CN201190589Y - Noise reduction structure for oil pan of engine - Google Patents
Noise reduction structure for oil pan of engine Download PDFInfo
- Publication number
- CN201190589Y CN201190589Y CNU2008200981750U CN200820098175U CN201190589Y CN 201190589 Y CN201190589 Y CN 201190589Y CN U2008200981750 U CNU2008200981750 U CN U2008200981750U CN 200820098175 U CN200820098175 U CN 200820098175U CN 201190589 Y CN201190589 Y CN 201190589Y
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- CN
- China
- Prior art keywords
- oil sump
- engine
- vibration
- sump
- damp
- 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 - Fee Related
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- Cylinder Crankcases Of Internal Combustion Engines (AREA)
- Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)
Abstract
The utility model relates to a noise reduction structure of an engine oil sump, comprising an oil sump; a position of the external surface of the oil sump, which has greater vibration, is connected with a damp vibration damper which is a sandwich structure formed by multiple layers of thin wall steel plate and damp material alternatively and pressed at one step according to the shape of coating surface of the oil sump. By increasing the damp vibrating damper at a proper position of the engine oil sump, the utility model achieves the function of absorbing vibration and altering the natural frequency, reduces radiation of the oil sump and directly improves the NVH performance of the engine under working state.
Description
Technical field
The utility model belongs to engine technology, is specifically related to the oil sump noise reduction technology of motor.
Background technique
The noise source of motor is a lot, and wherein the radiated noise of oil sump is a kind of pith, and it influences the integral radiation noise level of motor generally.Existing engine sump tank normally directly is stamped to form by the thin steel plate of individual layer, and on structure, its rigidity is lower, and the own damping of steel plate simultaneously is very little, and is therefore unfavorable to the NVH performance of oil sump own.
Summary of the invention
The purpose of this utility model is the problems referred to above at the prior art existence, a kind of engine sump tank denoising structure is provided, by increase the damping vibration attenuation sheet in the engine sump tank appropriate location, the effect that reaches absorbing and change natural frequency is minimized the radiation of oil sump.
The technical solution of the utility model is as follows:
A kind of engine sump tank denoising structure includes oil sump, and the outer surface in the big position of the vibration of oil sump connects the damping vibration attenuation sheet.
" sandwich " structure that described damping vibration attenuation sheet disposablely is stamped to form, alternately is made up of mutually multilayer thin-walled steel plate and damping material according to oil sump coating surface shape.
The utility model is by increasing the damping vibration attenuation sheet in the engine sump tank appropriate location, the effect that reaches absorbing and change natural frequency reduces the radiation of oil sump, has directly improved the NVH performance of motor under in working order.
By the engine sump tank after optimizing is carried out verification experimental verification again, find that the NVH performance of oil sump is significantly improved.
Description of drawings
Fig. 1 is the schematic representation of engine sump tank denoising structure;
Fig. 2 is the A-A sectional drawing that damping vibration attenuation sheet part is installed among Fig. 1.
Embodiment
(1), determines the big position of vibration (definition oil sump surface velocity level is the big position of vibration greater than 100dB) of engine sump tank 1 by test.
(2) as shown in Figure 1, increase damping vibration attenuation sheet 2, fixedly connected with Screw 3 mutually between damping vibration attenuation sheet 2 and the oil sump 1 in the big position of the vibration of engine sump tank 1.Alternately form " sandwich " structures referring to this damping vibration attenuation sheet 2 of Fig. 2 mutually by multilayer thin-walled steel plate 22 and damping material 21, and according to disposable being stamped to form of coating surface shape of oil sump 1.For most motors, the big position of vibration is in the air inlet side of oil sump 1, has therefore carried out increasing the processing of damping vibration attenuation sheet as shown in Figure 1 in oil sump air inlet side.
In actual applications, need be by the thickness of mesosphere damping material and quality and metal layer thickness be constantly adjusted, and, reach the effect that reduces oil sump vibration and radiated noise at last in conjunction with the method for verification experimental verification.
Claims (3)
1, a kind of engine sump tank denoising structure includes oil sump, it is characterized in that: the outer surface in the big position of the vibration of oil sump connects the damping vibration attenuation sheet.
2, engine sump tank denoising structure according to claim 1 is characterized in that: " sandwich " structure that described damping vibration attenuation sheet disposablely is stamped to form, alternately is made up of mutually multilayer thin-walled steel plate and damping material according to oil sump coating surface shape.
3, engine sump tank denoising structure according to claim 1 and 2 is characterized in that: the big position of the vibration of described oil sump is an oil sump air inlet side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200981750U CN201190589Y (en) | 2008-04-29 | 2008-04-29 | Noise reduction structure for oil pan of engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200981750U CN201190589Y (en) | 2008-04-29 | 2008-04-29 | Noise reduction structure for oil pan of engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201190589Y true CN201190589Y (en) | 2009-02-04 |
Family
ID=40334749
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200981750U Expired - Fee Related CN201190589Y (en) | 2008-04-29 | 2008-04-29 | Noise reduction structure for oil pan of engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201190589Y (en) |
-
2008
- 2008-04-29 CN CNU2008200981750U patent/CN201190589Y/en not_active Expired - Fee Related
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090204 Termination date: 20170429 |