CN110359981A - Silencer, internal combustion engine vehicle adopting same and silencing control method thereof - Google Patents
Silencer, internal combustion engine vehicle adopting same and silencing control method thereof Download PDFInfo
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- CN110359981A CN110359981A CN201910653924.4A CN201910653924A CN110359981A CN 110359981 A CN110359981 A CN 110359981A CN 201910653924 A CN201910653924 A CN 201910653924A CN 110359981 A CN110359981 A CN 110359981A
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- noise elimination
- noise
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- 230000003584 silencer Effects 0.000 title claims abstract description 50
- 238000002485 combustion reaction Methods 0.000 title claims abstract description 15
- 238000000034 method Methods 0.000 title claims description 10
- 230000030279 gene silencing Effects 0.000 title abstract description 14
- 230000008030 elimination Effects 0.000 claims abstract description 72
- 238000003379 elimination reaction Methods 0.000 claims abstract description 72
- 238000005192 partition Methods 0.000 claims description 17
- 210000000664 rectum Anatomy 0.000 claims description 7
- 238000002955 isolation Methods 0.000 claims description 6
- 239000011148 porous material Substances 0.000 claims description 6
- 208000002925 dental caries Diseases 0.000 claims description 5
- 238000004080 punching Methods 0.000 claims description 3
- 238000011144 upstream manufacturing Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 description 4
- 238000001228 spectrum Methods 0.000 description 4
- 230000005855 radiation Effects 0.000 description 3
- 239000002131 composite material Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
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
-
- 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
- F01N1/06—Silencing apparatus characterised by method of silencing by using interference effect
- F01N1/065—Silencing apparatus characterised by method of silencing by using interference effect by using an active noise source, e.g. speakers
-
- 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
- F01N1/082—Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling the gases passing through porous members
-
- 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
- F01N1/16—Silencing apparatus characterised by method of silencing by using movable parts
- F01N1/168—Silencing apparatus characterised by method of silencing by using movable parts for controlling or modifying silencing characteristics only
-
- 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
- F01N1/16—Silencing apparatus characterised by method of silencing by using movable parts
- F01N1/18—Silencing apparatus characterised by method of silencing by using movable parts having rotary movement
-
- 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
- F01N2210/00—Combination of methods of silencing
- F01N2210/06—Throttling-expansion and interference
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Exhaust Silencers (AREA)
Abstract
The invention discloses a silencer, which comprises an air inlet cavity, an air exhaust cavity, a silencing microphone and a silencing cavity, wherein the silencing cavity is communicated with the air inlet cavity and the air exhaust cavity; the silencing microphone can emit silencing signals towards the silencing cavity and/or the exhaust cavity; the silencing cavity comprises a plurality of main silencing cavities, and at least one main silencing cavity is provided with at least two sub-cavities which are communicated; the first sub-cavity is divided into a plurality of first cavities; each first cavity is internally inserted with a through inner inserting pipe with a hole, one end of each first cavity is communicated with the second sub-cavity through the inner inserting pipe, and the other end of each first cavity is communicated with the exhaust cavity; the second subchamber is divided into a plurality of second cavities. The silencer can realize the noise elimination of the noise with specific frequency in a targeted manner, and when an internal combustion engine vehicle adopting the silencer works, the silencer eliminates the noise with higher energy in a peak frequency band, thereby greatly reducing the noise radiated outwards.
Description
Technical field
The invention belongs to engineering machinery field of vibration noise, disappear in particular to a kind of elimination the dedicated of special frequency channel noise
Sound device, internal-combustion engine vehicle and its noise elimination control method.
Background technique
Engine is the Main Noise Sources of engineering machinery, and noise is made of exhaust noise and Surface Radiation Noise, and is dropped
The low most common measure of exhaust noise is using exhaust silencer.
Currently, engineering machinery using it is more be reactive muffler or impedance composite muffler.Above-mentioned silencer is general
It is mainly all effective to the noise of a certain wide-band of exhaust noise, but be difficult igniting fundamental frequency to engine and frequency multiplication noise into
Row is targetedly eliminated the noise.Therefore, silencer internal structure design how is improved, special frequency channel can be targetedly reduced and make an uproar
Sound is those skilled in the art's technical problem urgently to be resolved.
By taking excavator as an example, operation revolving speed be usually it is fixed, therefore, in exhaust noise frequency spectrum generally show with
Engine speed closely related typical exhaust fundamental frequency and its frequency multiplication acoustic signal.And it is vented fundamental frequency and its frequency multiplication peak value is often determined
Determined exhaust noise size, further determine total noise of centrifuge size, therefore design it is a can specific aim reduce special frequency channel make an uproar
The silencer of sound (such as fundamental engine and its frequency multiplication) has highly important practical significance.
Currently, excavator using it is more be reactive muffler or impedance composite muffler, mainly for exhaust noise
The noise of a certain wide-band eliminate the noise.Particularly, part silencer can also design resonant silencing structure (perforated pipe, four points
One of wavelength tube etc.), achieve the purpose that carry out limited extent noise elimination to fixed frequency range noise.
Above-mentioned single resonant silencing structure eliminates the noise to special frequency channel noise, and noise elimination effect is often not ideal enough.
Secondly, the frequency spectrum of exhaust noise changes, the resonant silencing knot originally designed when engine speed variation
Structure will fail.
Summary of the invention
The technical problems to be solved by the invention:
The purpose of the present invention is to propose to a kind of silencer and using the internal-combustion engine vehicle of the silencer, such silencer can have needle
The exhaust noise of special frequency channel is eliminated to property.
It is another object of the present invention to propose a kind of control method of silencer, can be started according to internal-combustion engine vehicle
Machine revolving speed automatically controls noise elimination microphone and issues the acoustic signal for eliminating special frequency channel noise, and adjusts the inside of main noise elimination cavity
Structure size can achieve the purpose that eliminate special frequency channel noise under different rotating speeds.
Technical solution provided by the invention:
A kind of silencer, including inlet chamber, discharge chamber, noise elimination microphone and the noise elimination cavity for being connected to inlet chamber and discharge chamber；
The noise elimination microphone can emit noise elimination signal towards noise elimination cavity and/or discharge chamber；
The noise elimination cavity includes multiple main noise elimination cavities, at least one described main noise elimination cavity has the sub- chamber of at least two connections,
In two sub- chambers are as follows: the first sub- chamber positioned at airflow direction downstream and the second sub- chamber positioned at airflow direction upstream；
The first sub- chamber is separated into the first cavity of multiple isolation airtight each other；It is inserted with and passes through in each first cavity
The interpolation pipe with intercommunicating pore worn, first cavity are connected to by described interpolation pipe one end with the described second sub- chamber, the other end
It is connected to the discharge chamber；
The second sub- chamber is separated into the second cavity of multiple isolation airtight each other.
Further, perforated pipe is inserted in each second cavity, second cavity passes through the perforated pipe one
End is connected to the inlet chamber.
Further, any one second cavity only connection corresponding with one of them first cavity.
Further, the second cavity is identical as the first number of cavities, corresponds connection.
Further, the described first sub- chamber and/or the second sub- chamber are by can be around the sub- chamber center axis thereof in place
Longitudinal baffle separates.
Further, each interpolation pipe only has an intercommunicating pore, and the opening of one end of interpolation pipe extends to the first sky
It is intracavitary.
It further, further include third chamber between the first sub- chamber and the discharge chamber.
Further, at least one interpolation pipe other end and the third chamber.
Further, the volume and/or section of at least two first cavitys and/or at least two second cavitys
Shape is different.
Further, at least two interpolation pipes have different latus rectums and/or open up different apertures thereon.
Further, at least two perforated pipes have different latus rectums, length and/or punching rate.
Further, perforative poling is provided in third chamber, poling is equipped with through-hole；Poling one end is closed, makes to wear
Only by the third chamber of through-hole and place thereon, the poling other end is connected to pipe with the discharge chamber.
Further, inlet chamber, the second sub- chamber and the first sub- chamber are adjacent to be separated between the two by lateral partitions；At least one
A lateral partitions can be adjusted axially position along noise elimination cavity.
Further, noise elimination signal, which is included at least, with target noise signal frequency range there is amplitude to be less than setting value, phase difference
The acoustic signal of 180 degree.
Further, noise elimination signal includes and peak value frequency range phase difference 180 degree some or all of in exhaust noise signal
Acoustic signal.
A kind of internal-combustion engine vehicle, using above-mentioned silencer.
A kind of noise elimination control method of internal-combustion engine vehicle, comprising the following steps:
(1) the engine speed input of internal-combustion engine vehicle is read；
(2) judge whether engine speed is 0；
(3) if engine speed is 0, microphone of eliminating the noise does not work, and lateral partitions, longitudinal baffle do not act；
If engine speed is not 0, according to the preset noise elimination signal of selection of speed, and is eliminated the noise and believed by the transmitting of noise elimination microphone
Number；
And lateral partitions and longitudinal baffle optimum position are determined according to revolving speed, it controls lateral partitions and longitudinal baffle varies to most preferably
Position.
Advantageous effects of the invention:
When silencer of the invention is applied to the engine of internal-combustion engine vehicle, main noise elimination cavity uses the first sub- chamber and the second cavity
The innovative structure design of corresponding connection, can eliminate engine ignition fundamental frequency and the frequency multiplication under specific rotation speeds in exhaust noise,
It eliminates the noise to targetedly be realized to the noise of specific frequency, noise reduction effect is good.
When engine speed variation, the frequency spectrum of exhaust noise changes, and the resonant silencing structure originally designed is just
It can fail.When silencer of the invention is applied to engine, it can be turned according to engine according to engine speed, control
Speed automatically controls noise elimination microphone and issues the acoustic signal for eliminating special frequency channel noise, and adjusts the internal structure of main noise elimination cavity
Size can achieve the purpose that eliminate special frequency channel (engine ignition fundamental frequency and its frequency multiplication) noise under different rotating speeds.
Since engine of the invention eliminates the higher fundamental frequency of energy by silencer at work and frequency multiplication is made an uproar
Sound considerably reduces the noise to external radiation, thus using the engineering mechanical device of this such silencer in operation, to
The noise radiated in external environment is less, has preferably environmental-protecting performance.
Detailed description of the invention
Fig. 1 silencer outside schematic diagram；
Fig. 2 silencer schematic cross-sectional view 1；
Fig. 3 silencer schematic cross-sectional view 2；
Fig. 4 silencer schematic cross-sectional view 3；
Sub- 92 cross-sectional view of chamber of Fig. 5 second；
Sub- 91 cross-sectional view of chamber of Fig. 6 first；
12 cross-sectional view of Fig. 7 third chamber；
Fig. 8 silencer control method schematic diagram.
Specific embodiment
The invention will be further described below in conjunction with the accompanying drawings.Following embodiment is only used for clearly illustrating the present invention
Technical solution, and not intended to limit the protection scope of the present invention.
Embodiment 1
As shown in Fig. 1-Fig. 7, silencer of the invention, including shell 0, air inlet pipe 1, exhaust pipe 2 and noise elimination microphone 3.Shell
It is equipped with the noise elimination cavity of multiple connections in 0, the air inlet pipe 1 and the exhaust pipe 2 are set on the shell at noise elimination cavity both ends, into
Tracheae 1 has an inlet chamber 11 being connected to noise elimination cavity, and exhaust pipe 2 has a discharge chamber 10 being connected to noise elimination cavity.
The noise elimination cavity includes multiple main noise elimination cavities 9, at least one described main noise elimination cavity 9 has at least the two of serial communication
A sub- chamber, the sub- chamber of two of them are as follows: the first sub- chamber 91 positioned at airflow direction downstream and the second son positioned at airflow direction upstream
Chamber 92.
Third chamber 12 can also be set between first sub- chamber 91 and the discharge chamber 10.
The first sub- chamber 91 is divided into the first cavity 93 of multiple isolation airtight each other by longitudinal baffle 6.It is each described
First cavity 93 is inserted with the perforative interpolation pipe 95 for being provided with intercommunicating pore 94, and first cavity 93 passes through the interpolation pipe 95 1
End is connected to the described second sub- chamber 92, and the other end is connected to the discharge chamber 10 and/or the third chamber 12, and can pass through company
Through-hole 94 is connected to the formation of the first cavity 93.
The second sub- chamber 92 is divided into the second cavity 96 of multiple isolation airtight each other by longitudinal baffle 6.It is each described
Second cavity 96 is inserted with perforated pipe 97, and second cavity 96 is connected by described 97 one end of perforated pipe and the inlet chamber 11
It is logical.97 other end of perforated pipe only passes through in the second cavity 96, i.e. other end end is closed, keeps perforated pipe 97 only logical by thereon
Hole 971 is connected to second cavity 96 at place.
The only connection corresponding with one of them first cavity 93 of any one second cavity 96.
Preferably the second cavity 96 is identical as 93 quantity of the first cavity, corresponds connection.
Multiple interpolation pipes 95 are equipped in the first sub- chamber 91, multiple interpolation pipes 95 and second cavity 96 are one by one
Corresponding connection, each second cavity 96 are connected to by the corresponding perforated pipe 97 with the inlet chamber 11.
The volume and/or cross sectional shape of at least two first cavitys 93 are different, and at least two interpolation pipes 95 have
There are different latus rectums and/or different 94 latus rectums of intercommunicating pore.
The volume and/or cross sectional shape of at least two second cavitys 96 are different, and at least two perforated pipes 97 have
There are different latus rectums, length and/or punching rate.
Perforative poling 121 is provided in third chamber 12.Poling 121 is equipped with through-hole 1211.121 one end of poling is close
It closes, is connected to poling 121 only by through-hole 1211 thereon with the third chamber 12 at place, 121 other end of poling and the row
Air cavity 10 is connected to.
Extend the interpolation pipe 95 being connected in third chamber 12 from the first sub- chamber 91, separates with 12 air-tightness of third chamber.
Inlet chamber 11, the second sub- chamber 92, the first sub- chamber 91 and third chamber 12 are adjacent to be divided between the two by lateral partitions 5
It separates.
The whole of multiple lateral partitions 5 or in which one can be along the longitudinal variation positions of the silencer, with adjustment
The structure size of the main noise elimination cavity 9.
Longitudinal baffle 6 can be around the rotation of the center line of silencer longitudinal axis and/or the sub- chamber where it, to adjust
State the structure size of main noise elimination cavity 9.
At least there is a noise elimination microphone 3 to be arranged on shell 0, and is controlled by microphone control system 4 towards noise elimination
Device internal chamber emits noise elimination signal, to achieve the purpose that eliminate special frequency channel noise.
Noise elimination microphone 3, it is preferred that only with a noise elimination microphone arrangement on the exhaust pipe 2 or the exhaust
In chamber 10.
Noise elimination signal, including at least the acoustic signal with target noise frequency range with close amplitude, phase difference 180 degree.
Noise elimination signal can also include the acoustic signal of other frequency ranges, with some or all acoustics in exhaust noise
Signal phase difference 180 degree.
As shown in connection with fig. 8, the invention discloses a kind of noise elimination control methods, comprising the following steps:
S1: engine speed input, preferably Engine ECU revolving speed are obtained, the biography of other test engine revolving speeds can be also obtained
Sensor input；
S2: judge whether engine speed is zero；
S3: if engine speed is zero, controlling noise elimination microphone and do not work, and controls the lateral partitions in main noise elimination cavity and indulge
It is not acted to partition.
If engine speed is not zero, i.e., engine is in running order, then controls noise elimination microphone transmitting noise elimination signal
And/or lateral partitions and/or longitudinal baffle movement in the control main noise elimination cavity.
Control the step of lateral partitions and/or longitudinal baffle in main noise elimination cavity act are as follows:
According to the rotary speed information of acquisition, the optimum size of main noise elimination cavity is calculated；
Lateral partitions and/or longitudinal baffle in main noise elimination cavity are controlled to change to the optimum size of calculated main noise elimination cavity, it can
Eliminate the exhaust noise spectrum peak under corresponding revolving speed.
The step of controlling noise elimination microphone transmitting noise elimination signal are as follows:
According to the rotary speed information of acquisition, preset noise elimination signal is selected；
Control noise elimination microphone emits the noise elimination signal of selection, eliminates the target noise frequency range in exhaust noise.Embodiment 2
On the basis of embodiment 1, the silencer in embodiment 1 is applied in internal-combustion engine vehicle such as engineering machinery or automobile equipment
On engine on, the parameters of silencer can be configured according to the working frequency of engine, this makes it possible to be directed to
The noise at engine ignition fundamental frequency and frequency multiplication is eliminated, property to reach good noise elimination noise reduction effect.
Since engine of the invention eliminates the higher fundamental frequency of energy by silencer at work and frequency multiplication is made an uproar
Sound considerably reduces the noise to external radiation, thus such engineering mechanical device outwardly radiates in environment in operation
Noise is less, has preferably environmental-protecting performance.
Embodiment 3
On the basis of embodiment 2, the silencer control method in embodiment 1 is applied in internal-combustion engine vehicle such as engineering machinery or
Engine noise is eliminated on automobile equipment.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, without departing from the technical principles of the invention, several improvement and deformations can also be made, these improvement and deformations
Also it should be regarded as protection scope of the present invention.
Claims (17)
1. a kind of silencer, characterized in that including inlet chamber, discharge chamber, noise elimination microphone and connection inlet chamber and discharge chamber
Noise elimination cavity；
The noise elimination microphone can emit noise elimination signal towards noise elimination cavity and/or discharge chamber；
The noise elimination cavity includes multiple main noise elimination cavities, at least one described main noise elimination cavity has the sub- chamber of at least two connections,
In two sub- chambers are as follows: the first sub- chamber positioned at airflow direction downstream and the second sub- chamber positioned at airflow direction upstream；
The first sub- chamber is separated into the first cavity of multiple isolation airtight each other；It is inserted with and passes through in each first cavity
The interpolation pipe with intercommunicating pore worn, first cavity are connected to by described interpolation pipe one end with the described second sub- chamber, the other end
It is connected to the discharge chamber；
The second sub- chamber is separated into the second cavity of multiple isolation airtight each other.
2. silencer according to claim 1, which is characterized in that be inserted with perforated pipe in each second cavity, institute
The second cavity is stated to be connected to by described perforated pipe one end with the inlet chamber.
3. silencer according to claim 1, which is characterized in that any one second cavity is only first empty with one of them
The corresponding connection of chamber.
4. silencer according to claim 3, which is characterized in that the second cavity is identical as the first number of cavities, and one is a pair of
It should be connected to.
5. silencer according to claim 1, characterized in that the first sub- chamber and/or the second sub- chamber are by can
Longitudinal baffle around the sub- chamber center axis thereof in place separates.
6. silencer according to claim 1, which is characterized in that each interpolation pipe only has an intercommunicating pore, and is connected to
Hole is located in the first cavity.
7. silencer according to claim 1, characterized in that further include third chamber between the first sub- chamber and the discharge chamber
Room.
8. silencer according to claim 7, characterized in that at least one interpolation pipe other end and the third chamber connect
It is logical.
9. silencer according to claim 1, characterized in that at least two first cavitys and/or at least two institutes
Volume and/or the cross sectional shape for stating the second cavity are different.
10. silencer according to claim 1, characterized in that at least two interpolation pipes have different latus rectum and/
Or different apertures is opened up thereon.
11. silencer according to claim 2, characterized in that at least two perforated pipes have different latus rectums, length
Degree and/or punching rate.
12. silencer according to claim 7, characterized in that be provided with perforative poling in third chamber, set on poling
There is through-hole；Poling one end is closed, and poling is made only to pass through through-hole thereon and the third chamber at place, the poling other end and institute
State discharge chamber connection.
13. silencer according to claim 1 or 5, characterized in that inlet chamber, the second sub- chamber and the first sub- chamber, adjacent two
Separated between person by lateral partitions；At least one lateral partitions can be adjusted axially position along noise elimination cavity.
14. silencer according to claim 1, characterized in that noise elimination signal includes at least and target noise signal frequency range
It is less than the acoustic signal of setting value, phase difference 180 degree with amplitude.
15. according to claim 1 or silencer described in 14, characterized in that noise elimination signal include in exhaust noise signal
The acoustic signal of part or all of peak value frequency range phase difference 180 degree.
16. a kind of internal-combustion engine vehicle, characterized in that using silencer described in claim 13.
17. the noise elimination control method based on the internal-combustion engine vehicle described in claim 16, comprising the following steps:
(1) the engine speed input of internal-combustion engine vehicle is read；
(2) judge whether engine speed is 0；
(3) if engine speed is 0, microphone of eliminating the noise does not work, and lateral partitions, longitudinal baffle do not act；
If engine speed is not 0, according to the preset noise elimination signal of selection of speed, and is eliminated the noise and believed by the transmitting of noise elimination microphone
Number；
And lateral partitions and longitudinal baffle optimum position are determined according to revolving speed, it controls lateral partitions and longitudinal baffle varies to most preferably
Position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910653924.4A CN110359981B (en) | 2019-07-19 | 2019-07-19 | Muffler, internal combustion engine vehicle using the same, and method of controlling noise elimination thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910653924.4A CN110359981B (en) | 2019-07-19 | 2019-07-19 | Muffler, internal combustion engine vehicle using the same, and method of controlling noise elimination thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110359981A true CN110359981A (en) | 2019-10-22 |
| CN110359981B CN110359981B (en) | 2023-08-01 |
Family
ID=68220983
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910653924.4A Active CN110359981B (en) | 2019-07-19 | 2019-07-19 | Muffler, internal combustion engine vehicle using the same, and method of controlling noise elimination thereof |
Country Status (1)
| Country | Link |
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| CN (1) | CN110359981B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102322326A (en) * | 2011-07-07 | 2012-01-18 | 力士德工程机械股份有限公司 | Novel muffler for excavator |
| CN204492925U (en) * | 2015-01-14 | 2015-07-22 | 徐工集团工程机械股份有限公司 | impedance composite muffler and engineering vehicle |
| CN204553015U (en) * | 2015-03-20 | 2015-08-12 | 徐工集团工程机械股份有限公司 | A kind of duct attenuation device, vehicle sound-attenuating system and vehicle |
| CN104948263A (en) * | 2015-06-16 | 2015-09-30 | 徐工集团工程机械股份有限公司科技分公司 | Expansion and resonance compound type silencer |
| CN106481420A (en) * | 2016-05-09 | 2017-03-08 | 徐工集团工程机械有限公司 | Silencer, engine and engineering mechanical device |
| CN107023350A (en) * | 2016-02-02 | 2017-08-08 | 科勒公司 | Silencer |
| CN210509329U (en) * | 2019-07-19 | 2020-05-12 | 江苏徐工工程机械研究院有限公司 | Silencer and internal combustion engine vehicle adopting same |
-
2019
- 2019-07-19 CN CN201910653924.4A patent/CN110359981B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102322326A (en) * | 2011-07-07 | 2012-01-18 | 力士德工程机械股份有限公司 | Novel muffler for excavator |
| CN204492925U (en) * | 2015-01-14 | 2015-07-22 | 徐工集团工程机械股份有限公司 | impedance composite muffler and engineering vehicle |
| CN204553015U (en) * | 2015-03-20 | 2015-08-12 | 徐工集团工程机械股份有限公司 | A kind of duct attenuation device, vehicle sound-attenuating system and vehicle |
| CN104948263A (en) * | 2015-06-16 | 2015-09-30 | 徐工集团工程机械股份有限公司科技分公司 | Expansion and resonance compound type silencer |
| CN107023350A (en) * | 2016-02-02 | 2017-08-08 | 科勒公司 | Silencer |
| CN106481420A (en) * | 2016-05-09 | 2017-03-08 | 徐工集团工程机械有限公司 | Silencer, engine and engineering mechanical device |
| CN210509329U (en) * | 2019-07-19 | 2020-05-12 | 江苏徐工工程机械研究院有限公司 | Silencer and internal combustion engine vehicle adopting same |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110359981B (en) | 2023-08-01 |
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