CN219754654U - Air inlet structure for improving air leakage noise of turbocharger - Google Patents
Air inlet structure for improving air leakage noise of turbocharger Download PDFInfo
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- CN219754654U CN219754654U CN202320339997.8U CN202320339997U CN219754654U CN 219754654 U CN219754654 U CN 219754654U CN 202320339997 U CN202320339997 U CN 202320339997U CN 219754654 U CN219754654 U CN 219754654U
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- 229920000742 Cotton Polymers 0.000 description 1
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- 239000000446 fuel Substances 0.000 description 1
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Abstract
The utility model discloses an air inlet structure for improving air leakage noise of a turbocharger, which comprises an air inlet main pipeline, a pressurizing pipe and a branch pipe, wherein the same ends of the air inlet main pipeline and the pressurizing pipe are connected with the turbocharger, a pressure release valve is arranged on the pressurizing pipe, one end of the branch pipe is connected with the pressure release valve, and the other end of the branch pipe is connected with the other end of the air inlet main pipeline. The air inlet structure for improving the air leakage noise of the turbocharger is reasonable in design, the pressure release air flow field is changed by additionally arranging the branch pipe, the impact of pressure release air flow on the turbocharger is weakened, the near-field pressure release noise of the air inlet pipeline is improved, the structure is simple, and the cost is relatively low.
Description
Technical Field
The utility model relates to the technical field of automobile turbocharging, in particular to an air inlet structure for improving air leakage noise of a turbocharger.
Background
With the increasing demands of environmental regulations, high engine output and low fuel consumption demands of users, turbocharged engines are becoming more and more popular in the use of automobiles, and the trend of miniaturization of superchargers is becoming more and more evident. The noise problem associated with superchargers is also becoming increasingly prominent. The highest rotating speed of the supercharger can reach more than 30 ten thousand revolutions per minute, and various noises are generated in the operation process of the supercharger due to the interaction of the impeller and the air flow, dynamic unbalance of the rotor, oil film vibration of the floating ring bearing and other factors, so that the acoustic quality in the automobile can be greatly reduced, noise interference to a driver and passengers is caused, and discomfort is caused.
The noise of the supercharger is a common noise of the supercharger, mainly when the throttle of the engine is released, the gas in the pipeline is discharged into the supercharging forward air inlet pipeline through the decompression valve via the decompression pipe after supercharging in a relatively short time, and the rotating speed of the supercharger is caused to change rapidly in a relatively short time. Its main spectral feature is a relatively broad frequency band, which may occur in the range of 5000-10000 Hz. The pressure release noise is mainly radiated to the driving cab through the air inlet pipe in front of the supercharger, so that driving feeling is reduced. In order to solve the noise problem, the conventional optimization method comprises a broadband muffler, a muffler material (rubber or muffler cotton) wrapping of an air inlet pipeline, and the like, and has relatively large modification and relatively high cost.
Disclosure of Invention
Aiming at the defects of the prior art, the utility model provides the air inlet structure for improving the air leakage noise of the turbocharger, which has simple structure and relatively low cost.
In order to solve the technical problems, the utility model adopts the following technical scheme:
this improve air inlet structure of turbo charger release noise, including inlet main pipe and booster pipe, inlet main pipe and booster pipe's same end all links to each other with the booster, be equipped with the relief valve on the booster pipe, still include the bleeder, the one end and the relief valve of bleeder link to each other, and the other end and the inlet main pipe other end of bleeder link to each other.
Further:
the pressure release valve is provided with a pressure release pipe, and one end of the branch pipe is communicated with the pressure release pipe.
The pipe diameter of the branch pipe is smaller than that of the main air inlet pipe.
And the calibers of the two ends of the main air inlet pipeline are different, the end connected with the supercharger is a small end, and the other end is a large end.
The other end of the branch pipe is tangentially arranged by the edge of the main air inlet pipeline.
The other end of the branch pipe is obliquely arranged towards the port of the main air inlet pipeline.
And an inclined extending interface which is used for being connected with the other end of the branch pipe is arranged at the position close to the port on the main air inlet pipeline.
Compared with the prior art, the utility model has the following advantages:
the air inlet structure for improving the air leakage noise of the turbocharger is reasonable in design, the pressure release air flow field is changed by additionally arranging the branch pipe, the impact of pressure release air flow on the turbocharger is weakened, the near-field pressure release noise of the air inlet pipeline is improved, the structure is simple, and the cost is relatively low.
Drawings
The contents and the marks in the drawings expressed in the drawings of the present specification are briefly described as follows:
fig. 1 is a schematic view of an air intake structure of the present utility model.
FIG. 2 is a schematic diagram of the air flow according to the present utility model.
FIG. 3 is a second flow chart of the present utility model.
FIG. 4 is a schematic diagram of the locations of the branch pipes and the main pipes according to the present utility model.
Fig. 5 is a schematic cross-sectional view taken along A-A in fig. 4.
In the figure:
1. the device comprises an air inlet main pipeline, a supercharger, a supercharging pipe, a decompression valve, a decompression pipe and a branch pipe, wherein the main air inlet pipeline, the supercharger, the supercharging pipe, the decompression valve, the decompression pipe and the branch pipe are arranged in sequence, and the branch pipe is arranged in sequence.
Detailed Description
The following description of the embodiments of the present utility model refers to the accompanying drawings, which illustrate in further detail.
As shown in fig. 1 to 5, the air intake structure for improving the exhaust noise of the turbocharger comprises an air intake main pipe 1, a supercharging pipe 3 and a branch pipe 6; the same end of the main air inlet pipe and the booster pipe are connected with the booster 2, the booster pipe is provided with a pressure relief valve 4, one end of the branch pipe is connected with the pressure relief valve, and the other end of the branch pipe is connected with the other end of the main air inlet pipe.
The pressure release valve 4 is provided with a pressure release pipe 5, one end of the branch pipe is communicated with the pressure release pipe, and the connection is simple and convenient. The pressure relief gas flow field is changed by additionally arranging the branch pipe, so that the impact of pressure relief gas flow on the supercharger is weakened, the near-field pressure relief noise of the air inlet pipeline is improved, and the pressure relief device is simple in structure and relatively low in cost.
The calibers of the two ends of the main air inlet pipeline 1 are different, the end connected with the supercharger is a small end, and the other end is a large end. The main pipe has two openings with unequal diameters, and a typical value of the diameter of the large end is 79mm, and a typical value of the diameter of the small end is 53mm, and the main pipe airflow direction is from the large end to the small end.
The pipe diameter of the branch pipe 6 is smaller than that of the main air inlet pipe; the branch pipe is a cylindrical pipeline, and a typical diameter is 28mm; the other end of the branch pipe is tangentially arranged by the edge of the main air inlet pipeline; the branch pipeline and the main pipeline form a certain included angle, the pressure relief airflow forms a circular flow in the main pipeline, the flow speed of the pressure relief airflow is weakened, and then the airflow change is weakened.
An inclined extending interface for connecting with the other end of the branch pipe is arranged at the port of the upper main inlet pipe; the other end of the branch pipe is obliquely arranged towards the port of the main air inlet pipeline. The pressure relief airflow has opposite components in the direction of the inlet airflow, so that the impact of the pressure relief airflow on the supercharger is weakened, and the airflow change is weakened.
The projection distance of the root of the branch pipe from the large end face is a typical value of 41mm; as shown in fig. 4 and 5, in order to conveniently identify the position relationship between the branch pipe and the main pipeline, a rectangular coordinate system is established by using the large end surface and the parting surface of the part; the projection of the axis of the branch pipe does not have a perpendicular or parallel relation with each coordinate plane, and a typical value of the angle with the end face is 25.3 degrees, and a typical value of the angle with the parting plane is 78.6 degrees.
The foregoing description is only illustrative of the preferred embodiments of the present utility model, and the above-described technical features may be arbitrarily combined to form a plurality of embodiments of the present utility model.
While the utility model has been described above with reference to the accompanying drawings, it will be apparent that the utility model is not limited to the above embodiments, but is capable of being modified or applied to other applications without any modification, as long as the inventive concept and technical scheme are adopted.
Claims (7)
1. The utility model provides an improve air inlet structure of turbo charger release noise, includes inlet main pipe and booster pipe, inlet main pipe and booster pipe's same end all links to each other with the booster, be equipped with the relief valve on the booster pipe, its characterized in that: the device further comprises a branch pipe, one end of the branch pipe is connected with the pressure release valve, and the other end of the branch pipe is connected with the other end of the main inlet pipe.
2. An intake structure for improving turbocharger blow-by noise as defined in claim 1, wherein: the pressure release valve is provided with a pressure release pipe, and one end of the branch pipe is communicated with the pressure release pipe.
3. An intake structure for improving turbocharger blow-by noise as defined in claim 1, wherein: the pipe diameter of the branch pipe is smaller than that of the main air inlet pipe.
4. An intake structure for improving turbocharger blow-by noise as defined in claim 1, wherein: and the calibers of the two ends of the main air inlet pipeline are different, the end connected with the supercharger is a small end, and the other end is a large end.
5. An intake structure for improving turbocharger blow-by noise as defined in claim 1, wherein: the other end of the branch pipe is tangentially arranged by the edge of the main air inlet pipeline.
6. An intake structure for improving turbocharger blow-by noise as defined in claim 1, wherein: the other end of the branch pipe is obliquely arranged towards the port of the main air inlet pipeline.
7. An intake structure for improving turbocharger blow-by noise as defined in claim 6, wherein: and an inclined extending interface which is used for being connected with the other end of the branch pipe is arranged at the position close to the port on the main air inlet pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320339997.8U CN219754654U (en) | 2023-02-28 | 2023-02-28 | Air inlet structure for improving air leakage noise of turbocharger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320339997.8U CN219754654U (en) | 2023-02-28 | 2023-02-28 | Air inlet structure for improving air leakage noise of turbocharger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219754654U true CN219754654U (en) | 2023-09-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320339997.8U Active CN219754654U (en) | 2023-02-28 | 2023-02-28 | Air inlet structure for improving air leakage noise of turbocharger |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219754654U (en) |
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2023
- 2023-02-28 CN CN202320339997.8U patent/CN219754654U/en active Active
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