JP2002070666A - Vehicular air cleaner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce intake noises by increasing the capacity of a clean side air chamber, and to utilize the air in an auxiliary air chamber when response is improved by rapid opening for challenging the response of an engine, that is, a large quantity of air is needed in a short period. SOLUTION: An air cleaner element 52 is mounted to a ceiling 59 of a dirty side air chamber 61, the clean side air chamber 62 is arranged above and behind the dirty side air chamber 61, the auxiliary air chamber 63 is disposed under the dirty side air chamber 61, and the auxiliary air chamber 63 is allowed to communicate with the clean side air chamber 62.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to an improvement of a vehicle air cleaner.

[0002]

2. Description of the Related Art As an air cleaner for a vehicle, for example, Japanese Unexamined Utility Model Publication No. Sho 56-111263 "Motorcycle Air Cleaner" is known. According to the above technology, according to FIGS. 1 and 2 of the publication, a cleaner element 4 is housed in a cleaner box 2, a dirty side air chamber before purifying air with the cleaner element 4, and a cleaner side after purifying air. An air cleaner divided into a clean side air chamber, wherein an interference chamber 10 for reducing intake noise is formed to protrude toward the seat 9 below the clean side air chamber, and an outlet 6 for connecting a carburetor 8 is provided with a fuel tank. It is formed toward one side.

[0003]

However, in the above air cleaner, the interference chamber 10 for reducing the intake noise is formed below the clean side air chamber so as to protrude toward the seat 9 side. This may hinder the structural components and may impose restrictions on the freedom of layout around the carburetor 8. For example, when the air cleaner is disposed immediately above the engine, the air cleaner element and the like may be affected by the engine.

An object of the present invention is to provide an air cleaner for a vehicle which does not impose any restrictions on the layout around the carburetor and can reduce the thermal effect even when it is arranged directly above the engine. is there.

[0005]

According to a first aspect of the present invention, there is provided an air cleaner for a vehicle in which an air cleaner element is housed in a case and divided into a dirty side air chamber and a clean side air chamber by the air cleaner element. Attach an air cleaner element to the ceiling of the dirty side air chamber, place a clean side air chamber above and behind the dirty side air chamber, and place an auxiliary air chamber below the dirty side air chamber,
The auxiliary air chamber is communicated with a clean side air chamber.

In order to increase the capacity of the clean side air chamber, an auxiliary air chamber is arranged below the dirty side air chamber, and this auxiliary air chamber is communicated with the clean side air chamber. By connecting the auxiliary air chamber to the clean side air chamber, a substantial capacity of the clean side air chamber can be obtained. By increasing the capacity of the clean side air chamber,
Intake noise can be reduced. In addition, when the quick opening response that makes the engine response a problem is improved, that is, when a large amount of air is required in a short time, the air in the auxiliary air chamber can be used. Furthermore, by forming the auxiliary air chamber below the dirty side air chamber, for example, a large protrusion is not formed, so that the degree of freedom in layout around the vaporizer can be increased.

A second aspect of the present invention is characterized in that the air cleaner is disposed immediately above the engine. Even when the air cleaner is disposed immediately above the engine, the auxiliary air chamber can function as an effective heat insulating layer, so that the air cleaner element, which is the weakest among the components of the air cleaner, can be protected.

[0008]

Embodiments of the present invention will be described below with reference to the accompanying drawings. Note that "before", "after",
“Left”, “right”, “up”, and “down” follow the direction viewed from the driver, and Fr indicates the front side, Rr indicates the rear side, L indicates the left side, and R indicates the right side. Also, the drawings should be viewed in the direction of reference numerals.

FIG. 1 is a side view of a motorcycle equipped with a vehicle air cleaner according to the present invention.
A front fork 13 attached to a head pipe 12 of the body frame 11; a front wheel 14 attached to the front fork 13; a handle 15 connected to the front fork 13;
A fuel tank 16 mounted so as to straddle an upper front portion of the vehicle body, a seat 18 mounted on an upper rear portion of the vehicle body frame 11, and a power unit 1 mounted on a lower front portion of the vehicle body frame 11.
9 (combination structure of a front engine 21 and a rear transmission 22), a swing arm 23 attached to a lower rear portion of the body frame 11, a rear suspension 24 that suspends the middle of the swing arm 23 from the body frame 11, A rear wheel 25 is attached to the rear end of the swing arm 23.
Reference numerals 26 and 26 (the back 26 is not shown) are main pipes of the body frame 11.

The motorcycle 10 includes a front cowl 27 covering an upper front portion of the body frame 11, a windscreen 28 mounted on the upper portion of the front cowl 27, and a side cowl 2 covering a side portion of the body frame 11.
9, a front cowl 31 that covers the lower part of the seat 18 at the rear part of the body frame 11, a front fender 32 that covers the upper part of the front wheel 14, and a rear fender 33 that covers an upper part of the rear part of the rear wheel 25. It is a motorcycle.

Here, 34L and 34R are left and right intake ducts, 35 is a cowling stay, 36 is a carburetor, 37 is an exhaust pipe, 38 is a collecting pipe, 39 is a muffler, 41 is a headlamp, 42 is a mirror, 43 is a radiator, 44 and 44 are seat rails, 47 is a drive chain, 48 is a main stand, and 50 is a vehicle air cleaner (to be described later).
"Abbreviated as" air cleaner 50 ").

FIG. 2 is a side view showing the arrangement of parts around the vehicle air cleaner according to the present invention. The intake system of the motorcycle 10 uses left and right intake ducts 34 by using traveling wind.
L, 34R (not shown on the rear side 34R), supplies the air to the air cleaner 50, purifies the air with the air cleaner 50, and removes the clean air into the vaporizer 3.
6 is supplied.

FIG. 3 is a perspective view showing the arrangement of parts around the vehicle air cleaner according to the present invention.
4L is a front cowl 27 (FIG. 2) for sucking air.
Front duct 34a protruding from the opening 27a of the
An intermediate duct 34b through which air is circulated by connecting to the front duct 34a, and a rear duct 34 which supplies air to the air cleaner 50 by connecting to the intermediate duct 34b.
c from the front cowl 27 to the front duct 34a.
And the duct body 34b is attached to the cowling stay 35.
(See FIG. 2), and the rear duct 34c is connected to the air cleaner 50. The right intake duct 34
R is a duct symmetrical to the intake duct 34L in plan view, and a detailed description thereof will be omitted. The vaporizer 36 is a component for vaporizing gasoline (not shown) in the float chamber 36a in a spray form and supplying the vaporized gas to the engine.

FIG. 4 is an exploded perspective view of a vehicle air cleaner according to the present invention. The air cleaner 50 includes a cleaner case 51 as a case and an air cleaner element 52 housed in the cleaner case 51. The cleaner case 51 includes a case body 53 and the case body 5.
An upper case 54 covers the case 3 from above and a lower case 55 covers the case body 53 from below. 56 ... (...
Indicates a plurality, and only one is shown in FIG. The same shall apply hereinafter) is a set screw for fixing the upper case to the case body 53, 57 ...
Is a set screw for fixing the lower case 55 to the case body 53. The air cleaner element 52 includes an element body 52a and a frame 5 supporting the element body 52a.
2b.

The case body 53 includes a first recess 53a forming a dirty side air chamber 61, a second recess 53b forming a part of the clean side air chamber 62, and first and second recesses 53a, 53b. And the first recessed portion 53a is provided with the intake ducts 34L and 34R.
(See FIG. 3) are formed, and the second concave portion 53b is a through hole of a cylindrical member 58 for supplying air to the carburetor 36 (see FIG. 3). 53e ... (... denotes a plurality, the same applies hereinafter)
A communication hole 53f that communicates with the lower case 55 is formed.

53g are mounting holes for mounting the upper case 54, and 53h are mounting bosses for mounting the lower case 55. Reference numeral 59 denotes a portion on which the cleaner element 52 is placed.
1 shows a ceiling.

The upper case 54 includes a clean side air chamber 6.
2 are formed, and upper case recesses 54a forming a part of the second set 2 are formed, and through holes 54b passing through the set screws 56 are formed. The lower case 55 has a lower case recess 55a that forms the auxiliary air chamber 63 and a through hole 55b for the set screw 57.

FIG. 5 is a side sectional view of an air cleaner for a vehicle according to the present invention. An air cleaner element 52 is mounted on a ceiling 59, and an upper case 54 is mounted on a case body 53. The lower case 55 is attached to the lower surface of the case main body 53 to form the auxiliary air chamber 63. Also, the clean side air chamber 62
And the auxiliary air chamber 63 are communicated through the communication hole 53f.

The air cleaner 50 includes a cleaner case 51.
The air cleaner element 52 is mounted on the ceiling 59 of the dirty side air chamber 61, and the air cleaner element 52 is attached to the dirty side air chamber 61 and the clean side air chamber 61 by the air cleaner element 52. A clean side air chamber 62 is disposed above and behind the air chamber 61, and an auxiliary air chamber 63 is disposed below the dirty side air chamber 61. The auxiliary air chamber 63 communicates with the clean side air chamber 62. It can be said that there is.

That is, in order to increase the capacity of the clean side air chamber 62, an auxiliary air chamber 63 is formed below the dirty side air chamber 61, and this auxiliary air chamber 63 communicates with the clean side air chamber 62. By making the auxiliary air chamber 63 communicate with the clean side air chamber 62, a substantial capacity of the clean side air chamber 62 can be obtained. Increasing the capacity of the clean side air chamber 62 can reduce intake noise. The air in the auxiliary air chamber 63 can be used when the response is improved by a sudden opening that makes the engine response a problem, that is, when a large amount of air is required in a short time. Further, since the auxiliary air chamber 63 is formed below the dirty side air chamber 61, for example, a large protrusion is not formed, so that the degree of freedom of layout around the vaporizer 36 (see FIG. 3) can be increased. Can be planned.

The operation of the above-described vehicle air cleaner 50 will now be described. 6 (a) and 6 (b) are explanatory views of the operation of the vehicle air cleaner according to the present invention. FIG. 6 (a) shows the vehicle air cleaner 100 of the comparative example, and FIG. 6 (b) shows the vehicle air cleaner 50 of the embodiment. Show. 1A, an air cleaner 100 has an air cleaner element 103 attached to a ceiling 102 of a dirty side air chamber 101, and a clean side air chamber 104 disposed above and behind the dirty side air chamber 101.
When the air cleaner 100 is disposed immediately above the air cleaner 5, the air cleaner 100 is greatly affected by heat.

In (b), the air cleaner 50 has an air cleaner element 52 mounted on a ceiling 59 of a dirty side air chamber 61, and a clean side air chamber 62 disposed above and behind the dirty side air chamber 61 and a dirty side air chamber 62. An auxiliary air chamber 63 is disposed below the chamber 61, and this auxiliary air chamber 63 is
It is connected to 2. Therefore, even when the air cleaner 50 is disposed directly above the engine 21, the auxiliary air chamber 6
3 can function as an effective heat-insulating layer, so that the air cleaner element 52 that is the weakest among the components of the air cleaner 50 can be protected.

FIG. 7 is a side sectional view of a vehicle air cleaner according to another embodiment of the present invention.
(Hereinafter, it is abbreviated as “air cleaner 70”). The same parts as those of the air cleaner 50 (see FIG. 5) are denoted by the same reference numerals, and detailed description is omitted. In the figure, 52
Numeral denotes an air cleaner element, 53 denotes a case body, 55 denotes a lower case, 56 ..., 57 ... set screws, 61 denotes a dirty side air chamber, and 63 denotes an auxiliary air chamber. The air cleaner 70 is provided with an upper partition wall 74a in the upper case 74, an opening 74b in the upper partition wall 74a, and an inner duct 75 attached to the opening 74b, thereby changing the clean side air chamber 72 into the first clean side air chamber 72A. And a second clean side air chamber 72B.

That is, the air cleaner 70 divides the clean side air chamber 72 into a first clean side air chamber 72A and a second clean side air chamber 72B, and a space between the first and second clean side air chambers 72A, 72B. The connection by the inner duct 75 can reduce intake noise.

FIG. 8 is a front sectional view of a vehicle air cleaner according to still another embodiment of the present invention, and shows a side sectional view of a vehicle air cleaner 80 (hereinafter abbreviated as "air cleaner 80"). The air cleaner 50 (see FIG. 5)
The same components as those of the air cleaner 70 (see FIG. 7) are denoted by the same reference numerals, and detailed description thereof will be omitted. In the drawing, 52 is an air cleaner element, 56 is a set screw, 61 is a dirty side air chamber, 74 is an upper case, 74a is an upper partition wall, 7
4b is an opening 74b, 75 is an inner duct, and 83 is a case main body. The air cleaner 80 divides the clean side air chamber 82 into a first clean side air chamber 82A and a second clean side air chamber 82B.
By connecting the clean side air chambers 82A and 82B with the inner duct 75, it is intended to reduce intake noise.

In the embodiment, as shown in FIG. 2, the vehicle cleaner 50 is mounted on the motorcycle 10. However, the present invention is not limited to this, and the vehicle cleaner may be a tricycle or a four-wheeled vehicle. It may be.

[0027]

According to the present invention, the following effects are exhibited by the above configuration. Claim 1 attaches an air cleaner element to a ceiling of the dirty side air chamber, arranges a clean side air chamber above and behind the dirty side air chamber, and arranges an auxiliary air chamber below the dirty side air chamber,
Since the auxiliary air chamber is communicated with the clean side air chamber, the capacity of the substantial clean side air chamber can be increased. As a result, it is possible to reduce intake noise by increasing the capacity of the clean side air chamber. In addition, when the response is improved by sudden opening that makes the response of the engine a problem, that is, when a large amount of air is required in a short time, the air in the auxiliary air chamber can be used. Furthermore, by forming the auxiliary air chamber below the dirty side air chamber, for example, a large protrusion is not formed, so that the degree of freedom in layout around the vaporizer can be increased.

A second aspect of the present invention is that the air cleaner element can function as an effective heat insulating layer even when the air cleaner is disposed immediately above the engine. Can be protected.

[Brief description of the drawings]

FIG. 1 is a side view of a motorcycle equipped with a vehicle air cleaner according to the present invention.

FIG. 2 is a side view showing the arrangement of parts around a vehicle air cleaner according to the present invention.

FIG. 3 is a perspective view showing an arrangement of components around a vehicle air cleaner according to the present invention.

FIG. 4 is an exploded perspective view of the vehicle air cleaner according to the present invention.

FIG. 5 is a side sectional view of the vehicle air cleaner according to the present invention.

FIG. 6 is a diagram illustrating the operation of the vehicle air cleaner according to the present invention.

FIG. 7 is a side sectional view of a vehicle air cleaner according to another embodiment of the present invention.

FIG. 8 is a side sectional view of a vehicle air cleaner according to yet another embodiment of the present invention.

[Description of Signs] 21 ... engine, 50 ... air cleaner for vehicle, 51 ... case (air cleaner case), 52 ... air cleaner element, 59 ... ceiling, 61 ... dirty side air chamber, 6
2 ... clean side air chamber, 63 ... auxiliary air chamber.

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Tomomi Yubara 1-4-1 Chuo, Wako-shi, Saitama Pref. Inside Honda R & D Co., Ltd. (72) Inventor Mitsuru Yokoyama 1-4-1 Chuo, Wako-shi, Saitama No. In Honda R & D Co., Ltd.

Claims (2)

[Claims] 1. An air cleaner for a vehicle in which an air cleaner element is housed in a case and divided into a dirty side air chamber and a clean side air chamber by the air cleaner element, wherein the air cleaner element is mounted on a ceiling of the dirty side air chamber. A clean side air chamber is arranged above and behind the side air chamber, and an auxiliary air chamber is arranged below the dirty side air chamber, and the auxiliary air chamber communicates with the clean side air chamber. Air cleaner for vehicles. 2. The vehicle air cleaner according to claim 1, wherein the air cleaner is disposed immediately above an engine.