CN201679539U - Low back pressure silencer - Google Patents
Low back pressure silencer Download PDFInfo
- Publication number
- CN201679539U CN201679539U CN2010201514495U CN201020151449U CN201679539U CN 201679539 U CN201679539 U CN 201679539U CN 2010201514495 U CN2010201514495 U CN 2010201514495U CN 201020151449 U CN201020151449 U CN 201020151449U CN 201679539 U CN201679539 U CN 201679539U
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- CN
- China
- Prior art keywords
- rear end
- partition plate
- dish
- pipe
- cylindrical shell
- 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 relates to a low back pressure silencer, which includes a front end cap, a barrel, a first partition plate, a second partition plate, an intake tube, an inner pipe, an exit pipe and a rear end cover, wherein the front end opening of the intake tube is provided in the front end cap, the rear end of the intake tube perforates the first partition plate and the second partition plate, the rear end opening of the intake tube is provided in the rear end cover; both ends of the barrel is in gas tightness connection with the front end cap and rear end cap, the first partition plate and the second partition plate are provided in the barrel perpendicular to the barrel axial direction, and the first partition plate and the second partition plate are in gas tightness connection with the barrel, the intake tube, the inner pipe and the exit pipe are provided along the axial direction of the barrel; an inner pipe front end opening is provided in the first partition plate, the rear end opening is provided in the second partition plate, another inner pipe front end opening is provided in the second partition plate, the rear end opening is provided in the rear end cover; several sound attenuation holes are provided on the pipe wall of the intake tube and the inner pipe. The utility model has simple structure, largely reduces the exhaust resistance of the entire finished automobile, decreases the air exhaust back pressure, further improves the engine power and reduces the oil consumption.
Description
Technical field
The utility model relates to a kind of vent systems of automobile, specifically belongs to a kind of low back pressure automobile exhaust muffler.
Background technique
During the motor car engine combustion gas, the pressure of waste gas changes rapidly at the exhaust pipe mouth place, produces vibration, and vibration produces noise.In the prior art, install silencing apparatus in the outlet pipe of motor car engine, silencing apparatus is used to consume flowed energy, reduces the pressure surge amplitude of air-flow, can play the effect that reduces noise.But in the silencing apparatus of existing motor car engine, it is big that air communication is crossed resistance, the exhaust back pressure height, and the engine power loss that causes is big, oil consumption increases, and the power performance of automobile is descended.
Summary of the invention
The utility model purpose is: a kind of low backpressure muffler is provided, and the resistance that makes air-flow be subjected in the process by silencing apparatus reduces, and exhaust back pressure reduces, thereby reduces the power loss of motor, reduces the oil consumption of motor.
The technical solution of the utility model is: a kind of low backpressure muffler, comprise a front cover, cylindrical shell, first every dish, second every dish, suction tude, interior pipe, steam outlet pipe and a rear end cover, the front opening of described suction tude is in front cover, the rear end of suction tude passes first every dish with second every dish, and the open rearward end of suction tude is in rear end cover.
The further technological scheme of the utility model is: a kind of low backpressure muffler, comprise a front cover, cylindrical shell, first every dish, second every dish, suction tude, interior pipe, steam outlet pipe and a rear end cover, the front opening of described suction tude is in front cover, the rear end of suction tude passes first every dish with second every dish, and the open rearward end of suction tude is in rear end cover; Being provided with tightness between the two ends of described cylindrical shell and described front cover and the rear end cover is connected, described first is arranged in the cylindrical shell perpendicular to the cylindrical shell axial direction every the rim every dish and second, first is provided with tightness and is connected every between dish and the cylindrical shell every dish and second, and described suction tude, interior pipe and steam outlet pipe are arranged in the cylindrical shell and are parallel to the axial of cylindrical shell.
The more detailed technological scheme of the utility model is: a kind of low backpressure muffler, comprise a front cover, cylindrical shell, first every dish, second every dish, suction tude, interior pipe, steam outlet pipe and a rear end cover, the front opening of described suction tude is in front cover, the rear end of suction tude passes first every dish with second every dish, and the open rearward end of suction tude is in rear end cover; Being provided with tightness between the two ends of described cylindrical shell and described front cover and the rear end cover is connected, described first is arranged in the cylindrical shell perpendicular to the cylindrical shell axial direction every the rim every dish and second, first is provided with tightness and is connected every between dish and the cylindrical shell every dish and second, and described suction tude, interior pipe and steam outlet pipe are arranged in the cylindrical shell and are parallel to the axial of cylindrical shell; Pipe is two in described, and the front opening of an interior pipe is in first in dish, and open rearward end is in second in dish, and the front opening of pipe is in second in dish in another, and open rearward end is in rear end cover; The tube wall of described suction tude and interior pipe is provided with some sound attenuation holes.
The utility model has the advantages that:
The utility model is simple in structure, has greatly reduced the exhaust resistance of car load, has reduced exhaust back pressure, has further improved the power of motor, has reduced oil consumption.For the silencing apparatus of single-stage expansion cavity configuration, straight-through perforated pipe of the present utility model is the most obvious to the influence of the drag losses of silencing apparatus, and its drag losses coefficient is is promptly imported and exported the ratio of total pressure head and import dynamic pressure, than the drag losses coefficient low 78% in simple expansion chamber.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further described:
Fig. 1 is a structural representation of the present utility model.
Wherein: 1 is front cover; 2 is cylindrical shell; 3 is first every dish; 4 is second every dish; 5 is suction tude; 6 is interior pipe; 7 is steam outlet pipe; 8 is rear end cover; 9 is sound attenuation hole.
Embodiment
Embodiment: a kind of low backpressure muffler, as shown in Figure 1, comprise that a front cover 1, cylindrical shell 2, first manage 6, steam outlet pipes 7 and a rear end cover 8 every dish 3, second in 4, suction tude of dish 5, two, the front opening of described suction tude 5 is in front cover 1, the rear end of suction tude 5 passes first every coiling 3 and second every dish 4, and the open rearward end of suction tude 5 is in rear end cover 8.
Being provided with tightness between the two ends of described cylindrical shell 2 and described front cover 1 and the rear end cover 8 is connected, described first every coiling 3 and second every coiling 4 along being arranged in the cylindrical shell 2 perpendicular to cylindrical shell 2 axial directions, first is provided with tightness and is connected every between dish 4 and the cylindrical shell 2 every dish 3 and second, and described suction tude 5, interior pipe 6 and steam outlet pipe 7 are axially disposed within the cylindrical shell 2 along cylindrical shell 2.In one pipe 6 first every dish 3 and second in the cavity of dish between 4, its front opening is in first in dish 3, open rearward end in second in dish 4; Pipe 6 is in second the cavity between dish 4 and ear end face 8 in another, and its front opening is in second in dish 4, and open rearward end is in rear end cover 8.The tube wall of described suction tude 5 and interior pipe 6 is provided with some sound attenuation holes 9.
The quantity of suction tude 5, interior pipe 6 and steam outlet pipe 7 can be adjusted according to actual needs in the utility model, with suction tude 5 lengthenings, most of gas expands without first chamber and directly enters second chamber or the 3rd chamber, thereby transfer the partial shape resistance in straight tube flowing friction resistance, thereby reduce the resistance of whole system.The utility model is simple in structure, has greatly reduced the exhaust resistance of car load, has reduced exhaust back pressure, has further improved the power of motor, has reduced oil consumption.For the silencing apparatus of single-stage expansion cavity configuration, straight-through perforated pipe is the most obvious to the drag losses influence of silencing apparatus, and its drag losses coefficient is is promptly imported and exported the ratio of total pressure head and import dynamic pressure, than the drag losses coefficient low 78% in simple expansion chamber.
Below only be concrete exemplary applications of the present utility model, protection domain of the present utility model is not constituted any limitation.In addition to the implementation, the utility model can also have other mode of execution.All employings are equal to the technological scheme of replacement or equivalent transformation formation, all drop within the utility model scope required for protection.
Claims (5)
1. low backpressure muffler, comprise that a front cover (1), a cylindrical shell (2), first are every coiling (3), second every dish (4), suction tude (5), interior pipe (6), steam outlet pipe (7) and a rear end cover (8), it is characterized in that: the front opening of described suction tude (5) is in front cover (1), the rear end of suction tude (5) passes first every coiling (3) and second every dish (4), and the open rearward end of suction tude (5) is in rear end cover (8).
2. low backpressure muffler according to claim 1, it is characterized in that: be provided with tightness between the two ends of described cylindrical shell (2) and described front cover (1) and the rear end cover (8) and be connected, described first every coiling (3) and second every coiling (4) along being arranged in the cylindrical shell (2) perpendicular to cylindrical shell (2) axial direction, first is provided with tightness every dish (3) and second between dish (4) and cylindrical shell (2) is connected, and it is interior and be parallel to the axial of cylindrical shell that described suction tude (5), interior pipe (6) and steam outlet pipe (7) are arranged on cylindrical shell (2).
3. low backpressure muffler according to claim 1 and 2, it is characterized in that: pipe (6) is two in described, in one the pipe (6) front opening in first every the dish (3) in, open rearward end in second every the dish (4) in, the front opening of pipe (6) is in second in dish (4) in another, and open rearward end is in rear end cover (8).
4. low backpressure muffler according to claim 1 and 2 is characterized in that: the tube wall of described suction tude (5) and interior pipe (6) is provided with some sound attenuation holes (9).
5. low backpressure muffler according to claim 3 is characterized in that: the tube wall of described suction tude (5) and interior pipe (6) is provided with some sound attenuation holes (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201514495U CN201679539U (en) | 2010-03-30 | 2010-03-30 | Low back pressure silencer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201514495U CN201679539U (en) | 2010-03-30 | 2010-03-30 | Low back pressure silencer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201679539U true CN201679539U (en) | 2010-12-22 |
Family
ID=43344587
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201514495U Expired - Lifetime CN201679539U (en) | 2010-03-30 | 2010-03-30 | Low back pressure silencer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201679539U (en) |
-
2010
- 2010-03-30 CN CN2010201514495U patent/CN201679539U/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20101222 |