CN2692354Y - Engine exhaust gas noise suppressor - Google Patents
Engine exhaust gas noise suppressor Download PDFInfo
- Publication number
- CN2692354Y CN2692354Y CN 200420039836 CN200420039836U CN2692354Y CN 2692354 Y CN2692354 Y CN 2692354Y CN 200420039836 CN200420039836 CN 200420039836 CN 200420039836 U CN200420039836 U CN 200420039836U CN 2692354 Y CN2692354 Y CN 2692354Y
- Authority
- CN
- China
- Prior art keywords
- flow control
- control valve
- fixed
- noise suppressor
- engine exhaust
- 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.)
- Expired - Lifetime
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- Exhaust Silencers (AREA)
Abstract
The utility model discloses a noise suppressor, in particular to an automobile engine exhaust gas noise suppressor. The engine exhaust gas noise suppressor comprises a noise suppressor shell body, a waste gas inlet tube and an exhaust tail tube A which are arranged in the noise suppressor shell body. The utility model is characterized in that the noise suppressor shell body is provided with an exhaust tail tube B, and the entrance end of the exhaust tail tube B is fixed with a flow control valve; the flow control valve comprises a disc valve, and the form of the disc valve is adapted with the entrance end of the exhaust tail tube B; the disc valve is fixed on a shaft, and the both ends of the shaft are torsion springs; one end of the torsion spring is fixed on a blast fence, and the other end of the torsion spring is fixed on the shell body of the flow control valve. The utility model has the advantages of simplicity and reasonableness, lower cost, etc.
Description
(1) technical field under
The utility model relates to a kind of silencing apparatus, particularly a kind of automobile engine to exhaust silencing apparatus.
(2) background technique
In the vehicle that moves at home, exhaust silencer is installed mostly at present, it mainly acts on is exactly the noise that produces when reducing engine running.Its working principle generally is that the sound wave that the motor combustion gas produces is amplified, dwindles in silencing apparatus inside, amplifies again, plays the noise elimination effect by sound wave is decayed.The shortcoming of this silencing apparatus is that the frequency of sound wave that motor produces when low speed and the high speed is not added differentiation.When high engine speeds turned round, the performance of the silencing apparatus performance when low speed with it was similar, but the performance difference of sound wave during at low speed with in high speed is very big.The noise that produces when the silencing apparatus that uses does not have special device to handle the high engine speeds running when high engine speeds turns round at present, make silencing apparatus poor-performing when high engine speeds turns round, noise even exceed laws and regulations requirement, this is that the result that sees is reluctant in vehicle production manufacturer.
(3) summary of the invention
The utility model is for remedying the deficiencies in the prior art, provide a kind of simple and reasonable, cost is lower, the engine exhaust muffler of the noise that produces in the time of can handling the high engine speeds running.
The utility model is realized by following technical measures:
A kind of engine exhaust muffler comprises suppressor case, is positioned at its exhaust gas entrance pipe and tailpipe A, and its special way is: be equipped with a tailpipe B in the described suppressor case, described tailpipe B entrance point is fixed with a flow control valve.
Engine exhaust muffler of the present utility model, described flow control valve comprise one with the suitable dish valve of tailpipe B entrance point shape, described dish valve is fixed on the axle that two ends are torsion spring, and torsion spring one end is fixed on the blast fence, and the other end is fixed on the flow control valve chest.
Further improvement of the utility model is that the bearing support place of described flow control valve chest is equipped with rolling bearing.
Of the present utility model further the improvement is that the bottom of described blast fence is concordant with the center line of exhaust gas entrance pipe; The afterbody of described blast fence and its body are perpendicular.
Working principle of the present utility model is: after the waste gas of motor discharge enters silencing apparatus inside by the silencing apparatus inlet duct, when engine speed is low, the momentum of motor combustion gas is not enough to promote the blast fence of flow control valve, make valve open, this moment, waste gas entered silencing apparatus inside by the bottom of inlet duct and the gap around the blast fence, was discharged to the silencing apparatus outside through silencing apparatus tailpipe A then.The noise of silencing apparatus when the effect in this stage is the optimization low engine speed, the growl that it produces in the time of can eliminating engine start.Raising along with engine speed, after its rotating speed reaches a certain specified value, the momentum of waste gas is enough to overcome the resistance of torsion spring, makes blast fence drive butterfly valve another root exhaust tail is opened, and this moment, the waste gas of motor can be discharged to outside the silencing apparatus by two tailpipes.Silencing apparatus is the hydrodynamic noise that produces when reducing motor in high speed in the effect in this stage.
Therefore, the utlity model has advantages such as advantages of simple, cost be lower.
(4) description of drawings
The utility model is described in further detail below in conjunction with accompanying drawing.
Fig. 1 looks schematic representation for the master of the utility model flow control valve.
Fig. 2 is the schematic side view of the utility model flow control valve.
Fig. 3 is a structural representation of the present utility model.
Among the figure: 1 flow control valve chest, 2 blast fences, 3 torsion springs, 4 rolling bearings, 5 screws, 6 butterfly valves, 7,8 waste gas population pipes, 9 suppressor cases, 10 dividing plates, 11 flow control valves, 12, dividing plate, 13 tailpipe B, 14 tailpipe A.
(5) embodiment
Fig. 1 and Fig. 2 are the structural representation of the utility model flow control valve.Butterfly valve 6 and blast fence 2 use screw 5 to be fixed on the axle 7, butterfly valve 6 is in flow control valve chest 1 inside, torsion spring 3 one ends are fixed on the blast fence 2, the other end is fixed on the flow control valve chest 1, at the bearing support place of flow control valve chest 1, the rotation of rolling bearing 4 with convenient axle 7 is installed.
Fig. 3 is a kind of specific embodiment of the present utility model.Flow control valve is installed in suppressor case 9 inside, at the rear portion of exhaust gas entrance pipe 8, and the front portion of tailpipe 13, and be fixed together with tailpipe 13; The bottom of blast fence 2 is concordant with the center line of exhaust gas entrance pipe 8.All the other structures and former silencing apparatus are basic identical.After the waste gas of motor discharge enters silencing apparatus inside by silencing apparatus population pipe 8, when engine speed is low, the momentum of motor combustion gas is not enough to promote the blast fence 2 of flow control valve 11, make valve open, this moment, waste gas entered silencing apparatus inside by the bottom of inlet duct 8 and the gap around the blast fence 2, was discharged to the silencing apparatus outside through the former tailpipe 14 of silencing apparatus then.The noise of silencing apparatus when the effect in this stage is the optimization low engine speed, the growl that produces when eliminating engine start.Raising along with engine speed, after its rotating speed reaches a certain specified value, the momentum of waste gas is enough to overcome the resistance of torsion spring 3, makes blast fence 2 drive butterfly valve 6 tailpipe 13 is opened, and this moment, the waste gas of motor can be discharged to outside the silencing apparatus by two gas tail pipes 13 and 14.Silencing apparatus is the hydrodynamic noise that produces when reducing motor in high speed in the effect in this stage.
Claims (4)
1. engine exhaust muffler, comprise suppressor case (9), be positioned at its exhaust gas entrance pipe (8) and tailpipe A (14), it is characterized in that: be equipped with a tailpipe B (13) in the described suppressor case (9), described tailpipe B (13) entrance point is fixed with a flow control valve.
2. engine exhaust muffler according to claim 1, it is characterized in that: described flow control valve comprise one with the suitable dish valve (6) of tailpipe B (13) entrance point shape, described dish valve (6) is fixed on the axle that two ends are torsion spring (3) (7), torsion spring (3) one ends are fixed on the blast fence (2), and the other end is fixed on the flow control valve chest (1).
3. engine exhaust muffler according to claim 1 and 2 is characterized in that: the bearing support place of described flow control valve chest (1) is equipped with rolling bearing (4).
4. engine exhaust muffler according to claim 3 is characterized in that: the bottom of described blast fence (2) is concordant with the center line of exhaust gas entrance pipe (8); Afterbody and its body of described blast fence (2) are perpendicular.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420039836 CN2692354Y (en) | 2004-04-16 | 2004-04-16 | Engine exhaust gas noise suppressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420039836 CN2692354Y (en) | 2004-04-16 | 2004-04-16 | Engine exhaust gas noise suppressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2692354Y true CN2692354Y (en) | 2005-04-13 |
Family
ID=34774037
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420039836 Expired - Lifetime CN2692354Y (en) | 2004-04-16 | 2004-04-16 | Engine exhaust gas noise suppressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2692354Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102635447A (en) * | 2012-04-11 | 2012-08-15 | 金华航宇汽配制造有限公司 | Noise-reducing device of silencer |
| CN109113835A (en) * | 2018-08-07 | 2019-01-01 | 拾音汽车科技（上海）有限公司 | A kind of exhaust noise control valve suitable for three-cylinder engine and hybrid vehicle |
-
2004
- 2004-04-16 CN CN 200420039836 patent/CN2692354Y/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102635447A (en) * | 2012-04-11 | 2012-08-15 | 金华航宇汽配制造有限公司 | Noise-reducing device of silencer |
| CN109113835A (en) * | 2018-08-07 | 2019-01-01 | 拾音汽车科技（上海）有限公司 | A kind of exhaust noise control valve suitable for three-cylinder engine and hybrid vehicle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20140416 Granted publication date: 20050413 |