CN204851383U - Outer back pressure car amortization drum - Google Patents
Outer back pressure car amortization drum Download PDFInfo
- Publication number
- CN204851383U CN204851383U CN201520527802.8U CN201520527802U CN204851383U CN 204851383 U CN204851383 U CN 204851383U CN 201520527802 U CN201520527802 U CN 201520527802U CN 204851383 U CN204851383 U CN 204851383U
- Authority
- CN
- China
- Prior art keywords
- hush pipe
- pipe
- back pressure
- hush
- drum
- 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 - Fee Related
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- Exhaust Silencers (AREA)
Abstract
The utility model discloses an outer back pressure car amortization drum, including the casing, the both sides of casing respectively are equipped with a baffle, are equipped with first hush pipe and second hush pipe between the baffle, are equipped with the wedge bloop on the pipe wall of first hush pipe and second hush pipe, and the opening direction of wedge bloop is opposite with airflow direction, are equipped with the one deck wire net on the outer wall of first hush pipe and second hush pipe, are equipped with the amortization cotton between the inner wall of wire net and casing, the gas outlet of first hush pipe one end is connected through the back flow that sets up outside the casing with the air inlet of second hush pipe one end. The utility model discloses have the torsion of engine in the time of can improving the slow -speed of revolution, noise cancelling effect is good, the cotton difficult not hard up beneficial effect of amortization.
Description
Technical field
The utility model relates to a kind of automobile silencing drum, particularly a kind of outer back pressure automobile silencing drum.
Background technique
Noise reduction drum is the vitals in automobile exhaust system, noise reduction drum mostly in the past is in line drum, by arranging hush pipe and silencing cotton in drum, hush pipe stretches into from noise reduction drum side, stretch out from opposite side, it is single structure, the silencing cotton layer that vehicle exhaust is entered outside pipe by the through hole on hush pipe tube wall through hush pipe carries out noise reduction, its smooth in exhaust, the horsepower tool of motor during high rotating speed is had a distinct increment, but castering action is not had to the torsion of motor during the slow-speed of revolution, therefore, for low discharge capacity automobile not too applicable, and erasure effect is not ideal, noise is larger.Find after deliberation, in noise reduction drum, arrange multi-chamber, tail gas enters noise reduction drum from the suction tude of noise reduction drum, and discharge from outlet pipe form back pressure in back pressure chamber after, the back pressure of formation has castering action to torsion during low engine speeds again.Therefore be necessary to design and a kind ofly to the torsion of motor during the slow-speed of revolution, there is castering action, and the noise reduction of good muffling effect drum.
Summary of the invention
The purpose of this utility model is, provides a kind of outer back pressure automobile silencing drum.The utility model has the torsion of motor when can improve the slow-speed of revolution, and the feature of good muffling effect, in addition, the utility model also has the feature that silencing cotton not easily loosens.
The technical solution of the utility model: a kind of outer back pressure automobile silencing drum, include housing, the both sides of housing are respectively provided with a baffle plate, the first hush pipe and the second hush pipe is provided with between baffle plate, the tube wall of the first hush pipe and the second hush pipe is provided with the wedge shape bloop caved inward, the opening direction of wedge shape bloop is contrary with airflow direction, and the outer wall of the first hush pipe and the second hush pipe is provided with layer of steel wire net, is provided with silencing cotton between steel wire and the inwall of housing; The air outlet of the first hush pipe right-hand member is connected with the reflow pipe of suction port through being arranged on hull outside of the second hush pipe left end.
Aforesaid outer back pressure automobile silencing drum, described wedge shape bloop is spirally distributed on the first hush pipe and the second hush pipe.
The beneficial effects of the utility model: the utility model by arranging the first hush pipe and the second hush pipe in the housing of noise reduction drum, the air outlet of the first hush pipe is communicated with through reflow pipe with the suction port of the second hush pipe, vehicle exhaust enters in housing from the suction port of the first hush pipe, housing is flowed out through the air outlet of the first hush pipe, again housing is entered after entering the second hush pipe again after reflow pipe water conservancy diversion, the formation of waste gas in this increased periods drum, thus formation back pressure, improve the torsion of motor during the slow-speed of revolution, make vehicle starting fast, climbing is strong.Simultaneously, due to the first hush pipe and the second hush pipe being distributed with wedge shape bloop, wedge shape bloop is the domatic pod apertures by inside for the tube wall of hush pipe rolling being formed HALF OPENING shape, its opening direction is contrary with exhaust gas flow direction, air-flow is easily flowed out hush pipe by after its water conservancy diversion, thus the silencing cotton layer entered outside hush pipe carries out noise reduction, good muffling effect, first hush pipe and the second hush pipe carry out 2 noise reductions to tail gas, further increase erasure effect.In addition, the outer tube wall of the first hush pipe of the present utility model and the second hush pipe is provided with layer of steel wire net, because the friction factor between steel wire and silencing cotton is greater than the friction factor between hush pipe outer tube wall and silencing cotton, be therefore easier to twining of silencing cotton layer and tie up, silencing cotton not easily loosens.Wedge shape bloop of the present utility model distributes in the shape of a spiral, improves the area of contact of wedge shape bloop and exhaust gas flow, further increases erasure effect.In sum, the utility model has the torsion of motor when can improve the slow-speed of revolution, good muffling effect, the beneficial effect that silencing cotton not easily loosens.
The utility model is specially adapted to the low discharge capacity automobile that discharge capacity is less than 2.0.
Accompanying drawing explanation
Accompanying drawing 1 is structural representation of the present utility model;
Accompanying drawing 2 is the structural representation in housing;
Accompanying drawing 3 is the sectional view of hush pipe.
Description of reference numerals: 1-housing, 2-baffle plate, 3-first hush pipe, 4-second hush pipe, 5-wedge shape bloop, 6-steel wire, 7-reflow pipe, 8-air outlet, 9-suction port.
Embodiment
Below in conjunction with drawings and Examples, the utility model is further described, but not as the foundation limited the utility model.
Embodiment of the present utility model: a kind of outer back pressure automobile silencing drum, as illustrated in the accompanying drawings from 1 to 3, include housing 1, the both sides of housing 1 are respectively provided with a baffle plate 2, the first hush pipe 3 and the second hush pipe 4 is provided with between baffle plate 2, the tube wall of the first hush pipe 3 and the second hush pipe 4 is provided with the wedge shape bloop 5 caved inward, the opening direction of wedge shape bloop 5 is contrary with airflow direction, the outer wall of the first hush pipe 3 and the second hush pipe 4 is provided with layer of steel wire net 6, is provided with silencing cotton between the inwall of steel wire 6 and housing 1; The air outlet 8 of the first hush pipe 3 right-hand member is connected through the reflow pipe 7 be arranged on outside housing 1 with the suction port 9 of the second hush pipe 4 left end.
Described wedge shape bloop 5 is spirally distributed on the first hush pipe 3 and the second hush pipe 4.
Working principle of the present utility model: vehicle exhaust enters in the housing 1 of noise reduction drum through the suction port of the first hush pipe 3, due to the first hush pipe 3 tube wall being distributed with wedge shape bloop 5, wedge shape bloop 5 is the ramp shaped pod apertures by the HALF OPENING inside for the tube wall of hush pipe rolling formed, its opening direction is contrary with airflow direction, air-flow flows out the first hush pipe 3 and enters silencing cotton layer outside pipe after its water conservancy diversion, good muffling effect, after reflow pipe 7 water conservancy diversion, the second hush pipe 4 is flowed into after residual gas stream flows out the first hush pipe 3, reenter in housing, carry out second time noise reduction, further increase erasure effect.Simultaneously this reflux course extends the formation of waste gas in noise reduction drum, forms the torsion of motor when back pressure improves the slow-speed of revolution.
As preferably, wedge shape bloop 5 of the present utility model distributes in the shape of a spiral, and improve the area of contact of itself and air-flow, erasure effect is better.
Claims (2)
1. an outer back pressure automobile silencing drum, it is characterized in that: include housing (1), the both sides of housing (1) are respectively provided with a baffle plate (2), the first hush pipe (3) and the second hush pipe (4) is provided with between baffle plate (2), the tube wall of the first hush pipe (3) and the second hush pipe (4) is provided with the wedge shape bloop (5) caved inward, the opening direction of wedge shape bloop (5) is contrary with airflow direction, the outer wall of the first hush pipe (3) and the second hush pipe (4) is provided with layer of steel wire net (6), silencing cotton is provided with between the inwall of steel wire (6) and housing (1), the air outlet (8) of the first hush pipe (3) one end is connected with the reflow pipe (7) of the suction port (9) of the second hush pipe (4) one end through being arranged on housing (1) outside.
2. outer back pressure automobile silencing drum according to claim 1, is characterized in that: described wedge shape bloop (5) is spirally distributed on the first hush pipe (3) and the second hush pipe (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520527802.8U CN204851383U (en) | 2015-07-21 | 2015-07-21 | Outer back pressure car amortization drum |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520527802.8U CN204851383U (en) | 2015-07-21 | 2015-07-21 | Outer back pressure car amortization drum |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204851383U true CN204851383U (en) | 2015-12-09 |
Family
ID=54741941
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520527802.8U Expired - Fee Related CN204851383U (en) | 2015-07-21 | 2015-07-21 | Outer back pressure car amortization drum |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204851383U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106930803A (en) * | 2017-04-18 | 2017-07-07 | 泰山学院 | A kind of Combined type muffling unit for exhaust silencer for internal-combustion engine |
-
2015
- 2015-07-21 CN CN201520527802.8U patent/CN204851383U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106930803A (en) * | 2017-04-18 | 2017-07-07 | 泰山学院 | A kind of Combined type muffling unit for exhaust silencer for internal-combustion engine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151209 Termination date: 20170721 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |