CN201486706U - Noise reduction device of engine air inlet system - Google Patents
Noise reduction device of engine air inlet system Download PDFInfo
- Publication number
- CN201486706U CN201486706U CN2009201867333U CN200920186733U CN201486706U CN 201486706 U CN201486706 U CN 201486706U CN 2009201867333 U CN2009201867333 U CN 2009201867333U CN 200920186733 U CN200920186733 U CN 200920186733U CN 201486706 U CN201486706 U CN 201486706U
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- Prior art keywords
- air
- noise reduction
- strainer
- noise
- reduction device
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- 230000009467 reduction Effects 0.000 title abstract description 14
- 230000006698 induction Effects 0.000 claims description 14
- 230000008859 change Effects 0.000 claims description 3
- 230000009466 transformation Effects 0.000 abstract description 2
- 230000006872 improvement Effects 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000030279 gene silencing Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000006227 byproduct Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- Soundproofing, Sound Blocking, And Sound Damping (AREA)
- Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
Abstract
The utility model discloses a noise reduction device of an engine air inlet system, which comprises an air inlet hose, an air filter and an air lead pipe. The noise reduction device is characterized in that a wavelength pipe is arranged on the air inlet hose, a resonant cavity is arranged at the lower part of the air filter, and the sectional area of the air lead pipe is gradually increased from the air filter to an engine. By adopting the above structure, the noise reduction device has the following advantages: 1. the air inlet noise of the automobile engine is effectively lowered; 2. the structure is simple, the production is convenient, and the transformation of a present product is also convenient; 3. by utilizing the mutual counteraction and noise reduction of sound waves, the noise reduction device does not need other redundant devices, thereby leading to low production cost.
Description
Relate to the field
The utility model relates to automotive engine air intake system, particularly a kind of denoising device of engine aspirating system.
Background technique
Noise is the by-product that industrial society brings, and it pollutes with pollution of atmosphere and water and is considered to the world today's three big public hazards.Compare with other two public hazards, the The noise face is the widest, feels the most direct, and people's reflection is also maximum.Automobile is popularized day by day as a kind of main traffic tool and is increased, thereby the environmental pollution that automobile noise caused is also serious day by day.Fierce day by day along with automobile market competition, with the class vehicle the comprehensive price ratio aspect the traditional performance more and more near and all reached higher level, therefore, improve the vehicle noise controlling level and become new focus of the competition and technological development direction.Under this background, the NVH of vehicle (Noise/Vibration/Harshness) performance develops into important design objective just gradually.
The noise of motor is the automobile main noise source, and along with the advancing by leaps and bounds of engine technology, engine noise reduces significantly.Other noise sources outside the motor such as induction noise increase relatively to the contribution portion of vehicle overall noise, and the induction noise problem more and more comes into one's own.It is the problem that prior art need solve that a kind of car engine air admittance noise that can reduce is provided.
The model utility content
Technical problem to be solved in the utility model is to provide a kind of denoising device of engine aspirating system, to reach the purpose that reduces the car engine air admittance noise.
For solving the problems of the technologies described above, the technical solution of the utility model is, a kind of denoising device of engine aspirating system, comprise air induction hose, air-strainer, air entraining pipe, it is characterized in that: described air induction hose is provided with the wavelength pipe, the air-strainer bottom is provided with resonant cavity, and the sectional area of air entraining pipe is to be changed to big by little from the air-strainer to the motor, thereby by the improvement of three aspects engine aspirating system is carried out comprehensive noise reduction.
The length of described wavelength pipe be in the air-strainer wave length of sound 1/4th, thereby opposite the cancelling out each other of sound wave phase place of same frequency in making the sound wave gone back among the person in charge and being responsible for realized noise reduction.
Described resonant cavity is connected by connecting tube with air-strainer, and the length by the control connection pipe reduces noise.
Described air entraining pipe is connected with honeycomb duct, and honeycomb duct is fixed in the air-strainer by rivet, thereby reduces noise and guarantee that intake resistance can be not excessive.
A kind of denoising device of engine aspirating system, owing to adopt said structure, this device has the following advantages: 1, effectively reduce the car engine air admittance noise; 2, simple in structure, the transformation of aspect production and existing product; 3, utilize the noise reduction of cancelling out each other of sound wave, do not increase other unnecessary devices, cost of production is low.
Description of drawings
Below in conjunction with the drawings and specific embodiments the utility model is described in further detail;
Fig. 1 is the structural representation of the denoising device of a kind of engine aspirating system of the utility model;
Fig. 2 is the air-strainer internal structure schematic representation of the denoising device of a kind of engine aspirating system of the utility model;
Fig. 3 is the air-strainer of denoising device of a kind of engine aspirating system of the utility model and the connection diagram of resonator;
In Fig. 1-3,1, air-strainer; 2, air entraining pipe; 3, air induction hose; 4, resonant cavity; 5, wavelength pipe; 6, honeycomb duct; 7, connecting tube.
Embodiment
As Figure 1-3, a kind of denoising device of engine aspirating system, comprise air induction hose 3, air-strainer 1, air entraining pipe 2, it is characterized in that: described air induction hose 3 is provided with wavelength pipe 5, air-strainer 1 bottom is provided with resonant cavity 4, the sectional area of air entraining pipe 2 is to change to big from air-strainer 1 to motor by little, thereby by the improvement of three aspects engine aspirating system is carried out comprehensive noise reduction.
The length of described wavelength pipe 5 be in the air-strainer 1 wave length of sound 1/4th, thereby opposite the cancelling out each other of sound wave phase place of same frequency in making the sound wave gone back among the person in charge and being responsible for realized noise reduction.
Described resonant cavity 4 is connected by connecting tube 7 with air-strainer 1, and the length by control connection pipe 7 reduces noise.
Described air entraining pipe 2 is connected with honeycomb duct 6, and honeycomb duct 6 is fixed in the air-strainer 1 by rivet, thereby reduces noise and guarantee that intake resistance can be not excessive.
Reasonably design and select for use air-strainer 1 can effectively control induction noise, air-strainer 1 shared volume can be used as the expansion chamber of expansibility silencing apparatus.Air-strainer is equivalent to an expansion baffler, the factor that influences its transmission loss has two: thus the length of divergence ratio and filter cleaner. reduce air entraining pipe 2 sectional areas and can increase the effect that divergence ratio plays noise reduction, the air entraining pipe 2 of a vary in diameter of the utility model design, the sectional area of air entraining pipe 2 is to change to big from air-strainer 1 to motor by little, can guarantee also when helping noise reduction that intake resistance is unlikely to excessive; Air entraining pipe 2 probes into air-strainer 1 intrinsic honeycomb duct 6, can cooperate the interior air flue design of air-strainer 1 body to eliminate noise, improves the transmission loss of filter cleaner.
As shown in Figure 3, resonant cavity type silencing apparatus resonant frequency is calculated formula:
f＝(C/2π)*(S/(L*V))1/2
Wherein: C-is airborne velocity of sound
L-connecting tube length
S-connecting tube average cross-section
The volume of V-resonant cavity
The f-resonant frequency
For example, resonant cavity connecting tube length L=20mm, connecting tube diameter of section d=20mm, volume V=2.2L, respective resonant frequencies f=83Hz.
Quarter-wave long tube 5 is mounted in the pipe of a sealing on the air induction hose 3, after sound wave enters wavelength pipe 5 from air induction hose 3, sound wave is closed end and reflects back into air induction hose 3, the sound wave of some frequency be responsible in same frequency sound wave since phase place cancel out each other on the contrary mutually, thereby reach the noise reduction purpose.
The frequency of quarter-wave long tube 2 resonance is:
For example, the quarter-wave long tube is connected on the air induction hose, and length is about 190mm, and resonant frequency is 430Hz.
In conjunction with the accompanying drawings the utility model has been carried out exemplary description above; obviously the utility model specific implementation is not subjected to the restriction of aforesaid way; as long as the various improvement of having adopted method design of the present utility model and technological scheme to carry out; or directly apply to other occasion without improvement, all within protection domain of the present utility model.
Claims (4)
1. the denoising device of an engine aspirating system, comprise air induction hose (3), air-strainer (1), air entraining pipe (2), it is characterized in that: described air induction hose (3) is provided with wavelength pipe (5), air-strainer (1) bottom is provided with resonant cavity (4), and the cross-section area of air entraining pipe (2) is to change to big from air-strainer (1) to motor by little.
2. the denoising device of a kind of engine aspirating system according to claim 1 is characterized in that: the length of described wavelength pipe (5) be in the air-strainer (1) wave length of sound 1/4th.
3. the denoising device of a kind of engine aspirating system according to claim 1, it is characterized in that: described resonant cavity (4) is connected by connecting tube (7) with air-strainer (1).
4. the denoising device of a kind of engine aspirating system according to claim 1, it is characterized in that: described air entraining pipe (2) is connected with honeycomb duct (6), and honeycomb duct (6) is fixed in the air-strainer (1) by rivet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201867333U CN201486706U (en) | 2009-07-31 | 2009-07-31 | Noise reduction device of engine air inlet system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201867333U CN201486706U (en) | 2009-07-31 | 2009-07-31 | Noise reduction device of engine air inlet system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201486706U true CN201486706U (en) | 2010-05-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201867333U Expired - Lifetime CN201486706U (en) | 2009-07-31 | 2009-07-31 | Noise reduction device of engine air inlet system |
Country Status (1)
| Country | Link |
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| CN (1) | CN201486706U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102012000806A1 (en) | 2011-02-16 | 2012-08-16 | Mann + Hummel Gmbh | Resonator system for noise reduction of air filter system of gas inlet system of engine of motor vehicle, has housing and insertion part, where housing is designed such that its inner portion is designed as hollow space |
| CN103590939A (en) * | 2012-08-14 | 2014-02-19 | 重庆长安汽车股份有限公司 | Air filter capable of reducing high frequency noise in engine air inlet |
| CN104121125A (en) * | 2014-07-25 | 2014-10-29 | 龙岩市海馨汽车有限公司 | Improved generator unit air inlet structure of mobile power trolley |
| CN104454261A (en) * | 2014-12-11 | 2015-03-25 | 无锡同捷汽车设计有限公司 | Air filter of automobile |
| CN113396277A (en) * | 2019-02-14 | 2021-09-14 | 沃尔沃卡车集团 | Filter element for mounting in air cleaner housing of vehicle |
| US12104563B2 (en) | 2019-03-15 | 2024-10-01 | Volvo Truck Corporation | Air cleaner housing for a vehicle |
-
2009
- 2009-07-31 CN CN2009201867333U patent/CN201486706U/en not_active Expired - Lifetime
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102012000806A1 (en) | 2011-02-16 | 2012-08-16 | Mann + Hummel Gmbh | Resonator system for noise reduction of air filter system of gas inlet system of engine of motor vehicle, has housing and insertion part, where housing is designed such that its inner portion is designed as hollow space |
| DE102012000806B4 (en) * | 2011-02-16 | 2017-09-28 | Mann + Hummel Gmbh | resonator |
| CN103590939A (en) * | 2012-08-14 | 2014-02-19 | 重庆长安汽车股份有限公司 | Air filter capable of reducing high frequency noise in engine air inlet |
| CN104121125A (en) * | 2014-07-25 | 2014-10-29 | 龙岩市海馨汽车有限公司 | Improved generator unit air inlet structure of mobile power trolley |
| CN104121125B (en) * | 2014-07-25 | 2018-02-06 | 龙岩市海德馨汽车有限公司 | A kind of mobile power vehicle generating set air inlet structure-improved |
| CN104454261A (en) * | 2014-12-11 | 2015-03-25 | 无锡同捷汽车设计有限公司 | Air filter of automobile |
| CN113396277A (en) * | 2019-02-14 | 2021-09-14 | 沃尔沃卡车集团 | Filter element for mounting in air cleaner housing of vehicle |
| CN113396277B (en) * | 2019-02-14 | 2023-09-01 | 沃尔沃卡车集团 | Filter element for installation in an air cleaner housing of a vehicle |
| US12017174B2 (en) | 2019-02-14 | 2024-06-25 | Volvo Truck Corporation | Filter element for mounting in an air cleaner housing of a vehicle |
| US12104563B2 (en) | 2019-03-15 | 2024-10-01 | Volvo Truck Corporation | Air cleaner housing for a vehicle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20100526 |
|
| CX01 | Expiry of patent term |