CN103318106A - Method and device for passenger car engine sound insulation and noise reduction - Google Patents
Method and device for passenger car engine sound insulation and noise reduction Download PDFInfo
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- CN103318106A CN103318106A CN2013102668925A CN201310266892A CN103318106A CN 103318106 A CN103318106 A CN 103318106A CN 2013102668925 A CN2013102668925 A CN 2013102668925A CN 201310266892 A CN201310266892 A CN 201310266892A CN 103318106 A CN103318106 A CN 103318106A
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- car bonnet
- car
- noise
- engine
- passenger car
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Abstract
The invention discloses a method and a device for passenger car engine sound insulation and noise reduction. An engine hood is arranged in a car body of a passenger car, the portion, in the car body of the passenger car, of the engine hood is enabled to be totally enclosed to enable the engine and the inside of the car body of the passenger car to be isolated from each other, and sound insulation foam materials are arranged in the engine hood so as to reduce noise of the engine of the passenger car. By the method and the device, influences on the interior of the passenger car caused by noise produced by the engine of the passenger car can reduced effectively, tests on Wanda minibuses prove that noise nearby a driver is reduced by more than 2dB, the engine hood is integrally of a glass fiber reinforced plastic structure, weight of the engine hood is not increased on the condition of not increasing sealing stripes and the sound insulation foam materials. The method and the device are particularly suitable for front-engine passenger cars.
Description
Technical field
The present invention relates to mechanical field, particularly a kind of bus engine sound-proof noise reducing method and device.
Background technology
Flourish along with Domestic Automotive Industry, automobile pollution increases sharply in recent years, and the car noise problem is more and more outstanding, has become topmost noise source in the city environment.Internal car noise mainly comes from driving engine, and too high noise both can damage the hearing of chaufeur, also can make the chaufeur fast fatiguing, thereby the safety traffic of automobile has been constituted very big threat, and greatly reduces passenger's travelling comfort.The noisiness of automobile is to weigh the important indicator of car mass, in order to control car noise to the influence of surrounding environment, reduce the injury that people are subjected to car noise to greatest extent, there is strict regulation the home and abroad to car noise, and formulated relevant rules, standard, in the hope of effectively controlling car noise to the influence of environment.
Summary of the invention
Technical matters to be solved by this invention is: a kind of bus engine sound-proof noise reducing method and device are provided, and it can effectively reduce the noise that interior of body causes owing to engine operation, to overcome the deficiencies in the prior art.
The bus engine sound-proof noise reducing method that is achieved in that of the present invention, a car bonnet is set in the car body of passenger vehicle, make car bonnet that driving engine is in part complete closed in the passenger car body, make the car body of driving engine and passenger vehicle inner isolated mutually, and noise deadening foam is set, thereby reduce therefore its noise of bus engine in car bonnet.
The device of bus engine sound-proof noise reducing method, comprise car bonnet, top and the bottom of car bonnet are uncovered, be provided with the car bonnet cover plate at the top of car bonnet, be connected by hinge between car bonnet and the car bonnet cover plate, be provided with sound isolating layer in the inboard of car bonnet and car bonnet cover plate; Be provided with buckle at the car bonnet cover plate, be provided with the projection corresponding with snapped-in position at car bonnet.
Bottom at car bonnet is provided with packing seal; Binding site place at car bonnet cover plate and car bonnet is provided with sealing band.Improve the sealing effectiveness between car bonnet cover plate and the car bonnet, strengthen deadening
Inboard at sound isolating layer is provided with blind hole.Improve the attraction effect of sound isolating layer.
The aperture of blind hole is not more than 20mm, and the width between centers between two blind holes is not more than 30mm, and the dark of blind hole is 10mm ~ 35mm.In this range of sizes, can better bring into play the attraction effect of sound isolating layer.
Owing to adopted technique scheme, compared with prior art, the driving engine that the present invention can effectively reduce passenger vehicle produces noise to the influence in the car, by doing experiment at Wanda's minibus, more than the noise decline 2dB, the whole glass fibre reinforced plastic structure that adopts of car bonnet is under the situation that increases sealing band and noise deadening foam near the chaufeur, do not increase the quality of car bonnet, can effectively reduce driving engine simultaneously and produce noise to the influence in the car.Be specially adapted to the courteous of engine behind front wheel formula.The present invention is simple in structure, and is with low cost, and practical reliable, result of use is good.
Description of drawings
Accompanying drawing 1 is structural representation of the present invention.
The specific embodiment
Embodiments of the invention: bus engine sound-proof noise reducing method, a car bonnet is set in the car body of passenger vehicle, make car bonnet that driving engine is in part complete closed in the passenger car body, make the car body of driving engine and passenger vehicle inner isolated mutually, and noise deadening foam is set, thereby reduce therefore its noise of bus engine in car bonnet.
The structure of the device of bus engine sound-proof noise reducing method as shown in Figure 1, comprise car bonnet 2, top and the bottom of car bonnet 2 are uncovered, be provided with car bonnet cover plate 1 at the top of car bonnet 2, be connected by hinge 8 between car bonnet 2 and the car bonnet cover plate 1, be provided with sound isolating layer 6 in the inboard of car bonnet 2 and car bonnet cover plate 1; Be provided with buckle 9 at car bonnet cover plate 1, be provided with the projection 4 corresponding with buckle 9 positions at car bonnet 2; Be provided with packing seal 3 in the bottom of car bonnet 2; Binding site place at car bonnet cover plate 1 and car bonnet 2 is provided with sealing band 5; Be provided with blind hole 7 in the inboard of sound isolating layer 6; The aperture of blind hole 7 is not more than 20mm, and the width between centers between two blind holes 7 is not more than 30mm, and the dark of blind hole 7 is 10mm ~ 35mm.
When mounted, with being trapped among outside the bus engine of car bonnet 2, and the bottom of car bonnet 2 is fixed on the floor 10 of passenger vehicle, car bonnet cover plate 1 upset is covered car bonnet 2, and buckle 9 buckled in the projection 4 get final product.
Claims (5)
1. bus engine sound-proof noise reducing method, it is characterized in that: a car bonnet is set in the car body of passenger vehicle, make car bonnet that driving engine is in part complete closed in the passenger car body, make the car body of driving engine and passenger vehicle inner isolated mutually, and noise deadening foam is set, thereby reduce therefore its noise of bus engine in car bonnet.
2. device that adopts bus engine sound-proof noise reducing method as claimed in claim 1, comprise car bonnet (2), it is characterized in that: top and the bottom of car bonnet (2) are uncovered, be provided with car bonnet cover plate (1) at the top of car bonnet (2), be connected by hinge (8) between car bonnet (2) and the car bonnet cover plate (1), be provided with sound isolating layer (6) in the inboard of car bonnet (2) and car bonnet cover plate (1); Be provided with buckle (9) at car bonnet cover plate (1), be provided with the projection (4) corresponding with buckle (9) position at car bonnet (2).
3. bus engine sound insulation and noise reduction device according to claim 2 is characterized in that: be provided with packing seal (3) in the bottom of car bonnet (2); Binding site place at car bonnet cover plate (1) and car bonnet (2) is provided with sealing band (5).
4. bus engine sound insulation and noise reduction device according to claim 2 is characterized in that: be provided with blind hole (7) in the inboard of sound isolating layer (6).
5. bus engine sound insulation and noise reduction device according to claim 4, it is characterized in that: the aperture of blind hole (7) is not more than 20mm, and the width between centers between two blind holes (7) is not more than 30mm, and the dark of blind hole (7) is 10mm ~ 35mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013102668925A CN103318106A (en) | 2013-06-29 | 2013-06-29 | Method and device for passenger car engine sound insulation and noise reduction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013102668925A CN103318106A (en) | 2013-06-29 | 2013-06-29 | Method and device for passenger car engine sound insulation and noise reduction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103318106A true CN103318106A (en) | 2013-09-25 |
Family
ID=49187255
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013102668925A Pending CN103318106A (en) | 2013-06-29 | 2013-06-29 | Method and device for passenger car engine sound insulation and noise reduction |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103318106A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104131899A (en) * | 2014-07-22 | 2014-11-05 | 柳州柳工挖掘机有限公司 | Engine hood |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040180978A1 (en) * | 2003-03-13 | 2004-09-16 | Thorsten Dreier | Soundproofing and thermally insulating structural element |
| CN201023533Y (en) * | 2007-02-15 | 2008-02-20 | 东风汽车有限公司 | Passenger car engine hood |
| CN201689671U (en) * | 2010-06-08 | 2010-12-29 | 东北大学 | Foamed aluminum sound absorbing plate |
| CN202358185U (en) * | 2011-12-01 | 2012-08-01 | 东风汽车有限公司 | Passenger car engine hood |
| CN203294026U (en) * | 2013-06-06 | 2013-11-20 | 奇瑞万达贵州客车股份有限公司 | Passenger car engine blimp |
-
2013
- 2013-06-29 CN CN2013102668925A patent/CN103318106A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040180978A1 (en) * | 2003-03-13 | 2004-09-16 | Thorsten Dreier | Soundproofing and thermally insulating structural element |
| CN201023533Y (en) * | 2007-02-15 | 2008-02-20 | 东风汽车有限公司 | Passenger car engine hood |
| CN201689671U (en) * | 2010-06-08 | 2010-12-29 | 东北大学 | Foamed aluminum sound absorbing plate |
| CN202358185U (en) * | 2011-12-01 | 2012-08-01 | 东风汽车有限公司 | Passenger car engine hood |
| CN203294026U (en) * | 2013-06-06 | 2013-11-20 | 奇瑞万达贵州客车股份有限公司 | Passenger car engine blimp |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104131899A (en) * | 2014-07-22 | 2014-11-05 | 柳州柳工挖掘机有限公司 | Engine hood |
| CN104131899B (en) * | 2014-07-22 | 2016-08-31 | 柳州柳工挖掘机有限公司 | Hood |
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Application publication date: 20130925 |