JP2001227422A - Intake device for engine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an intake device for engine capable of reducing an indoor sound level generated by vibration of an intake system and the engine. SOLUTION: In the intake device for engine for mounting an intake port 5 of an air cleaner 2 for taking air into the engine 1 on a vehicle body front part 2, a vibration isolating member 9 is interposed between the intake port 5 of the air cleaner 2 and the vehicle body front part 12, and the intake port 5 of the air cleaner 2 is fixed.

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 in which an intake port of an air cleaner for taking air into the engine is mounted on a front portion of a vehicle body.

[0002]

2. Description of the Related Art Generally, as shown in FIG.
An air cleaner 101 that takes in air into 00 is provided at an upper position near engine 100. The intake port 102 of the air cleaner 101 is attached to a member 104 at the front of the vehicle body via a duct 103 so that the outside air can be taken in as directly as possible.

FIG. 6 shows a mounting structure of the intake port 102. A belt-like bracket 1 is provided at the front end of the intake port 102.
05 is attached. This bracket 105
Both ends 106 are extended forward, and mounting holes 107 are formed in both ends 106. Bracket 1
A stepped portion 108 is formed at both ends 106 of the 05, and the mounting hole 107 is formed in front of the stepped portion 108. The bracket 105 is fixed to the member 104 by inserting a bolt 109 into the mounting hole 107 and screwing into a nut (not shown) welded to the member 104. Thus, the intake port 102 is connected to the bracket 10.
5 is fixed to the member 104, thereby being fixed to the front part of the vehicle body.

[0004]

However, according to the above-mentioned prior art, the intake port 102 is directly fixed to the member 104 via the bolt 109 inserted through the bracket 10, so that the intake port 102 is caused by pulsation of intake air and combustion of the engine. Vibration input is large. Therefore, a muffled sound and a rumble sound are generated in the room, and there is a case where quietness is deteriorated.

SUMMARY OF THE INVENTION It is an object of the present invention to solve the above-mentioned problems and to provide an intake system for an engine capable of reducing a room sound level generated by vibrations of an intake system and an engine.

[0006]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention provides an air intake system for an engine, in which an air intake port for taking in air into an engine is mounted on a front portion of a vehicle body. And the intake port of the air cleaner is fixed with a vibration isolating member interposed therebetween. The present invention also provides an annular vibration damping member in a mounting hole of a mounting member provided in an air intake port of the air cleaner, and a fastener inserted into the vibration damping member so that an air intake port of the air cleaner is located at a front portion of a vehicle body. It was screwed. Further, the present invention uses an anti-vibration rubber having flange portions at both ends as the above-mentioned anti-vibration member, assembles the anti-vibration rubber into a mounting hole of a mounting member, and tightens the anti-vibration rubber by fastening a fastener. Have been pinched.

[0007]

Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 shows an intake device for an engine of the present invention disposed in an engine room. In FIG. 1, an air cleaner 2 for taking air into the engine 1 is provided on the upper side near the engine 1 provided in the engine room. The air cleaner 2 is fixed to a head cover 1a of the engine 1 via bolts 3 with washers on brackets 2a and 2b. One end of an intake hose 4 is connected to the air cleaner 2, and an intake port 5 is connected to the other end of the intake hose 4. The intake port 5 is provided with an opening 7 on the front surface of the housing section 6, and a bracket 8 as a mounting member is mounted on the inner lower surface of the opening 7.

[0008] As shown in FIG.
The intermediate portion 8a is fixed to the housing portion 6 by screwing, welding, or the like, and both end portions 8b are projected outside the opening portion 7. At both ends 8b of the bracket 8, a stepped portion 8c which is slightly lowered in the downward direction is provided, and a mounting hole 8d is formed at a tip end thereof.
As shown in FIG. 3, an annular vibration isolating rubber 9 having flange portions 9a formed at both ends is mounted in the mounting hole 8d as a vibration isolating member.

As shown in FIG. 4, the vibration isolating rubber 9 is arranged such that the cylindrical portion 9b between the flange portions 9a is disposed in the mounting hole 8d, and the flange portions 9a sandwich both surfaces of the bracket 8. . A cylindrical spacer 10 is press-fitted inside the vibration-proof rubber 9. A bolt 11 with a washer as a fastener is inserted through the spacer 10 and screwed into a mounting hole 12a of a member 12 of the front vehicle body. Member 1
A nut 13 is welded to the back side of 2 in advance, and a bolt 11 with a washer is screwed to the nut 13 to fix the bracket 8. The member 12 is a hood lock member that constitutes a front end panel, and is disposed in the vehicle width direction at the front of the vehicle body. An opening 7 of the intake port 5 is opened at an upper side of the member 12 toward the front of the vehicle body, and inhales air flowing into the engine room from the front of the vehicle body.

Reference numeral 14 denotes a resonator. The resonator 14 is fixed to the head cover 1a of the engine 1 and the bracket 18 of the cooling water hose 17 via bolts 16 with washers on brackets 15a and 15b.
Brackets 2a and 2b for fixing air cleaner 2 and brackets 15a and 15 for fixing resonator 14
In a mounting hole (not shown) of b, a vibration isolating rubber 19 into which a spacer (not shown) similar to the vibration isolating rubber 9 is press-fitted is mounted.

According to the above construction, the air cleaner 2 for sucking air into the engine 1 is provided with bolts 3 with washers on the head cover 1a of the engine 1 with the vibration isolating rubber 19 interposed in the mounting holes of the brackets 2a and 2b for fixing the air cleaner 2. Fixed at. And the air inlet 5 of the air cleaner 2
The vibration-proof rubber 9 into which the spacer 10 is press-fitted is interposed in the mounting hole 8 d of the bracket 8. Then, the bolt with washer 11 is inserted into the hole of the spacer 10 and screwed into the mounting hole 12a of the member 12 of the front vehicle body. Bracket 8
Since the flange portion 9a of the anti-vibration rubber 9 is interposed between the member and the member 12 of the front vehicle body, the intake port 5 of the air cleaner 2 can be floated from the vehicle body. The indoor sound level generated due to the cause can be reduced.

The bracket 8 has a stepped portion 8c of an attachment portion to the member 12 of the front vehicle body as compared with a conventional bracket.
Is reduced, it is possible to prevent the position of the intake port 5 from being excessively raised by the flange portion 9a of the vibration isolating rubber 9. Since the spacer 10 is interposed inside the anti-vibration rubber 9, it is possible to prevent the effect of the anti-vibration rubber 9 from being reduced due to excessive tightening of the bolt 11 with a washer. Further, since the bolts 11 with washers are used, the bolt tightening torque is evenly applied to the vibration isolating rubber 9 at the time of mounting.

The present invention is not limited to the above embodiment. For example, a synthetic resin or the like may be used as the vibration isolating member in addition to the vibration isolating rubber 9. Also,
Although the vibration-proof rubber 9 used the thing which integrally formed the flange part 9a, it does not necessarily need to be one. In this case, the fastening may be performed such that the annular members serving as the flange portions are arranged on both sides of the bracket 8.

As the bracket 8, a member separate from the housing portion 6 is assembled inside the opening portion 7 of the housing portion 6, and the housing portion 6 is integrally formed with both end portions 8b having mounting holes 8d. May be. As the fastener, a screw or the like can be used in addition to the bolt 11 with the washer. In addition, it goes without saying that the present invention can be appropriately modified and implemented without departing from the scope of the present invention.

[0015]

As described above, the following effects can be obtained by the engine intake device according to the present invention. 2. The intake system for an engine according to claim 1, wherein an intake port of an air cleaner for taking air into the engine is mounted on a front portion of the vehicle body, wherein a vibration damping member is interposed between the intake port of the air cleaner and the front portion of the vehicle body. Since the intake port is fixed, the intake port of the air cleaner can be floated from the vehicle body, so that the indoor sound level generated due to the vibration of the intake system and the engine can be reduced. 3. The air cleaner according to claim 2, wherein an annular vibration isolating member is assembled into a mounting hole of a mounting member provided at an air intake port of the air cleaner, and a fastener is inserted through the vibration isolating member so that the air intake port of the air cleaner is screwed into a front portion of the vehicle body. As a result, the room sound level generated due to the vibration of the intake system or the engine can be reduced. 4. The vibration isolating member according to claim 3, wherein the vibration isolating rubber has flange portions at both ends, and the vibration isolating rubber is assembled into a mounting hole of a mounting member, and the vibration isolating rubber is tightened by tightening a fastener. , The indoor sound level generated due to the vibration of the intake system or the engine can be reduced.

[Brief description of the drawings]

FIG. 1 is a conceptual diagram showing an embodiment of an engine intake device according to the present invention.

FIG. 2 is an enlarged perspective view showing an intake port of FIG. 1;

FIG. 3 is a perspective view showing a fastening portion between an intake port of FIG. 2 and a vehicle body.

FIG. 4 is a sectional view taken along line AA of FIG. 3;

FIG. 5 is a plan view showing a conventional engine intake device.

FIG. 6 is an enlarged perspective view showing a conventional intake port.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Engine 2 Air cleaner 3 Bolt with washer 4 Intake hose 5 Intake port 6 Housing part 7 Opening 8 Bracket (mounting member) 9 Anti-vibration rubber (anti-vibration member) 10 Spacer 11 Bolt with washer 12 Member (front of vehicle body) 13 Nut

Claims (3)

[Claims] 1. An intake system for an engine, wherein an intake port of an air cleaner for taking air into the engine is mounted on a front portion of the vehicle body, wherein a vibration isolating member is interposed between the intake port of the air cleaner and the front portion of the vehicle body. An intake device for an engine, having a fixed intake port. 2. An annular vibration damping member is assembled into a mounting hole of a mounting member provided at an air intake port of the air cleaner, and a fastener is inserted through the vibration damping member so that the air suction port of the air cleaner is screwed into a front portion of the vehicle body. The intake device for an engine according to claim 1, wherein the engine is worn. 3. An anti-vibration rubber having flange portions at both ends is used as the anti-vibration member, the anti-vibration rubber is assembled into a mounting hole of a mounting member, and the anti-vibration rubber is tightened with a fastener to provide elasticity. The intake device for an engine according to claim 1, wherein the intake device is held between the engine and the engine.