CN1268619A - Vibration movement type internal combustion engine sound-absorbing structure - Google Patents
Vibration movement type internal combustion engine sound-absorbing structure Download PDFInfo
- Publication number
- CN1268619A CN1268619A CN00105327A CN00105327A CN1268619A CN 1268619 A CN1268619 A CN 1268619A CN 00105327 A CN00105327 A CN 00105327A CN 00105327 A CN00105327 A CN 00105327A CN 1268619 A CN1268619 A CN 1268619A
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- China
- Prior art keywords
- air
- strainer
- machine unit
- unit shell
- combustion engine
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000002485 combustion reaction Methods 0.000 title claims description 25
- 230000033001 locomotion Effects 0.000 title claims description 22
- 239000011358 absorbing material Substances 0.000 claims abstract description 13
- 230000005540 biological transmission Effects 0.000 abstract description 16
- 230000000694 effects Effects 0.000 abstract description 3
- 238000002955 isolation Methods 0.000 abstract 1
- 239000003638 chemical reducing agent Substances 0.000 description 8
- 239000000463 material Substances 0.000 description 4
- 230000004308 accommodation Effects 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000002828 fuel tank Substances 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B77/00—Component parts, details or accessories, not otherwise provided for
- F02B77/11—Thermal or acoustic insulation
- F02B77/13—Acoustic insulation
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- General Details Of Gearings (AREA)
- Arrangement Of Transmissions (AREA)
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
- Vibration Prevention Devices (AREA)
- Exhaust Silencers (AREA)
Abstract
The invention provides a high noise reduction effect at a low cost and improve appearance without increasing the number of part items. This sound isolation structure has a V-belt type automatic transmission and is supported to swing with respect to a motorcycle body 2. In this case, an air cleaner 25 is attached to the outer periphery of a unit case 20, and the outside wall 25a of the air cleaner 25 is extended to the outside of the unit case 20 so as to cover the outside face of the unit case 20. A sound absorbing material 27 is arranged between the section 25b, comprising the outside wall 25a of the air cleaner 25 extended to the outside of the unit case 20 and to the outside of the unit case 20.
Description
The application's invention relates to the sound-absorbing structure of vibration movement type internal combustion engine, particularly relates to rotational noise that realization sends from machine unit shell and the sound-absorbing structure of the vibration movement type internal combustion engine of the reduction of the suction noise sent from air-strainer.
Always, in vibration movement type internal combustion engine, in order to reduce the rotational noise that sends from the machine unit shell of accommodating transmission device,, between the outer side surface of this anti-acoustic shell and machine unit shell, lay anti-sound material (with reference to No. 2796105 communique of Japan Patent) with the outer side surface of anti-acoustic shell coating member housing.
In addition,, work hard, implement the noise countermeasure at the material or the aspects such as wall thickness, shape of air-strainer for the suction noise of sending from air-strainer.
, in order to reduce the rotational noise that sends from machine unit shell, being needs special-purpose anti-acoustic shell with the outer side surface person of anti-acoustic shell covering machine unit shell, and existing part number increases such problem.
In addition, in order to reduce the suction noise of sending from air-strainer, working hard at the material or the aspects such as wall thickness, shape of air-strainer, also is limited, calculates on the further reduction of noise.
Its purpose of the application's invention is, the foregoing problems that the sound-absorbing structure of the vibration movement type internal combustion engine of solution prior art exists, providing a kind of can not increase part number and obtain the sound-absorbing structure that high noise reduces the vibration movement type internal combustion engine of effect at an easy rate.
The application's invention relates to the sound-absorbing structure of the vibration movement type internal combustion engine that solves foregoing problems, the sound-absorbing structure of the vibration movement type internal combustion engine of the present invention's first scheme, has the V-belt automatic speed variator, swing is supported on the car body freely, it is characterized in that, on the periphery of aforementioned machine unit shell air-strainer is installed, the outer wall side of aforementioned air-strainer is made the outside that extends to aforementioned machine unit shell, covers the outer side surface of aforementioned machine unit shell.
Above-mentioned first scheme of the present invention, owing to constitute as previously mentioned, so can use the part that the outer side wall of air-strainer extends to the outside of machine unit shell as anti-acoustic shell, thereby can be shared air-strainer and anti-acoustic shell, can not increase part number, and reduce the rotational noise that sends from machine unit shell at an easy rate.
Whereby, because the housing of air-strainer maximizes, its weight does not increase in having the scope of obstacle, so the natural frequency of air-strainer reduces, air-breathing resonance is lowered, and can reduce the suction noise of sending from air-strainer.
In addition, owing to the part that machine unit shell and air filter housing disposed becomes and can cover with a plate, so can improve this a part of aesthetic appearance.
The sound-absorbing structure of the vibration movement type internal combustion engine of alternative plan of the present invention on the basis of above-mentioned first scheme, extends at the outer side wall of air-strainer between the outer surface of the part in the outside of part case and part case, lays sound-absorbing material.
As a result, absorbed by sound-absorbing material owing to the rotational noise that sends from machine unit shell with from the suction noise that air-strainer sends, so can further reduce these noises.
Accompanying drawing is simply described as follows:
Fig. 1 is the left side view of pedal-type two-wheel motorcycle of vibration movement type internal combustion engine of sound-absorbing structure of having installed an embodiment of utilization the present invention first scheme and alternative plan.
Fig. 2 be along the intercepting of the II-II line of Fig. 1 to looking longitudinal section.
Fig. 3 is machine unit shell and the air filter housing partial enlarged drawing of Fig. 1.
Fig. 4 be along the intercepting of the IV-IV line of Fig. 3 to looking general profile chart.
Fig. 5 is the embodiment's of presentation graphs 1 the figure same with Fig. 3 of variation.
Fig. 6 is the embodiment's of presentation graphs 1 the figure same with Fig. 4 of another variation.
Below, just first scheme of the present invention shown in Fig. 1 to Fig. 4 and an embodiment of alternative plan describe.
Fig. 1 is a left side view of having installed the two-wheeled motor vehicle of the vibration movement type internal combustion engine that uses the sound-absorbing structure in the present embodiment, Fig. 2 be along the intercepting of the II-II line of Fig. 1 to looking longitudinal section, Fig. 3 is machine unit shell and the air filter housing partial enlarged drawing of Fig. 1, Fig. 4 be along the intercepting of the IV-IV line of Fig. 3 to looking general profile chart.
In Fig. 1 and Fig. 2, installed the pedal-type two-wheel motorcycle 0 of the vibration movement type internal combustion engine of the sound-absorbing structure in the utilization present embodiment, rotation is installed with front fork 4 freely in the vertical tube of front fork 3 of the cradle type vehicle frame 2 that becomes its car body, lower end at front fork 4, front-wheel 5 and front mudguard 6 are installed, in addition, connecting handlebar 7 in the top.
In the cradle space that each pipe by vehicle frame 2 surrounds, disposing fuel tank 8, radiator respectively with water tank 9, radiator 10 with have the vibration movement type internal combustion engine (hereinafter referred to as the power unit) 1 of water-cooled engine main body 11.
Near the central authorities substantially of power unit 1 the place ahead part is installed on the vehicle frame 2 by linkage mechanism 13, and portion is suspended on the vehicle frame 2 by posterior bumper 14 in its back-end.At the rear portion of power unit 1 trailing wheel 15 is installed.
Above the rear portion of vehicle frame 2, dispose vehicle seat 16, crossing over the total length from the front portion to the rear portion of vehicle frame 2, laying the car cover 17 of all parts of the top and bottom, front-back and the left and right sides face that cover vehicle.
Body of the internal-combustion engine 11 is overhead cam (OHC) formula internal-combustion engines, and cylinder head 39 integrally is connected on the cylinder 33 by unillustrated bolt among the figure, and during to-and-fro motion, this to-and-fro motion converts rotatablely moving of bent axle 23 to via connecting rod 35 to piston 34 in cylinder 33.In Fig. 2 of bent axle 23, on the left end, connecting the slave end of V-belt automatic speed variator 28.
Actuating unit is made of V-belt automatic speed variator 28, centrifugal clutch 18, gear reducer 21 etc., accommodates these the transmission case and the crankcase of body of the internal-combustion engine 11 and makes one, forms machine unit shell 20.
The 2nd housing section 20b, the part that is equivalent to crankcase that comprises machine unit shell 20 is along cylinder axis left-half in Fig. 2 of middle branch, become right half part among Fig. 2 of the part that is equivalent to transmission case of machine unit shell 20, in this Fig. 2, down on the quadrate part, be provided with the accommodation section 22 of gear reducer 21.
The 3rd housing section 20c, the part that is equivalent to crankcase that comprises machine unit shell 20 is along cylinder axis right half part in Fig. 2 of middle branch, becomes left-half among Fig. 2 of the housing of accommodating alternator 24.Alternator 24 is installed among Fig. 2 of bent axle 23 of body of the internal-combustion engine 11 on the right-hand member.
The 1st housing section 20a plays a part the cover that from Fig. 2 left covers the 2nd housing section 20b.In addition, the 4th housing section 20d plays a part the cover of right-hand covering the 3rd housing section 20c from Fig. 2.
Above the periphery of the part that is equivalent to transmission case of machine unit shell 20, as shown in fig. 1, air-strainer 25 is installed.The housing of this air-strainer 25 is a resin system, as shown in Figure 4, and by the C of left and right sides half point body at Fig. 3
1～C
5The position link into an integrated entity by unillustrated bolt among the figure and constitute.
The installation of 25 pairs of machine unit shells 20 of air-cleaner box, by the platform on the outstanding diapire that is arranged on air-strainer 25, in the A of Fig. 3 portion and B portion, bolt is connected on the boss part that bloats formation on above the periphery of machine unit shell 20 and carries out.
The outer side wall 25a of the bottom wall portion of the half point body of left among formation Fig. 4 of air-strainer 25 as shown in Fig. 1, Fig. 3 and Fig. 4, extends to the outside of the part that is equivalent to transmission case of machine unit shell 20, is covered with the outer side surface that this is equivalent to the part of transmission case.
And, between the outer wall side (part that is equivalent to transmission case of the 1st housing section 20a) of the part that is equivalent to transmission case of this prolongation 25b and machine unit shell 20, laying sound-absorbing material 27 (with reference in Fig. 1, Fig. 3 and Fig. 4, the part of the refusing yin that knits a net hachure) all sidedly.
The whir of these sound-absorbing material 27 absorption bent axles 23, the grating of V-belt automatic speed variator 28, the engagement sound each other of the gear in the gear reducer 21 etc. reduce its noise level from the rotational noise that machine unit shell 20 sends.
So, can suppress the vibration of prolongation 25b, can further strengthen simultaneously the installation of 25 pairs of machine unit shells 20 of air-strainer, can face the moving up and down of fierceness of the uneven machine unit shell that causes 20 on road surface and suppress the motion of air-strainer 25, and prevent from the vibration of air-strainer 25 from can alleviate the stress loading on assembly department A, the B that acts on 25 pairs of machine unit shells 20 of air-strainer.
On the outer side wall 25a of air-strainer 25,, the air suction 25c of portion (with reference to Fig. 3) in air-strainer 25 is being set though at length do not draw in the drawings.The air suction inlet of this air suction 25c of portion points to rear view of vehicle and forms (right-hand among Fig. 3).On vehicle front (left among Fig. 1) part of air-strainer 25, connecting sucking pipe 26, in the centre of this sucking pipe 26,, connecting Carburetor though at length do not draw in the drawings.
On the vehicle front part of the 1st housing section 20a of machine unit shell 20, as shown in Fig. 1 to Fig. 3, the air that V-belt automatic speed variator 28 usefulness such as grade in the cooling machine unit shell 20 are installed sucks with conduit 29.
This air sucks with conduit 29 as shown in Figure 2, integrally assembles by left and right sides half point body (interior outside mask) 29a, 29b to constitute, and the rear view of vehicle side of elongated portion is provided with air suction inlet above it.
When being assembled in the air suction on the 1st housing section 20a with conduit 29, two near points body 29a, 29b are by the E of bolt 30 at Fig. 3
1～E
4The position be fixed together.Moreover, the 40th, air outlet is located at the bottom of the rear view of vehicle part of machine unit shell 20.
Therefore, when body of the internal-combustion engine 11 was in running state now, if piston 34 to-and-fro motion in cylinder 33, then this to-and-fro motion converted rotatablely moving of bent axle 23 to via connecting rod 35,28 rotations of V-belt automatic speed variator.
If the rotating speed of V-belt automatic speed variator 28 rises, then the inner ring with the centrifugal clutch 18 of V-belt automatic speed variator 28 rotations contacts with the outer ring, and clutch 18 becomes jointing state, and its rotation is exported and is input to gear reducer 21 via main shaft 31.
Be input to the rotation output of the V-belt automatic speed variator 28 of gear reducer 21, then the meshing relation of stipulating each other via the gear on the rear axle shaft 37 that is located at main shaft 31, countershaft 36, the final axle of conduct respectively is output as the rotatablely moving of trailing wheel 15 that is installed on the rear axle shaft 37.
In the middle of this, gear in the grating of the whir of bent axle 23, V-belt automatic speed variator 28, the gear reducer 21 rotational noises such as engagement sound each other, though disperse to the outside via machine unit shell 20, absorbed by the sound-absorbing material 27 between the outer side wall (part that is equivalent to transmission case of the 1st housing section 20a) of the part that is equivalent to transmission case of the prolongation 25b of the air-strainer 25 that is laid in and machine unit shell 20.
Present embodiment is owing to constitute as previously mentioned, so further performance effect as following.
Owing to can the part 25b that the outer side wall 25a of air-strainer 25 extends to the outside of part case 20 be used as anti-acoustic shell, so can be shared air-strainer 25 and anti-acoustic shell, can not increase part number, and reduce the rotational noise that sends from machine unit shell 20 at an easy rate.
Whereby, because air-strainer 25 maximizes, the weight of its housing does not increase in having the scope of obstacle, so the natural frequency of air-strainer 25 reduces, air-breathing resonance is lowered, and can reduce the suction noise of sending from air-strainer 25.
In addition, because the part that machine unit shell 20 (part that is equivalent to transmission case) and air-strainer 25 are disposed becomes and can cover with a plate, so can improve this a part of aesthetic appearance.
And then, the outer wall side 25a of air-strainer 25 extends between the outer surface of the part 25b in the outside of machine unit shell 20 and machine unit shell 20 (part that is equivalent to transmission case) because sound-absorbing material 27 is laid in, so the rotational noise that sends from machine unit shell 20 and absorbed by sound-absorbing material 27 from the suction noise that air-strainer 25 sends can further reduce these noises.
In the present embodiment, though air sucks half point body (outside mask) 29a with left among Fig. 2 of conduit (intake guide) 29, the part 25b that extends to the outside of machine unit shell 20 with the outer side wall 25a of air-strainer 25 separates formation, but be not limited thereto, also can integrally form them with same material as shown in Figure 5.
In Fig. 5, the 38th, the anti-acoustic shell of the integrated of Xing Chenging like this, the anti-acoustic shell 38 of this integrated comprise the part 25b in the outer side wall 25a of air-strainer 25, the outside that this outer side wall 25a extends to machine unit shell 20 and are equivalent to air and suck part with the left half point body 29a of conduit 29.
So, because the outer side wall 25a of air-strainer 25 can form with a common plate to the left half point body 29a that the elongated portion 25b and the air of its below sucks with conduit 29, so part number can further reduce.
In addition, because the weight that the weight of the housing of air-strainer 25 and air suck with the cover of conduit 29 increases respectively, so their natural frequency reduces, air-breathing resonance is lowered, from then on the one hand, also can reduce the suction noise sent from air-strainer 25 and suck the suction noise of sending with conduit 29 from air.
In addition, suck the part that is disposed with conduit 29 and all use a plate (whole prevent acoustic shell 38) to cover owing to become machine unit shell 20, air-strainer 25 and air, so can further improve this a part of aesthetic appearance.
And then, in the present embodiment, though on the outer side wall 25a of air-strainer 25, do not lay sound-absorbing material 27, but as this variation, also can consider to make as shown in Figure 6, also lay sound-absorbing material 27, anti-acoustic shell 39 is made as single component in this part, make it to cross air-strainer 25, cover the installation of sound-absorbing material 27 from machine unit shell 20.So, can further reduce the suction noise of sending from air-strainer 25.
So, because can moving up and down in the face of the fierceness of the uneven machine unit shell that causes 20 on road surface, suppress the motion of air-strainer 25 well, so can prevent the vibration of air-strainer 25, and alleviate the stress loading on assembly department A, the B that acts on 25 pairs of machine unit shells 20 of air-strainer.
Claims (2)
1. the sound-absorbing structure of a vibration movement type internal combustion engine, this internal-combustion engine has the V-belt automatic speed variator, and swing is supported on the car body freely, it is characterized in that:
On the periphery of machine unit shell, air-strainer is installed,
The outer side wall of aforementioned air-strainer is made the outside that extends to aforementioned machine unit shell, covers the outer side surface of aforementioned machine unit shell.
2. the sound-absorbing structure of the vibration movement type internal combustion engine described in the claim 1 is characterized in that: extend at the outer side wall of aforementioned air-strainer between the outer side surface of the part in the outside of aforementioned machine unit shell and aforementioned machine unit shell, lay sound-absorbing material.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11092880A JP2000282892A (en) | 1999-03-31 | 1999-03-31 | Sound isolation structure of unit swing type internal combustion engine |
| JP092880/1999 | 1999-03-31 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1268619A true CN1268619A (en) | 2000-10-04 |
| CN1103866C CN1103866C (en) | 2003-03-26 |
Family
ID=14066774
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN00105327A Expired - Fee Related CN1103866C (en) | 1999-03-31 | 2000-03-31 | Vibration movement type internal combustion engine sound-absorbing structure |
Country Status (5)
| Country | Link |
|---|---|
| JP (1) | JP2000282892A (en) |
| CN (1) | CN1103866C (en) |
| ES (1) | ES2178541B1 (en) |
| IT (1) | IT1320000B1 (en) |
| TW (1) | TW448870U (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4989510B2 (en) * | 2008-02-20 | 2012-08-01 | 本田技研工業株式会社 | Motorcycle sound insulation structure with a resonator |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07247854A (en) * | 1994-03-14 | 1995-09-26 | Suzuki Motor Corp | Integral type power unit |
| JP3620076B2 (en) * | 1995-02-01 | 2005-02-16 | スズキ株式会社 | Scooter type small vehicle |
| JP3467977B2 (en) * | 1996-07-24 | 2003-11-17 | スズキ株式会社 | Exhaust gas purification device for scooter type vehicle |
-
1999
- 1999-03-31 JP JP11092880A patent/JP2000282892A/en active Pending
-
2000
- 2000-03-28 ES ES200000757A patent/ES2178541B1/en not_active Expired - Fee Related
- 2000-03-29 TW TW089205004U patent/TW448870U/en not_active IP Right Cessation
- 2000-03-30 IT IT2000TO000301A patent/IT1320000B1/en active
- 2000-03-31 CN CN00105327A patent/CN1103866C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| TW448870U (en) | 2001-08-01 |
| ITTO20000301A1 (en) | 2001-09-30 |
| IT1320000B1 (en) | 2003-11-12 |
| ES2178541B1 (en) | 2004-06-01 |
| JP2000282892A (en) | 2000-10-10 |
| ES2178541A2 (en) | 2002-12-16 |
| CN1103866C (en) | 2003-03-26 |
| ES2178541R (en) | 2003-01-01 |
| ITTO20000301A0 (en) | 2000-03-30 |
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