CN105971689A - Automobile exhaust muffler - Google Patents
Automobile exhaust muffler Download PDFInfo
- Publication number
- CN105971689A CN105971689A CN201610374609.4A CN201610374609A CN105971689A CN 105971689 A CN105971689 A CN 105971689A CN 201610374609 A CN201610374609 A CN 201610374609A CN 105971689 A CN105971689 A CN 105971689A
- Authority
- CN
- China
- Prior art keywords
- automobile exhaust
- exhaust muffler
- hole
- core pipe
- hole group
- 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.)
- Pending
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N1/00—Silencing apparatus characterised by method of silencing
- F01N1/08—Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling
- F01N1/10—Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling in combination with sound-absorbing materials
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N1/00—Silencing apparatus characterised by method of silencing
- F01N1/02—Silencing apparatus characterised by method of silencing by using resonance
- F01N1/04—Silencing apparatus characterised by method of silencing by using resonance having sound-absorbing materials in resonance chambers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N1/00—Silencing apparatus characterised by method of silencing
- F01N1/08—Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling
- F01N1/082—Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling the gases passing through porous members
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Exhaust Silencers (AREA)
Abstract
The invention discloses an automobile exhaust muffler. The automobile exhaust muffler comprises a housing with an air inlet and an air outlet, and further comprises a core tube arranged in the housing, wherein the two ends of the core tube face toward the air inlet and the air outlet respectively; a cavity is formed between the outer circumferential surface of the core tube and the inner circumferential surface of the housing; and the inner chamber of the core tube is communicated with the cavity. The automobile exhaust muffler is simple in structure, smooth in internal air intake and exhaust, low in power loss and good in muffling effect, and the working reliability of the automobile exhaust muffler is greatly improved.
Description
Technical field
The present invention relates to technical field of automobile, be specifically related to a kind of automobile exhaust muffler.
Background technology
Acoustic filter is the device of abatement pneumatic noise, is installed in pipeline or on inlet and outlet mouth, air-flow by while noise had certain consumption.Existing acoustic filter intake and exhaust resistance is bigger, and air flow property is poor, greatly reduces the reliability of acoustic filter work.
Summary of the invention
The technical problem to be solved is for problem of the prior art, it is provided that a kind of soundproof effect is good, the automobile exhaust muffler that exhaust resistance is little.
For reaching above-mentioned purpose, the technical solution used in the present invention is:
A kind of automobile exhaust muffler, including the housing with air inlet and air vent, described automobile exhaust muffler also includes the core pipe being arranged in described housing, the two ends of described core pipe are respectively facing described air inlet and described air vent, forming a cavity between outer circumference surface and the inner peripheral surface of described housing of described core pipe, the inner chamber of described core pipe connects with described cavity.
Preferably, described core tube cavity and the first hole group of described cavity and the second hole group it is communicated with on described core pipe, described first hole group and described second hole group all have many groups, often organize described first hole group and include multiple first hole, multiple described first holes are spaced setting along the axial direction of described core pipe, often organize described second hole group and include multiple second hole, multiple described second holes are spaced along the axial direction interval setting of described core pipe, the described first hole group of many groups and described second hole group along the circumferential direction of described core pipe and are arranged alternately.
Further, described first hole has 21, and described second hole has 20.
Further, the diameter in described first hole and described second hole is 3.5mm.
Further, described first hole group and described second hole group are respectively provided with 14 groups.
Preferably, described automobile exhaust muffler also includes the acoustical cotton being arranged in described cavity.
Preferably, described air inlet and described air vent lay respectively at the both sides on described shell length direction, and the central axis of described air inlet and described air vent extends along same rectilinear direction.
Due to the utilization of technique scheme, the present invention compared with prior art has the advantage that the automobile exhaust muffler simple in construction of the present invention, and internal intake and exhaust are smooth and easy, and power attenuation is little, and soundproof effect is good, substantially increase the reliability of acoustic filter work.
Accompanying drawing explanation
Accompanying drawing 1 is the structural representation of the automobile exhaust muffler of the present invention.
Detailed description of the invention
With specific embodiment, technical scheme is further elaborated below in conjunction with the accompanying drawings.
Automobile exhaust muffler shown in Figure 1, is provided with air inlet 11 and air vent 12 including housing 1, housing 1.Preferably, air inlet 11 and air vent 12 lay respectively at the both sides on the length direction of housing 1, and the central axis of air inlet 11 and air vent 12 extends along same rectilinear direction.
This automobile exhaust muffler also includes the core pipe 2 being arranged in housing 1, and the both ends of core pipe 2 are respectively facing air inlet 11 and air vent 12, forms a cavity 3 between the outer circumference surface and the inner peripheral surface of housing 1 of core pipe 2, this cavity 3 and the intracavity inter-connection of core pipe 2.
Concrete, core pipe 2 is communicated with the first hole group 21 and the second hole group 22 of cavity 3 and core pipe 2 inner chamber, the first hole group 21 and the second hole group 22 have many groups, and many groups the first hole group 21 and many groups the second hole group 22 are arranged alternately along the circumferential direction interval of core pipe 2.Each first hole group 21 includes multiple first hole, and multiple first holes are spaced setting along the axial direction of core pipe 2, and each second hole group 22 includes multiple second hole, and multiple second holes are spaced setting along the axial direction of core pipe 2.A kind of specific embodiment, the first hole group 21 and the second hole group 22 be equipped with 14 groups, and the first hole is provided with 21, and the second hole is provided with 20, and the first hole is identical with the diameter in the second hole, and its diameter is 3.5mm.
This automobile exhaust muffler also includes the acoustical cotton 4 being arranged in cavity 3, and this acoustical cotton can absorb the high frequency noise in vehicle exhaust.
During the work of this automobile exhaust muffler, air-flow flows into from the air inlet 11 of housing 1, and the inner chamber along core pipe 2 flows, and then flows out from the gas outlet 12 of housing 1.Air-flow flows in or out cavity 3 by the first hole group 21 above core pipe 2 and the second hole group 22, form a structure of resonant cavity, the medium-high frequency noise that this resonant cavity can absorb in vehicle exhaust, can absorb the high frequency noise in tail gas by the acoustical cotton 4 within cavity 3 simultaneously further.
This automobile exhaust muffler simple in construction, compact and reasonable, easy to assembly fast, connect reliable, absorbing medium-high frequency noise by resonant cavity and acoustical cotton, internal intake and exhaust are smooth and easy, and power attenuation is little, soundproof effect is good, substantially increases the reliability of acoustic filter work, it is easy to uses and promotes.
Above-described embodiment only for technology design and the feature of the present invention are described, its object is to allow person skilled in the art will appreciate that present disclosure and to implement according to this, can not limit the scope of the invention with this.All equivalence changes made according to spirit of the invention or modification, all should contain within protection scope of the present invention.
Claims (7)
1. an automobile exhaust muffler, including the housing with air inlet and air vent, it is characterized in that: described automobile exhaust muffler also includes the core pipe being arranged in described housing, the two ends of described core pipe are respectively facing described air inlet and described air vent, forming a cavity between outer circumference surface and the inner peripheral surface of described housing of described core pipe, the inner chamber of described core pipe connects with described cavity.
Automobile exhaust muffler the most according to claim 1, it is characterized in that: on described core pipe, be communicated with described core tube cavity and the first hole group of described cavity and the second hole group, described first hole group and described second hole group all have many groups, often organize described first hole group and include multiple first hole, multiple described first holes are spaced setting along the axial direction of described core pipe, often organize described second hole group and include multiple second hole, multiple described second holes are spaced setting along the axial direction of described core pipe, described first hole group and the described second hole groups organized are spaced along the circumferential direction of described core pipe and are arranged alternately more.
Automobile exhaust muffler the most according to claim 2, it is characterised in that: described first hole has 21, and described second hole has 20.
Automobile exhaust muffler the most according to claim 2, it is characterised in that: the diameter in described first hole and described second hole is 3.5mm.
Automobile exhaust muffler the most according to claim 2, it is characterised in that: described first hole group and described second hole group are respectively provided with 14 groups.
Automobile exhaust muffler the most according to claim 1, it is characterised in that: described automobile exhaust muffler also includes the acoustical cotton being arranged in described cavity.
Automobile exhaust muffler the most according to claim 1, it is characterised in that: described air inlet and described air vent lay respectively at the both sides on described shell length direction, and the central axis of described air inlet and described air vent extends along same rectilinear direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610374609.4A CN105971689A (en) | 2016-05-31 | 2016-05-31 | Automobile exhaust muffler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610374609.4A CN105971689A (en) | 2016-05-31 | 2016-05-31 | Automobile exhaust muffler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105971689A true CN105971689A (en) | 2016-09-28 |
Family
ID=57011337
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610374609.4A Pending CN105971689A (en) | 2016-05-31 | 2016-05-31 | Automobile exhaust muffler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105971689A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108625928A (en) * | 2018-06-14 | 2018-10-09 | 东风小康汽车有限公司重庆分公司 | A kind of muffler and automobile |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007131304A2 (en) * | 2006-05-12 | 2007-11-22 | Impulse Engine Techonology Pty Ltd | Exhaust muffler |
| CN204402622U (en) * | 2015-01-23 | 2015-06-17 | 安徽江淮汽车股份有限公司 | A kind of exhaust silencer |
| CN105402005A (en) * | 2015-12-18 | 2016-03-16 | 力帆实业(集团)股份有限公司 | Gas exhausting system and pre-muffler thereof |
| CN205117452U (en) * | 2015-11-20 | 2016-03-30 | 嘉兴职业技术学院 | Automobile silencer |
| CN205779125U (en) * | 2016-05-31 | 2016-12-07 | 清华大学苏州汽车研究院（相城） | A kind of automobile exhaust muffler |
-
2016
- 2016-05-31 CN CN201610374609.4A patent/CN105971689A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007131304A2 (en) * | 2006-05-12 | 2007-11-22 | Impulse Engine Techonology Pty Ltd | Exhaust muffler |
| CN204402622U (en) * | 2015-01-23 | 2015-06-17 | 安徽江淮汽车股份有限公司 | A kind of exhaust silencer |
| CN205117452U (en) * | 2015-11-20 | 2016-03-30 | 嘉兴职业技术学院 | Automobile silencer |
| CN105402005A (en) * | 2015-12-18 | 2016-03-16 | 力帆实业(集团)股份有限公司 | Gas exhausting system and pre-muffler thereof |
| CN205779125U (en) * | 2016-05-31 | 2016-12-07 | 清华大学苏州汽车研究院（相城） | A kind of automobile exhaust muffler |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108625928A (en) * | 2018-06-14 | 2018-10-09 | 东风小康汽车有限公司重庆分公司 | A kind of muffler and automobile |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160928 |
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| RJ01 | Rejection of invention patent application after publication |