CN208106527U - A kind of gasoline engine exhaust silencer being made of antipriming pipe - Google Patents
A kind of gasoline engine exhaust silencer being made of antipriming pipe Download PDFInfo
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- CN208106527U CN208106527U CN201820424671.4U CN201820424671U CN208106527U CN 208106527 U CN208106527 U CN 208106527U CN 201820424671 U CN201820424671 U CN 201820424671U CN 208106527 U CN208106527 U CN 208106527U
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- antipriming pipe
- pipe
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- antipriming
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Abstract
The utility model provides a kind of gasoline engine exhaust silencer being made of antipriming pipe, including sequentially connected drive end bearing bracket, outer barrel, tail-hood and tail pipe；It further include being set to the intracorporal sound attenuation assembly of outer cylinder；Sound attenuation assembly includes that the first antipriming pipe, the second antipriming pipe and glass fibre support antipriming pipe；The tube wall of first antipriming pipe is provided with several the first sound attenuation holes, and the first antipriming pipe is built in inside the second antipriming pipe；The tube wall of second antipriming pipe is provided with several the second sound attenuation holes；The tube wall of glass fibre support antipriming pipe is provided with several the first sound-absorbing hole, and glass layer is provided between outer barrel；Tail-hood is internally provided with glass layer, and tail-hood is provided with several the second sound-absorbing hole towards the end face inside outer barrel.Not only noise elimination effect is good and acoustic attenuation performance is good for the utility model, to reduce the noise pollution as caused by the operation of petrol engine；And may make the maximum power of petrol engine big, F-Zero is high and power loss is small.
Description
Technical field
The utility model relates to a kind of mechanical sound insulating devices, more specifically to a kind of gasoline being made of antipriming pipe
Engine exhaust muffler.
Background technique
When exhaust gas is discharged in automobile engine, the pressure of exhaust gas changes rapidly at exhaust pipe mouth, generates vibration, and vibration generates
Noise.In the prior art, the device silencer in the exhaust pipe of automobile engine, silencer reduce for consuming flowed energy
The pressure fluctuations amplitude of air-flow can play the role of reducing noise.Silencer is the device for cutting down pneumatic noise, is installed in
In pipeline or on inlet and outlet mouth, there is certain consumption to noise while air-flow passes through, performance mainly includes three
A aspect：
One, acoustic attenuation performance, size and spectral characteristic including sound deadening capacity；
Two, aerodynamic quality is usually indicated with the total pressure difference of silencer entrance and exit；
Three, structural behaviour refers to its outer dimension, firmness degree, maintenance requirement, service life etc..
The performance in terms of the above three of silencer is evaluated, not only interknited but also conditioned each other, from the sound damping quality of silencer
It can consider, the sound deadening capacity in required frequency range is the bigger the better；But the requirement of aerodynamic quality must be taken into consideration simultaneously.
In the silencer of existing automobile engine, it is respectively provided with noise elimination cavity body structure, when work, what is be discharged from cylinder head is useless
The gas air inlet through silencer first enters in shell, is then discharged again from escape pipe after the noise elimination of noise elimination cavity.However, existing
Although some silencers have certain noise elimination effect, be provided with noise elimination cavity body structure noise elimination effect it is unobvious with pay no attention to
Think；And obstructed by the air-flow of noise elimination cavity so that maximum power is small, F-Zero is low and power loss is big.Together
When, also have the shortcomings that the gasoline combustion of engine when low speed is insufficient, largely effects on the output performance of engine in this way and make
Use the service life.
Utility model content
The purpose of the utility model is to overcome shortcoming and deficiency in the prior art, it is simple and eliminate the noise to provide a kind of structure
The good gasoline engine exhaust silencer being made of antipriming pipe of effect；Not only noise elimination effect is good and acoustic attenuation performance for the silencer
It is good, to reduce the noise pollution as caused by the operation of petrol engine；And may make the maximum power of petrol engine big,
F-Zero is high and power loss is small.
In order to achieve the above object, the utility model is achieved by following technical proposals：One kind is made of antipriming pipe
Gasoline engine exhaust silencer, it is characterised in that：Including sequentially connected drive end bearing bracket, outer barrel, tail-hood and tail pipe；Also wrap
It includes and is set to the intracorporal sound attenuation assembly of outer cylinder；The sound attenuation assembly includes the first antipriming pipe, the second antipriming pipe and glass fibre branch
Support antipriming pipe；
The tube wall of first antipriming pipe is provided with several the first sound attenuation holes, and the first antipriming pipe is built in the second antipriming pipe
Inside, one end is stretched out from drive end bearing bracket is used as air inlet, and the other end is provided with blanking cover and forms cecum；The pipe of second antipriming pipe
Wall is provided with several the second sound attenuation holes, and the second antipriming pipe is built in inside glass fibre support antipriming pipe, one end and front end
Lid connection；
Glass fibre support antipriming pipe one end is connect with drive end bearing bracket, and the other end is connect with tail-hood；The glass fibre
The tube wall of support antipriming pipe is provided with several the first sound-absorbing hole, and glass layer is provided between outer barrel；The tail
Lid is internally provided with glass layer, and tail-hood is provided with several the second sound-absorbing hole towards the end face inside outer barrel.
In the above scheme, the silencer of the utility model is disappeared without noise elimination cavity by first on the first antipriming pipe of setting
The second sound attenuation hole in acoustic aperture and the second antipriming pipe achievees the purpose that noise elimination, it can allows air-flow by but making acoustic wave segment mistake
It does not go, to achieve the effect that noise reduction.
The noise-cancelling theory is such：The exhaust gas being discharged from petrol engine enters the first antipriming pipe from air inlet first
Interior, the sound wave a part come from petrol engine outflow is eliminated the noise by the first sound attenuation hole enters the first antipriming pipe and the second antipriming pipe
Between gap, it is remaining to be stayed in inside the first antipriming pipe by the sound wave of the first sound attenuation hole of this silencer, by repeatedly anti-
It penetrates and sound energy consumption.
Into the part sound wave in the gap between the first antipriming pipe and the second antipriming pipe, only some can pass through this
Second sound attenuation hole of silencer, acoustic wave segment can not by second sound attenuation hole of this silencer, can only stay in the first antipriming pipe with
Gap multiple reflections sound energy consumption between second antipriming pipe.
The later sound wave of second sound attenuation hole of this silencer is passed through, a part directly passes through first sound absorption of this silencer
Hole enter glass fibre support antipriming pipe and outer barrel between glass layer, this acoustic wave segment inside glass layer with
It rubs between glass layer, sound energy consumption.A part of sound wave enters this silencer tail by second sound-absorbing hole of this silencer
The glass layer of lid, this acoustic wave segment occur friction with the glass layer of tail-hood inside the glass layer of tail-hood and disappear
Consumption sound energy.Final a part of sound wave enters free surrounding space by the tail pipe of this silencer.Therefore, it is finally discharged from muffler tail pipe
Sound wave be sound wave small part that petrol engine outflow comes, effectively sound energy consumption or shield part in this way
The propagation of sound wave finally makes sound become soft steady, and realizing reduces the dirt of the noise as caused by the operation of petrol engine
Dye.
In addition, entering in the first antipriming pipe from air inlet first from the exhaust gas that petrol engine is discharged, then pass through first
The first sound attenuation hole on antipriming pipe enters the gap between the first antipriming pipe and the second antipriming pipe, then by the second antipriming pipe
The second sound attenuation hole enter the second antipriming pipe and glass fibre support antipriming pipe (hereinafter referred to as glass fibre support antipriming pipe) it
Between gap, then air-flow all flows to tail pipe, flows to free surrounding space by tail pipe.The first antipriming pipe of the utility model is for air-flow
The circulation area of circulation is the sum of all first noise elimination hole areas, and the second antipriming pipe is then all for the circulation area of airflow
The sum of second noise elimination hole area, therefore, the tube wall of first antipriming pipe of the utility model are provided with several the first sound attenuation holes, the
The tube wall of two antipriming pipes is provided with several the second sound attenuation holes, since pipe diameter and length of tube can then may be used according to requiring to design
Realize the purpose for greatly increasing the circulation area of air-flow, and the first antipriming pipe is built in inside the second antipriming pipe, then is contracted significantly
It loses heart the circulation path of stream, so the silencer by the utility model can make airflow smooth pass through, and air-flow is unimpeded, makes
Obtaining petrol engine has the advantages performances such as maximum power is big, F-Zero is high and power loss is small, to improve gasoline hair
The working performance of motivation.
Refer to specifically, the other end of the first antipriming pipe is provided with blanking cover formation cecum：It further include for focused airflow
With the closing in pipe of the first antipriming pipe of support；Closing in pipe one end is connect with the first antipriming pipe, and the other end connect to be formed with blanking cover
Cecum.The design of the utility model blanking cover is greatly improved noise elimination effect, and the airflow portion specially entered from air inlet is direct
It is mutually liquidated by the first antipriming pipe to blanking cover and at blanking cover, continuous air pulse forms relatively high in the cecum of blanking cover
Air pressure, air-flow is at blanking cover by between air-flow molecule, between air-flow molecule and blanking cover and between air-flow molecule and tube wall
Perfectly elastic impact, the molecular motion after finally making collision become disorderly and unsystematic from directional, no longer have flow direction, less
Bunchy again becomes no impact force, so that the metallic sound that bundles of air-flow hits metal and generates will not be generated, i.e., will not generate again
Raw noise and noise pollution.
The closing in pipe is gradually narrowed along the export direction of air-flow；The big one end of the closing in pipe caliber and the first antipriming pipe
Connection, the small one end of caliber is provided with blanking cover.
The utility model further include for by the first antipriming pipe support be fixed on the antipriming pipe of the second antipriming pipe inner tubal wall before
Supporting element；The antipriming pipe front supporting member includes ontology one and support portion one interconnected, and the ontology one is set in first
Porous pipe outer wall, support portion one offset with the second porous inside pipe wall.The installation of the first antipriming pipe can be improved in the antipriming pipe front supporting member
In the stability of the second antipriming pipe.
The support portion one is the concave circular arcs part connected along one edge of ontology；The concave surface of concave circular arcs part is towards tail pipe.
Antipriming pipe front supporting member and the first antipriming pipe tail end, the second antipriming pipe tail end welds together, therefore structure can be improved in the design
Stability.
The utility model further includes more for the first antipriming pipe and the support of the second antipriming pipe to be fixed on glass fibre support
The antipriming pipe rear support of hole pipe inner tubal wall；The antipriming pipe rear support includes ontology two and support portion two interconnected,
The ontology two is set in the port outer wall that closing in pipe is provided with blanking cover, and support portion two supports porous inside pipe wall phase with glass fibre
It supports.The antipriming pipe rear support supports porous inside pipe wall to weld together with closing in pipe tail end outer wall and glass fibre, this is more
The first antipriming pipe can be improved in hole pipe rear support and the second antipriming pipe is mounted on the stability of glass fibre support antipriming pipe.
The support portion two is several " L " the font supporting elements connecting with two edge of ontology；" L " font supporting element erects
Straight part is connect with ontology two, and lateral part supports porous inside pipe wall to offset with glass fibre.The utility model uses " L " font
Supporting element supports porous inside pipe wall to offset with glass fibre, plays the fixed effect of support.
The diameter of first sound attenuation hole is 3mm≤d1≤4mm；The hole center of two neighboring first sound attenuation hole away from for L1 >=
3d1；
The diameter of second sound attenuation hole is 3mm≤d2≤4mm；The hole center of two neighboring second sound attenuation hole away from for L2 >=
3d2。
Minimum 3 millimeters of the diameter of first sound attenuation hole and the second sound attenuation hole so that the silencer of this no noise elimination cavity have with
Lower feature：Engine speed be 4000 revs/min to 6000 revs/min when torque be better than other any silencers, i.e., so that
Gasoline combustion is abundant when low speed, and low speed torque is good, and the gasoline combustion of petrol engine is abundant when such low speed, to improve gasoline
The output performance of engine and prolong the service life.
The first sound absorption bore dia is 3mm≤D1≤5mm；The second sound absorption bore dia is 3mm≤D2≤5mm.
The drive end bearing bracket is welded to form by Inner Front End lid and outer drive end bearing bracket, and Inner Front End lid is connect with the second antipriming pipe；It is described
Drive end bearing bracket is internally provided with glass layer；
The tail-hood is welded to form by interior tail-hood and outer tail-hood, and interior tail-hood is connect with glass fibre support antipriming pipe, interior tail
Lid end face is provided with several the second sound-absorbing hole.
The working principle for the gasoline engine exhaust silencer that the utility model is made of antipriming pipe is such：
The sound wave come from petrol engine outflow passes through air inlet first and is passed to inside the first antipriming pipe, due to this silencer
The first diameter of silencing hole very little, the first diameter of silencing hole are 3mm≤d1≤4mm, therefore only some sound wave can pass through
First sound attenuation hole and enter the gap between the first antipriming pipe and the second antipriming pipe, and remaining sound wave cannot be by this silencer
The first sound attenuation hole, stay in inside the first antipriming pipe, the sound energy consumption by multiple reflections.
Into the part sound wave in the gap between the first antipriming pipe and the second antipriming pipe, only some can pass through this
Second sound attenuation hole of silencer, since the second diameter of silencing hole d2 of this silencer is less than or equal to the diameter of the first sound attenuation hole
D1, therefore, acoustic wave segment cannot pass through second sound attenuation hole of this silencer.Can only stay in the first antipriming pipe and the second antipriming pipe it
Between gap multiple reflections sound energy consumption.
The later sound wave of second sound attenuation hole of this silencer is passed through, a part directly passes through first sound absorption of this silencer
Hole (first sound absorption bore dia be 3mm≤D1≤5mm) enters glass layer, this acoustic wave segment is inside glass layer and glass
Glass fibrous layer friction, sound energy consumption.A part of sound wave enters the tail-hood of this silencer by second sound-absorbing hole of this silencer
Glass layer, this acoustic wave segment occur to rub and consumption sound inside the glass layer of tail-hood with the glass layer of tail-hood
Energy.A part of sound wave enters free surrounding space by the tail pipe of this silencer.
The utility model without noise elimination cavity gasoline engine exhaust silencer the characteristics of it is as follows：This silencer without noise elimination cavity,
Reach two purposes by the second sound attenuation hole on the first sound attenuation hole and the second antipriming pipe on the first antipriming pipe of setting
To allow air-flow by but acoustic wave segment being made to cannot get through, to achieve the effect that noise reduction.Due to the first sound attenuation hole and the second sound attenuation hole
Diameter it is smaller, minimum 3 millimeters of the diameter of the first sound attenuation hole and the second sound attenuation hole so that the silencer of this no noise elimination cavity has
Following characteristics：When engine speed is 4000 revs/min to 6000 revs/min, torque is better than other any silencers.It is i.e. low
Gasoline combustion is abundant when fast, and low speed torque is good.Simultaneously because this silencer air-flow is unobstructed, so that the maximum power of engine and most
High revolving speed is all better than other any silencers.This silencer is without noise elimination cavity, by the first antipriming pipe and the second antipriming pipe to sound wave
Shielding action can not blaze abroad so that most of sound wave is shielded in inside the first antipriming pipe or the second antipriming pipe.Part
Sound wave after having passed through the first sound attenuation hole and the second sound attenuation hole comes into full contact with glass layer again, into glass layer the inside
Sound wave rub with glass layer, sound can be converted into thermal energy.Wave absorption is abundant, is passed to the sound wave in the silencer external world
Few, noise elimination effect is good.
Compared with prior art, the utility model has the following advantages that and beneficial effect：
1, not only noise elimination effect is good and sound damping quality for the gasoline engine exhaust silencer that the utility model is made of antipriming pipe
Can be good, to reduce the noise pollution as caused by the operation of petrol engine；And it may make the maximum power of petrol engine
Greatly, F-Zero is high and power loss is small.
2, gasoline combustion is abundant when the gasoline engine exhaust silencer that the utility model is made of antipriming pipe makes low speed,
Low speed torque is good, to improve the output performance of petrol engine and prolong the service life.
Detailed description of the invention
Fig. 1 is the gasoline engine exhaust silencer inner section schematic diagram that the utility model is made of antipriming pipe；
Fig. 2 is that antipriming pipe front supporting member shows in gasoline engine exhaust silencer that the utility model is made of antipriming pipe
It is intended to；
Fig. 3 is that antipriming pipe front supporting member is bowed in gasoline engine exhaust silencer that the utility model is made of antipriming pipe
View；
Fig. 4 is that antipriming pipe rear support is shown in gasoline engine exhaust silencer that the utility model is made of antipriming pipe
It is intended to；
Fig. 5 is that antipriming pipe rear support is bowed in gasoline engine exhaust silencer that the utility model is made of antipriming pipe
View；
The schematic diagram of interior tail-hood in the gasoline engine exhaust silencer that Fig. 6, which is the utility model, to be made of antipriming pipe；
Wherein, 1 be outer barrel, 2 be tail pipe, 3 be the first antipriming pipe, 4 be the second antipriming pipe, 5 be glass fibre support it is more
Kong Guan, 6 be Inner Front End lid, 7 be outer drive end bearing bracket, 8 be interior tail-hood, 9 be outer tail-hood, 10 be the first sound attenuation hole, 11 be blanking cover, 12 be
Second sound attenuation hole, 13 be the first sound-absorbing hole, 14 be glass layer, 15 be the second sound-absorbing hole, 16 be close up pipe, 17 be antipriming pipe
Front supporting member, 17.1 be ontology one, 17.2 are that support portion one, 18 is antipriming pipe rear support, 18.1 be ontology two, 18.2 is branch
Support part two.
Specific embodiment
The utility model is described in further detail with specific embodiment with reference to the accompanying drawing.
Embodiment
As shown in Figures 1 to 6, a kind of gasoline engine exhaust silencer being made of antipriming pipe of the utility model is to include
Sequentially connected drive end bearing bracket, outer barrel 1, tail-hood and tail pipe 2；It further include the sound attenuation assembly being set in outer barrel 1, wherein disappear
Sound component includes that the first antipriming pipe 3, the second antipriming pipe 4 and glass fibre support antipriming pipe 5, and drive end bearing bracket is by Inner Front End lid 6 and outside
The lid of drive end bearing bracket 7 is combined into, and tail-hood is combined by interior tail-hood 8 and the lid of outer tail-hood 9.
Specifically, the tube wall of first antipriming pipe 3 of the present embodiment is provided with 216 the first sound attenuation holes 10, and first disappears
The diameter d1 of acoustic aperture 10 is 3.5mm, and the hole center of two neighboring first sound attenuation hole 10 is 14.92mm away from L1, in the first antipriming pipe 3
It is placed in inside the second antipriming pipe 4, one end is stretched out from drive end bearing bracket is used as air inlet, and the other end is provided with blanking cover 11 and forms cecum.
And the tube wall of the second antipriming pipe 4 is provided with 403 the second sound attenuation holes 12, and the diameter d2 of the second sound attenuation hole 12 is 3mm, adjacent two
The hole center of a second sound attenuation hole 12 is 13mm away from L2, and the second antipriming pipe 4 is built in inside glass fibre support antipriming pipe 5,
The connection of the Inner Front End lid 6 of one end and drive end bearing bracket.
Glass fibre supports the Inner Front End lid 6 of 5 one end of antipriming pipe and drive end bearing bracket to connect, the interior tail-hood 8 of the other end and tail-hood
Connection, glass fibre support antipriming pipe 5 tube wall be provided with several bore dias D1 be 5mm the first sound-absorbing hole 13, and with it is outer
It is provided with glass layer 14 between cylinder 1, tail-hood is internally provided with glass layer 14, and tail-hood is towards inside outer barrel 1
End face, i.e., in 8 end face of tail-hood be provided with several bore dias D2 be 5mm the second sound-absorbing hole 15.It is also provided with inside drive end bearing bracket
There is glass layer 14.
Wherein, the other end of above-mentioned first antipriming pipe 3 is provided with the formation cecum of blanking cover 11 and refers to：It further include for concentrating gas
The closing in pipe 16 of the first antipriming pipe 3 of stream and support, 16 one end of closing in pipe are connect with the first antipriming pipe 3, and the other end and blanking cover 11 connect
It connects to form cecum.The closing in pipe 16 is gradually narrowed along the export direction of air-flow, big one end of 16 caliber of closing in pipe and first porous
Pipe 3 connects, and the small one end of caliber is provided with blanking cover 11.The design can suitably adjust the flow direction of air-flow.
The utility model further includes the antipriming pipe for the support of the first antipriming pipe 3 to be fixed on to 4 inner tubal wall of the second antipriming pipe
Front supporting member 17, the antipriming pipe front supporting member 17 include ontology 1 interconnected and support portion 1, wherein ontology
One 17.1 are set in 3 outer wall of the first antipriming pipe, and support portion 1 offsets with 4 inner wall of the second antipriming pipe.Support portion 1 is
Along the concave circular arcs part of one 17.1 edge of ontology connection, the concave surface of concave circular arcs part is towards tail pipe 2.It is recessed due to concave circular arcs part
Face is directed towards tail pipe 2, therefore air-flow enters from air inlet, and during the outflow of tail pipe 2, air-flow can not impact concave circular arcs part
Concave surface, therefore the stability of structure can be improved in the design.
The utility model further includes for the first antipriming pipe 3 and the support of the second antipriming pipe 4 to be fixed on glass fibre support
The antipriming pipe rear support 18 of 5 inner tubal wall of antipriming pipe, wherein antipriming pipe rear support 18 includes ontology 2 18.1 interconnected
With support portion 2 18.2, ontology 2 18.1 is set in the port outer wall that closing in pipe 16 is provided with blanking cover 11, support portion 2 18.2 with
Glass fibre support 5 inner wall of antipriming pipe offsets.The first antipriming pipe 3 and the second antipriming pipe 4 can be improved in the antipriming pipe rear support 18
It is mounted on the stability of glass fibre support antipriming pipe 5.Support portion 2 18.2 is several connecting with 2 18.1 edge of ontology
" L " font supporting element；The vertical portion of " L " font supporting element is connect with ontology 2 18.1, and lateral part and glass fibre support
5 inner wall of antipriming pipe offsets.The utility model is offseted using " L " font supporting element and glass fibre support 5 inner wall of antipriming pipe, is played
Support fixed effect.
The working principle for the gasoline engine exhaust silencer that the utility model is made of antipriming pipe is such：
The sound wave come from petrol engine outflow passes through air inlet first and is passed to inside the first antipriming pipe 3, due to this noise elimination
The 10 diameter very little of the first sound attenuation hole of device, 10 diameter d1 of the first sound attenuation hole is 3.5mm, therefore only some sound wave can pass through
First sound attenuation hole 10 and enter the gap between the first antipriming pipe 3 and the second antipriming pipe 4, and remaining sound wave cannot be by originally disappearing
First sound attenuation hole 10 of sound device, stays in inside the first antipriming pipe 3, the sound energy consumption by multiple reflections.
Into the part sound wave in the gap between the first antipriming pipe 3 and the second antipriming pipe 4, only some can pass through
Second sound attenuation hole 12 of this silencer, due to this silencer 12 diameter d2 of the second sound attenuation hole less than the first sound attenuation hole 10 diameter
D1, i.e. d2 are 3mm, and therefore, acoustic wave segment cannot pass through second sound attenuation hole 12 of this silencer.The first antipriming pipe 3 can only be stayed in
Gap multiple reflections sound energy consumption between the second antipriming pipe 4.
The later sound wave of second sound attenuation hole 12 of this silencer is passed through, a part is directly inhaled by the first of this silencer
Acoustic aperture 13 (first sound absorption bore dia D1 be 5mm) enters glass layer 14, this acoustic wave segment 14 inside of glass layer with
Glass layer 14 rubs, sound energy consumption.A part of sound wave enters this silencer by second sound-absorbing hole 15 of this silencer
The glass layer 14 of tail-hood, this acoustic wave segment occur in 14 inside of glass layer of tail-hood and the glass layer 14 of tail-hood
It rubs and sound energy consumption.A part of sound wave enters free surrounding space by the tail pipe 2 of this silencer.
The utility model without noise elimination cavity gasoline engine exhaust silencer the characteristics of it is as follows：This silencer without noise elimination cavity,
Reach two mesh by the second sound attenuation hole 12 on the first sound attenuation hole 10 and the second antipriming pipe 4 on the first antipriming pipe 3 of setting
, it can allow air-flow by but acoustic wave segment being made to cannot get through, to achieve the effect that noise reduction.Due to the first sound attenuation hole 10 and
The diameter of two sound attenuation holes 12 is smaller, and minimum 3 millimeters of the diameter of the first sound attenuation hole 10 and the second sound attenuation hole 12, so that this nothing disappears
The silencer of the operatic tunes has following characteristics：When engine speed is 4000 revs/min to 6000 revs/min, torque is better than other
What silencer.I.e. low speed when gasoline combustion it is abundant, low speed torque is good.Simultaneously because this silencer air-flow is unobstructed, so that engine
Maximum power and maximum speed be all better than other any silencers.This silencer passes through the first antipriming pipe 3 and without noise elimination cavity
Shielding action of two antipriming pipes 4 to sound wave, so that most of sound wave is shielded in 4 the inside of the first antipriming pipe 3 or the second antipriming pipe,
It can not blaze abroad.Sound wave after partially having passed through the first sound attenuation hole 10 and the second sound attenuation hole 12 is again abundant with glass layer 14
Contact, the sound wave into 14 the inside of glass layer rub with glass layer 14, and sound can be converted into thermal energy.Sound wave is inhaled
It receives sufficiently, the sound wave for being passed to the silencer external world is few, and noise elimination effect is good.
Above-described embodiment is the preferable embodiment of the utility model, but the embodiments of the present invention is not by above-mentioned
The limitation of embodiment, it is made under other any spiritual essence and principles without departing from the utility model to change, modify, replacing
In generation, simplifies combination, should be equivalent substitute mode, is included within the protection scope of the utility model.
Claims (10)
1. a kind of gasoline engine exhaust silencer being made of antipriming pipe, it is characterised in that：Including sequentially connected drive end bearing bracket,
Outer barrel, tail-hood and tail pipe；It further include being set to the intracorporal sound attenuation assembly of outer cylinder；The sound attenuation assembly include the first antipriming pipe,
Second antipriming pipe and glass fibre support antipriming pipe；
The tube wall of first antipriming pipe is provided with several the first sound attenuation holes, and the first antipriming pipe is built in the second antipriming pipe
Portion, one end is stretched out from drive end bearing bracket is used as air inlet, and the other end is provided with blanking cover and forms cecum；The tube wall of second antipriming pipe
Several the second sound attenuation holes are provided with, the second antipriming pipe is built in inside glass fibre support antipriming pipe, one end and drive end bearing bracket
Connection；
Glass fibre support antipriming pipe one end is connect with drive end bearing bracket, and the other end is connect with tail-hood；The glass fibre support
The tube wall of antipriming pipe is provided with several the first sound-absorbing hole, and glass layer is provided between outer barrel；In the tail-hood
Portion is provided with glass layer, and tail-hood is provided with several the second sound-absorbing hole towards the end face inside outer barrel.
2. the gasoline engine exhaust silencer according to claim 1 being made of antipriming pipe, it is characterised in that：More than first
The other end of hole pipe is provided with blanking cover formation cecum and refers to：It further include the closing in for the first antipriming pipe of focused airflow and support
Pipe；Closing in pipe one end is connect with the first antipriming pipe, and the other end connect to form cecum with blanking cover.
3. the gasoline engine exhaust silencer according to claim 2 being made of antipriming pipe, it is characterised in that：The receipts
Mouth pipe is gradually narrowed along the export direction of air-flow；The big one end of the closing in pipe caliber is connect with the first antipriming pipe, and caliber is small
One end is provided with blanking cover.
4. the gasoline engine exhaust silencer according to claim 1 being made of antipriming pipe, it is characterised in that：Further include
For the support of the first antipriming pipe to be fixed on to the antipriming pipe front supporting member of the second antipriming pipe inner tubal wall；The antipriming pipe front supporting member
Including ontology one interconnected and support portion one, the ontology one is set in the first porous pipe outer wall, support portion one and second
Porous inside pipe wall offsets.
5. the gasoline engine exhaust silencer according to claim 4 being made of antipriming pipe, it is characterised in that：The branch
Support part one is the concave circular arcs part connected along one edge of ontology；The concave surface of concave circular arcs part is towards tail pipe.
6. the gasoline engine exhaust silencer according to claim 2 being made of antipriming pipe, it is characterised in that：Further include
For the first antipriming pipe and the support of the second antipriming pipe to be fixed on to the antipriming pipe rear support of glass fibre support antipriming pipe inner tubal wall
Part；The antipriming pipe rear support includes ontology two and support portion two interconnected, and the ontology two is set in closing in pipe and sets
It is equipped with the port outer wall of blanking cover, support portion two supports porous inside pipe wall to offset with glass fibre.
7. the gasoline engine exhaust silencer according to claim 6 being made of antipriming pipe, it is characterised in that：The branch
Support part two is several " L " the font supporting elements connecting with two edge of ontology；The vertical portion and ontology two of " L " font supporting element
Connection, lateral part support porous inside pipe wall to offset with glass fibre.
8. the gasoline engine exhaust silencer according to claim 1 being made of antipriming pipe, it is characterised in that：Described
The diameter of one sound attenuation hole is 3mm≤d1≤4mm；The hole center of two neighboring first sound attenuation hole is away from for L1 >=3d1；
The diameter of second sound attenuation hole is 3mm≤d2≤4mm；The hole center of two neighboring second sound attenuation hole is away from for L2 >=3d2.
9. the gasoline engine exhaust silencer according to claim 1 being made of antipriming pipe, it is characterised in that：Described
One sound absorption bore dia is 3mm≤D1≤5mm；The second sound absorption bore dia is 3mm≤D2≤5mm.
10. the gasoline engine exhaust silencer according to claim 1 being made of antipriming pipe, it is characterised in that：It is described
Drive end bearing bracket is combined by Inner Front End lid and outer drive end bearing bracket lid, and Inner Front End lid is connect with the second antipriming pipe；It is set inside the drive end bearing bracket
It is equipped with glass layer；
The tail-hood is combined by interior tail-hood and outer tail-hood lid, and interior tail-hood is connect with glass fibre support antipriming pipe, interior tail-hood end
Face is provided with several the second sound-absorbing hole.
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| CN201820424671.4U CN208106527U (en) | 2018-03-27 | 2018-03-27 | A kind of gasoline engine exhaust silencer being made of antipriming pipe |
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| CN201820424671.4U CN208106527U (en) | 2018-03-27 | 2018-03-27 | A kind of gasoline engine exhaust silencer being made of antipriming pipe |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108278141A (en) * | 2018-03-27 | 2018-07-13 | 陈秀祯 | A kind of gasoline engine exhaust silencer being made of antipriming pipe |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108278141A (en) * | 2018-03-27 | 2018-07-13 | 陈秀祯 | A kind of gasoline engine exhaust silencer being made of antipriming pipe |
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