CN2551772Y - Exhausting silencing system for air-cooled IC engine - Google Patents
Exhausting silencing system for air-cooled IC engine Download PDFInfo
- Publication number
- CN2551772Y CN2551772Y CN 02232163 CN02232163U CN2551772Y CN 2551772 Y CN2551772 Y CN 2551772Y CN 02232163 CN02232163 CN 02232163 CN 02232163 U CN02232163 U CN 02232163U CN 2551772 Y CN2551772 Y CN 2551772Y
- Authority
- CN
- China
- Prior art keywords
- air
- expansion chamber
- combustion engine
- internal
- cooled
- 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
Links
- 230000030279 gene silencing Effects 0.000 title 1
- 238000002485 combustion reaction Methods 0.000 claims abstract description 19
- 230000029058 respiratory gaseous exchange Effects 0.000 claims description 21
- 230000003584 silencer Effects 0.000 claims description 7
- 238000001816 cooling Methods 0.000 abstract description 10
- 239000007789 gas Substances 0.000 abstract description 2
- 238000005273 aeration Methods 0.000 abstract 4
- 230000002708 enhancing effect Effects 0.000 abstract 1
- 239000002912 waste gas Substances 0.000 description 9
- 238000000034 method Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 4
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000008030 elimination Effects 0.000 description 2
- 238000003379 elimination reaction Methods 0.000 description 2
- 230000003139 buffering effect Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 239000003517 fume Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 230000007096 poisonous effect Effects 0.000 description 1
- 230000002000 scavenging effect Effects 0.000 description 1
Landscapes
- Exhaust Silencers (AREA)
- Exhaust Gas After Treatment (AREA)
Abstract
The utility model relates to a wind-cooling air-exhausting and noise-eliminating system of an internal-combustion engine, consisting of a vent pipe connected with the air outlet of the internal-combustion engine through a flange and an anechoic chamber connected with a vent pipe. An expansion chamber connected with a plurality of miniature aeration pipes is arranged in the anechoic chamber. The utility model has the advantages that the wind-cooling miniature aeration pipes arranged with radiating fins reduce the high-temperature exhaust gases inside the miniature aeration pipes through external cooling airflow, compress the cooled air and finally lower the exhausting pressure by connecting with the adjacent expansion chamber through the wind-cooling miniature aeration pipes arranged with radiating fins, thereby enhancing the output power of the internal-combustion engine.
Description
Affiliated technical field
The utility model belongs to I. C. engine exhaust sound-attenuating system technical field.
Background technique
Well-knownly be, internal-combustion engine can produce the waste gas of a large amount of High Temperature High Pressure and exhaust sound up to 120 decibels when work, and the poisonous fume of this discharging and noise have also seriously influenced human ecotope in befouling environment.For this reason, engineers and technicians have installed an air exhaust muffler device at the relief opening of internal-combustion engine.This silencer comprises that one is connected to the outlet pipe of engine exhaust port by flange, and the anechoic chamber that links to each other with outlet pipe, and expansion chamber is arranged in the anechoic chamber, has little breathing pipe continuous between the expansion chamber.When the High Temperature High Pressure waste gas of internal-combustion engine through outlet pipe during to the anechoic chamber, the effect of expansion chamber makes air-flow obtain expanding and cooling, then through too small breathing pipe to next expansion chamber, make air-flow obtain once more expanding and cooling, discharge from the exhaust port of afterbody at last.Because the exhaust sound of internal-combustion engine is taken out of by this strand air-flow, air-flow obtains expanding in expansion chamber and cooling, thereby flow velocity has been slowed down, and finally reaches the noise elimination purpose.But, when internal-combustion engine when running up, little breathing pipe has little time exhaust in the anechoic chamber, make to have formed certain air pressure in the expansion chamber, the resistance of exhaust is increased, to the exhaust resistance of increase during greater than the pressure of residual gas in the cylinder, caused the backflow of part waste gas, thereby the waste gas in the cylinder of internal-combustion engine is increased, make burning insufficient, power output is greatly affected.One of method that addresses the aforementioned drawbacks is exactly the effective aperture that increases little breathing pipe in the anechoic chamber, and so obvious exhaust resistance has reduced, but the noise of exhaust has increased.Also having a kind of method is exactly that a blower fan that brute force is air-breathing has been installed on vent systems, to reduce the exhaust pressure in the outlet pipe.But it is all multifactor that this powerful vent systems will relate to motor, control system, manufacture cost, working life etc., and can't spread on all internal-combustion engines.Another scheme is set up turbo charge system exactly, and this system can increase the fresh air in the firing chamber in powerful scavenging, thereby power of IC engine is got a promotion.But the turbo charge system complex structure is installed trouble, maintenance difficult, and the user cost height can't adapt on general internal-combustion engine and use.Therefore, above-mentioned several solution still can not obviously change the technical bug that exists in the exhausting silencer system.
Summary of the invention
The purpose of this utility model just provides a kind of novel air-cooled engine exhausting silencer system.
The utility model comprises that one is connected to the outlet pipe of internal combustion engine air vent and an anechoic chamber linking to each other with outlet pipe by flange, and expansion chamber is arranged in the anechoic chamber, is communicated by the little breathing pipe that exposes between the expansion chamber, and little breathing pipe links to each other with a metal fin.So just make the high-temp waste gas of internal-combustion engine through too small breathing pipe the time, can be subjected to the influence of extraneous cooling blast, thereby reduce the temperature of waste gas effectively, make it be subjected to cold compression, finally reach the noise elimination purpose.
The utility model is owing to designed air-cooled little breathing pipe, thereby improved the freezing capacity of exhausting silencer system, reduced delivery temperature, the exhaust pressure of internal-combustion engine is reduced, thereby power output is got a promotion, solve existing sound-attenuating system and under the prerequisite that does not influence power output, increased exhaust sound, under the prerequisite that does not improve exhaust sound, influenced the defective of power output again.Can be widely used on the various internal combustion engines, and will produce positive society and economy benefit.
Description of drawings
Fig. 1 is a side view cutaway drawing of the present utility model
Fig. 2 is a cross-section cutaway view of the present utility model.
Embodiment
Describe concrete device and the implementation detail that the utility model proposes in detail below in conjunction with above-mentioned accompanying drawing.The utility model comprises that one is connected to the outlet pipe (1) of internal combustion engine air vent and the anechoic chamber (4) that links to each other with outlet pipe (1) by flange, design has several expansion chambers (2) (11) (10) (9) in the anechoic chamber (4), linked to each other by little breathing pipe (3) (5) (7) between the expansion chamber (2) (11) (10) (9), the afterbody design has a little outlet pipe (6).Can see that on scheming outlet pipe (1) links to each other with expansion chamber (11), expansion chamber (11) links to each other with next expansion chamber (9) by air-cooled little breathing pipe (5).Above-mentioned expansion chamber (9) links to each other with next expansion chamber (2) by built-in little breathing pipe (7) again.Above-mentioned expansion chamber (2) links to each other with another expansion chamber (10) by air-cooled little breathing pipe (3) again, and expansion chamber (10) communicates with an outlet pipe (6).In order to increase the cooling effect of little outlet pipe (3) (5), designed radiating fin (8) on the little outlet pipe (3) (5).When the high-temp waste gas of internal-combustion engine through outlet pipe (1) during to expansion chamber (11), the effect of expansion chamber (11) makes air-flow obtain cooling and buffering, then from little breathing pipe (5) to next expansion chamber (9), after repeating said process, pass through not only built-in little breathing pipe (7) to next expansion chamber (2) but also repeat above-mentioned inflation process.Pass through air-cooled little breathing pipe (3) then again again to a last expansion chamber (10), another repeats above-mentioned inflation process, discharges in little outlet pipe (6) at last.From above exhaust flow path, can see, twice air-cooled little breathing pipe (5) (3) of process of high-temp waste gas, the temperature interior than anechoic chamber (4) owing to extraneous temperature is low, add the effect of radiating fin (8) again, so just reduced the temperature of high-temp waste gas when too small breathing pipe (5) (3) effectively, thereby made hot air be subjected to cold compression, exhaust pressure is descended, improved the efficient of exhaust, made the power output of internal-combustion engine not be subjected to the influence of the resistance of exhaust.
Claims (2)
1, air-cooled engine exhausting silencer system, this system comprises that one is connected to the outlet pipe of internal combustion engine air vent and the anechoic chamber that links to each other with outlet pipe by flange, the expansion chamber that has several to link to each other in the anechoic chamber by little breathing pipe, it is characterized in that: have air-cooled little breathing pipe (5), (3) to link to each other between expansion chamber (11), (9), (2), (10), radiating fin (8) is installed on little breathing pipe (5), (3).
2, air-cooled engine exhausting silencer system according to claim 1 is characterized in that: the rarest little breathing pipe (5), (3) more than 1 between each expansion chamber (11) that links to each other, (9) and (2), (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02232163 CN2551772Y (en) | 2002-04-09 | 2002-04-09 | Exhausting silencing system for air-cooled IC engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02232163 CN2551772Y (en) | 2002-04-09 | 2002-04-09 | Exhausting silencing system for air-cooled IC engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2551772Y true CN2551772Y (en) | 2003-05-21 |
Family
ID=33707662
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02232163 Expired - Fee Related CN2551772Y (en) | 2002-04-09 | 2002-04-09 | Exhausting silencing system for air-cooled IC engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2551772Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120210704A1 (en) * | 2009-09-14 | 2012-08-23 | Honda Motor Co., Ltd. | Exhaust muffler for general-purpose engine |
-
2002
- 2002-04-09 CN CN 02232163 patent/CN2551772Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120210704A1 (en) * | 2009-09-14 | 2012-08-23 | Honda Motor Co., Ltd. | Exhaust muffler for general-purpose engine |
| EP2479390A4 (en) * | 2009-09-14 | 2014-06-04 | Honda Motor Co Ltd | Exhaust muffler for multipurpose engine |
| US8844276B2 (en) * | 2009-09-14 | 2014-09-30 | Honda Motor Co., Ltd. | Exhaust muffler for general-purpose engine |
| CN102482966B (en) * | 2009-09-14 | 2015-06-17 | 本田技研工业株式会社 | Exhaust muffler for multipurpose engine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |