CN203020405U - Automobile engine room - Google Patents
Automobile engine room Download PDFInfo
- Publication number
- CN203020405U CN203020405U CN 201220567920 CN201220567920U CN203020405U CN 203020405 U CN203020405 U CN 203020405U CN 201220567920 CN201220567920 CN 201220567920 CN 201220567920 U CN201220567920 U CN 201220567920U CN 203020405 U CN203020405 U CN 203020405U
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- layer
- interlayer
- automobile engine
- auxiliary layer
- engine room
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Abstract
The utility model provides an automobile engine room and belongs to the technical field of automobiles. The technical problem that the existing automobile engine rooms are bad in effect of sound insulation and heat insulation is solved. The automobile engine room comprises an engine room cover and a front wall plate, wherein the front wall plate is used for separating an engine room and a cab. Inter-layers with function of the heat insulation and sound absorption are respectively arranged on the inner wall of the engine room cover and the inner wall of the front wall plate, wherein the front wall plate is located inside the engine room. Auxiliary layers with the function of the heat insulation and the sound absorption equally are further arranged on the inter-layers. The inter-layers and the auxiliary layers are fitted. The inter-layers and the auxiliary layers are fixed on the inner wall of the engine room cover or the inner wall of the front wall plate inside the engine room through connecting components. The automobile engine room has the advantages of being good in effect of the sound insulation and the heat insulation.
Description
Technical field
The utility model belongs to automobile technical field, relates to a kind of automobile engine nacelle.
Background technology
Along with the development of science and technology and the raising of people's living standard, automobile has been come into huge numbers of families, becomes the topmost vehicle of people's go off daily.The noise of automobile (Noise), vibration (Vibration), sound vibration roughness (Harshness) are referred to as the NVH characteristic of automobile, are key factors weighing automobile design and build guality.Each large car load manufacturing enterprise of World Automobile Industry and parts enterprises are paid much attention to the auto NVH performance, and the NVH performance also becomes the important counterweight of the various brands vehicle market competitiveness.
The NVH performance of car load can promote by ACTIVE CONTROL and Passive Control dual mode, and ACTIVE CONTROL is namely controlled from the noise source, comprises and improves each parts machining precision and assembly quality, improves engine structure, improves body structure etc.; Passive Control is from the Body Control angle, to car noise source, soruce of vibration absorb sound, absorbing, sound insulation, vibration damping etc.Vibration noise source as Automobile Maximum, driving engine is very large on the impact of car load NVH performance, the applied acoustics material carries out sound absorption to motor noise to be processed, a kind of actv. approach for reducing the car load noise, therefore, the acoustics spare of a kind of acoustic efficiency excellence of development and environmental protection is significant.
The automobile of more existing higher gears is provided with the heat insulation and acoustic absorption structure engine noise is carried out the sound absorption and insulation processing on the inwall of machinery space, the heat insulation and acoustic absorption structure of traditional automobile engine nacelle is single layer structure, the surface is with nonwoven fabrics, and material category is take regenerated fibre or glass fibre as main.There is again Chinese patent literature to disclose a kind of automobile engine nacelle sound deadening heat insulation pad [Granted publication number: CN201989367U; Application number: 20110057922.8], this sound deadening heat insulation pad consists of by trilaminate material is compound, and it is aluminium foil layer at the middle and upper levels, and the middle level is that semi-solid preparation is cotton, and lower floor is nonwoven layer.Such a automobile engine nacelle is not all very desirable for sound absorption, the defening effect of engine noise, causes the interior noise of car larger, is unfavorable for promoting class and the travelling comfort of automobile.In addition, such a automobile engine nacelle also has the poor shortcoming of effect of heat insulation.In summer, engine temperature is higher, and the fan side has many hot blasts can blow to machinery space to cover, cause the engine compartment cover temperature very high, cause " baking vanish " phenomenon, rain if remove carwash this moment or meet with, the temperature difference is too large so, can the lacquer painting of engine compartment cover be damaged.In addition, when on coaming plate, effect of heat insulation was bad before machinery space, the heat of driving engine also can more be delivered in operator's compartment, caused the operator's compartment temperature higher or reduce the refrigeration of air-conditioning.
Summary of the invention
The purpose of this utility model is to have the problems referred to above for existing technology, has proposed a kind of automobile engine nacelle of heat insulation and acoustic absorption performance preferably that has.
the purpose of this utility model can realize by following technical proposal: a kind of automobile engine nacelle, comprise engine compartment cover and be used for separating the front coaming plate of machinery space and operator's compartment, it is characterized in that, on the inwall of engine compartment cover and be positioned at and be respectively equipped with on the front coaming plate inwall of machinery space with heat insulation and interlayer sound absorption, also be provided with on interlayer and have equally heat insulation and auxiliary layer sound absorption, described interlayer and auxiliary layer fit, both are fixed on the inwall of above-mentioned engine compartment cover or on the front coaming plate inwall in machinery space with it by connecting element for described interlayer and auxiliary layer.
Interlayer and auxiliary layer all have good effect of heat insulation, simultaneously interlayer and auxiliary layer combined action, and the high-frequency noises that produces in the time of can be respectively pointedly to engine operation and the noise of medium and low frequency absorb, and the soundproof effect of machinery space is promoted greatly.Simultaneously, because the grammes per square metre of interlayer material and auxiliary layer material is different with density, make to have formed density gradient between the two, increased the difficulty of sound wave by both, also make this machinery space have better sound insulation value from this angle.
In above-mentioned automobile engine nacelle, the outside face of described auxiliary layer is provided with aluminium foil layer, described interlayer, auxiliary layer and described laminate aluminium foil are combined and pass interlayer, auxiliary layer and described aluminium foil layer and the three is fixed on the inwall of engine compartment cover by above-mentioned fixing piece, and are positioned on the front wall wooden partition of machinery space.The use of aluminium foil layer has promoted the aging resistance of interlayer and auxiliary layer, thereby has protected interlayer and auxiliary layer, makes it have longer service life and more superior heat insulation and acoustic absorption performance.
In above-mentioned automobile engine nacelle, the outside face of described auxiliary layer is provided with nonwoven layer, described interlayer, auxiliary layer and described nonwoven layer are superimposed together and pass interlayer, auxiliary layer and described nonwoven layer and the three is fixed on the inwall of engine compartment cover by above-mentioned fixing piece, and are positioned on the front wall wooden partition of machinery space.
In above-mentioned automobile engine nacelle, described connecting element is screw.Certainly, also can replace screw to be fixed with parts such as buckle, locating dowel pins.
In above-mentioned automobile engine nacelle, described interlayer is PP and PET composite fibre layer.PP is the abbreviation of polypropylene (Polypropylene), and PET is the abbreviation of polyethylene terephthalate (polyethylene terephthalate).PP and PET complex fiber material are current material, as " plastics " just the 03rd interim name that records in 2011 is called the scientific and technical literature of " structure and the performance of increase-volume PP/ waste PET fabric fibre composite material ".Simultaneously, there have been many companies (as " Shenyang sunlight chemical fibre trade Co., Ltd ") that the PP of sale and PET composition fiber are arranged on market.PP and PET complex fiber material have excellent heat-proof quality, can normally use under the hot environment of 180 ℃, have therefore also improved resistance to effect of heat when promoting sound absorbing capabilities.The high-frequency noises that PP and PET composite fibre layer produce during for engine operation has obvious sound absorption.
In above-mentioned automobile engine nacelle, described auxiliary layer is the low-density polyurethane layer.The noise frequency characteristic of driving engine is mainly the noise of medium and low frequency, the low-density polyurethane layer has stronger absorption power for the noise of medium and low frequency, so the design of low-density polyurethane layer has well improved the conventional engines cabin for the relatively poor shortcoming of Middle and low frequency noise absorption power.
In above-mentioned automobile engine nacelle, the thickness of described low-density polyurethane layer is 8mm～10mm.
In above-mentioned automobile engine nacelle, the thickness of described aluminium foil layer is 0.4mm～0.8mm.
Compared with prior art, this automobile engine nacelle has the following advantages:
1, the utility model adopts the material of different acoustics and physicochemical property effect, science, reasonably carries out structure optimization, makes its acoustics effect obtain the performance of larger limit.
2, the surface of low-density polyurethane layer is provided with aluminium foil layer, aluminium foil layer has promoted the aging resistance of PP and PET composite fibre layer and low-density polyurethane layer, so PP and PET composite fibre layer and low-density polyurethane layer have longer service life and more superior heat insulation and acoustic absorption performance.
The medium high frequency noise and the medium and low frequency noise that produce when 3, the PP that uses of the utility model and PET composite fibre layer and low-density polyurethane layer can absorb engine operation have respectively well fundamentally promoted sound insulation, the sound absorbing capabilities of machinery space.
4, due to PP and PET complex fiber material and low-density polyurethane density lighter, therefore also help the light-weight design of this automobile engine nacelle.
Description of drawings
Fig. 1 is structural representation of the present utility model.
In figure, 1, machinery space; 2, interlayer; 3, auxiliary layer; 4, aluminium foil layer; 5, screw.
The specific embodiment
Be below specific embodiment of the utility model and by reference to the accompanying drawings, the technical solution of the utility model is further described, but the utility model be not limited to these embodiment.
Embodiment one
As shown in Figure 1, this automobile engine nacelle comprises engine compartment cover and is used for separating the front coaming plate of machinery space 1 and operator's compartment, on the inwall of engine compartment cover and be positioned at and be respectively equipped with on the front coaming plate inwall of machinery space 1 with heat insulation and interlayer 2 sound absorption, also be provided with on interlayer 2 and have equally heat insulation and auxiliary layer 3 sound absorption, interlayer 2 and auxiliary layer 3 fit, and both are fixed on the inwall of engine compartment cover or on the front coaming plate inwall in machinery space 1 with it by connecting element for interlayer 2 and auxiliary layer 3.As preferably, connecting element is screw 5, and certainly, connecting element also can be selected buckle, locating dowel pin etc.In order to promote the resistance to heat of interlayer 2 and auxiliary layer 3, protection interlayer 2 and auxiliary layer 3 are not subjected to high temperature ageing, are provided with aluminium foil layer 4 at the outside face of auxiliary layer 3.Interlayer 2 and auxiliary layer 3 and aluminium foil layer 4 are superimposed together and pass interlayer 2 and auxiliary layer 3 and aluminium foil layer 4 and the three is fixed on the inwall of engine compartment cover by screw 5, and are positioned on the front wall wooden partition of machinery space 1.As preferably, interlayer 2 is for being PP and PET composite fibre layer, and auxiliary layer 3 is the low-density polyurethane layer.PP and PET composition fiber and low-density polyurethane are current material, can directly buy on market.Wherein PP and PET composition fiber are by existing technique, are formed by polypropylene fibre and polyster fibre blending manufacturing, are comprised of superfine fibre, have solid netted continuous poriferous structure, and the fiber average fineness can reach below 1～2 micron.Due to PP and the special material internal structure of PET composition fiber, more be conducive to the consumption of acoustic wave energy, to compare with glass fiber material with common regenerated fibre, its acoustically effective is more excellent.In addition, the density of PP and PET composition fiber itself is very little, and the grammes per square metre of material is 300g/m
2～600g/m
2, so the light-weight design of favourable machinery space 1.The high-frequency noises that PP and PET composite fibre layer produce during for engine operation has obvious sound absorption, therefore can give the sound absorbing capabilities of whole acoustics spare excellence.
The skin of PP and PET composite fibre layer is the low-density polyurethane layer, and its thickness is 9mm, and its thickness can also be chosen as 8mm～10mm in the Practical manufacturing process.Same, the low-density polyurethane material has also had density lower, and its density is only 15kg/m
3, being lighter than traditional lamination coating, the grammes per square metre of 22mm material is 400g/m
2The left and right, the grammes per square metre of the lamination coating of same thickness is at 600g/m
2～800g/m
2The aluminium foil of minute aperture is contained in the inside of material in addition, when promoting the material heat-proof quality, material is strengthened for the absorption power of Middle and low frequency noise, be that the obvious feature of medium and low frequency conforms to the motor noise frequency-response data, improved the relatively poor shortcoming of traditional fibre material Middle and low frequency noise absorption power.In addition, low-density polyurethane material material has flame resistance, does not contain glass, not chafe, and environmental protection.
The aluminium foil layer 4 of the skin of low-density polyurethane layer for being consisted of by the metal aluminum foil material, thickness is 0.6mm, its thickness can also be chosen as 0.4mm～0.8mm in the Practical manufacturing process, the heat-proof quality of metal aluminum foil material is excellent, so aluminium foil layer 4 can guarantee its stable performance of lower two layers material sound absorbing capabilities under hot environment.When aluminium foil layer 4 is arranged at the inwall of engine compartment cover, adopt the porous aluminum foil material, hole density is 75/cm
2～100/cm
2, the porous aluminum foil material has further strengthened sound absorbing capabilities.In the time of on front wall wooden partition in aluminium foil layer 4 is arranged at machinery space 1, aluminium foil layer 4 adopts the atresia aluminium foil, and the compactness of material itself can increase sound insulation property to a certain extent, and the driving engine biography is effectively intercepted to the noise in car.PP and PET composite fibre layer on this machinery space 1, low-density polyurethane layer are different with density with the grammes per square metre of aluminium foil layer 4 layers of materials, make integral body form density gradient, increased the difficulty of sound wave by machinery space 1, also made it have more excellent acoustic efficiency from this angle.
Embodiment two
The present embodiment is basic identical with structure and the principle of embodiment one, different place is: a surface of PP and PET composite fibre layer is bonded in the inwall of engine compartment cover, and be positioned on the front wall wooden partition of machinery space 1, another surface is bonding with the low-density polyurethane layer, and aluminium foil layer 4 hot pressing are compounded on the outside face of low-density polyurethane layer.
Embodiment three
The present embodiment is basic identical with structure and the principle of embodiment one and embodiment two, and different place is: aluminium foil layer 4 can adopt nonwoven layer to replace, and namely the outside face at the low-density polyurethane layer is provided with a nonwoven layer.
Specific embodiment described herein is only to the explanation for example of the utility model spirit.The utility model person of ordinary skill in the field can make various modifications or replenishes or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present utility model or surmount the defined scope of appended claims.
Although this paper has more used the terms such as machinery space 1, PP and PET composite fibre layer, low-density polyurethane layer, aluminium foil layer 4, nonwoven layer 5, do not get rid of the possibility of using other term.Using these terms is only in order to describe more easily and explain essence of the present utility model; They are construed to any additional restriction is all contrary with the utility model spirit.
Claims (8)
1. automobile engine nacelle, comprise engine compartment cover and be used for separating the front coaming plate of machinery space (1) and operator's compartment, it is characterized in that, on the inwall of engine compartment cover and be positioned at and be respectively equipped with on the front coaming plate inwall of machinery space (1) with heat insulation and interlayer (2) sound absorption, also be provided with on interlayer (2) and have equally heat insulation and auxiliary layer (3) sound absorption, described interlayer (2) and auxiliary layer (3) fit, both are fixed on the inwall of above-mentioned engine compartment cover or on the front coaming plate inwall in machinery space (1) with it by connecting element for described interlayer (2) and auxiliary layer (3).
2. automobile engine nacelle according to claim 1, it is characterized in that, the outside face of described auxiliary layer (3) is provided with aluminium foil layer (4), described interlayer (2), auxiliary layer (3) and described aluminium foil layer (4) are superimposed together and pass interlayer (2), auxiliary layer (3) and described aluminium foil layer (4) and the three is fixed on the inwall of engine compartment cover by above-mentioned connecting element, and are positioned on the front wall wooden partition of machinery space (1).
3. automobile engine nacelle according to claim 1, it is characterized in that, the outside face of described auxiliary layer (3) is provided with nonwoven layer, described interlayer (2), auxiliary layer (3) and described nonwoven layer is superimposed together and pass interlayer (2), auxiliary layer (3) and described nonwoven layer and the three is fixed on the inwall of engine compartment cover by above-mentioned connecting element, and be positioned on the front wall wooden partition of machinery space (1).
4. according to claim 1 and 2 or 3 described automobile engine nacelles, is characterized in that, described connecting element is screw (5).
5. according to claim 1 and 2 or 3 described automobile engine nacelles, is characterized in that, described interlayer (2) is the PP+PET fibrage.
6. according to claim 1 and 2 or 3 described automobile engine nacelles, is characterized in that, described auxiliary layer (3) is the low-density polyurethane layer.
7. automobile engine nacelle according to claim 6, is characterized in that, the thickness of described low-density polyurethane layer is 8mm～10mm.
8. automobile engine nacelle according to claim 2, is characterized in that, the thickness of described aluminium foil layer is 0.4mm～0.8mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220567920 CN203020405U (en) | 2012-10-31 | 2012-10-31 | Automobile engine room |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220567920 CN203020405U (en) | 2012-10-31 | 2012-10-31 | Automobile engine room |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203020405U true CN203020405U (en) | 2013-06-26 |
Family
ID=48644406
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220567920 Expired - Fee Related CN203020405U (en) | 2012-10-31 | 2012-10-31 | Automobile engine room |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203020405U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106394429A (en) * | 2015-07-31 | 2017-02-15 | 镇江立达纤维工业有限责任公司 | A middle-sized heavy-duty commercial vehicle cab heat insulation pad |
| CN108070105A (en) * | 2016-11-15 | 2018-05-25 | 福特全球技术公司 | For the local siloxanes heat shielding of front wall extension board |
| CN109849469A (en) * | 2017-11-30 | 2019-06-07 | 上海新安汽车隔音毡有限公司 | A kind of motor in electric automobile sound insulating pad and preparation method thereof |
-
2012
- 2012-10-31 CN CN 201220567920 patent/CN203020405U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106394429A (en) * | 2015-07-31 | 2017-02-15 | 镇江立达纤维工业有限责任公司 | A middle-sized heavy-duty commercial vehicle cab heat insulation pad |
| CN108070105A (en) * | 2016-11-15 | 2018-05-25 | 福特全球技术公司 | For the local siloxanes heat shielding of front wall extension board |
| CN108070105B (en) * | 2016-11-15 | 2022-05-24 | 福特全球技术公司 | Partial silicone heat shield for dash-panel extension panels |
| CN109849469A (en) * | 2017-11-30 | 2019-06-07 | 上海新安汽车隔音毡有限公司 | A kind of motor in electric automobile sound insulating pad and preparation method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130626 Termination date: 20201031 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |