JP2932401B2 - Arrangement structure of intake system for automotive engine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an arrangement structure of an intake system of an automobile engine, and more particularly to an arrangement structure of an air cleaner provided in an intake system and an air duct connected thereto.

[0002]

2. Description of the Related Art Conventionally, according to Japanese Utility Model Laid-Open Publication No. 61-147624, an air cleaner case is mounted on a wheel apron which is bent inward of a wheel house which is a vehicle body component on the side of an engine room, and is connected to an air cleaner through the wheel apron. It is known that an air intake duct on the upstream side is curved in a space inside a fender outside a wheel house.

[0003]

It is desired to increase the length of the duct in order to suppress the emission of intake noise from the air intake duct. However, as described above, the air intake duct is housed in a limited space in the fender. Therefore, even if the duct is curved, the length of the duct cannot be made as long as it is left due to the restriction of the curvature, and in the above case, the air cleaner is attached to the plate-shaped wheel apron, so the supporting rigidity of the air cleaner is low. There was a shortage of wins.

SUMMARY OF THE INVENTION In view of the foregoing, it is an object of the present invention to increase the support rigidity of an air cleaner, and furthermore, to make it possible to arrange an air duct so as to extend its entire length and space-efficiently.

[0005]

In order to achieve the above object,
According to the present invention, an air cleaner is fixed at least in part to a vehicle body reinforcing member having a closed cross section provided in an engine room, and an air duct is provided around the vehicle body reinforcing member on one side, below, and other portions of the vehicle body reinforcing member. Side and top
And arranged around it.

[0006]

The air cleaner can be supported with high rigidity by a vehicle body reinforcing member having a closed cross section. Also, the space above the vehicle body reinforcing member
The air duct can be lengthened a duct by Meguraseru also, Thus even by utilizing the entire space around the reinforcing member to the space for the arrangement space and an air duct of the air cleaner, the air cleaner and the air duct in the engine room Space efficient placement possible.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Referring to FIG. 1, reference numeral 1 denotes a wheel house provided on a side of an engine room of a vehicle body, 2 denotes a fender provided outside a wheel house 1, and a wheel apron which is bent inward in the wheel house 1. 1a to form
A portion of the apron 1a that hangs downward from the inner edge is constituted by a side frame 3 having a closed cross-sectional shape as a vehicle body reinforcing member, and a damper housing 1b formed in the wheel house 1.
The air cleaner 4 is arranged in front of the wheel apron 1a and the side frame 3 and the air intake duct 5 connected to the air cleaner 4 is arranged in front of the air cleaner 4 around the side frame 3. .

The air cleaner 4 is constructed by mounting a cleaner element (not shown) in a case composed of a lower case 6 and a detachable upper case 7, as shown in FIGS. 2 to 4. The lower case 6 is fixed on the side frame 3 at the lower mounting portion 8 at the lower front surface, and the lower mounting portion 9 is fixed at the lower outer surface of the lower case 6.
And the mounting portion 10 at the upper rear surface, respectively, fixed to the wheel house 1 and the damper housing 1b.

The air intake duct 5 includes a lower case 6
Downstream end 5a connected through a wheel apron 1a to a downwardly-opening inlet 6a formed in the front part of the vehicle
And an upstream end portion 5b disposed laterally in a space above the side frame 3, and the duct 5 is connected to the both end portions 5a,
5b, outside the vehicle width direction around the side frame 3.
One side, lower side, the other side and upper side in the vehicle width direction
And the upstream end portion 5b is fixed to the front surface of the lower case 6 at the attachment portion 11 on the back surface thereof, and the duct 5 is attached to the attachment portion 12 of the duct middle portion located in the space below the side frame 3. At the side frame 3
Is fixed to the back of the towing bracket 3a fixed to the front end of the traction bracket.

By fixing the upstream end 5b of the air intake duct 5 to the lower case 6 as described above, the upstream end 5b
b can be prevented, and when the upper case 7 is removed to replace the cleaner element, the air intake duct 5 does not need to be touched, thereby improving the maintainability.

A sub-muffling chamber 13 is mounted upstream of the air intake duct 5 and further includes a fender 2.
The main silencing chamber 14 was arranged in the space inside, and the duct 5 was inserted in communication with the chamber 14 in a communication cylinder 5c attached to the downstream portion thereof. In this case, by circulating the air intake duct 5 around the side frame 3, the proportion of the space of the duct 5 occupying the space in the fender 2 is reduced, and the volume of the silencing chamber 14 arranged in the space in the fender 2 is correspondingly reduced. Can be increased.
The silencing chamber 14 is fixed to the traction bracket 3a at the lower mounting portion 15 and to the wheel house 1 at the upper mounting portion 16, respectively. Each of the mounting portions 8 to 1
Elastic members are attached to 1, 15, and 16 in consideration of vibration isolation. In the drawing, reference numeral 17 denotes a drain hole formed in the lower surface of the intermediate portion of the air intake duct 5.

In the above embodiment, the air cleaner 4 is mounted on the side frame 3 as a vehicle body reinforcing member, and the air intake duct 5 is disposed around the side frame 3. However, the air cleaner is mounted on the vehicle body reinforcing member in the engine room other than the side frame 3. The present invention can be similarly applied to the case of mounting.

[0013]

As is apparent from the above description, according to the present invention, the rigidity of support of the air cleaner can be increased, and the entire space around the vehicle body reinforcing member to which the air cleaner is to be mounted.
Using between, has the effect of an air duct having a required length can space efficiently arranged.

[Brief description of the drawings]

FIG. 1 is a perspective view of one embodiment of the present invention.

FIG. 2 is a plan view of a main part thereof.

FIG. 3 is a side view as viewed from the direction of arrow III in FIG. 2;

FIG. 4 is a front view seen from the direction of arrow IV in FIG. 2;

[Explanation of symbols]

3 Side frame (body reinforcement member), 4 Air cleaner 5 Air intake duct

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁶ , DB name) F02M 35/16 B60K 13/02

Claims (1)

(57) [Claims] 1. An arrangement structure of an intake system of an automobile engine including an air cleaner and an air duct connected to the air cleaner, wherein the air cleaner is fixed to at least a part of a vehicle body reinforcing member having a closed cross section provided in an engine room. And at the same time, place the air duct around the vehicle body reinforcing member on one side, below, on the other side and above the vehicle body reinforcing member.
Arrangement of the intake system of an automobile engine, characterized in that over and speculating which was disposed.