CN87212803U - Safty and ecnomizing energy exhaust muffler for internal combustion engine - Google Patents
Safty and ecnomizing energy exhaust muffler for internal combustion engine Download PDFInfo
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- CN87212803U CN87212803U CN 87212803 CN87212803U CN87212803U CN 87212803 U CN87212803 U CN 87212803U CN 87212803 CN87212803 CN 87212803 CN 87212803 U CN87212803 U CN 87212803U CN 87212803 U CN87212803 U CN 87212803U
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- silencing apparatus
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- staving
- outlet pipe
- eddy flow
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Abstract
The utility model relates to a safety and economizing energy exhaust muffler for an internal combustion engine for automobiles, tractors, mechanic operating tricycles and motorcycles. The anterior part of an inner cavity is provided with a blast cover and a guide plate. A middle part is divided into a plurality of cavities by a swirling flow plate. A plurality of holes are distributed on a tailpipe. One fireproof casing is fixed outside. Fume has the advantages of smoothness, no impact, continuous equivalent, no spark and expelling in a rotary state in use. The purpose of safety, economizing energy and good sound-deadening effect is reached. Power loss is about 1% with full load and the noise of the whole vehicle is decreased by 76-80 decibels.
Description
The invention belongs to a kind of exhaust silencer for internal-combustion engine, particularly steam supply car, tractor, motor tricycle, motorcycle, internal combustion locomotive, internal-combustion engine boats and ships energy-saving safety silencer for exhaust.
Current, be used for the silencing apparatus on the various internal-combustion engines, general all according to the energy that consumes blast air, and the noise-cancelling theory of balance stream pressure fluctuation, so on the structural design of silencing apparatus, all adopt repeatedly to make air communication cross the section that dwindles and enlarge, repeatedly change the direction of air-flow, or air-flow is divided into very little tributary along rough apparent motion.Though this structure can reach the noise elimination effect, obstructed because of exhaust, cause back pressure to increase, when engine peak speed, the output power loss can reach 5%～10%, and the speed of a motor vehicle is higher, and exhaust resistance is bigger, power loss the more, the also corresponding increase of energy consumption influences the power of internal-combustion engine.For example China is used to liberate 4 tons of load-carrying lorries of car CA-10B type silencing apparatus, and its preceding tube section is long-pending about 30% greater than the outlet pipe sectional area, makes that the speed of discharging air-flow increases, impedance increases, and not only reduces the noise elimination effect but also increase oil consumption.The noise elimination that how to solve silencing apparatus is effective, and the power of IC engine loss is a technical barrier for a short time.U.S. Pat 4203503 and US4209076 have proposed a kind of exhaust and have been introduced into the resonance chamber that absorbs acoustic energy, enter the expansion chamber of noise elimination energy then, enter the exhaust silencer in the atmosphere at last.But the silencing apparatus of this structure be have that exhaust is obstructed, exclusion is big, noise elimination weak effect, shortcoming that the power of IC engine loss is big.Example again, Chinese patent 85102140 has proposed the reducing shunting, three constant exhaust silencers.Be not ideal aspect the fuel-economizing noise elimination, moreover structure is complicated again, cost is higher again.The various silencing apparatuss of more than enumerating and present other various silencing apparatuss all can not though add Flue isolation in addition, also still can not solve, and increase cost and exhaust resistance again because of the unsafe problem of exhaust band fire.
The objective of the invention is for automobile, tractor, motor tricycle, motorcycle, internal combustion locomotive, internal-combustion engine boats and ships etc. be equipped with a kind of safe, energy-conservation, noise is little, simple in structure, low back pressure eddy flow exhaust silencer.
The preceding capping 2 that I. C. engine exhaust energy-saving safe exhaust silencer provided by the present invention links to each other by air inlet tube 1, with air inlet tube, be located at before fluid dividing cover 3 in the capping, guide plate 4, rear seal-cover 7, be divided into not isometric(al) chamber eddy flow plate 6, the outlet pipe 8 that links to each other with rear seal-cover and be fixed on outlet pipe fireproof casing 9 outward by the staving 5 of front and back capping sealing, bowl inner chamber and formed.
In order to reduce resistance, the preceding capping 2 of silencing apparatus of the present invention, fluid dividing cover 3, eddy flow plate 6, rear seal-cover 7 all are frustroconical, cone angle is 15～150 °, and the lack of alignment degree of simultaneously preceding capping 2, fluid dividing cover 3, staving 5, eddy flow plate 6, rear seal-cover 7, outlet pipe 8, fireproof casing 9 is wanted＜20 °.
In order to reduce resistance, the change air-flow is swirling eddy, and it is long-pending to increase flow area, becomes to concentrate exhaust into disperseing exhaust.
Fluid dividing cover 3 cone bottom diameters are staving 5 diameters 1/2～3/4 in the silencing apparatus of the present invention; Guide plate 4 is helical buckling shape in the same way, and its width is a distance and vertical all and between two inclined-planes between 3 two conical surfaces of preceding capping 2 and fluid dividing cover; And eddy flow plate 6 external diameters equate with the internal diameter of staving 5, and are fixed on interval on the staving inwall; Be furnished with 3-10 flow-guiding mouth according to all size needs in the middle of each eddy flow plate, the flow-guiding mouth direction is consistent with silencing apparatus inner chamber air-flow sense of rotation, and total sectional area is greater than the suction port sectional area.
In order to increase working life, each parts of silencing apparatus of the present invention all are to be made by metallic material or other heat-resistant material.
The present invention has compared six with present other silencing apparatus and has changed advantages:
1. changed internal structure: promptly removed the core pipe and the porous barrier of silencing apparatus inner chamber, replaced with tapered eddy flow plate, resistance is little, and is simple in structure.
2. changed the shape of air-flow: the dispersion air-flow that promptly becomes the silencing apparatus inner chamber is focused airflow, and resistance is little.
3. changed the direction of air-flow: become repeatedly impact, 180 ° widely different commentaries on classics air-flow is swirling eddy, is to reduce pressure gradually, slow down, cushion.So impact, vibration, eddy current, resistance are all very little, air-flow can be discharged continuously equally.Inwall approaching under the effect of rotary centrifugal force because of the Mars in the flue gas again, the contact silencing apparatus slows down and prolongs time and flow process at inner chamber, so can disappear.
4. changed the sectional area of air-flow: make the sectional area that enters silencing apparatus inner chamber air-flow become big, rather than diminish.Make air-flow unobstructed, resistance, impact force are very little.
5. changed the structure of outlet pipe: promptly on outlet pipe, be provided with several apertures and a sleeve pipe, the remaining Mars of energy drag reduction, noise elimination and elimination.
6. the shape and the mode of exhaust airstream have been changed: promptly become and concentrate exhaust, become the exhaust of direct projection air-flow and be the swirling eddy exhaust, thereby reduced impact, vibration and resistance into disperseing exhaust.
Be positioned on and 4 tons of load-carryings of CA-10B h type engine h liberation car is housed uses this silencing apparatus and Chinese patent 85102140 silencing apparatus technical performance comparison sheets:
| The silencing apparatus title | Safety (fire prevention) | Loss of horsepower (%) | Noise (decibel) | Structure and technology | Install |
| Exhaust silencer for internal-combustion engine | Can not solve | ≈2％ | 80～83 | Complicated | Need not change original structure |
| Exhaust silencer for internal-combustion engine | Thoroughly solve | During ≈ 1% full load | 76～80 | Simply | Need not change original structure |
Silencing apparatus of the present invention can be widely used in automobile, tractor, motor tricycle, motorcycle, internal combustion locomotive, internal-combustion engine boats and ships etc.
Accompanying drawing:
Capping 3 fluid dividing covers 4 guide plates 5 stavings 6 eddy flow plates 7 rear seal-covers 8 outlet pipes 9 fireproof casings 10 flow-guiding mouths before 1 air inlet tube 2
Embodiment: is an embodiment with reference to accompanying drawing to join CA-10B4 ton load-carrying lorry silencing apparatus.
The staving 5 diameter 210mm of silencing apparatus, long 580mm; 4 guide plates 4 are arranged, wide 50mm, long 100mm on the fluid dividing cover 3; Vertex of a cone bending to the right from fluid dividing cover 3 is the spirality that pitch is 200mm; Totally 3 of eddy flow plates 6 are separately fixed on staving 5 inwalls, uniform 4 flow-guiding mouths on each eddy flow plate, and the longitudinal section is 24 * 50mm; Air inlet tube 1 length is 65mm for 60mm, diameter; Outlet pipe 8 diameters are 76mm, long 300mm, begin to be evenly equipped with 300 in φ 4mm hole from front to back on the tube wall at 50mm place; Fireproof casing 9 usefulness fixations are fixed on outlet pipe 8 outsides, and diameter is 90mm, long 500mm; Front head 2, fluid dividing cover 3, eddy flow plate 6, rear seal-cover 7 all are taper, cone angle is 90 °, awl end mounting distance is: preceding capping 2 is same plane with fluid dividing cover 3 bottoms, and and first block of eddy flow plate 240mm of being separated by, distance be 150mm between first and second, second and the 3rd block of eddy flow plate, the 3rd with rear seal-cover apart from being 40mm.Above part all uses the 0.75A3 steel plate to make, the staving of packing into after parts are carried out, and front and back capping and smoke-ejecting pipe weld promptly to be made.Use silencing apparatus of the present invention, the car load noise can drop to 76～80 decibels, in the time of at full capacity, horsepower loss ≈ 1%, not only be lower than the national regulation Motor Vehicle and allow noise standard 86 decibels (A) (GB1495-79), and be lower than the permission noise standard 83-81 of country decibels such as U.S., day, West Germany, also be lower than 80～83 decibels of China's patent 85102140 model muffler optimum datas.Simultaneously safe and reliable, smoke intensity and toxic emission index also make moderate progress.
Claims (10)
1, a kind of energy-saving safety silencer that is used for I. C. engine exhaust, its major technique be characterised in that its preceding capping 2 that links to each other by air inlet tube 1, with air inlet tube, be located at before fluid dividing cover 3 in the capping, guide plate 4, rear seal-cover 7, be divided into eddy flow plate 6, the outlet pipe 8 that links to each other with rear seal-cover of isometric(al) chamber not and be fixed on outlet pipe fireproof casing 9 outward by the staving 5 of front and back capping sealing, bowl inner chamber and formed.
2,, it is characterized in that described preceding capping 2, fluid dividing cover 3, eddy flow plate 6, rear seal-cover 7 are frustroconical, cone angle is 15～150 ° according to the described silencing apparatus of claim 1..
3,, it is characterized in that the lack of alignment degree of described preceding capping 2, fluid dividing cover 3, staving 5, eddy flow plate 6, rear seal-cover 7, outlet pipe 8, fireproof casing 9 is wanted＜20 ° according to the described silencing apparatus of claim 1..
4,, it is characterized in that described fluid dividing cover 3 cone bottom diameters are staving diameter 1/2-3/4 according to the described silencing apparatus of claim 1..
5, according to the described silencing apparatus of claim 1., it is characterized in that described guide plate 4 is helical buckling shape in the same way, its width is distance and vertical being distributed between two inclined-planes between 3 two conical surfaces of preceding capping 2 and fluid dividing cover.
6,, it is characterized in that the external diameter of described eddy flow plate 6 equates with the internal diameter of staving 7, and fixed interval is arranged on the staving inwall according to the described silencing apparatus of claim 1..
7, according to the described silencing apparatus of claim 1., it is characterized in that being furnished with 3-10 flow-guiding mouth in the middle of each eddy flow plate, the flow-guiding mouth direction is consistent with silencing apparatus inner chamber air-flow sense of rotation, and total sectional area is greater than the suction port sectional area.
8, according to the described silencing apparatus of claim 1., it is characterized in that described exhaust pipe range is 150～500mm, diameter is the 2/5-3/5 of staving 5, and from long not of uniform size, quantity, the indefinite hole of direction of being furnished with of front end 1/5, its hole total sectional area is identical with the air inlet tube area.
9, according to the described silencing apparatus of claim 1., it is characterized in that described fireproof casing 9 diameters than the big 10-120mm of outlet pipe diameter, length is 2-3 times.
10,, it is characterized in that described various part is that metal and other heat-resistant material are made according to the described silencing apparatus of claim 1..
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 87212803 CN87212803U (en) | 1987-11-23 | 1987-11-23 | Safty and ecnomizing energy exhaust muffler for internal combustion engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 87212803 CN87212803U (en) | 1987-11-23 | 1987-11-23 | Safty and ecnomizing energy exhaust muffler for internal combustion engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN87212803U true CN87212803U (en) | 1988-12-21 |
Family
ID=4827406
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 87212803 Pending CN87212803U (en) | 1987-11-23 | 1987-11-23 | Safty and ecnomizing energy exhaust muffler for internal combustion engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN87212803U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104153863A (en) * | 2014-06-24 | 2014-11-19 | 浙江亚特电器有限公司 | Catalytic agent silencer capable of lowering exhaust temperature |
| CN107023351A (en) * | 2017-05-19 | 2017-08-08 | 江苏大学 | Eliminate the device that DPF oil spouts regenerate flame |
| CN109139193A (en) * | 2018-08-01 | 2019-01-04 | 中国煤炭科工集团太原研究院有限公司 | A kind of dry-wet mixing conjunction the exhaust gas processing device of underground coal mine anti-explosion diesel engine |
| CN114148281A (en) * | 2021-12-24 | 2022-03-08 | 芜湖金安世腾汽车安全系统有限公司 | Silencing gas generator |
-
1987
- 1987-11-23 CN CN 87212803 patent/CN87212803U/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104153863A (en) * | 2014-06-24 | 2014-11-19 | 浙江亚特电器有限公司 | Catalytic agent silencer capable of lowering exhaust temperature |
| CN107023351A (en) * | 2017-05-19 | 2017-08-08 | 江苏大学 | Eliminate the device that DPF oil spouts regenerate flame |
| CN109139193A (en) * | 2018-08-01 | 2019-01-04 | 中国煤炭科工集团太原研究院有限公司 | A kind of dry-wet mixing conjunction the exhaust gas processing device of underground coal mine anti-explosion diesel engine |
| CN109139193B (en) * | 2018-08-01 | 2020-12-08 | 中国煤炭科工集团太原研究院有限公司 | Dry-wet mixed tail gas treatment device for coal mine underground explosion-proof diesel engine |
| CN114148281A (en) * | 2021-12-24 | 2022-03-08 | 芜湖金安世腾汽车安全系统有限公司 | Silencing gas generator |
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| C20 | Patent right or utility model deemed to be abandoned or is abandoned | ||
| WD01 | Invention patent application deemed withdrawn after publication |