CN2617632Y - Soundproof shield of rear engine drain pan of bus - Google Patents
Soundproof shield of rear engine drain pan of bus Download PDFInfo
- Publication number
- CN2617632Y CN2617632Y CN 03230157 CN03230157U CN2617632Y CN 2617632 Y CN2617632 Y CN 2617632Y CN 03230157 CN03230157 CN 03230157 CN 03230157 U CN03230157 U CN 03230157U CN 2617632 Y CN2617632 Y CN 2617632Y
- Authority
- CN
- China
- Prior art keywords
- acoustic enclosure
- engine
- sump tank
- rear mounted
- layer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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- Cylinder Crankcases Of Internal Combustion Engines (AREA)
Abstract
The utility model relates to a sound insulation cover used in the oil pan of a rear engine motor coach, in particular to a trough structure which is positioned below the engine oil pan and adaptable to the shape of the engine oil pan; the sound insulation cover is a structure of multilayer materials, which comprises a sound absorption layer, a damping layer and a sound insulation housing layer from inside outward in sequence. The sound insulation cover used in the oil pan of a rear engine motor coach provided in the utility model can block the noise generated by the oil pan of the engine and reduce the noise caused by the acceleration of an entire car by 1.5 decibels.
Description
Technical field
The utility model relates to a kind of environmental protection equipment, relates in particular to a kind of engine rear mounted bus engine sump tank acoustic enclosure.
Background technology
Mostly the vehicular engine oil pan tray is the thin shell structure spare that is stamped to form by steel plate, has that area is big, the characteristics of poor rigidity.The radiated noise that the oil pan structure vibration that is caused by the engine body vibration is produced has constituted one of overriding noise source of driving engine.Because oil pan tray place temperature is higher, is difficult to control effectively with damping material the radiation of vibration noise.Therefore, how to control or eliminate the radiated noise that is produced by engine sump tank structural vibration, be vast auto trade, problem that efforts at environmental protection person paid close attention to always.
Summary of the invention
The purpose of this utility model is to provide a kind of engine rear mounted bus engine sump tank acoustic enclosure that can effectively block the oil pan tray noise of driving engine.
The purpose of this utility model is achieved in that a kind of engine rear mounted bus engine sump tank acoustic enclosure, be characterized in, described acoustic enclosure be one with the adaptive bathtub construction part of profile of engine sump tank, be installed in the below of engine sump tank; Acoustic enclosure is the multilayer material framing member, and this multilayer material comprises absorbent treatment, damping layer and the acoustic enclosure layer of sequential cascade from inside to outside.
Above-mentioned engine rear mounted bus engine sump tank acoustic enclosure, wherein, described absorbent treatment comprises the resonance sound-absorbing layer and the aerated materials absorbent treatment of sequential cascade from inside to outside.
Above-mentioned engine rear mounted bus engine sump tank acoustic enclosure, wherein, described resonance sound-absorbing layer is made of perforated plate.
Above-mentioned engine rear mounted bus engine sump tank acoustic enclosure, wherein, described aerated materials absorbent treatment is made of block of glass wool.
Above-mentioned engine rear mounted bus engine sump tank acoustic enclosure, wherein, described damping layer is made of damping material.
Above-mentioned engine rear mounted bus engine sump tank acoustic enclosure, wherein, described acoustic enclosure layer is made of steel plate.
The utility model engine rear mounted bus engine sump tank acoustic enclosure has been owing to adopted the resonance sound-absorbing layer that is made of perforated plate, the aerated materials absorbent treatment that is made of block of glass wool, the damping layer that is made of damping material, the pugging that is made of steel plate.Make this structure in quite wide frequency band, have good sound absorbing capabilities, be installed under the engine sump tank and can effectively block the engine sump tank noise, make the car load noise emitted by accelerating motor vehicle reduce by 1.5 decibels.
Description of drawings
By the description of following examples in conjunction with its accompanying drawing, can further understand the purpose of this utility model, concrete structure characteristics and advantage, wherein, accompanying drawing is:
Fig. 1 is the structure cutaway view of the utility model engine rear mounted bus engine sump tank acoustic enclosure.
The specific embodiment
See also Fig. 1, engine rear mounted bus engine sump tank acoustic enclosure of the present utility model, be one with the adaptive bathtub construction part of profile of engine sump tank, be installed in the below of engine sump tank; The dual-side symmetry of acoustic enclosure is bent into and is in conplane joint face, is used for by bolt acoustic enclosure being fixed on the other automobile longitudinal girder of engine sump tank; The front end of acoustic enclosure is provided with wind deflector structure (not shown), the gap of bootable windstream between acoustic enclosure and engine sump tank; Thereby make mobile wind satisfy the cooling requirement of oil pan tray, acoustic enclosure is the multilayer material framing member, and this multilayer material comprises absorbent treatment 1, damping layer 2 and the acoustic enclosure layer 3 of sequential cascade from inside to outside.
Absorbent treatment 1 comprises the resonance sound-absorbing layer 11 and the aerated materials absorbent treatment 12 of sequential cascade from inside to outside.Resonance sound-absorbing layer 11 is made of perforated plate.Aerated materials absorbent treatment 12 is made of block of glass wool.This structure has good sound absorbing capabilities in quite wide frequency band,
Claims (6)
1, a kind of engine rear mounted bus engine sump tank acoustic enclosure is characterized in that: described acoustic enclosure be one with the adaptive bathtub construction part of profile of engine sump tank, be installed in the below of engine sump tank; Acoustic enclosure is the multilayer material framing member, and this multilayer material comprises absorbent treatment, damping layer and the acoustic enclosure layer of sequential cascade from inside to outside.
2, engine rear mounted bus engine sump tank acoustic enclosure according to claim 1 is characterized in that: described absorbent treatment comprises the resonance sound-absorbing layer and the aerated materials absorbent treatment of sequential cascade from inside to outside.
3, engine rear mounted bus engine sump tank acoustic enclosure according to claim 2, it is characterized in that: described resonance sound-absorbing layer is made of perforated plate.
4, engine rear mounted bus engine sump tank acoustic enclosure according to claim 2, it is characterized in that: described aerated materials absorbent treatment is made of block of glass wool.
5, engine rear mounted bus engine sump tank acoustic enclosure according to claim 1, it is characterized in that: described damping layer is made of damping material.
6, engine rear mounted bus engine sump tank acoustic enclosure according to claim 1, it is characterized in that: described acoustic enclosure layer is made of steel plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03230157 CN2617632Y (en) | 2003-04-09 | 2003-04-09 | Soundproof shield of rear engine drain pan of bus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03230157 CN2617632Y (en) | 2003-04-09 | 2003-04-09 | Soundproof shield of rear engine drain pan of bus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2617632Y true CN2617632Y (en) | 2004-05-26 |
Family
ID=34247497
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03230157 Expired - Lifetime CN2617632Y (en) | 2003-04-09 | 2003-04-09 | Soundproof shield of rear engine drain pan of bus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2617632Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105946520A (en) * | 2016-05-30 | 2016-09-21 | 爱佩仪中测（成都）精密仪器有限公司 | Protection structure for single-arm three-dimensional measurement scribing instrument |
| CN112669801A (en) * | 2020-12-31 | 2021-04-16 | 上海电气燃气轮机有限公司 | Sound insulation and absorption plate unit, sound insulation and absorption plate and housing |
-
2003
- 2003-04-09 CN CN 03230157 patent/CN2617632Y/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105946520A (en) * | 2016-05-30 | 2016-09-21 | 爱佩仪中测（成都）精密仪器有限公司 | Protection structure for single-arm three-dimensional measurement scribing instrument |
| CN112669801A (en) * | 2020-12-31 | 2021-04-16 | 上海电气燃气轮机有限公司 | Sound insulation and absorption plate unit, sound insulation and absorption plate and housing |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20130409 Granted publication date: 20040526 |