CN221002968U - Air filter structure for improving calibration stability of whole vehicle - Google Patents
Air filter structure for improving calibration stability of whole vehicle Download PDFInfo
- Publication number
- CN221002968U CN221002968U CN202322620342.0U CN202322620342U CN221002968U CN 221002968 U CN221002968 U CN 221002968U CN 202322620342 U CN202322620342 U CN 202322620342U CN 221002968 U CN221002968 U CN 221002968U
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- air
- air outlet
- cavity
- deflector
- filter layer
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- 238000005192 partition Methods 0.000 claims abstract description 23
- 238000001914 filtration Methods 0.000 claims abstract description 12
- 238000007789 sealing Methods 0.000 claims description 8
- 230000006835 compression Effects 0.000 claims description 3
- 238000007906 compression Methods 0.000 claims description 3
- 239000003570 air Substances 0.000 description 110
- 239000000446 fuel Substances 0.000 description 5
- 238000002347 injection Methods 0.000 description 4
- 239000007924 injection Substances 0.000 description 4
- 239000012535 impurity Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 239000012080 ambient air Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
Landscapes
- Filtering Of Dispersed Particles In Gases (AREA)
- Measuring Volume Flow (AREA)
Abstract
The utility model discloses an air filtering structure for improving the calibration stability of a whole vehicle, which comprises an upper shell and a lower shell which are connected up and down, wherein a lower partition plate is arranged in the lower shell, and the lower partition plate divides the lower shell into a filtering layer cavity and an air outlet cavity; the filter layer is arranged on the upper portion of the filter layer cavity, the filter layer and the lower shell below the filter layer enclose an air inlet cavity, the side wall of the air inlet cavity is connected with an air inlet, an air outlet is formed in the lower shell at one end portion of the air outlet cavity, a deflector which is obliquely arranged is arranged at the other end portion of the air outlet cavity, the vertical section of the deflector is arc-shaped, the high end of the deflector is higher than the air outlet, and the low end of the deflector faces the middle of the air outlet. An air guide grille component is arranged in the air outlet; after the air guide grid assembly and the guide plate are added, the stability of the air flow can be improved, turbulence is reduced, laminar flow is increased, the reading of the high air quality flowmeter in the whole vehicle calibration is more stable, and the overall performances of the automobile engine such as dynamic performance, economy, oil consumption, tail gas emission index and the like are improved.
Description
Technical Field
The utility model relates to the technical field of air filters.
Background
An air filter is arranged in an air inlet system of the engine of the fuel motor vehicle and is used for filtering impurities in ambient air, so that the impurities are prevented from entering the engine to influence the normal operation of the engine.
The requirements on carbon emission of motor vehicles are increasingly strict, and state six b is implemented, so that the whole vehicle produced by a main engine factory needs to be calibrated. One of the main tasks of the whole vehicle calibration is to enable the vehicle to meet national emission regulations, improve the comfort and smoothness of the vehicle and the like.
The air mass flowmeter is used for measuring the air quantity sucked into the engine, and the output signal of the air mass flowmeter is used as a main parameter for controlling the fuel injection quantity in the fuel electronic injection system of the automobile engine to determine the basic fuel injection quantity and the fuel injection time of the automobile.
The reading stability of the air mass flowmeter greatly affects the whole vehicle performance, and the overall performance such as the dynamic performance, the economical efficiency, the oil consumption and the tail gas emission index of the automobile engine are directly affected.
Therefore, the design of the air filter structure capable of improving the reading stability of the air mass flowmeter has important significance for improving the overall performance of the whole vehicle.
In particular to an air filter with air inlet and air outlet arranged on an air filtering lower shell, the air flow field in the air filtering is complex, turbulence is more, the reading stability of an air mass flowmeter is poor when the whole vehicle is calibrated, and the air flow stability is particularly necessary to be improved for the air filter.
Disclosure of utility model
The utility model aims to provide an air filter structure for improving the calibration stability of a whole vehicle, which improves the air flow stability and is beneficial to meeting higher performance requirements in the calibration of the whole vehicle.
In order to achieve the purpose, the air filtering structure for improving the calibration stability of the whole vehicle comprises an upper shell and a lower shell which are connected up and down, wherein a lower partition plate is arranged in the lower shell, and the lower partition plate divides the lower shell into a filtering layer cavity and an air outlet cavity; the upper part of the filter layer cavity is provided with a filter layer, the filter layer and a lower shell below the filter layer enclose an air inlet cavity, and the filter layer and an upper shell above the filter layer enclose a clean air cavity;
The side wall of the air inlet cavity is connected with an air inlet, an air outlet is arranged on the lower shell at one end part of the air outlet cavity,
The other end of the air outlet cavity is provided with a deflector which is obliquely arranged, the vertical section of the deflector is arc-shaped, one end of the deflector, which is away from the air outlet, is higher than one end of the deflector, which is towards the air outlet, the high end of the deflector is higher than the air outlet, and the low end of the deflector is towards the middle part of the air outlet.
An air guide grille component is arranged in the air outlet; the air guide grille component comprises a flat cylinder in interference fit with the inner wall of the air outlet, two ends of the axial direction of the flat cylinder are both open, and an axially-transparent rectifying grille is fixedly connected in the flat cylinder; the radial bulge at the end part of the flat cylinder is provided with a convex ring which is used for being clamped outside the inner end of the air inlet.
An upper baffle plate is arranged in the upper shell, and the upper baffle plate corresponds to the lower baffle plate and is in sealing and compression joint with the lower baffle plate; the upper partition board is provided with through holes communicated with the air outlet cavity, one or two through holes are arranged, and at least one through hole is opposite to the guide plate.
The top surface of the lower shell and the top surface of the lower partition board are provided with sealing rings which encircle the filter layer cavity and the air outlet cavity.
The utility model has the following advantages:
The arc-shaped guide plate enables the airflow flowing to the air outlet in the air outlet cavity to be smoother, turbulence is reduced, laminar flow is increased, the reading of the high-air mass flowmeter in the whole vehicle calibration is more stable under the same working condition, and the overall performances of the automobile engine such as dynamic performance, economical efficiency, oil consumption and tail gas emission index are improved.
The airflow flowing out of the utility model is more uniform and stable after being guided by the rectification grating, the turbulence phenomenon is further reduced, the laminar flow phenomenon is further increased, the reading of the high air quality flowmeter in the whole vehicle calibration is more stable, and the overall performances of the automobile engine such as dynamic property, economy, oil consumption, tail gas emission index and the like are improved. The interference fit makes the air guide grille assembly only need to press in the air inlet and can finish the installation, and the bulge loop can avoid the air guide grille assembly to be completely pressed in the air inlet, so that the air guide grille assembly is convenient to detach and maintain and does not need to be installed by means of tools.
The at least one through hole is opposite to the guide plate, so that the phenomenon that the air flow directly enters the air outlet without basically passing through the guide plate can be avoided.
The sealing ring is arranged, so that the press joint surface of the upper shell and the lower shell and the press joint surface of the upper partition plate and the lower partition plate form good sealing.
Drawings
FIG. 1 is a schematic perspective view of the present utility model with the upper cover removed;
FIG. 2 is a schematic perspective view of the utility model with the upper cover and filter layer removed;
FIG. 3 is a schematic perspective view of the upper cover;
FIG. 4 is a schematic view of the structure of the baffle of the present utility model;
FIG. 5 is a schematic perspective view of a baffle;
FIG. 6 is a schematic perspective view of a baffle at another angle;
FIG. 7 is a schematic perspective view of an air guide grille assembly;
FIG. 8 is a schematic view of the structure of the air guide grille assembly;
FIG. 9 is a simulated turbulent energy cloud of an air cleaner without a grid and a baffle;
FIG. 10 is a simulated turbulent kinetic energy cloud of an air cleaner employing the present utility model;
Fig. 11 is a calibration data picture of an engine employing the present utility model.
Fig. 9 to 11 are for further illustrating advantages of the present utility model, and do not express the structure of the present utility model.
Detailed Description
As shown in fig. 1 to 8, the air filtering structure for improving the calibration stability of the whole vehicle comprises an upper shell 1 and a lower shell 2 which are connected up and down (preferably fixedly connected through bolts), wherein a lower partition plate 3 is arranged in the lower shell 2, and the lower partition plate 3 divides the lower shell 2 into a filtering layer cavity 4 and an air outlet cavity 5; the upper part of the filter layer cavity 4 is provided with a filter layer 6, the filter layer 6 and the lower shell 2 below the filter layer enclose an air inlet cavity, and the filter layer 6 and the upper shell 1 above the filter layer enclose a clean air cavity 7;
The side wall of the air inlet cavity is connected with an air inlet 8, an air outlet 9 is arranged on the lower shell 2 at one end part of the air outlet cavity 5, a deflector 10 which is obliquely arranged is arranged at the other end part of the air outlet cavity 5, the vertical section of the deflector 10 is arc-shaped, one end of the deflector 10, which is away from the air outlet 9, is higher than one end, which is towards the air outlet 9, of the deflector 10, the high end of the deflector 10 is higher than the air outlet 9, and the low end of the deflector 10 is towards the middle part of the air outlet 9.
The arc-shaped guide plate 10 enables the air flow flowing to the air outlet 9 in the air outlet cavity 5 to be smoother, turbulence is reduced, laminar flow is increased, the reading of a high-air mass flowmeter in the whole vehicle calibration is more stable under the same working condition, and the overall performances of the automobile engine such as dynamic performance, economy, oil consumption, tail gas emission index and the like are improved.
An air guide grille component is arranged in the air outlet 9; the air guide grille assembly comprises a flat cylinder 11 in interference fit with the inner wall of the air outlet 9, two axial ends of the flat cylinder 11 are open, and an axially transparent rectifying grille 12 is fixedly connected in the flat cylinder 11; the end part of the flat cylinder 11 is radially provided with a convex ring 13 for being blocked outside the inner end of the air inlet 8.
The airflow flowing out of the utility model is more uniform and stable after being guided by the rectification grating 12, the turbulence phenomenon is further reduced, the laminar flow phenomenon is further increased, the reading of the high air quality flowmeter in the whole vehicle calibration is further more stable, and the overall performances of the automobile engine such as dynamic property, economy, oil consumption, tail gas emission index and the like are improved. The air guide grille component can be installed by being pressed into the air inlet 8 by interference fit, and the air guide grille component is not easy to fall off after being installed; the convex ring 13 can prevent the air guide grille assembly from being completely pressed into the air inlet 8, so that the air guide grille assembly is convenient to detach and maintain, and does not need to be installed by means of tools.
An upper partition plate 14 is arranged in the upper shell 1, and the upper partition plate 14 corresponds to the lower partition plate 3 and is in sealing and compression joint with the lower partition plate 3; the upper partition plate 14 is provided with through holes 15 communicated with the air outlet cavity 5, one or two through holes 15 are arranged, and at least one through hole 15 is opposite to the guide plate 10. The at least one through hole 15 is opposite to the baffle 10, so that the phenomenon that the air flow directly enters the air outlet 9 without basically passing through the baffle 10 can be avoided.
The top surface of the lower shell 2 and the top surface of the lower partition plate 3 are provided with sealing rings 16 surrounding the filter layer cavity 4 and the air outlet cavity 5. The seal ring 16 is provided so that the pressure contact surfaces of the upper case 1 and the lower case 2, and the pressure contact surfaces of the upper partition 14 and the lower partition 3 are well sealed.
The high end part of the deflector 10 is supported downwards by the high supporting block 17 and is fixed on the bottom wall of the air outlet cavity 5, and the middle part of the deflector 10 is supported downwards by the middle supporting block 18 and is fixed on the bottom wall of the air outlet cavity 5. The bottom wall of the air outlet cavity 5 is not planar, and the bottom wall of the air outlet cavity 5 at the air outlet 9 is the lowest.
When the air inlet and the air outlet are arranged on the air filtering lower shell, the internal gas flow field is more complex, the fluctuation of the air flow is improved, and the turbulence is increased. After the air guide grid component and the guide plate are added, the stability of air flow can be improved. During normal operation or whole vehicle calibration, air flow enters the utility model from the air inlet 8, passes through the filter layer 6 upwards through the air inlet cavity, enters the clean air cavity 7, and enters the air outlet cavity 5 through the through holes 15 on the upper partition plate 14. The turbulent flow phenomenon is less and the laminar flow phenomenon is increased after the air flow at the guide plate 10 is guided by the arc-shaped guide plate 10. When the airflow passes through the outlet, the airflow passes through the rectification grille 12, so that the turbulence phenomenon at the air outlet 9 is further reduced, and the laminar flow phenomenon is increased. When the air flow after diversion flows downstream and the whole vehicle is calibrated, as shown in fig. 9 to 11, the turbulence energy is reduced after the utility model is adopted, the blue area range is larger, the red representative value is smaller, and the air flow fluctuation is smaller; the air mass flowmeter has more stable reading, and improves the overall performances of the automobile engine, such as dynamic property, economy, oil consumption, tail gas emission index and the like.
The above embodiments are only for illustrating the technical solution of the present utility model, and it should be understood by those skilled in the art that although the present utility model has been described in detail with reference to the above embodiments: modifications and equivalents may be made thereto without departing from the spirit and scope of the utility model, which is intended to be encompassed by the claims.
Claims (4)
1. The air filtering structure for improving the calibration stability of the whole vehicle comprises an upper shell and a lower shell which are connected up and down, wherein a lower partition plate is arranged in the lower shell, and the lower partition plate divides the lower shell into a filtering layer cavity and an air outlet cavity; the upper part of the filter layer cavity is provided with a filter layer, the filter layer and a lower shell below the filter layer enclose an air inlet cavity, and the filter layer and an upper shell above the filter layer enclose a clean air cavity;
The side wall of the air inlet cavity is connected with an air inlet, and an air outlet is arranged on a lower shell at one end part of the air outlet cavity, and the air inlet cavity is characterized in that:
The other end of the air outlet cavity is provided with a deflector which is obliquely arranged, the vertical section of the deflector is arc-shaped, one end of the deflector, which is away from the air outlet, is higher than one end of the deflector, which is towards the air outlet, the high end of the deflector is higher than the air outlet, and the low end of the deflector is towards the middle part of the air outlet.
2. The air filter structure for improving the calibration stability of a whole vehicle according to claim 1, wherein: an air guide grille component is arranged in the air outlet; the air guide grille component comprises a flat cylinder in interference fit with the inner wall of the air outlet, two ends of the axial direction of the flat cylinder are both open, and an axially-transparent rectifying grille is fixedly connected in the flat cylinder; the radial bulge at the end part of the flat cylinder is provided with a convex ring which is used for being clamped outside the inner end of the air inlet.
3. The air filter structure for improving the calibration stability of a whole vehicle according to claim 1 or 2, wherein: an upper baffle plate is arranged in the upper shell, and the upper baffle plate corresponds to the lower baffle plate and is in sealing and compression joint with the lower baffle plate; the upper partition board is provided with through holes communicated with the air outlet cavity, one or two through holes are arranged, and at least one through hole is opposite to the guide plate.
4. The air filter structure for improving the calibration stability of a whole vehicle according to claim 1, wherein: the top surface of the lower shell and the top surface of the lower partition board are provided with sealing rings which encircle the filter layer cavity and the air outlet cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322620342.0U CN221002968U (en) | 2023-09-26 | 2023-09-26 | Air filter structure for improving calibration stability of whole vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322620342.0U CN221002968U (en) | 2023-09-26 | 2023-09-26 | Air filter structure for improving calibration stability of whole vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221002968U true CN221002968U (en) | 2024-05-24 |
Family
ID=91090329
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322620342.0U Active CN221002968U (en) | 2023-09-26 | 2023-09-26 | Air filter structure for improving calibration stability of whole vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221002968U (en) |
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2023
- 2023-09-26 CN CN202322620342.0U patent/CN221002968U/en active Active
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