CN221002900U - Single-cylinder pedal engine muffler - Google Patents
Single-cylinder pedal engine muffler Download PDFInfo
- Publication number
- CN221002900U CN221002900U CN202322925738.6U CN202322925738U CN221002900U CN 221002900 U CN221002900 U CN 221002900U CN 202322925738 U CN202322925738 U CN 202322925738U CN 221002900 U CN221002900 U CN 221002900U
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- CN
- China
- Prior art keywords
- cylinder
- cylinder body
- muffler
- silencing
- catalytic
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Links
- 230000007704 transition Effects 0.000 claims abstract description 10
- 230000030279 gene silencing Effects 0.000 claims description 26
- 230000003197 catalytic effect Effects 0.000 claims description 20
- 239000003054 catalyst Substances 0.000 claims description 15
- 230000003584 silencer Effects 0.000 claims description 3
- 238000005192 partition Methods 0.000 description 9
- 239000002912 waste gas Substances 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 238000013461 design Methods 0.000 description 4
- MWUXSHHQAYIFBG-UHFFFAOYSA-N Nitric oxide Chemical compound O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000001743 silencing effect Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 238000012827 research and development Methods 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- 229920000742 Cotton Polymers 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 229910002091 carbon monoxide Inorganic materials 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000011651 chromium Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
Landscapes
- Exhaust Silencers (AREA)
Abstract
The utility model discloses a single-cylinder pedal engine muffler, which comprises a muffler cylinder body, wherein an air inlet and an air outlet are respectively arranged at two ends of the muffler cylinder body, a baffle is arranged in the muffler cylinder body, the baffle separates the muffler cylinder body into a plurality of chambers, a transition pipe for communicating two adjacent chambers is arranged on the baffle, a cavity is arranged between the inner wall and the outer surface of the cylinder body of the muffler cylinder body along the length direction, and the inner wall of the cylinder body is provided with meshes.
Description
Technical Field
The utility model relates to an engine muffler, in particular to a single-cylinder pedal engine muffler.
Background
A single cylinder engine is the simplest of all engines, with only one cylinder, which is the basic form of the engine. In order to reduce noise generated when the automobile engine is in operation, the cylinder is also usually connected with a muffler. At present, more and more vehicle types are carried on the market for various pedal engine power, and the exhaust muffler capable of meeting the power performance and noise requirements simultaneously is designed to consume a large amount of resources and a long period.
Chinese patent document CN110107541a discloses a post-pressure muffler and a supercharged engine, wherein the post-pressure muffler includes an outer cavity and an inner cavity disposed in the outer cavity; the outer wall surface of the inner cavity is connected with the inner wall surface of the outer cavity through a plurality of partition plates, and the space between the outer cavity and the inner cavity is divided into a plurality of silencing chambers by the plurality of partition plates; the inner cavity is provided with perforations, and the plurality of silencing chambers have more than two perforation rates. According to the post-pressing muffler and the supercharged engine, due to the fact that the plurality of silencing chambers are different in structure size and perforation area, different perforation rates are formed, and noise in different frequency bands can be eliminated. The large resonant cavity of the inner cavity and the small resonant cavities formed by the silencing cavity are connected in parallel, so that the silencing frequency band is increased, and the silencing effect is better. In this prior art, the noise reduction effect is improved by means of a plurality of resonant cavities, but the structure of the muffler is more complicated, and the manufacturing cost is increased.
Disclosure of utility model
The utility model provides a single-cylinder pedal engine muffler for solving the technical problem of complex structure of a muffler in the prior art, which comprises a muffler cylinder body, wherein an air inlet and an air outlet are respectively arranged at two ends of the muffler cylinder body, a partition plate is arranged in the muffler cylinder body, the muffler cylinder body is divided into a plurality of chambers by the partition plate, a transition pipe for communicating two adjacent chambers is arranged on the partition plate, a cavity is arranged between the inner wall and the outer surface of the cylinder body of the muffler cylinder body along the length direction, and meshes are arranged on the inner wall of the cylinder body.
In this scheme, utilize the cooperation of cavity and mesh, the waste gas that enters into in the cavity can also enter into the cavity through the mesh and carry out amortization, can increase the amortization effect, compare with prior art, simple structure can reduce the manufacturing cost of silencer.
Preferably, the cavity is filled with a sound attenuating element. In this scheme, setting up of amortization piece in the cavity can further strengthen the amortization effect.
Preferably, the volume of the chambers in the sound damping cylinder decreases in sequence. In this scheme, the design mode that cavity volume reduces in proper order can make exhaust pressure strengthen step by step, and the noise elimination effect is better, and performance loss reduces.
Preferably, the air inlet of the silencing cylinder body is connected with an exhaust pipe, and a catalyst is arranged in the exhaust pipe. In this scheme, the setting of catalyst can purify exhaust waste gas in the blast pipe, avoids the pollution to the air.
Preferably, the exhaust end of the exhaust pipe is connected with a catalytic cylinder, the catalyst is filled in the catalytic cylinder, and the exhaust end of the catalytic cylinder is connected with the air inlet of the silencing cylinder. In this scheme, the setting of catalytic tube makes things convenient for the change of catalyst, simple structure.
Preferably, the diameter of the two ends of the catalytic cylinder is smaller than that of the middle part of the catalytic cylinder, and the catalyst is filled in the middle part. In this scheme, the design of catalytic cylinder both ends diameter and middle part diameter makes barrel both ends form the exhaust buffering space, all has stable advantage to emission and performance.
Preferably, the air outlet is connected with a tail pipe, and the diameter of the tail pipe is smaller than that of the transition pipe. In this scheme, the tail pipe is less than the design of transition pipe diameter and can guarantee that the exhaust air current discharges the silencer smoothly, simple structure.
The utility model has the following beneficial effects:
1. The muffler provided by the utility model has the advantages that the silencing effect is enhanced by adopting the silencing cylinder body with the meshes and the silencing piece, the structure is simple, and the manufacturing cost can be reduced;
2. The plurality of chambers arranged in the silencing barrel can effectively inhibit and reduce exhaust noise and control performance loss within a limited range, and the gradual reduction of the volume of the chambers can also ensure that the exhaust pressure is gradually increased, so that the silencing effect is better and the performance loss is smaller;
3. through unified planning design, the single-cylinder pedal engine muffler can simultaneously meet the requirements of single-cylinder pedal engine performance and noise at the rotating speed of 10000r/min and below on the premise of simultaneously meeting the requirements of power performance, noise and emission, realizes accurate and rapid research and development of the pedal engine muffler, shortens the research and development period of products and shortens the marketing period of a power terminal.
Drawings
FIG. 1 is a schematic view of an embodiment of a single cylinder pedal engine muffler of the present utility model.
Detailed Description
The following is a further detailed description of the embodiments:
Reference numerals in the drawings of the specification include: the exhaust pipe device comprises a connecting sleeve 1, an exhaust pipe 2, a catalytic cylinder 3, a catalyst 4, a silencing cylinder body 5, a silencing piece 6, a partition plate 7, a transition pipe 8 and a tail pipe 9.
An example is substantially as shown in figure 1: the single-cylinder pedal engine muffler comprises a muffler cylinder body 5, wherein an air inlet and an air outlet are respectively formed in two ends of the muffler cylinder body 5, a partition 7 is arranged in the muffler cylinder body 5, the partition 7 separates the muffler cylinder body 5 into a plurality of chambers, two partition 7 are arranged in the muffler cylinder body 5 in the embodiment, and three chambers are separated in the muffler cylinder body 5. The three chambers decrease in sequence along the flow direction of the exhaust gas, and the volume ratio of the three chambers in this embodiment is 4:3.5:2.5.
The baffle 7 is provided with a transition pipe 8 communicated with two adjacent chambers, and the two transition pipes 8 are arranged in the silencing cylinder 5 in a highly staggered manner.
A cavity is arranged between the inner wall and the outer surface of the cylinder body of the silencing cylinder body 5 along the length direction, a silencing piece 6 is filled in the cavity, and meshes are arranged on the inner wall of the cylinder body. In this embodiment, the silencing member 6 is made of silencing cotton.
An air inlet of the silencing cylinder body 5 is connected with an exhaust pipe 2, and one end of the exhaust pipe 2 is provided with a connecting sleeve 1. The air outlet is connected with a tail pipe 9, and the diameter of the tail pipe 9 is smaller than that of the transition pipe 8. The exhaust pipe 2 is internally provided with a catalyst 4, specifically, the exhaust end of the exhaust pipe 2 is connected with a catalytic cylinder 3, the catalyst 4 is filled in the catalytic cylinder 3, and the exhaust end of the catalytic cylinder 3 is connected with the air inlet of the silencing cylinder 5. The diameter of the two ends of the catalytic cylinder 3 is smaller than that of the middle part of the catalytic cylinder 3, and the catalyst 4 is filled in the middle part. When the engine is insufficiently combusted, carbon monoxide, nitrogen oxide, and the like are contained in the exhaust gas, so in order to meet the emission demand, in the present embodiment, the catalyst 4 is a heavy metal catalyst 4 such as chromium.
The specific implementation process is as follows: when in use, the connecting sleeve 1 of the exhaust pipe 2 is connected with an exhaust port of the engine. In operation, exhaust gas generated in the combustion process of the engine sequentially enters the exhaust pipe 2, the catalytic cylinder 3 and the silencing cylinder 5 and is discharged from the tail pipe 9. When the waste gas passes through the catalytic cylinder 3, the catalyst 4 purifies the waste gas, and the waste gas is ensured to meet the emission requirement. After entering the silencing cylinder 5, the waste gas sequentially passes through the three chambers, so that the exhaust noise can be effectively restrained and reduced, the noise requirement can be met, and the performance loss can be controlled within a limited range.
The foregoing is merely an embodiment of the present utility model, and a specific structure and characteristics of common knowledge in the art, which are well known in the scheme, are not described herein, so that a person of ordinary skill in the art knows all the prior art in the application date or before the priority date, can know all the prior art in the field, and has the capability of applying the conventional experimental means before the date, and a person of ordinary skill in the art can complete and implement the present embodiment in combination with his own capability in the light of the present utility model, and some typical known structures or known methods should not be an obstacle for a person of ordinary skill in the art to implement the present utility model. It should be noted that modifications and improvements can be made by those skilled in the art without departing from the structure of the present utility model, and these should also be considered as the scope of the present utility model, which does not affect the effect of the implementation of the present utility model and the utility of the patent. The protection scope of the present utility model is subject to the content of the claims, and the description of the specific embodiments and the like in the specification can be used for explaining the content of the claims.
Claims (7)
1. The utility model provides a single cylinder footboard engine silencer, includes the silence barrel, the both ends of silence barrel are equipped with air inlet and gas outlet respectively, be equipped with the baffle in the silence barrel, a plurality of cavities are separated out with the silence barrel to the baffle, be equipped with the transition pipe of two adjacent cavities of intercommunication on the baffle, its characterized in that: a cavity is arranged between the inner wall and the outer surface of the cylinder body of the silencing cylinder body along the length direction, and meshes are arranged on the inner wall of the cylinder body.
2. The single cylinder pedal engine muffler as defined in claim 1, wherein: and the cavity is filled with a silencing piece.
3. The single cylinder pedal engine muffler according to claim 1 or 2, characterized in that: the volume of the cavity in the silencing cylinder body is sequentially reduced.
4. A single cylinder pedal engine muffler as defined in claim 3, wherein: an air inlet of the silencing cylinder body is connected with an exhaust pipe, and a catalyst is arranged in the exhaust pipe.
5. The single cylinder pedal engine muffler as defined in claim 4, wherein: the exhaust end of the exhaust pipe is connected with a catalytic cylinder, the catalyst is filled in the catalytic cylinder, and the exhaust end of the catalytic cylinder is connected with an air inlet of the silencing cylinder body.
6. The single cylinder pedal engine muffler as defined in claim 5, wherein: the diameter of the two ends of the catalytic cylinder is smaller than that of the middle part of the catalytic cylinder, and the catalyst is filled in the middle part.
7. The single cylinder pedal engine muffler as defined in claim 6, wherein: the gas outlet is connected with a tail pipe, and the diameter of the tail pipe is smaller than that of the transition pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322925738.6U CN221002900U (en) | 2023-10-31 | 2023-10-31 | Single-cylinder pedal engine muffler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322925738.6U CN221002900U (en) | 2023-10-31 | 2023-10-31 | Single-cylinder pedal engine muffler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221002900U true CN221002900U (en) | 2024-05-24 |
Family
ID=91086960
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322925738.6U Active CN221002900U (en) | 2023-10-31 | 2023-10-31 | Single-cylinder pedal engine muffler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221002900U (en) |
-
2023
- 2023-10-31 CN CN202322925738.6U patent/CN221002900U/en active Active
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant |