Low-noise and low-vibration air inlet device of engine

Abstract

The utility model relates to the technical field of automobile air inlet systems, in particular to a low-noise and low-vibration air inlet device of an engine, which comprises an air inlet pipe fitting, a mounting piece, a filter arranged in the mounting piece, an air outlet pipe fitting and a resonance component used for buffering airflow, an air inlet part and an air outlet part are respectively arranged on the mounting piece, the air inlet pipe fitting is connected with the air inlet part, and the air outlet pipe fitting is connected with the air outlet part. The air outlet pipe fitting and the resonance assembly are connected with the air outlet part. The air outlet pipe fitting and the resonance assembly are connected to the air outlet part at the same time, airflow with large impact can directly enter the resonance assembly to be buffered, the resonance assembly acts in time and is good in buffering effect, relatively gentle airflow can be output from the air outlet pipe fitting, it is guaranteed that the airflow is stable, noise and vibration generated by the airflow are reduced, and the NVH performance of the whole vehicle is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile intake systems, and more specifically, to an intake device for low noise and vibration of an engine. Background Art

[0002] The main function of the intake device of an automobile is to deliver clean, dry, sufficient and stable air to the engine to meet the needs of the engine, and at the same time prevent impurities and large particle dust in the air from entering the engine combustion chamber and causing abnormal wear of the engine; when the engine is working, the driver manipulates the opening of the throttle valve through the accelerator pedal to change the intake air volume and control the operation of the engine; the air entering the engine passes through the air filter to filter out dust and other impurities, then flows through the air flow meter, enters the power chamber along the throttle valve passage, and is then distributed to each cylinder through the intake manifold. During this process, the intake device will generate relatively large noise and vibration. Excessive noise and vibration will increase the noise in the engine compartment and the vibration of the whole vehicle, thus affecting the NVH performance of the whole vehicle. It is necessary to design a reasonable muffling element to reduce the noise and vibration generated by the intake device and improve the NVH performance of the whole vehicle. Summary of the Utility Model

[0003] The utility model aims to overcome the defect that the existing automobile intake device generates relatively large noise and vibration during operation and affects the NVH performance of the whole vehicle, and provides an intake device for low noise and vibration of an engine, which reduces the working noise and vibration of the intake device and improves the NVH performance of the whole vehicle.

[0004] To solve the above technical problems, the technical solution adopted by the utility model is: an intake device for low noise and vibration of an engine, comprising: an intake pipe member, a mounting member, a filter arranged in the mounting member, an outlet pipe member, and a resonance assembly for buffering air flow. The mounting member is respectively provided with an intake part and an outlet part. The intake pipe member is connected to the intake part, and the outlet pipe member and the resonance assembly are respectively connected to the outlet part.

[0005] External air enters from the intake pipe member, then enters the mounting member from the intake part of the mounting member, and then passes through the filter. After being filtered by the filter, it is output from the outlet part of the mounting member. The outlet part is simultaneously connected to the outlet pipe member and the resonance assembly. When the air is output, it will simultaneously enter the outlet pipe member and the resonance assembly respectively. The resonance assembly buffers the air flow, thereby stabilizing the air flow, reducing noise and vibration. The outlet pipe member is connected to the external engine. The air entering the outlet pipe member will enter the external engine, and the air entering the resonance assembly will stay in the resonance assembly or be squeezed out by the subsequent air, and then enter the external engine through the outlet pipe member. Specifically, the filter is an air filter.

[0006] Preferably, the resonance assembly includes a first pipe connected to the air outlet portion, a first resonator connected to the first pipe, and a buffer gasket. The first resonator is provided with a plurality of mounting portions, and the buffer gasket is connected to the mounting portions.

[0007] The first resonator is mounted on the vehicle frame or the mounting bracket through the mounting portions. By connecting the buffer gasket to the mounting portions, the vibration of the air flow is buffered, preventing the excessive vibration of the first resonator from being transmitted to the vehicle body, and further improving the NVH performance of the whole vehicle. Specifically, the mounting portions are generally sheet-like structures with holes. Two buffer gaskets can be provided and respectively padded on both sides of the mounting portions, or one buffer gasket can be inserted into the holes of the mounting portions. The length of the buffer gasket is greater than the thickness of the holes.

[0008] Preferably, a resonance cavity communicating with the first pipe is provided inside the first resonator. The resonance cavity includes a diffusion section connected to the first pipe and a buffer section connected to the diffusion section.

[0009] The diffusion section is used to promote the diffusion of the air flow, and the buffer section is used to block the air flow for buffering. Specifically, the cross-section of the diffusion section gradually expands from the entrance of the resonance cavity to achieve the effect of assisting the diffusion of the air flow. Further, the first resonator is integrally in a long strip shape to enhance the buffering effect.

[0010] Preferably, the first resonator includes a first housing connected to the first pipe and a second housing connected to the first housing. A plurality of the mounting portions are respectively provided on the second housing, and an avoidance portion is further provided on the first housing or the second housing.

[0011] The first housing and the second housing are connected to form the first resonator, and a resonance cavity is formed inside after connection. The first housing is connected to the first pipe, and the mounting portions are provided on the second housing and connected to the vehicle frame or the mounting bracket. Setting it as two housings is convenient for manufacturing. The avoidance portion is provided to avoid the surrounding components.

[0012] Preferably, the first pipe is a corrugated hose, and the intake pipe component and the outlet pipe component are respectively connected to the mounting component through corrugated hoses.

[0013] Setting the corrugated hose can further improve the buffering performance of the air flow and further reduce the vibration noise and vibration.

[0014] Preferably, the mounting component includes a lower housing, a middle housing connected to the lower housing, and an upper housing connected to the middle housing. The intake portion is provided on the lower housing, the outlet portion is provided on the middle housing, and the filter is installed inside the middle housing.

[0015] The air flow enters the lower housing from the air inlet part, passes through the filter during the process of passing through the middle housing, then enters the upper housing, then returns to the air outlet part of the middle housing, and is output from the air outlet part.

[0016] Preferably, it further includes a flow dividing member arranged in the air outlet part. The flow dividing member is provided with a first flow dividing port and a second flow dividing port. The first flow dividing port opens towards the air outlet pipe member, and the second flow dividing port faces the resonance assembly.

[0017] Setting the flow dividing member can play a role in stabilizing the air flow, and also reduce the noise and vibration generated by the air at the air outlet part, improving the noise reduction and vibration reduction effects.

[0018] Preferably, it further includes an abutting member arranged above the filter and the flow dividing member. The upper housing is detachably connected to the middle housing. When the upper housing is connected to the middle housing, the upper housing presses down the abutting member, and then presses down and fixes the filter and the flow dividing member.

[0019] The detachable connection between the upper housing and the middle housing facilitates the replacement of the filter. Further, the abutting member is provided to press the filter and the flow dividing member tightly, preventing the filter and the flow dividing member from vibrating, and further reducing noise and vibration.

[0020] Preferably, the lower housing is in a horn shape, and the air flow cross-sectional area at the connection between the lower housing and the middle housing is larger than the air flow cross-sectional area of the air inlet part.

[0021] The lower housing being set in a horn shape is beneficial for diffusing the air flow, improving the air flow rate, and also beneficial for the air flow to fill one side of the filter, ensuring the filtering effect.

[0022] Preferably, the air outlet pipe member is further connected with a second resonator.

[0023] After the air flow is buffered by the first resonator, it is further buffered by the second resonator, further improving the air flow buffering effect, and reducing the noise of the air intake system to the engine compartment and the vibration of the whole vehicle again, thereby further improving the NVH performance of the whole vehicle.

[0024] Compared with the prior art, the beneficial effects of the present utility model are:

[0025] 1. By connecting the air outlet pipe member and the resonance assembly to the air outlet part at the same time, the air flow with a large impact can directly enter the resonance assembly for buffering. The resonance assembly acts in a timely manner and has a good buffering effect. The relatively gentle air flow can be output from the air outlet pipe member, ensuring the stability of the air flow, reducing the noise and vibration generated by the air flow, and improving the NVH performance of the whole vehicle;

[0026] 2. A second resonator is further provided on the air outlet pipe member, and the air flow can be buffered once again before entering the external engine, further improving the noise reduction and vibration reduction effects;

[0027] 3. The upper shell and the middle shell of the installation part are detachably connected, which is convenient for replacing the filter. Further, the filter is pressed tightly by the abutting part to avoid the generation of gaps between the filter and the middle shell due to vibration, ensuring the filtering effect and also improving the installation stability of the filter and the shunt part, and preventing vibration between the two. Description of the Drawings

[0028] Figure 1 is a schematic diagram of the overall structure of an intake device for low noise and vibration of an engine of the present utility model;

[0029] Figure 2 is a schematic diagram of the installation structure of the filter, shunt part and abutting part of an intake device for low noise and vibration of an engine of the present utility model;

[0030] Figure 3 is an exploded view of the installation part of an intake device for low noise and vibration of an engine of the present utility model;

[0031] Figure 4 is a schematic diagram of the internal structure of the first resonator of an intake device for low noise and vibration of an engine of the present utility model.

[0032] In the figures: 1, intake pipe part; 2, installation part; 201, intake part; 202, outlet part; 203, lower shell; 204, middle shell; 205, upper shell; 3, filter; 4, outlet pipe part; 5, resonance assembly; 501, first pipe; 502, first resonator; 5021, installation part; 5022, diffusion section; 5023, buffer section; 5024, first shell; 5025, second shell; 5026, avoidance part; 503, buffer gasket; 6, shunt part; 7, abutting part; 8, second resonator. Detailed Embodiments

[0033] The drawings are only for illustrative purposes and should not be construed as limitations on this patent; for better illustration of this embodiment, some components in the drawings are omitted, enlarged or reduced, which do not represent the dimensions of the actual product; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted. The positional relationships described in the drawings are only for illustrative purposes and should not be construed as limitations on this patent.

[0034] In the accompanying drawings of the embodiments of the present utility model, the same or similar reference numerals correspond to the same or similar components; in the description of the present utility model, it should be understood that if there are terms such as "upper", "lower", "left", "right", "long", "short", etc. indicating the orientation or positional relationship, they are based on the orientation or positional relationship shown in the accompanying drawings. This is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the terms describing the positional relationship in the accompanying drawings are only for illustrative purposes and cannot be construed as a limitation of this patent. For those of ordinary skill in the art, the specific meanings of the above terms can be understood according to specific circumstances.

[0035] The technical solution of the present utility model will be further specifically described below through specific embodiments in conjunction with the accompanying drawings:

[0036] Embodiment 1

[0037] As Figure 1-2 shown, an intake device for low noise and vibration of an engine includes: an intake pipe member 1, a mounting member 2, a filter 3 provided in the mounting member 2, an outlet pipe member 4, and a resonance component 5 for buffering air flow. An intake part 201 and an outlet part 202 are respectively provided on the mounting member 2. The intake pipe member 1 is connected to the intake part 201, and the outlet pipe member 4 and the resonance component 5 are respectively connected to the outlet part 202.

[0038] External air enters from the intake pipe member 1, then enters the mounting member 2 from the intake part 201 of the mounting member 2, and then passes through the filter 3. After being filtered by the filter 3, it is output from the outlet part 202 of the mounting member 2. The outlet part 202 is simultaneously connected to the outlet pipe member 4 and the resonance component 5. When the air is output, it will enter the outlet pipe member 4 and the resonance component 5 respectively at the same time. The resonance component 5 buffers the air flow, thereby stabilizing the air flow, reducing noise and vibration. The outlet pipe member 4 is connected to the external engine. The air entering the outlet pipe member 4 will enter the external engine. The air entering the resonance component 5 will stay in the resonance component 5 or be squeezed out by the subsequent air, and then enter the external engine through the outlet pipe member 4. Specifically, the filter 3 is an air filter.

[0039] The beneficial effects of this embodiment: By connecting the outlet pipe member 4 and the resonance component 5 to the outlet part 202 at the same time, the air flow with a large impact can directly enter the resonance component 5 for buffering. The resonance component 5 acts in a timely manner and has a good buffering effect. The relatively gentle air flow can be output from the outlet pipe member 4, ensuring the stability of the air flow, reducing the noise and vibration generated by the air flow, and improving the NVH performance of the whole vehicle.

[0040] Embodiment 2

[0041] Based on Embodiment 1, the difference from Embodiment 1 is:

[0042] As Figure 1 and Figure 4 shown, the resonance assembly 5 includes a first pipe 501 connected to the air outlet part 202, a first resonator 502 connected to the first pipe 501, and a buffer gasket 503. A plurality of mounting parts 5021 are provided on the first resonator 502, and the buffer gasket 503 is connected to the mounting parts 5021. As Figure 4 shown, a resonance cavity communicating with the first pipe 501 is provided inside the first resonator 502. The resonance cavity includes a diffusion section 5022 connected to the first pipe 501 and a buffer section 5023 connected to the diffusion section 5022. The first resonator 502 includes a first housing 5024 connected to the first pipe 501 and a second housing 5025 connected to the first housing 5024. A plurality of mounting parts 5021 are respectively arranged on the second housing 5025, and an avoidance part 5026 is further provided on the first housing 5024 or the second housing 5025.

[0043] The first resonator 502 is installed on the vehicle frame or the mounting bracket through the mounting parts 5021. By connecting the buffer gasket 503 to the mounting parts 5021, the vibration of the air flow is buffered, avoiding excessive transmission of the vibration of the first resonator 502 to the vehicle body, and further improving the NVH performance of the whole vehicle. Specifically, the mounting parts 5021 are generally provided as sheet-like structures with holes. Two buffer gaskets 503 can be provided and respectively padded on both sides of the mounting parts 5021, or one buffer gasket 503 can be inserted into the holes of the mounting parts 5021. The length of the buffer gasket 503 is greater than the thickness of the holes. The diffusion section 5022 is used to promote the diffusion of the air flow, and the buffer section 5023 is used to block the air flow for buffering. Specifically, the cross-section of the diffusion section 5022 gradually expands from the entrance of the resonance cavity to achieve the function of assisting the diffusion of the air flow. Further, the first resonator 502 is integrally long strip-shaped to enhance the buffering effect. The first housing 5024 and the second housing 5025 are connected to form the first resonator 502. After being connected, a resonance cavity is formed inside. The first housing 5024 is connected to the first pipe 501, and the mounting parts 5021 are arranged on the second housing 5025 and connected to the vehicle frame or the mounting bracket. It is convenient for manufacturing and production to be provided as two housings, and the avoidance part 5026 is provided for avoiding the surrounding components.

[0044] The remaining features and working principles of this embodiment are the same as those of Embodiment 1.

[0045] Embodiment 3

[0046] Based on Embodiment 1 or Embodiment 2, further limitations are imposed on Embodiment 1 or Embodiment 2. The difference lies in:

[0047] As Figure 1As shown, the first pipe 501 is a corrugated hose, and both the intake pipe fitting 1 and the exhaust pipe fitting 4 are respectively connected to the mounting member 2 through corrugated hoses. As Figure 1 and Figure 3 shown, the mounting member 2 includes a lower housing 203, a middle housing 204 connected to the lower housing 203, and an upper housing 205 connected to the middle housing 204. The intake part 201 is arranged on the lower housing 203, the exhaust part 202 is arranged on the middle housing 204, and the filter 3 is installed in the middle housing 204. It also includes a flow dividing member 6 arranged in the exhaust part 202. The flow dividing member 6 is provided with a first flow dividing port and a second flow dividing port. The first flow dividing port opens towards the exhaust pipe fitting 4, and the second flow dividing port faces the resonance assembly 5. It also includes an abutting member 7 arranged above the filter 3 and the flow dividing member 6. The upper housing 205 is detachably connected to the middle housing 204. When the upper housing 205 is connected to the middle housing 204, the upper housing 205 presses down the abutting member 7, and then presses down and fixes the filter 3 and the flow dividing member 6. The lower housing 203 is in a trumpet shape, and the cross-sectional area of the airflow at the connection between the lower housing 203 and the middle housing 204 is larger than the cross-sectional area of the airflow at the intake part 201. The exhaust pipe fitting 4 is also connected to a second resonator 8.

[0048] Setting the corrugated hose can further improve the buffering performance of the airflow and further reduce the vibration noise and vibration. The airflow enters the lower housing 203 from the intake part 201, passes through the filter 3 during the process of passing through the middle housing 204, then enters the upper housing 205, and then returns to the exhaust part 202 of the middle housing 204, and is then output from the exhaust part 202. Setting the flow dividing member 6 can play a role in stabilizing the airflow, and also reduce the noise and vibration generated by the air at the exhaust part 202, improving the noise reduction and vibration reduction effects. The upper housing 205 is detachably connected to the middle housing 204, which is convenient for replacing the filter 3. Further, the abutting member 7 is provided to press the filter 3 and the flow dividing member 6 to prevent the filter 3 and the flow dividing member 6 from vibrating, and further reduce the noise and vibration. The lower housing 203 is set in a trumpet shape, which is beneficial to diffusing the airflow, increasing the airflow rate, and also beneficial to the airflow filling one side of the filter 3 to ensure the filtering effect. After the airflow is buffered by the first resonator 502, it is further buffered by the second resonator 8, further improving the airflow buffering effect, and further reducing the noise of the intake system to the engine compartment and the vibration of the whole vehicle, thereby further improving the NVH performance of the whole vehicle.

[0049] As Figure 1-2 shown, in this embodiment, the second resonator 8 is arranged at one end of the exhaust pipe fitting 4 away from the mounting member 2, and an engine return pipe is also connected to this end.

[0050] The remaining working principles and working processes of this embodiment are the same as those of Embodiment 1 or Embodiment 2.

[0051] In the specific content of the above specific embodiments, the technical features can be combined arbitrarily without contradiction. For the sake of brevity of description, not all possible combinations of the above technical features are described. However, as long as the combinations of these technical features do not conflict, they should all be considered to be within the scope described in this specification.

[0052] Obviously, the above embodiments of the present invention are merely examples given to clearly illustrate the present invention, rather than limitations on the embodiments of the present invention. For those of ordinary skill in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to enumerate all the embodiments here. Any modifications, equivalent replacements, and improvements made within the spirit and principles of the present invention shall be included within the protection scope of the claims of the present invention.

Claims

1. An intake device for low noise and vibration of an engine, characterized in that, Comprising: An intake pipe fitting (1), a mounting member (2), a filter (3) disposed within the mounting member (2), an outlet pipe fitting (4), and a resonance assembly (5) for buffering air flow. The mounting member (2) is respectively provided with an intake portion (201) and an outlet portion (202). The intake pipe fitting (1) is connected to the intake portion (201), and the outlet pipe fitting (4) and the resonance assembly (5) are respectively connected to the outlet portion (202).

2. The intake device for reducing engine noise and vibration according to claim 1, characterized in that: The resonance assembly (5) includes a first pipe (501) connected to the outlet portion (202), a first resonator (502) connected to the first pipe (501), and a buffer gasket (503). A plurality of mounting portions (5021) are provided on the first resonator (502), and the buffer gasket (503) is connected to the mounting portions (5021).

3. The intake device for low noise and vibration of an engine according to claim 2, characterized in that: A resonance cavity communicating with the first pipe (501) is provided inside the first resonator (502). The resonance cavity includes a diffusion section (5022) connected to the first pipe (501) and a buffer section (5023) connected to the diffusion section (5022).

4. The intake device for low noise and vibration of an engine according to claim 2, characterized in that: The first resonator (502) includes a first housing (5024) connected to the first pipe (501) and a second housing (5025) connected to the first housing (5024). A plurality of the mounting portions (5021) are respectively disposed on the second housing (5025), and an avoidance portion (5026) is further provided on the first housing (5024) or the second housing (5025).

5. An intake device for reducing engine noise and vibration according to claim 2, characterized in that: The first pipe (501) is a corrugated hose, and the intake pipe fitting (1) and the outlet pipe fitting (4) are respectively connected to the mounting member (2) through corrugated hoses.

6. An intake device for an engine with low noise and vibration according to claim 1, characterized in that: The mounting member (2) includes a lower housing (203), a middle housing (204) connected to the lower housing (203), and an upper housing (205) connected to the middle housing (204). The intake portion (201) is provided on the lower housing (203), the outlet portion (202) is provided on the middle housing (204), and the filter (3) is installed within the middle housing (204).

7. The low noise and vibration intake device for an engine according to claim 6, characterized in that: It further includes a flow splitting member (6) disposed within the outlet portion (202). The flow splitting member (6) is provided with a first flow splitting port and a second flow splitting port. The first flow splitting port opens towards the outlet pipe fitting (4), and the second flow splitting port faces the resonance assembly (5).

8. An intake device for reducing engine noise and vibration according to claim 7, characterized in that: It further includes an abutting member (7) disposed above the filter (3) and the flow splitting member (6). The upper housing (205) is detachably connected to the middle housing (204). When the upper housing (205) is connected to the middle housing (204), the upper housing (205) presses down the abutting member (7) and further presses down and fixes the filter (3) and the flow splitting member (6).

9. The intake device for low noise and vibration of an engine according to claim 6, characterized in that: The lower housing (203) is in a trumpet shape, and the air flow cross-sectional area at the connection of the lower housing (203) and the middle housing (204) is larger than the air flow cross-sectional area of the intake portion (201).

10. An intake device for reducing engine noise and vibration according to any one of claims 1-9, characterized in that: The air outlet pipe (4) is also connected to a second resonator (8).

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