CN201507339U - Automobile muffler - Google Patents
Automobile muffler Download PDFInfo
- Publication number
- CN201507339U CN201507339U CN2009202065700U CN200920206570U CN201507339U CN 201507339 U CN201507339 U CN 201507339U CN 2009202065700 U CN2009202065700 U CN 2009202065700U CN 200920206570 U CN200920206570 U CN 200920206570U CN 201507339 U CN201507339 U CN 201507339U
- Authority
- CN
- China
- Prior art keywords
- housing
- expansion chamber
- outlet pipe
- partition plate
- suction tude
- 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 provides an automobile muffler. A first partition plate and a second partition plate arranged in a casing divide the inside of the casing into a first expansion chamber, a second expansion chamber and a resistive muffler chamber in sequence; an air inlet pipe extends into the second expansion chamber after passing through a front end cover of the casing, the first partition plate and the second partition plate from the outside of the casing in sequence; an air outlet pipe penetrates through the casing after passing through the first partition plate, the second partition plate and a rear end cover of the casing from the first expansion chamber in sequence; a filtering pipe extends into the second expansion chamber after passing through the first partition plate and the second partition plate from the first expansion chamber; and parts of the air inlet pipe, the air outlet pipe and the filtering pipe positioned in the resistive muffler chamber are provided with micropores on the walls of the pipes. The output end of the air inlet pipe, the inlet end of the air outlet pipe and the inlet end of a transition pipe all adopt expansion port structures. The muffler can ensure that exhaust airflow is smoothly expanded and contracted; and after expansion and contraction, the speed of the exhaust airflow is greatly reduced, the exhaust back pressure is reduced, and the power and the torque of an engine are improved.
Description
Technical field
The utility model relates to the automotive silencing technology, is specifically related to a kind of automotive muffler.
Background technique
At present, the structure of employed automotive muffler is as follows on the automobile: in the housing of sealing, first, second dividing plate is arranged to vertical, space with housing shaft, and enclosure interior is isolated into first, second expansion chamber and three chambers of resistance noise reduction chamber.Suction tude, steam outlet pipe and transition tube and housing parallel to an axis, arrange the space.Suction tude penetrates in second expansion chamber after passing the front cover of housing and first, second dividing plate outward successively by housing.Steam outlet pipe passes housing after left chamber passes first, second dividing plate and rear end cover successively.Transition tube penetrates in second expansion chamber after first expansion chamber is passed first, second dividing plate.Suction tude, steam outlet pipe and transition tube are straight tube, are distributed with micropore on it.
The automotive muffler of above-mentioned prior art structure, because suction tude, steam outlet pipe and transition tube body are straight tube, exhaust airstream enters from suction tude, through transition tube, from the process that steam outlet pipe is discharged, gas is compressed by unexpected expansion, expansion, recompression causes air-flow velocity to increase, and the increase of exhaust airstream speed causes exhaust back pressure to increase, engine power, moment of torsion descends.
The model utility content
The technical problems to be solved in the utility model provides a kind of reduction exhaust back pressure, improves the automotive muffler of engine power and moment of torsion.
For solving the problems of the technologies described above, the technical solution of the utility model is as follows:
A kind of automotive muffler, in the housing of silencing apparatus, be provided with housing shaft to first, second vertical dividing plate, arrange first, second dividing plate space, and enclosure interior is isolated into first, second expansion chamber and three chambers of resistance noise reduction chamber successively; Described suction tude, steam outlet pipe and transition tube space are arranged in the housing, and with the housing parallel to an axis; Described suction tude stretches in second expansion chamber passed the front cover, first, second dividing plate of housing outward successively by housing after; Described steam outlet pipe passes housing pass the rear end cover of first, second dividing plate and housing successively from first expansion chamber after; Transition tube stretches in second expansion chamber after first expansion chamber is passed first, second dividing plate; The part that described suction tude, steam outlet pipe and transition tube are positioned at the resistance noise reduction chamber is provided with micropore on tube wall.The entrance point of the outlet end of described suction tude, the entrance point of steam outlet pipe and transition tube is the extension mouth structure.
Described extension mouth structure is horn mouth, oval expansion opening, triangle extension mouth, quadratic flare mouth or rectangle extension mouth.Extension mouth structure and each pipe are connected smoothly by rounding R.
Compared with prior art, the utlity model has following advantage:
1, establish the extension mouth structure at an end of suction tude, steam outlet pipe and transition tube, air-flow flows into or the outflow pipeline along this structure, the reduction that speed can be bigger.
2, the extension mouth structure is connected smoothly by rounding and its body, has guaranteed that exhaust airstream can wall not occur with pipeline and separate, and can reduce the exhaust airstream flow velocity.
After this acoustic wave filter structure can make exhaust airstream through level and smooth expansion, contraction and expansion, contraction, speed reduced greatly, and exhaust back pressure reduces, the power of motor, and moment of torsion is improved.
Description of drawings
Fig. 1 is the utility model automotive muffler structural representation
Among the figure, housing 1, first dividing plate 2, second partition 3, suction tude 4, suction tude inlet end 43, steam outlet pipe 5, air outlet entrance point 53, transition tube 6, transition tube entrance point 63, first expansion chamber 7, resistance noise reduction chamber 8, second expansion chamber 9, airflow direction 10, front cover 11, rear end cover 12, micropore 13, rounding R.
Embodiment
Below in conjunction with the drawings and specific embodiments the utility model is described in further detail:
Referring to Fig. 1, axially be vertically installed with first dividing plate 2 and second partition 3 in the housing 1 of the utility model automotive muffler, arrange the space, and housing 1 internal insulation is become first expansion chamber 7, resistance noise reduction chamber 8 and 9 three chambers of second expansion chamber.Suction tude 4, steam outlet pipe 5 and transition tube 6 and housing 1 parallel to an axis, and the space arranged is in housing.Suction tude 4 penetrates second expansion chamber 9 after by the outer front cover 11 that passes housing 1 successively of housing 1 and first dividing plate 2, second partition 3; Steam outlet pipe 5 passes housing 1 after first expansion chamber 7 is passed first dividing plate 2, second partition 3 and rear end cover 12 successively; Transition tube 6 penetrates in second expansion chamber 9 after first expansion chamber 7 is passed first dividing plate 2, second partition 3.Be distributed with micropore 13 at the position that is positioned at resistance noise reduction chamber 8 on three pipes.Be provided with the extension mouth structure at suction tude outlet end 43, be positioned at second expansion chamber 9.At steam outlet pipe entrance point 53 the extension mouth structure is arranged, be positioned at first expansion chamber 7.Also be provided with the extension mouth structure at transition tube entrance point 63, be positioned at second expansion chamber 9.Above-mentioned extension mouth structure all is connected smoothly by rounding R and each pipe, and the extension mouth structure is a horn mouth, perhaps triangle extension mouth or quadratic flare mouth or rectangle extension mouth.
In the utility model automotive muffler when work,, air-flow 10 enters suction tude 4 and shrinks, and after seamlessly transitting through that section in the rounding R of this suction tude 4 subsequently, obtains expansion through the suction tude outlet end 43 of suction tude 4; Then, entering second expansion chamber interior 9 expands, the transition tube entrance point 63 that enters transition tube 6 is again expanded, after entering transition tube 6 interior contractions then, pass transition tube 6 and be positioned at that end of first expansion chamber 7, entering first expansion chamber 7 expands, the steam outlet pipe entrance point 53 that enters steam outlet pipe 5 is again expanded once more, after seamlessly transitting through that section in the rounding R of this suction tude 5 subsequently, enter again in the steam outlet pipe 5 and shrink, by such expansion, shrink and expansion, shrink, the speed of air-flow 10 reduces greatly, and then makes exhaust back pressure reduce, and the power and the moment of torsion of motor are improved.
Claims (3)
1. automotive muffler, in the housing (1) of silencing apparatus, be provided with and axial vertical first, second dividing plate (2,3) of housing (1), arrange first, second dividing plate (2,3) space, and housing (1) inside is isolated into first, second expansion chamber (7,9) and (8) three chambers of resistance noise reduction chamber successively; Described suction tude (4), steam outlet pipe (5) and transition tube (6) space are arranged in the housing, and with housing (1) parallel to an axis; Described suction tude (4) stretches in second expansion chamber (9) after by the outer front cover (11) that passes housing (1) successively of housing (1), first, second dividing plate (2,3); Described steam outlet pipe (5) passes housing (1) pass the rear end cover (12) of first, second dividing plate (2,3) and housing (1) successively from first expansion chamber (7) after; Transition tube (6) stretches in second expansion chamber (9) after first expansion chamber (7) is passed first, second dividing plate (2,3); The part that described suction tude (4), steam outlet pipe (5) and transition tube (6) are positioned at resistance noise reduction chamber (8) is provided with micropore on tube wall; It is characterized in that: the transition tube entrance point (63) of the suction tude outlet end (43) of described suction tude (4), the steam outlet pipe entrance point (53) of steam outlet pipe (5) and transition tube (6) is the extension mouth structure.
2. automotive muffler according to claim 1 is characterized in that: described extension mouth structure is horn mouth, oval expansion opening, triangle extension mouth, quadratic flare mouth or rectangle extension mouth.
3. automotive muffler according to claim 2 is characterized in that: described extension mouth structure and each pipe are connected smoothly by rounding R.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202065700U CN201507339U (en) | 2009-09-30 | 2009-09-30 | Automobile muffler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202065700U CN201507339U (en) | 2009-09-30 | 2009-09-30 | Automobile muffler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201507339U true CN201507339U (en) | 2010-06-16 |
Family
ID=42468467
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202065700U Expired - Fee Related CN201507339U (en) | 2009-09-30 | 2009-09-30 | Automobile muffler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201507339U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106098048A (en) * | 2016-06-23 | 2016-11-09 | 安徽美自然环境科技有限公司 | A kind of deafener |
| CN109356685A (en) * | 2018-12-10 | 2019-02-19 | 徐文君 | A kind of automobile exhaust system muffler |
-
2009
- 2009-09-30 CN CN2009202065700U patent/CN201507339U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106098048A (en) * | 2016-06-23 | 2016-11-09 | 安徽美自然环境科技有限公司 | A kind of deafener |
| CN109356685A (en) * | 2018-12-10 | 2019-02-19 | 徐文君 | A kind of automobile exhaust system muffler |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100616 Termination date: 20120930 |