CN221023537U - Engine noise reduction device and vehicle - Google Patents
Engine noise reduction device and vehicle Download PDFInfo
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- CN221023537U CN221023537U CN202322581403.7U CN202322581403U CN221023537U CN 221023537 U CN221023537 U CN 221023537U CN 202322581403 U CN202322581403 U CN 202322581403U CN 221023537 U CN221023537 U CN 221023537U
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- noise reduction
- engine
- guard plate
- vehicle
- reduction device
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- 230000009467 reduction Effects 0.000 title claims abstract description 61
- 230000000712 assembly Effects 0.000 claims abstract description 8
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- 229920000742 Cotton Polymers 0.000 claims description 11
- 238000010521 absorption reaction Methods 0.000 claims description 8
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 8
- 229910052782 aluminium Inorganic materials 0.000 claims description 8
- 239000011888 foil Substances 0.000 claims description 8
- 229910001220 stainless steel Inorganic materials 0.000 claims description 7
- 239000010935 stainless steel Substances 0.000 claims description 7
- 239000003638 chemical reducing agent Substances 0.000 claims description 3
- 230000007704 transition Effects 0.000 claims description 3
- 238000000748 compression moulding Methods 0.000 claims description 2
- 229920002430 Fibre-reinforced plastic Polymers 0.000 claims 1
- 239000003365 glass fiber Substances 0.000 claims 1
- 230000005540 biological transmission Effects 0.000 abstract description 3
- 230000002093 peripheral effect Effects 0.000 abstract description 3
- 239000004576 sand Substances 0.000 abstract description 3
- 238000005406 washing Methods 0.000 abstract description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 3
- 230000003116 impacting effect Effects 0.000 abstract description 2
- 239000010410 layer Substances 0.000 description 21
- 230000006872 improvement Effects 0.000 description 8
- 238000009434 installation Methods 0.000 description 3
- 229920000297 Rayon Polymers 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000007731 hot pressing Methods 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 230000007480 spreading Effects 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
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- Body Structure For Vehicles (AREA)
Abstract
The utility model discloses an engine noise reduction device and a vehicle, which comprise an engine and noise reduction assemblies symmetrically arranged on two sides of the engine, wherein the noise reduction assemblies comprise noise reduction guard plates and guard plate supports, and the noise reduction guard plates are fixed on frame longitudinal beams through the guard plate supports. The engine noise reduction device is simple in structure and low in cost, can effectively absorb and block the transmission of engine noise to two sides, reduces noise outside a vehicle, and improves NVH performance of the vehicle; meanwhile, the water gun can be prevented from being scoured during car washing, peripheral electrical components of the engine and the plug wire harness are protected, and hard objects such as sand and the like are protected from impacting the engine during car running.
Description
Technical Field
The utility model relates to an engine noise reduction device and a vehicle, and belongs to the field of vehicle equipment.
Background
Engine noise is used as a main noise source when the automobile is accelerated, and whether the automobile can meet the limit value regulated by GB1495 is determined to a great extent. At present, most enterprises do not pay attention to noise outside the vehicle, so that noise reduction treatment is not usually carried out on two sides of an engine, or only a common single-layer noise reduction guard plate is arranged, and the noise absorption and insulation effects are poor. Therefore, how to reduce noise to meet the national standard limit value is an urgent problem to be solved by enterprises at present.
Disclosure of Invention
Aiming at the problems in the prior art, the utility model provides the engine noise reduction device and the vehicle, which can effectively reduce the engine noise when the automobile normally runs or runs at an accelerated speed, meet the national standard limit value requirement, improve the NVH level of the whole vehicle and reduce the noise pollution.
In order to achieve the above purpose, the engine noise reduction device comprises an engine and noise reduction assemblies symmetrically arranged on two sides of the engine, wherein the noise reduction assemblies comprise noise reduction guard plates and guard plate supports, and the noise reduction guard plates are fixed on frame longitudinal beams through the guard plate supports.
As an improvement, the noise reduction guard plate comprises a glass fiber reinforced plastic layer, a sound absorption cotton layer and an aluminum foil layer, wherein the sound absorption cotton layer is arranged on the upper surface of the glass fiber reinforced plastic layer, and the aluminum foil layer is arranged on the upper surface of the sound absorption cotton layer.
As a further improvement, the noise reduction guard plate further comprises a stainless steel bushing, and the stainless steel bushing is embedded in the glass fiber reinforced plastic layer.
The improved guard board support comprises a guard board support I and a guard board support II, and the noise reduction guard board is fixed on the frame longitudinal beam through the installation bolts by the guard board support I and the guard board support II.
As an improvement, the noise reduction assembly is positioned between the lower periphery of the cab and the upper wing surface of the frame.
As an improvement, the noise reduction guard plate is formed by compression molding and adopts a streamline transition structure.
Finally, the utility model also provides a vehicle, and the engine noise reduction device is arranged on the vehicle.
Compared with the prior art, the engine noise reduction device is simple in structure and low in cost, can effectively absorb and block the transmission of engine noise to two sides, reduces noise outside a vehicle, and improves NVH performance of the vehicle; meanwhile, the water gun can be prevented from being scoured during car washing, peripheral electrical components of the engine and the plug wire harness are protected, and hard objects such as sand and the like are protected from impacting the engine during car running.
In addition, compared with a vehicle without the noise reducer, when the vehicle with the noise reducer is in acceleration running, the noise of the outside of the vehicle is reduced by 2-3dB (A), and the requirements of the three-stage noise limit of GB1495 to be implemented can be met.
Drawings
FIG. 1 is a schematic diagram of the structure of the present utility model;
FIG. 2 is a schematic diagram of a noise reduction assembly of the present utility model;
FIG. 3 is a front view of the noise reduction assembly of the present utility model;
FIG. 4 is an enlarged view of a portion of FIG. 3 at A;
In the figure: 1. the engine comprises an engine, 2 parts of noise reduction guard plates, 2-1 parts of glass fiber reinforced plastic layers, 2-2 parts of sound absorption cotton layers, 2-3 parts of aluminum foil layers, 2-4 parts of stainless steel bushings, 3 parts of guard plate supports I, 4 parts of frame longitudinal beams, 5 parts of guard plate supports II, 6 parts of mounting bolts.
Detailed Description
The present utility model will be described in further detail below in order to make the objects, technical solutions and advantages of the present utility model more apparent. It should be understood that the detailed description and specific examples, while indicating the utility model, are intended for purposes of illustration only and are not intended to limit the scope of the utility model.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs, and the terms used herein in this description of the utility model are for the purpose of describing particular embodiments only and are not intended to be limiting of the utility model.
As shown in fig. 1 and 2, the noise reduction device for the engine comprises the engine 1 and further comprises noise reduction assemblies symmetrically arranged on two sides of the engine 1, wherein the noise reduction assemblies comprise noise reduction guard plates 2 and guard plate supports, and the noise reduction guard plates 2 are fixed on frame longitudinal beams 4 through the guard plate supports.
As an improvement of the embodiment, as shown in fig. 3 and 4, the noise reduction guard board 2 comprises a glass fiber reinforced plastic layer 2-1, a sound absorbing cotton layer 2-2 and an aluminum foil layer 2-3, wherein the sound absorbing cotton layer 2-2 is installed on the upper surface of the glass fiber reinforced plastic layer 2-1 through viscose hot pressing, and the aluminum foil layer 2-3 is installed on the upper surface of the sound absorbing cotton layer 2-2 through viscose hot pressing, so that the noise reduction guard board 2 has no deformation and fracture phenomena at the temperature of 100 ℃; the sound-absorbing cotton has no glue spreading phenomenon at 200 ℃, and the aluminum foil coated on the inner surface can effectively block heat generated when an engine runs at a high speed; in addition, the outer side of the noise reduction guard plate 2 is made of glass fiber reinforced plastic, so that hard objects such as sand and stone rolled up after the tire is rolled in the running process of the vehicle can be prevented from striking the engine.
As an improvement of the embodiment, as shown in fig. 1, the guard board support comprises a guard board support I3 and a guard board support II 5, the noise reduction guard board 2 is fixed on the frame longitudinal beam 4 through the mounting bolts 6 by the guard board support I3 and the guard board support II 5, the tightness is good, the noise reduction guard board 2 is connected on the frame longitudinal beams on two sides of the engine through the bolts, the installation and the disassembly are convenient, and the noise reduction of the noise reduction guard board 2 on the outside of the vehicle is obvious when the vehicle runs.
As an improvement of the embodiment, the noise reduction assembly is positioned between the lower periphery of the cab and the upper wing surface of the frame, can prevent the water gun from being washed during car washing, and protects the electrical components and the plug-in wire harness around the engine.
As an improvement of the embodiment, the noise reduction guard plate 2 is molded, adopts streamline transition design, has no stress concentration phenomenon through finite element simulation, has high reliability and durability, can ensure the clearance of peripheral parts, is attractive and elegant, and can bear the pressure of more than 70kg; in addition, as shown in fig. 4, the glass fiber reinforced plastic layer 2-1 is embedded with the stainless steel bushing 2-4, and the stainless steel bushing 2-4 is positioned between the glass fiber reinforced plastic layer 2-1 and the guard plate support, so as to prevent the guard plate support from wearing the glass fiber reinforced plastic layer 2-1, and prolong the service life of the noise reduction guard plate 2.
Finally, the utility model also provides a vehicle, and the engine noise reduction device is arranged on the vehicle.
During installation, each noise reduction guard plate 2 is fixed on the frame longitudinal beam 4 through the first guard plate support 3 and the second guard plate support 5 in cooperation with the mounting bolts 6, the two noise reduction guard plates 2 are symmetrically arranged on two sides of the engine 1, and the noise reduction guard plates 2 are located between the lower periphery of the cab and the upper wing surface of the frame.
The engine noise reduction device is simple in structure and low in cost, can effectively absorb and block the transmission of engine noise to two sides, reduces noise outside a vehicle, and improves NVH performance of the vehicle.
The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, or alternatives falling within the spirit and principles of the utility model.
Claims (7)
1. The noise reduction device for the engine comprises the engine (1) and is characterized by further comprising noise reduction assemblies symmetrically arranged on two sides of the engine (1), wherein the noise reduction assemblies comprise noise reduction guard plates (2) and guard plate supports, and the noise reduction guard plates (2) are fixed on frame longitudinal beams (4) through the guard plate supports.
2. The noise reduction device for the engine according to claim 1, wherein the noise reduction guard plate (2) comprises a glass fiber reinforced plastic layer (2-1), a sound absorption cotton layer (2-2) and an aluminum foil layer (2-3), the sound absorption cotton layer (2-2) is arranged on the upper surface of the glass fiber reinforced plastic layer (2-1), and the aluminum foil layer (2-3) is arranged on the upper surface of the sound absorption cotton layer (2-2).
3. An engine noise reduction device according to claim 2, characterized in that the noise reduction guard plate (2) further comprises a stainless steel bushing (2-4), the stainless steel bushing (2-4) being embedded in the glass fibre reinforced plastic layer (2-1).
4. The engine noise reduction device according to claim 1, wherein the guard plate support comprises a guard plate support one (3) and a guard plate support two (5), and the guard plate support one (3) and the guard plate support two (5) fix the noise reduction guard plate (2) on the frame rail (4) through mounting bolts (6).
5. An engine noise reducer according to claim 1, wherein the noise reducing assembly is located between the lower periphery of the cab and the upper airfoil surface of the frame.
6. The noise reduction device for the engine according to claim 1, wherein the noise reduction guard plate (2) is formed by compression molding and adopts a streamline transition structure.
7. A vehicle having the engine noise reduction device according to any one of claims 1 to 6 mounted thereon.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322581403.7U CN221023537U (en) | 2023-09-22 | 2023-09-22 | Engine noise reduction device and vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322581403.7U CN221023537U (en) | 2023-09-22 | 2023-09-22 | Engine noise reduction device and vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221023537U true CN221023537U (en) | 2024-05-28 |
Family
ID=91135779
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322581403.7U Active CN221023537U (en) | 2023-09-22 | 2023-09-22 | Engine noise reduction device and vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221023537U (en) |
-
2023
- 2023-09-22 CN CN202322581403.7U patent/CN221023537U/en active Active
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant |