CN102748094A - Exhaust silencer for automobile - Google Patents
Exhaust silencer for automobile Download PDFInfo
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- CN102748094A CN102748094A CN2012102473570A CN201210247357A CN102748094A CN 102748094 A CN102748094 A CN 102748094A CN 2012102473570 A CN2012102473570 A CN 2012102473570A CN 201210247357 A CN201210247357 A CN 201210247357A CN 102748094 A CN102748094 A CN 102748094A
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- dividing plate
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- automobile
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Abstract
The invention discloses an exhaust silencer for an automobile, and belongs to the technical field of structural improvement of exhaust silencers for automobiles. The exhaust silencer for the automobile comprises a first partition plate and a second partition plate which are arranged at intervals; two perforated pipes are connected between the first partition plate and the second partition plate, and two ends of each of the two perforated pipes extend to the outer sides of the first partition plate and the second partition plate; a plurality of perforated holes which are distributed uniformly are arranged on the walls of the perforated pipes positioned between the first partition plate and the second partition plate; and two first through holes which are distributed uniformly are arranged on the first partition plate, and two second through holes which are distributed uniformly are arranged on the second partition plate. The exhaust silencer for the automobile is simple in structure and good in silencing effect.
Description
Technical field
The present invention discloses a kind of automobile exhaust muffler, belongs to the technical field of automobile exhaust muffler architecture advances.
Background technique
Along with the raising of industrialization degree, the noise hazard scope enlarges day by day, and the development of the progress of social modernization and automotive industry and transportation makes the owning amount of domestic automobile grow with each passing day.Reform and opening-up is over 20 years, and along with the progressively improvement of development of city and road infrastructure, the various types of vehicles quantity in city sharply rises, and traffic noise pollution is more and more serious, and people's work and health affected are also more and more received publicity.2000, through the road traffic noise in 214 cities is monitored discovery, 8.9% municipal pollution was heavier, and 22.4% city belongs to intermediate pollution, and 53.3% city belongs to slight pollution, had only 15.4% city sound environment quality better.
Noise pollution mainly shows the sense of hearing and the non-sense of hearing two aspects to people's harm.Very noisy hinders the normal talk of people and influences people's normal rest etc., is exposed to for a long time in the strong noise environment, is prone to make the people deafness to occur, these harm that all to be noise contributions cause in people's the sense of hearing; The aspect of the non-sense of hearing then is meant the harm that nervous system, digestive system, respiratory system of noise remote-effects people etc. produced.The harm of noise on human body mainly shows following three aspects:
(1) to the damage of the sense of hearing: a large amount of investigation and research proof, if being among the strong noise environment for a long time, people do not take effective protective measures will cause deafness gradually.Have only noise level below 80 decibels, could the unlikely deafness of guarantor's long-term work.
(2) influence people's physiological health: a large amount of cardiopathic development and deterioration and noise have close getting in touch, and noise can cause the nervous reaction of human body, and adrenaline is increased, thereby cause alteration in heart rate and blood pressure rising.
(3) influence people's psychology: noise is had the fidgets the people, produces sense of fatigue, influence energy and concentrates and working efficiency, owing to the masking effect of noise, often makes the people be difficult for discovering danger signal, thereby causes the accident again.
The main automobile superpower in the world shows showing great attention to and strict day by day control the noise pollution problem one after another like the U.S., Japan, European Union, Korea S etc.Britain has just worked out as far back as nineteen sixty and has prevented the noise method, and the Noise Prevention and Treatment regulations have also been worked out in cities such as USA New York, Chicago, Los Angeles in succession.China is also corresponding to have worked out noise standard, and standard revision in per basically 5 years once, to satisfy the raising of people to environmental requirement.
The car owning amount of China is increasing, and people no longer only are the traffic tool to the requirement of automobile, more require the energy-conserving and environment-protective of car, and are attractive in appearance and comfortable.The traffic noise of motor vehicle is main sources of urban road noise, will be constantly strict to the legislations for noise of automobile.
According to statistics, urban traffic noise is a topmost noise source in the current urban environment noise, accounts for the 50%-75% of entire environment noise energy.Therefore the control key of city noise pollution is to control urban traffic noise.And the main noise source of urban traffic noise is an automobile noise at present, thereby the key of solution city noise pollution is the noise control to automobile.
In the automobile noise, exhaust sound is the main noise source of automobile and motor thereof, and its noise is the high 10-15dB of ratio engine total noise of centrifuge (except the exhaust sound) often.The noise that produces during diesel engine work is mainly by combustion noise, and mechanical noise and aerodynamic noise are formed, and wherein the exhaust sound in the aerodynamic noise is the most outstanding, and reducing exhaust sound the most also is that most important method is to adopt exhaust silencer.In order to eliminate exhaust sound as much as possible, must design high performance silencing apparatus.
Summary of the invention
The purpose of this invention is to provide a kind of simple in structure, effective automobile exhaust muffler of eliminating the noise.
For achieving the above object, the technological scheme that the present invention adopted is:
A kind of automobile exhaust muffler comprises spaced dividing plate one, dividing plate two; Be connected with two perforated pipes between dividing plate one and the dividing plate two, and the two ends of two perforated pipes all extend to the outside of dividing plate one and dividing plate two; On the perforated pipe wall body between dividing plate one and the dividing plate two, offer several equally distributed perforation; Offer two equally distributed through holes one on the dividing plate one, offer two equally distributed through holes two on the dividing plate two.
As the further setting of such scheme, the external diameter of said perforated pipe is 85mm.
The diameter of said perforation is 3mm.
Described dividing plate one, dividing plate two are circular dividing plate.
A kind of exhaust silencer of the present invention, simple in structure, eliminate the noise effective.
Below in conjunction with accompanying drawing and embodiment the present invention is described further.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Embodiment
As shown in Figure 1, a kind of automobile exhaust muffler of the present invention comprises spaced dividing plate 1, dividing plate 26; Be connected with two perforated pipes 4 between dividing plate 1 and the dividing plate 26, and the two ends of two perforated pipes 4 all extend to the outside of dividing plate 1 and dividing plate 26; On perforated pipe 4 wall bodies between dividing plate 1 and the dividing plate 26, offer several equally distributed perforation 7; Offer two equally distributed through holes 1 on the dividing plate 1, offer two equally distributed through holes 29 on the dividing plate 26.
Wherein, the external diameter of perforated pipe 4 is 85mm.The diameter of perforation 7 is 3mm.Dividing plate 1, dividing plate 26 are circular dividing plate.
The propagation process of sound is following among the present invention: sound gets into cavity 1 from suction tude; A part directly is delivered to the cavity 3 from two perforated pipes 4 then; A part is delivered in the cavity 2 through the perforation on the perforated pipe 47; Remainder gets in the cavity 3 through through hole 1, through hole 29 successively, discharges through the steam outlet pipe of silencing apparatus at last.The sound HFS can be effectively eliminated in perforation 7 on the perforated pipe 4; And each two through hole on two dividing plates are because the unexpected variation of both sides sectional area, and sound reflects in middle cavity, thereby reduces passing through of sound, and this mainly reduces the low frequency part of sound.The use of two kinds of structures, thus in the whole interval of high frequency, can both play certain noise elimination effect at low frequency.
The foregoing description only is used to the inventive concept of the present invention of explaining, but not to the qualification of rights protection of the present invention, allly utilizes this design that the present invention is carried out the change of unsubstantiality, all should fall into protection scope of the present invention.
Claims (4)
1. automobile exhaust muffler is characterized in that: comprise spaced dividing plate one, dividing plate two; Be connected with two perforated pipes between dividing plate one and the dividing plate two, and the two ends of two perforated pipes all extend to the outside of dividing plate one and dividing plate two; On the perforated pipe wall body between dividing plate one and the dividing plate two, offer several equally distributed perforation; Offer two equally distributed through holes one on the dividing plate one, offer two equally distributed through holes two on the dividing plate two.
2. a kind of automobile exhaust muffler as claimed in claim 1 is characterized in that: the external diameter of said perforated pipe is 85mm.
3. a kind of automobile exhaust muffler as claimed in claim 1 is characterized in that: the diameter of said perforation is 3mm.
4. a kind of automobile exhaust muffler as claimed in claim 1 is characterized in that: described dividing plate one, dividing plate two are circular dividing plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102473570A CN102748094A (en) | 2012-07-18 | 2012-07-18 | Exhaust silencer for automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102473570A CN102748094A (en) | 2012-07-18 | 2012-07-18 | Exhaust silencer for automobile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102748094A true CN102748094A (en) | 2012-10-24 |
Family
ID=47028544
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012102473570A Pending CN102748094A (en) | 2012-07-18 | 2012-07-18 | Exhaust silencer for automobile |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102748094A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105863785A (en) * | 2016-05-23 | 2016-08-17 | 浙江创格科技有限公司 | Exhaust silencer |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2380690Y (en) * | 1999-07-30 | 2000-05-31 | 王浩国 | Silencer |
| WO2001065077A1 (en) * | 1998-03-05 | 2001-09-07 | Arvinmeritor, Inc. | Stamp-formed muffler |
| CN201687551U (en) * | 2010-06-01 | 2010-12-29 | 安徽江淮汽车股份有限公司 | Heavy truck muffler |
| CN201714459U (en) * | 2010-05-28 | 2011-01-19 | 浙江大学 | Automobile exhaust silencer |
| CN201891468U (en) * | 2010-11-17 | 2011-07-06 | 郑州精益达汽车零部件有限公司 | Automobile impedance composite muffler with inner heat insulation |
| CN202659308U (en) * | 2012-07-18 | 2013-01-09 | 绍兴文理学院 | Automobile exhaust muffler |
-
2012
- 2012-07-18 CN CN2012102473570A patent/CN102748094A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001065077A1 (en) * | 1998-03-05 | 2001-09-07 | Arvinmeritor, Inc. | Stamp-formed muffler |
| CN2380690Y (en) * | 1999-07-30 | 2000-05-31 | 王浩国 | Silencer |
| CN201714459U (en) * | 2010-05-28 | 2011-01-19 | 浙江大学 | Automobile exhaust silencer |
| CN201687551U (en) * | 2010-06-01 | 2010-12-29 | 安徽江淮汽车股份有限公司 | Heavy truck muffler |
| CN201891468U (en) * | 2010-11-17 | 2011-07-06 | 郑州精益达汽车零部件有限公司 | Automobile impedance composite muffler with inner heat insulation |
| CN202659308U (en) * | 2012-07-18 | 2013-01-09 | 绍兴文理学院 | Automobile exhaust muffler |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105863785A (en) * | 2016-05-23 | 2016-08-17 | 浙江创格科技有限公司 | Exhaust silencer |
| CN105863785B (en) * | 2016-05-23 | 2018-10-30 | 浙江创格科技有限公司 | A kind of muffler |
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| C06 | Publication | ||
| PB01 | Publication | ||
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| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20121024 |