CN110080856A - Noise regulating device and automobile with it - Google Patents
Noise regulating device and automobile with it Download PDFInfo
- Publication number
- CN110080856A CN110080856A CN201910351568.0A CN201910351568A CN110080856A CN 110080856 A CN110080856 A CN 110080856A CN 201910351568 A CN201910351568 A CN 201910351568A CN 110080856 A CN110080856 A CN 110080856A
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- Prior art keywords
- noise
- cavity
- expansion cavity
- regulating device
- resonant cavity
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N1/00—Silencing apparatus characterised by method of silencing
- F01N1/02—Silencing apparatus characterised by method of silencing by using resonance
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N1/00—Silencing apparatus characterised by method of silencing
- F01N1/08—Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N1/00—Silencing apparatus characterised by method of silencing
- F01N1/08—Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling
- F01N1/089—Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling using two or more expansion chambers in series
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Exhaust Silencers (AREA)
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
Abstract
The invention belongs to automobile silencing technical fields, and in particular to a kind of noise regulating device and the automobile with it.The noise regulating device includes: shell, and the shell has air inlet and exhaust outlet；At least one expansion cavity, at least one described expansion cavity are set to the inside of the shell and are connected to the air inlet；At least one resonant cavity, at least one described resonant cavity are set to the inside of the shell；At least one resistive chamber, at least one described resistive chamber are set to the inside of the shell and are connected to the exhaust outlet, at least one described resistive chamber can also be connected at least one expansion cavity；Intermediate tube, the intermediate tube is for being connected at least one described resonant cavity and at least one described expansion cavity.The present invention can improve the sound quality of automobile by the cooperation noise reduction of expansion cavity, resonant cavity, resistive chamber in the full range of speeds of engine, meet consumer to individual demands such as exhaust noise kinaestheic or kinesthesias.
Description
Technical field
The invention belongs to automobile noise reduction technical fields, more particularly to a kind of noise regulating device and with its automobile.
Background technique
Sound quality refers to the suitability of the sound in specific technical goal or task intension.Automobile sound quality is exactly full
The automobile product sound of the requirement of sufficient human and environment.Noise control is not only the passive sound pressure level for passively reducing noise, and
Be by reasonable effective measures, the noise of product can be made to sound not only quiet according to the subjective feeling of customer, and
It is melodious as far as possible, or even noise is adjusted to perfect condition, so that different products is had respective unique sound property.Improve automobile
Sound quality, improve consumer to the subjective satisfaction of noise have become automaker and engineers and technicians concern coke
Point.
Exhaust noise is one of Main Noise Sources of automobile, and sound quality has a major impact the sound quality of vehicle, therefore
It must give strict control to exhaust sound quality.In addition, the control of exhaust sound quality is not single will to reduce noise sound, more wanting can
The frequency characteristic of noise, especially the low frequency order characteristic effectively in control exhaust noise are adjusted, meets consumer to vehicle sound
The individual requirement of quality.The prior art generally by the on-off of control valve, realizes the sound under high speed and low speed both of which
Characteristic.But with the variation of engine speed, there are multiple frequency characteristics for exhaust noise, and only both of which is to be not enough to
Effect control exhaust sound quality；In addition, the prior art can not realize the adjusting to each order Energy distribution of exhaust noise.
Summary of the invention
The purpose of the present invention at least solves the problems, such as that existing mobile muffler is difficult to effectively control exhaust sound quality.The mesh
Be achieved through the following technical solutions:
The first aspect of the present invention proposes a kind of noise regulating device, comprising:
Shell, the shell have air inlet and exhaust outlet；
At least one expansion cavity, at least one described expansion cavity are set to the inside of the shell and connect with the air inlet
It is logical；
At least one resonant cavity, at least one described resonant cavity are set to the inside of the shell；
At least one resistive chamber, at least one described resistive chamber are set to the inside of the shell and connect with the exhaust outlet
Logical, at least one described resistive chamber can also be connected at least one expansion cavity；
Intermediate tube, the intermediate tube is for being connected at least one described resonant cavity and at least one described expansion cavity.
Noise regulating device provided by the invention is eliminated by the adjustable Mid Frequency energy proportioning of at least one expansion cavity
Mid-frequency noise can eliminate high-frequency noise by least one resistive chamber with sound-absorbing and pass through adjusting so that order noise more highlights
Intermediate tube is inserted into the length dimension at least one resonant cavity, and the noise reduction frequency of adjustable resonant cavity adjusts exhaust noise
Each order energy proportioning, reduces the noise of low-frequency component；The noise regulating device is more by expansion cavity, resonant cavity and resistive chamber etc.
It is not only quiet and melodious as far as possible that the cooperation noise reduction of a chamber sounds the noise of product, in addition adjust noise to
Perfect condition makes different products have respective unique sound property, improves the sound product of automobile in the full range of speeds of engine
Matter meets consumer to individual demands such as exhaust noise kinaestheic or kinesthesias.
In addition, the above-mentioned noise regulating device provided according to the present invention, can also have following additional technical characteristic:
In some embodiments of the invention, at least one described expansion cavity, at least one described resonant cavity and described
At least one resistive chamber is separated to form by being arranged in the intracorporal partition of the shell.
In some embodiments of the invention, the quantity of at least one expansion cavity is two, including is moved along exhaust
Direction is sequentially communicated the first expansion cavity and the second expansion cavity of arrangement, and the inside of first expansion cavity is equipped with the air inlet inner tube, institute
The one end for stating the air inlet inner tube is connected to the air inlet, and the other end of the air inlet inner tube is connected with second expansion cavity,
Multiple first perforation are evenly equipped on the side wall of the air inlet inner tube along circumferential direction.
In some embodiments of the invention, the quantity of at least one resonant cavity is three, including with described first
The first resonant cavity and the second resonant cavity that expansion cavity is respectively communicated with and the third resonant cavity being connected to second expansion cavity, institute
It states and is connected between the first resonant cavity and first expansion cavity by the first intermediate tube, second resonant cavity and described first expands
It opens and is connected between chamber by the second intermediate tube, connected between the third resonant cavity and second expansion cavity by third intermediate tube
It is logical.
In some embodiments of the invention, the quantity of at least one resistive chamber is one.
In some embodiments of the invention, the intermediate tube is telescopic sleeve pipe, and the telescopic sleeve pipe includes outer cylinder
And it is coaxially set in the inner cylinder in the outer cylinder, the inner cylinder can be moved along the axis direction reciprocating linear of the outer cylinder to be stretched
Out or the outer cylinder is protruded into, to adjust the length of the intermediate tube.
In some embodiments of the invention, the inside of the resistive chamber is equipped with exhaust inner tube, described to be vented the one of inner tube
End is connected to the exhaust outlet, and the other end of the exhaust inner tube is connected to second expansion cavity, the side of the exhaust inner tube
Multiple second perforation are evenly equipped on wall along circumferential direction.
In some embodiments of the invention, the noise regulating device also has controller and actuator, the control
Device is electrically connected with the actuator, the controller can control the actuator adjust the intermediate tube be inserted into it is described at least
The length of the inside of one resonant cavity.
In some embodiments of the invention, the resistive intracavitary resistive material being equipped with for absorbing high band noise.
The second aspect of the present invention proposes a kind of automobile, has above-mentioned noise regulating device, and the noise adjusts dress
The air inlet set is connect with the exhaust manifold of the engine of the automobile.
Detailed description of the invention
By reading the following detailed description of the preferred embodiment, various other advantages and benefits are common for this field
Technical staff will become clear.The drawings are only for the purpose of illustrating a preferred embodiment, and is not considered as to the present invention
Limitation.And throughout the drawings, identical component is presented with like reference characters.In the accompanying drawings:
Fig. 1 schematically shows the structural schematic diagram of the noise regulating device of embodiment according to the present invention；
Each label is expressed as follows in attached drawing:
1- shell, 101- air inlet, 102- exhaust outlet；
The first expansion cavity of 21-, the second expansion cavity of 22-；
The first resonant cavity of 31-, the second resonant cavity of 32-, 33- third resonant cavity；
The resistive chamber of 4-；
51- first partition, 52- second partition, 53- third partition, the 4th partition of 54-, the 5th partition of 55-；
The first intermediate tube of 61-, the second intermediate tube of 62-, 63- third intermediate tube；
7- controller；8- actuator；
20- air inlet pipe, 30- exhaust pipe, 201- the air inlet inner tube, 301- are vented inner tube.
Specific embodiment
The illustrative embodiments of the disclosure are more fully described below with reference to accompanying drawings.Although showing this public affairs in attached drawing
The illustrative embodiments opened, it being understood, however, that may be realized in various forms the disclosure without the reality that should be illustrated here
The mode of applying is limited.It is to be able to thoroughly understand the disclosure on the contrary, providing these embodiments, and can be by this public affairs
The range opened is fully disclosed to those skilled in the art.
It should be understood that term used herein merely for description particular example embodiment purpose, and have no intention into
Row limitation.Unless the context clearly indicates otherwise, otherwise singular " one " as used in the text, "one" and " described "
Can also indicate to include plural form.The terms "include", "comprise", " containing " and " having " are inclusives, and therefore
It indicates the presence of stated feature, step, operations, elements, and/or components, but presence or addition one or more is not precluded
A other feature, step, operation, component, assembly unit, and/or their combination.Method and step, process, the Yi Jicao of described in the text
It is not interpreted as that them is necessarily required to execute with described or explanation particular order, executes sequence unless explicitly stated otherwise.Also answer
The step of working as understanding, can be used additionally or alternatively.
Although can be described in the text using term first, second, third, etc. multiple element, component, region, layer and/
Or section, still, these component, assembly units, region, layer and/or section should not be limited by these terms.These terms can be only
For a component, assembly unit, region, layer or section are distinguished with another region, layer or section.Unless context clearly refers to
Out, do not implied that when otherwise the term and other numerical terms of such as " first ", " second " etc use in the text sequence or
Person's order.Therefore, first element discussed below, component, region, layer or section are in the introduction for not departing from example embodiment
In the case of can be referred to as second element, component, region, layer or section.
For ease of description, an element as illustrated in the diagram can be described use space relativeness term in the text
Either feature is relative to another element or the relationship of feature, these relativeness terms are, for example, " inside ", " outside ", " interior
Side ", " outside ", " following ", " lower section ", " above ", " top " etc..This spatial correlation term is intended to include removing to retouch in figure
The different direction of device in use or operation except the orientation drawn.For example, being retouched if the device in figure is overturn
State for " below other elements or feature " either the element " below other elements or feature " will then be orientated "
Above other elements or feature " either " above other elements or feature ".Therefore, exemplary term " in ... lower section " can
To include in orientation upper and under.In addition device can be oriented and (be rotated by 90 ° or in other directions) and used herein
Spatial correlation descriptor correspondingly explains.
Exhaust noise is that most important noise source, noise are generally higher by than engine total noise of centrifuge in engine noise
10~15dB (A).Engine exhaust category high temperature (800~1000D), high pressure gas.Exhaust process is generally divided into two stages, i.e.,
Free exhaust stage and forced exhaust stage, engine exhaust are gone out from exhaust valve high speed, enter noise elimination dress along exhaust manifold
It sets, is finally discharged into atmosphere from tailpipe, produce wide band exhaust noise in this course.
Exhaust sound quality has important influence to automobile sound quality.Automobile exhaust noise includes a large amount of order information,
Energy be mainly distributed on engine ignition order and harmonic order (such as ignition of four cylinder four-stroke engine and harmonic order at
It is divided into 2,4,6 ... ranks, the ignition of six cylinder four-stroke engines and harmonic order ingredient are 3,6,9 ... ranks), and with hair
The variation of motivation revolving speed, ignition order and the corresponding frequency of harmonic order can change accordingly.Exhaust sound quality can quantify
It is described as follows:
SQ=α × Order+ β × Tonality+ λ × SPL+ γ × Speed+ τ
In formula, α, β, λ, γ, τ are coefficient entry；The main order ingredient of Order expression exhaust noise；Tonality is indicated
The tone degree of exhaust noise；The overall sound pressure level of SPL expression exhaust noise；The revolving speed of Speed expression engine.According to above-mentioned public affairs
Formula, the essence of exhaust sound quality control are to control exhaust noise in the Energy distribution of low frequency, intermediate frequency, high band, and main point
Energy distribution of the cloth in each order ingredient of low-frequency range.
Fig. 1 is that (arrow direction is exhaust stream in figure for the structural schematic diagram of the noise regulating device of one embodiment of the invention
To).As shown in Figure 1, embodiment according to the present invention proposes a kind of noise regulating device, including shell 1 and it is set to
At least one expansion cavity, at least one resonant cavity, at least one resistive chamber 4 and intermediate tube in shell 1, shell 1 have air inlet
Mouth 101 and exhaust outlet 102, at least one expansion cavity are connected to air inlet 101, at least one resistive chamber 4 connects with exhaust outlet 102
Logical, at least one resistive chamber 4 can also be connected at least one expansion cavity, intermediate tube for be connected at least one resonant cavity and
At least one expansion cavity.
Noise regulating device provided by the invention is eliminated by the adjustable Mid Frequency energy proportioning of at least one expansion cavity
Mid-frequency noise can eliminate high-frequency noise by least one resistive chamber with sound-absorbing and pass through adjusting so that order noise more highlights
The size of at least one resonant cavity, the noise reduction frequency of adjustable resonant cavity adjust each order energy proportioning of exhaust noise, reduce
The noise of low-frequency component；The noise regulating device is made by the cooperation noise reduction of multiple chambers such as expansion cavity, resonant cavity and resistive chamber
The noise of product sounds not only peace and quiet, and melodious as far as possible, or even adjusts noise to perfect condition, makes different productions
Product have respective unique sound property, improve the sound quality of automobile in the full range of speeds of engine, meet consumer to exhaust
The individual demands such as noise dynamics sense or kinesthesia.In addition, being provided with air flow path when multiple chambers increase exhaust, make gas
The reduced velocity flow of stream is slowly discharged, advanced optimizes exhaust noise reduction effect.
In some embodiments of the invention, the quantity of at least one expansion cavity is two, including along the exhaust direction of motion
It is sequentially communicated the first expansion cavity 21 and the second expansion cavity 22 of arrangement, the inside of the first expansion cavity 21 is equipped with the air inlet inner tube 201, into
One end of gas inner tube 201 is connected to air inlet 101, and the other end of the air inlet inner tube 201 is connected with the second expansion cavity 22, in air inlet
Multiple first perforation are evenly equipped on the side wall of pipe 201 along circumferential direction, the air-flow in the air inlet inner tube 201 can pass through the first perforation
Into the first expansion cavity 21.
Air inlet pipe 20 is located at the part (the air inlet inner tube 201) in the first expansion cavity 21 and forms micropunch equipped with the first perforation and disappear
Sound structure, when exhaust airstream enters noise regulating device, air-flow enters into and through on 201 side wall of the air inlet inner tube with air inlet pipe 20
First perforate into the first expansion cavity 21, air-flow is spread after entering the first expansion cavity 21, and consumption gas energy simultaneously reduces noise.
Since the section of the first expansion cavity 21 is greater than the section of air inlet pipe 20, the mutation of flow area leads to the characteristic of sound wave
It changing, a part of incidence wave will be reflected back toward original sound source, inhibit the outside propagation of sound wave, and play noise elimination and make
With so that noise obtains a degree of decaying.Theoretically, the abrupt change of cross-section is more obvious, and noise divergence ratio is bigger, noise elimination effect
Also it is just more obvious, therefore, second expansion cavity 22 energy bigger in the downstream of the first expansion cavity 21 setting sectional area along airflow direction
Enough further noise reductions.The different length and width of first expansion cavity 21 and the second expansion cavity 22 make their main noise elimination frequencies again
Rate section has differences, and can generate the noise elimination effect of more wideband, step by step by the first expansion cavity 21 and the second expansion cavity 22
Noise elimination can eliminate mid-frequency noise.In addition, the first expansion cavity 21 and the biggish volume of the second expansion cavity 22 can reduce air-flow stream
Speed weakens gas, moreover it is possible to play certain pressure stabilization function.
The quantity of at least one resonant cavity is three, and the resonant cavity is helmholtz resonance chamber, including is expanded with first
The first resonant cavity 31 and the second resonant cavity 32 that chamber 21 is respectively communicated with and the third resonant cavity 33 being connected to the second expansion cavity 22,
It is connected between first resonant cavity 31 and the first expansion cavity 21 by the first intermediate tube 61, the second resonant cavity 32 and first expansion
It is connected between chamber 21 by the second intermediate tube 62, is connected between third resonant cavity 33 and the second expansion cavity 22 by third intermediate tube 63
It is logical.Noise regulating device uses resonance, and the interference noise of different frequency can be generated in resonant cavity, causes to do to exhaust noise
It disturbs, improves noise reduction effect.After noise enters resonant cavity by intermediate tube, the noise of intermediate frequency and low frequency further weakens, final noise
Just drop to a relatively low level.In addition, resonant cavity to be arranged in the side of different expansion cavities, Ke Yi in the present embodiment
Noise is eliminated in wide frequency range.
Above-mentioned intermediate tube is telescopic sleeve, including outer cylinder and is coaxially set in inner cylinder in outer cylinder, and the two of outer cylinder
End is respectively protruding into in resonant cavity and in expansion cavity, and inner cylinder can move stretching or be protruded into along the axis direction reciprocating linear of outer cylinder
Outer cylinder, to adjust the length of intermediate tube.
The noise reduction frequency of helmholtz resonance chamber is,
C is the velocity of sound in formula, and S is the sectional area in helmholtz resonance lumen road, and V is the volume of helmholtz resonance chamber, and L is
The length in helmholtz resonance lumen road.
According to above-mentioned formula, in the case where S, V are fixed, it is only necessary to adjust the length L in helmholtz resonance lumen road just
Adjustable noise reduction frequency.
It, can be with by adjusting the length of the first intermediate tube 61, the second intermediate tube 62, the second intermediate tube 63 in the present embodiment
The noise reduction frequency of helmholtz resonance chamber corresponding to intermediate tube is adjusted, the energy proportioning of exhaust noise difference order is adjusted, with
The variation of engine speed is adapted to, automobile sound quality is improved.
The quantity of at least one resistive chamber 4 is one, and the inside of resistive chamber 4 is equipped with exhaust inner tube 301, is vented inner tube 301
One end be connected to exhaust outlet 102, exhaust inner tube 301 the other end be connected to the second expansion cavity 22, exhaust inner tube 301 side wall
On be evenly equipped with along circumferential direction it is multiple second perforation, enable exhaust inner tube 301 in air-flow pass through second perforation enter resistance
In property chamber 4.
Filled with the resistive material for absorbing high band noise, when sound wave passes through resistive material, high frequency in resistive chamber 4
Noise is absorbed by resistive material and is transformed into thermal energy, to reduce high-frequency noise.Due to the noise along pipe transmmision with distance and
Decaying, can be improved high frequency noise elimination effect for the position that resistive chamber 4 is positioned close to exhaust outlet 102.
In some embodiments of the invention, at least one above-mentioned expansion cavity, at least one resonant cavity and at least one
A resistive chamber passes through the partition being arranged in shell 1 and is separated to form.
In the present embodiment, the first expansion cavity 21, the second expansion cavity 22 and resistive chamber 4 pass through the axial direction along shell 1
Successively spaced vertical first partition 51 and second partition 52 are separated to form, and first partition 51 and second partition 52 are connected to
On the inner wall of shell 1, and match with the sectional dimension of shell 1.By the axial direction for adjusting first partition 51 and second partition 52
The volume of size adjustable first expansion cavity 21 and the second expansion cavity 22, so as to adjust Mid Frequency energy proportioning.
In first expansion cavity 21, it is separated to form by horizontally disposed third partition 53 in the top of the first expansion cavity 21 humorous
Shake chamber, and resonant cavity is divided into the first resonant cavity 31 and the second resonant cavity further through the 4th vertically arranged partition 54 in resonant cavity
32, the first intermediate tube 61 and the second intermediate tube 62 are each attached on third partition 53, and the both ends of the first intermediate tube 61 are respectively with
One expansion cavity 21 is connected to the first resonant cavity 31, the both ends of the second intermediate tube 62 respectively with the first expansion cavity 21 and the second resonant cavity
32 connections.
The lower section of resistive chamber 4 is separated to form third resonant cavity 33 by the 5th horizontal partition 55, and third intermediate tube 63 is solid
It is scheduled on second partition 52, the both ends of third intermediate tube 63 are connected to the second expansion cavity 22 and third resonant cavity 33 respectively, diffusion
Gas into the second expansion cavity 22 enters in third resonant cavity 33 by third intermediate tube 63.
It in other embodiments of the invention, can be by changing the pipeline section product of resonant cavity or the appearance of resonant cavity
Product changes the noise reduction frequency of helmholtz resonance chamber, so as to adjust each order energy proportioning of exhaust noise.For example, by third every
Plate 53 and the 4th partition 54 are set as moveable bulkhead, so that the cavity of resonant cavity is adjustable, it is humorous so as to adjust first
The noise reduction frequency of vibration chamber 31 and the second resonant cavity 32.
Further, can also by changing simultaneously the sectional area S in helmholtz resonance lumen road, helmholtz resonance chamber
The volume V and length L in helmholtz resonance lumen road adjusts each order energy proportioning of exhaust noise.
Each order energy proportioning of 3 whole low-frequency ranges of helmholtz resonance intonation, 2 expansion intonations are used in the present embodiment
Whole Mid Frequency energy proportioning and 1 resistive chamber 4 eliminate high band noise, meet the target for improving exhaust sound quality.In this hair
, can also be by increasing or reducing the quantity of resonant cavity, expansion cavity and resistive chamber 4 in bright other embodiments, and pass through and change
Become the position distribution of resonant cavity, expansion cavity and resistive chamber 4, to adapt to the actual demand of different automobile product noises, realizes not
With the improvement of automobile sound quality in the full range of speeds of engine.
Since the quantity of resonant cavity is more, the order scale of the exhaust noise of adjustable low-frequency range is wider, therefore, at this
In some embodiments of invention, the resonant cavity being connected to the first expansion cavity 21 may be configured as one or more, can be by the first resonance
Chamber 31 and the second resonant cavity 32 are integrated, and may also set up multiple the 4th vertical partitions 54, will be arranged in the first expansion cavity 21
The resonant cavity of top is divided into more small resonant cavities.The quantity for the resonant cavity being connected to other expansion cavities can also be set as needed
It sets, the present invention does not limit specifically.
Noise regulating device provided by the invention also has controller 7 and actuator 8, and controller 7 is electrically connected with actuator 8
It connects, actuator 8 is electrically connected from different intermediate tubes respectively, and controller 7 can control the adjustment intermediate tube of actuator 8 and be inserted at least
The length of the inside of one resonant cavity adjusts the noise reduction frequency of different resonant cavities then to adapt to the variation of engine speed.
Controller 7 can be according to the tach signal of engine, the delivery temperature pressure signal of air inlet pipe 20, air inlet pipe 20
Noise signal and preset control program will execute instruction and be sent to actuator 8, and actuator 8 refers to according to the execution of controller 7
Enable the length for changing different intermediate tubes.Controller 7 may be set to be the noise signal according to exhaust pipe 30, realize actuator
8 feedback control.
In some embodiments of the invention, the shell 1 of noise regulating device and resonant cavity in shell 1, expansion cavity with
And the shape of resistive chamber can according to need setting, such as noise regulating device can make an uproar for box noise regulating device, barrel type
Tone regulating device or special-shaped noise regulating device etc..
In some embodiments of the invention, air inlet pipe 20 and exhaust pipe 30 are in horizontally disposed, and air inlet pipe 20 is located at row
The lower section of tracheae 30, such lower part air inlet, top outlet arrangement be more advantageous to the flowing of gas.
The second aspect of the present invention proposes a kind of automobile, which has above-mentioned noise regulating device, and noise is adjusted
The air inlet pipe 20 of device is connect with the exhaust manifold of automobile engine.The exhaust airstream of automobile flows through exhaust manifold and via air inlet
Pipe 20 enters in noise regulating device, is eliminated the noise step by step adjustable Mid Frequency energy by the expansion cavity being sequentially arranged along airflow direction
Amount proportion, eliminates mid-frequency noise；By resistive chamber 4 high-frequency noise can be eliminated with sound-absorbing；By the pipeline for adjusting different resonant cavities
Length, the noise reduction frequency of adjustable each resonant cavity, adjust each order of exhaust noise low-frequency range energy proportioning, reduce low frequency at
The noise divided.Gas after noise reduction is discharged in the tailpipe importing atmosphere for passing through engine by exhaust pipe 30, and length is passed through
Tail pipe effect eliminates engine exhaust energy again, finally successfully eliminates engine noise, improves the sound quality of automobile.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
In the technical scope disclosed by the present invention, any changes or substitutions that can be easily thought of by anyone skilled in the art,
It should be covered by the protection scope of the present invention.Therefore, protection scope of the present invention should be with the protection model of the claim
Subject to enclosing.
Claims (10)
1. a kind of noise regulating device characterized by comprising
Shell, the shell have air inlet and exhaust outlet；
At least one expansion cavity, at least one described expansion cavity are set to the inside of the shell and are connected to the air inlet；
At least one resonant cavity, at least one described resonant cavity are set to the inside of the shell；
At least one resistive chamber, at least one described resistive chamber are set to the inside of the shell and are connected to the exhaust outlet, institute
Stating at least one resistive chamber can also be connected at least one expansion cavity；
Intermediate tube, the intermediate tube is for being connected at least one described resonant cavity and at least one described expansion cavity.
2. noise regulating device according to claim 1, which is characterized in that at least one described expansion cavity, it is described at least
One resonant cavity and at least one described resistive chamber are separated to form by being arranged in the intracorporal partition of the shell.
3. noise regulating device according to claim 2, which is characterized in that the quantity of at least one expansion cavity is two
It is a, including being sequentially communicated the first expansion cavity and the second expansion cavity of arrangement along the exhaust direction of motion, first expansion cavity it is interior
Portion is equipped with the air inlet inner tube, and one end of the air inlet inner tube is connected to the air inlet, the other end of the air inlet inner tube with it is described
Second expansion cavity is connected, and is evenly equipped with multiple first perforation on the side wall of the air inlet inner tube along circumferential direction.
4. noise regulating device according to claim 3, which is characterized in that the quantity of at least one resonant cavity is three
It is a, connect including the first resonant cavity and the second resonant cavity that are respectively communicated with first expansion cavity and with second expansion cavity
Logical third resonant cavity is connected between first resonant cavity and first expansion cavity by the first intermediate tube, described second
Be connected between resonant cavity and first expansion cavity by the second intermediate tube, the third resonant cavity and second expansion cavity it
Between be connected to by third intermediate tube.
5. noise regulating device according to claim 1, which is characterized in that the quantity of at least one resistive chamber is one
It is a.
6. noise regulating device according to claim 1, which is characterized in that the intermediate tube is telescopic sleeve pipe, described
The inner cylinder that telescopic sleeve pipe includes outer cylinder and is coaxially set in the outer cylinder, the inner cylinder can be along the axis of the outer cylinder
Direction reciprocating linear is mobile to be stretched out or protrudes into the outer cylinder, to adjust the length of the intermediate tube.
7. noise regulating device according to claim 3, which is characterized in that the inside of the resistive chamber is equipped in exhaust
One end of pipe, the exhaust inner tube is connected to the exhaust outlet, and the other end and second expansion cavity of the exhaust inner tube connect
It is logical, multiple second perforation are evenly equipped on the side wall of the exhaust inner tube along circumferential direction.
8. noise regulating device according to claim 1, which is characterized in that the noise regulating device also has controller
And actuator, the controller are electrically connected with the actuator, the controller can control the actuator and adjust in described
Between pipe be inserted at least one resonant cavity inside length.
9. noise regulating device according to claim 1, which is characterized in that described resistive intracavitary equipped with for absorbing high frequency
The resistive material of section noise.
10. a kind of automobile, which is characterized in that have noise regulating device according to any one of claim 1 to 9, institute
The air inlet for stating noise regulating device is connect with the exhaust manifold of the engine of the automobile.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910351568.0A CN110080856B (en) | 2019-04-28 | 2019-04-28 | Noise adjusting device and have its car |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910351568.0A CN110080856B (en) | 2019-04-28 | 2019-04-28 | Noise adjusting device and have its car |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110080856A true CN110080856A (en) | 2019-08-02 |
| CN110080856B CN110080856B (en) | 2021-01-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910351568.0A Active CN110080856B (en) | 2019-04-28 | 2019-04-28 | Noise adjusting device and have its car |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110579269A (en) * | 2019-08-14 | 2019-12-17 | 中国地震局地壳应力研究所 | infrasonic wave sensor for rarefied atmosphere space and sound detection load cabin |
| CN113482754A (en) * | 2021-07-30 | 2021-10-08 | 重庆长安汽车股份有限公司 | Noise eliminator and vehicle |
| CN114170992A (en) * | 2022-02-11 | 2022-03-11 | 科大讯飞(苏州)科技有限公司 | Method and device for evaluating active noise reduction effect of vehicle, storage medium and equipment |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110579269A (en) * | 2019-08-14 | 2019-12-17 | 中国地震局地壳应力研究所 | infrasonic wave sensor for rarefied atmosphere space and sound detection load cabin |
| CN110579269B (en) * | 2019-08-14 | 2022-05-31 | 中国地震局地壳应力研究所 | Infrasonic wave sensor for rarefied atmosphere space and sound detection load cabin |
| CN113482754A (en) * | 2021-07-30 | 2021-10-08 | 重庆长安汽车股份有限公司 | Noise eliminator and vehicle |
| CN114170992A (en) * | 2022-02-11 | 2022-03-11 | 科大讯飞(苏州)科技有限公司 | Method and device for evaluating active noise reduction effect of vehicle, storage medium and equipment |
| CN114170992B (en) * | 2022-02-11 | 2022-08-05 | 科大讯飞(苏州)科技有限公司 | Method and device for evaluating active noise reduction effect of vehicle, storage medium and equipment |
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