the opening of the air cleaner, and the cooling efficiency thereof can be further improved. The weight of the air cleaner can be reduced.

[Brief description of the drawings]

FIG. 1 is a front view showing an intake device for an engine according to a first embodiment of the present invention.

FIG. 2 is an exploded view of an intake device shown together with a control unit, an injection valve, and the like.

FIG. 3 is a longitudinal sectional view of the intake device as viewed from a direction indicated by arrows III-III in FIG. 1;

FIG. 4 is a longitudinal sectional view of the intake device as viewed from the direction of arrows IV-IV in FIG. 1;

FIG. 5 is an enlarged view of a main part showing an upper case of an air cleaner, a metal plate, and the like in FIG. 2;

6 is an enlarged sectional view of the upper case of the air cleaner as viewed from the direction indicated by arrows VI-VI in FIG. 5;

FIG. 7 is an enlarged view of a main part showing an upper portion of an air cleaner, a metal frame, and the like that constitute an intake device for an engine according to a second embodiment of the present invention.

8 is an enlarged sectional view of the upper case of the air cleaner as viewed from the direction of arrows VIII-VIII in FIG. 7;

FIG. 9 is an enlarged view of a main part showing an upper case of an air cleaner, a metal bush and the like which constitute an intake device for an engine according to a third embodiment of the present invention.

FIG. 10 is an enlarged cross-sectional view of the upper case of the air cleaner as viewed in the direction indicated by arrows XX in FIG. 9;

[Explanation of symbols]

 2 Air cleaner bottom case 8 Air cleaner opening case 11, 32, 42 Air cleaner upper case 12, 31, 41 Air cleaner 13 Filter 14 Inflow chamber 15, 33, 43 Outflow chamber 17 Collector 20 Manifold 22, 34, 44 Opening 23 Metal plate (metal Mounting member) 23A, 35A Casting part 23B, 35B Screw hole 24, 36 Control unit 35 Metal frame (Metal mounting member) 45 Metal bush with screw hole (Metal mounting member)

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Masanori Namiki 1370 Onna, Atsugi-shi, Kanagawa Prefecture Inside Unisex Gex Co., Ltd.

Claims (6)

[Claims] 1. An air cleaner having an interior defined by a filter for filtering intake air into an inflow chamber and an outflow chamber, a collector provided on the outflow chamber side of the air cleaner, through which intake air flows, and an internal An intake system for an internal combustion engine, comprising: a plurality of manifolds extending toward each cylinder of the engine and guiding intake air flowing out of the collector to each cylinder of the internal combustion engine, wherein a control unit is provided on an outflow chamber side of the air cleaner. An air intake device for an internal combustion engine, wherein an opening for mounting the air cleaner is provided, and a metal mounting member for mounting the control unit when resin molding the air cleaner is integrally formed in the opening. 2. The intake device for an internal combustion engine according to claim 1, wherein a casting portion cast into the air cleaner at the time of insert molding is provided on an outer edge side of the metal mounting member. 3. The metal mounting member according to claim 1, wherein the metal mounting member is a flat metal plate closing the opening, and the metal plate has an inner surface facing the outflow chamber and an outer surface facing the outside of the air cleaner. An intake device for an internal combustion engine according to claim 1. 4. The intake device for an internal combustion engine according to claim 3, wherein the metal plate is provided with a screw hole for fixing the control unit. 5. The intake device for an internal combustion engine according to claim 1, wherein the metal mounting member is a metal frame that is arranged to surround the opening and has a plurality of screw holes. 6. The intake device for an internal combustion engine according to claim 1, wherein the metal mounting member is a metal bush with a screw hole provided around the opening.