JP2002205560A - Intake device for engine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an intake device for an engine having little intake noise within a cabin taken with a snow resistant entering countermeasure. SOLUTION: The side of the device is curved so as to connect a rear part of a suction case 4 installed in vehicle front and rear directions within a fender 2 with an air cleaner 1 provided in an engine room. A baffle plate 9 of a mesh structure is provided adjacently to an intake inflow port 6 in the front part of the suction case 4. The rear part of the suction case 4 is connected with a resonator 5. Intake resistance is reduced and an engine output is not affected, even if the baffle plate 9 is arranged at the intake inflow port 6, because the length of the suction case 4 is shorter than that of a conventional suction case and the baffle plate 9 has the mesh structure. Intake noise is reduced because the intake inflow port 6 is away from the cabin. By the baffle plate 9, foreign matter such as dust and snow is prevented from entering.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an intake device for an engine having a flow passage formed upstream of an air cleaner so as to prevent foreign matter from entering through an intake air inlet.

[0002]

2. Description of the Related Art Conventionally, an air cleaner is attached to an intake system of an engine to purify and use intake air. Since the intake noise from the engine is emitted by the air cleaner alone and causes noise, the pulsation is suppressed by providing a resonator or the like, and noise measures are taken.

[0003] Usually, an air cleaner is installed in an engine room. As shown in FIG. 4, the upstream side of the air cleaner 1 is housed in the fender 2, and is connected to the cylindrical suction case 4 in the fender 2 via the connection pipe 3. The suction case 4 extends in the front-rear direction of the vehicle, and a connection pipe 3 is connected to a side surface thereof. A resonator 5 is connected to a front side of the suction case 4 in the vehicle, and a rear side of the vehicle is extended in a vehicle room direction. It is formed toward the forward direction of the vehicle. In this configuration, since the intake port 6 is disposed rearward in the fender 2, the intake port and foreign matter such as dust and rainwater entering from the front of the vehicle have a distance that does not reach the intake port 6 directly. , Preventing intrusion of foreign matter.
Even in the snowfall area, even when snow falls into the fender 2, the intake port 6 is located behind the fender 2 so that the entry of snow can be prevented.

[0004] In addition, when rainwater is contained in the air introduced into the intake passage of the engine, the intrusion of moisture is prevented by a baffle plate suspended in a water / water separation box arranged in the intake passage. (Japanese Patent Laid-Open No. 10-31)
No. 8058). Also, in front of the air cleaner body,
A pre-cleaner having a structure in which an internal intake passage is folded back into a U-shape is provided, and a discharge port is provided to discharge dust when the U-shaped passage bends. There is one that forms a part to prevent intrusion of rainwater or the like (Japanese Patent Application Laid-Open No. 61-72862).

[0005]

By the way, the intake air inlet 6 of the suction case 4 arranged in the fender 2.
As shown in FIG. 4, since the vehicle is arranged away from the front side of the vehicle, the vehicle approaches the cabin side, and there is a concern that the transmitted sound of intake air in the cabin may increase. Further, since the position of the air cleaner 1 in the engine room is determined, the distance between the suction port of the air cleaner 1 and the intake air inlet 6 of the suction case 4 disposed at the rear inside the fender 2 becomes longer, so that the intake air Resistance increases. Further, the suction case 4 is usually arranged in the fender 2, and when the pipe length is long, the unit cost of the suction case 4 increases, and when the mounting portion 7 of the suction case 4 or the like is reduced, the rigidity is reduced, and the mounting portion 7 is reduced. If the number is too large, the positioning may not be easy and the difficulty in assembling may increase. However, even if the intake port 6 of the suction case 4 is arranged at the front part in the fender 2, there is a problem that dust, rainwater, snow, and the like easily enter the intake port 6 directly.

SUMMARY OF THE INVENTION It is an object of the present invention to provide an intake device for an engine having an intake air inlet for reducing the sound transmitted through the intake air into the vehicle interior, reducing the resistance of the intake air, and preventing entry of foreign matter. I do.

[0007]

In order to achieve the above object, according to the present invention, there is provided an air cleaner, one end of which is connected to a dust side of the air cleaner, the other end of which is opened, and intake air flows in. A possible suction member and a baffle plate having a mesh structure disposed facing the other end of the suction member are provided.

According to a second aspect of the present invention, in the first aspect of the present invention, the other end opening of the suction member is disposed toward the front of the vehicle.

According to a third aspect of the present invention, the air cleaner is connected at one end to a dust side of the air cleaner, the other end at the front of the vehicle is opened to allow intake air to flow in, and the other end at the rear of the vehicle is connected to the resonator. And a baffle plate having a mesh structure disposed facing the other end of the suction member on the vehicle front side.

[0010]

Embodiments of the present invention will be described below with reference to the accompanying drawings. As shown in FIG. 1, an air cleaner 1 is installed in an engine room, and a fender 2
A cylindrical suction case (suction member) 4 is disposed inside. The air cleaner 1 and the suction case 4 are connected by a connection pipe 3.

The suction case 4 is formed in a cylindrical shape, and is opened at the front side of the vehicle (intake air inlet 6). The rear part is bent toward the engine room and can be connected to the connection pipe 3.
A mounting portion 7 for attaching to the fender 2 is provided on a side surface of the suction case 4, and a mounting bracket 10 for the baffle plate 9 is fixed thereto. A resonator 5 having a mounting portion 7 is provided at a rear bent portion of the suction case 4. The suction case 4 and the resonator 5
The mounting portion 7 is floating fixed to the vehicle body via an elastic member (not shown).

As shown in FIGS. 1 and 2, the baffle plate 9 has a substantially vertical back portion 11, a substantially horizontal knee portion 12, and a substantially vertical foot portion 13 formed continuously therethrough. It is brought into contact with the bracket 10 of the case 4 and is fixed by bolts 14.

As shown in FIGS. 2 and 3, between the back 11, the knee 12, and the foot 13 of the baffle 9, a sled 15 and an edge 16 are formed on both sides thereof. 9 is maintained. The back portion 11 of the baffle plate 9 has a lattice-like double structure, a hinge 17 is provided on the upper portion of the back portion 11, and the back back plate 11a is configured to be rotatable rearward. The mesh plate 18 is mounted between the back plate 11a and the back plate 11a. Locking portion 1 at the time of mounting on back back plate 11a
9 is formed, and an engaging hole 20 for an engaging portion 19 is formed in the back surface plate 11b. The engaging portion 19 is inserted into the engaging hole 20 and fixed.

In the intake device for an engine configured as described above, by shortening the suction case 4 and providing the intake port 6 in the vehicle traveling direction, it becomes possible to reduce the resistance of the intake air. By providing the mesh-type baffle 9 near the inflow port 6, dust and rainwater can be prevented from entering, and the ability to penetrate snow can be improved. In addition, even in the case of the suction case 4 set in an area where it is not necessary to take measures against snow intrusion, the provision of the baffle plate 9 can prevent snow from directly entering the intake inlet 6. Further, when replacing the mesh plate 18 of the baffle plate 9, the back back plate 11a of the baffle plate 9 can be freed from the locked state and rotated to take out the sandwiched mesh plate 18.

The suction inlet 6 of the suction case 4
Can be arranged in front of the vehicle, so that the intake air inlet 6 moves away from the passenger compartment side, and the indoor transmitted sound of the intake air noise can be reduced. Further, since the shape of the suction case 4 can be made simpler than that of a conventional product, cost reduction and improvement in assemblability can be achieved.

Furthermore, since the intake inlet 6 is laid out on the front side of the vehicle and the resonator 5 is laid out on the rear side of the vehicle, the height of the entire suction case 4 is lower than in the case where both are arranged on one side. Since it can be set, the degree of freedom of the shape of the hood and the fender 2 can be increased, the appearance can be improved, and the product power can be improved.

In this embodiment, the suction case 4 is more compact than the conventional suction case, so that the cost can be reduced and the assembling property can be improved. Further, the baffle plate 9 can be commonly used for any suction case 4 and can be applied to each part of the air suction port. Further, in this embodiment, the example in which the suction case 4 and the resonator 5 are provided in the fender 2 has been described. However, both (the suction case 4 and the resonator 5) are provided in the engine room, Only the type provided in the fender 2 can be implemented.

[0018]

The present invention is as described above. According to the first aspect of the present invention, since the baffle disposed immediately before the intake air inlet has a mesh structure, there is almost no intake resistance, and the engine output is low. Has no effect on
Therefore, since the baffle plate can be set immediately adjacent to the intake air flow inlet, it is possible to prevent snow from entering together with dust and rainwater, and the ability of the vehicle can be exhibited regardless of the weather. As a result, the product power is also improved. According to the second aspect of the present invention, it is possible to prevent snow from entering from the intake air inlet by the baffle plate. Therefore, the intake air inlet can be arranged in the traveling direction as far as possible from the vehicle interior to the front of the vehicle. Therefore, the intake noise in the vehicle interior can be reduced. In addition, this leads to an increase in product appeal.

According to the third aspect of the present invention, since the intake air inlet and the resonator are disposed separately, the height of the entire suction member is set lower than in the case where both of them are disposed offset to one side. Therefore, the degree of freedom of the shape of the hood and the fender can be increased. This leads to an increase in product appeal.

[Brief description of the drawings]

FIG. 1 is a schematic view of an air cleaner according to an embodiment of the present invention and an intake system at an upstream side thereof.

FIG. 2 is a schematic diagram of the vicinity of an intake air inlet of FIG.

FIG. 3 is a side view of the baffle plate shown in FIG.

FIG. 4 is a schematic view of a conventional air cleaner and an intake system at an upstream side thereof.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Air cleaner 2 Fender 4 Suction member 5 Resonator 9 Baffle plate 18 Mesh plate

Claims (3)

[Claims] 1. An air cleaner, comprising: a suction member having one end connected to the dust side of the air cleaner, the other end being open and allowing the intake air to flow in, and a mesh structure arranged facing the other end of the suction member; An intake device for an engine, comprising a baffle plate. 2. The intake device for an engine according to claim 1, wherein the other end opening of the intake member is disposed toward the front of the vehicle. 3. An air cleaner, and an intake member having one end connected to the dust side of the air cleaner, the other end on the front side of the vehicle being opened to allow intake air to flow in, and the other end on the rear side of the vehicle being connected to a resonator. And a baffle plate having a mesh structure disposed to face the other end of the intake member on the vehicle front side.