CN220909864U - Engine air inlet pipe assembly and vehicle - Google Patents

Abstract

The utility model relates to an engine intake pipe assembly and vehicle, this engine intake pipe assembly includes intake pipe body, resonant structure and helmholtz silencer, this internal air inlet chamber that is formed with of intake pipe, be formed with air inlet and gas outlet on the intake pipe body, air inlet and gas outlet all communicate with the air inlet chamber, the gas outlet is used for supplying air to the engine, resonant structure connects in the intake pipe body, be formed with the resonant cavity in the resonant structure, resonant cavity and air inlet chamber intercommunication, helmholtz silencer installs on the intake pipe body and helmholtz silencer's inside communicates with the air inlet chamber. The engine air inlet pipe assembly can attenuate vibration noise generated by resonance of the engine and the engine air inlet pipe assembly so as to ensure driving comfort of a driver.

Description

Engine air inlet pipe assembly and vehicle

Technical Field

The disclosure relates to the technical field of automobile air intake, in particular to an engine air intake pipe assembly and a vehicle.

Background

The air intake duct is an important component of the air intake system of an automotive engine, and is responsible for intake air routing, dust and moisture prefiltering, providing relatively clean air to the air filter assembly, and into the engine after passing through the air filter.

While the vehicle is traveling, various dynamic noises are generated. At the moment of releasing the accelerator pedal, the throttle valve of the engine is closed, so that gas flowing towards the engine flows backwards, the engine vibrates, resonance between the engine and the air inlet pipe is caused, noise is generated, and the driving comfort of a driver is affected. However, in the related technical scheme, only the resonant cavity is arranged to eliminate noise, and only noise in a certain frequency range can be attenuated, so that the effect is poor.

Disclosure of utility model

The disclosure provides an engine air inlet pipe assembly and a vehicle, so as to solve the technical problems in the related art.

To achieve the above object, the present disclosure provides an engine intake pipe assembly including:

The air inlet pipe body is internally provided with an air inlet cavity, the air inlet pipe body is provided with an air inlet and an air outlet, the air inlet and the air outlet are both communicated with the air inlet cavity, and the air outlet is used for supplying air to an engine;

the resonant structure is connected to the air inlet pipe body, a resonant cavity is formed in the resonant structure, and the resonant cavity is communicated with the air inlet cavity; and

And the Helmholtz silencer is arranged on the air inlet pipe body, and the interior of the Helmholtz silencer is communicated with the air inlet cavity.

Optionally, the communication position of the resonant cavity and the air inlet cavity is close to the air outlet, and the communication position of the inner part of the Helmholtz silencer and the air inlet cavity is close to the air outlet.

Optionally, the air inlet cavity includes first cavity and second cavity, the air inlet with the top intercommunication of first cavity, the gas outlet with the bottom intercommunication of first cavity, the second cavity is located the lateral part of first cavity and with the bottom intercommunication of first cavity, the resonant cavity is located the lateral part of first cavity and is located the top of second cavity, the bottom of resonant cavity with the second cavity intercommunication, still be formed with the drain on the intake pipe body, the drain with the second cavity intercommunication.

Optionally, the engine air inlet pipe assembly further comprises a connecting pipe, the connecting pipe is connected with the air outlet and provided with an extending section extending into the air inlet cavity, a gap is formed between the outer peripheral surface of the extending section and the cavity wall of the air inlet cavity, and the communication position between the inner part of the Helmholtz silencer and the air inlet cavity is located above the extending section.

Optionally, be provided with first linking bridge and second linking bridge on the intake pipe body, first linking bridge with the second linking bridge all is used for being connected with the automobile body of vehicle, first linking bridge is close to the air inlet sets up, the second linking bridge is close to the gas outlet sets up.

Optionally, the first connecting bracket and the second connecting bracket are both provided with shock pads.

Optionally, the resonant structure is provided with a reinforcing rib.

Optionally, the air inlet pipe body and the resonance structure are integrally formed.

Optionally, the helmholtz silencer is welded to the intake pipe body.

According to a second aspect of the present disclosure, there is also provided a vehicle including:

a vehicle body; and

The engine air inlet pipe assembly is arranged below the automobile body.

By the technical scheme, the throttle valve of the engine is closed, so that gas flowing towards the engine flows backwards, the engine vibrates, and resonance of the engine and the engine air inlet pipe assembly is caused, and vibration noise is generated. When vibration noise propagates in the air inlet cavity, the vibration noise can enter the resonant cavity and the Helmholtz silencer respectively because the resonant cavity and the Helmholtz silencer are communicated with the air inlet cavity, and the vibration noise can be reflected by utilizing abrupt changes of cross sections at the communication position of the resonant cavity and the air inlet cavity and the communication position of the Helmholtz silencer and the air inlet cavity so as to attenuate the vibration noise; and after the vibration noise enters the resonant cavity and the Helmholtz silencer respectively, helmholtz resonance phenomenon occurs through reflection and absorption of the inner wall of the resonant cavity and a resonance component in the Helmholtz silencer, the vibration noise can be further attenuated, the purpose of noise reduction and noise elimination is achieved, and driving comfort of a driver is further guaranteed.

Because resonant cavity structure and helmholtz silencer's structure are different, the resonant cavity can attenuate the vibration noise in the first frequency range, and helmholtz silencer can attenuate the vibration noise in the second frequency range to can widen the noise elimination frequency range of engine intake pipe assembly that this disclosure provided, improve noise elimination effect.

Additional features and advantages of the present disclosure will be set forth in the detailed description which follows.

Drawings

The accompanying drawings are included to provide a further understanding of the disclosure, and are incorporated in and constitute a part of this specification, illustrate the disclosure and together with the description serve to explain, but do not limit the disclosure. In the drawings:

FIG. 1 is a schematic perspective view of an engine air intake assembly provided in an exemplary embodiment of the present disclosure;

FIG. 2 is a side view of an engine air intake assembly provided in an exemplary embodiment of the present disclosure;

FIG. 3 is a schematic partial cut-away view of an engine air intake assembly provided in an exemplary embodiment of the disclosure.

Description of the reference numerals

1. An intake pipe body; 2. an air inlet cavity; 201. a first chamber; 202. a second chamber; 2021. a first flow passage; 2022. a second flow passage; 3. an air inlet; 4. an air outlet; 5. a resonant structure; 501. a horizontal portion; 502. a vertical portion; 6. a resonant cavity; 7. a Helmholtz muffler; 8. a sewage outlet; 9. a connecting pipe; 901. a stretch-in section; 10. a gap; 11. a first connection bracket; 12. a second connection bracket; 13. a shock pad; 14. reinforcing ribs.

Detailed Description

Specific embodiments of the present disclosure are described in detail below with reference to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating and illustrating the disclosure, are not intended to limit the disclosure.

In this disclosure, unless otherwise indicated, terms such as "upper, lower, top, bottom" are used to generally define the normal mounting position of an engine air intake assembly, "inner" and "outer" refer to the inner and outer of the profile of the corresponding component, and the terms "first", "second", etc. are used for the purpose of distinguishing between the different components and are not sequential or significant.

As shown in fig. 1 to 3, the present disclosure provides an air intake pipe assembly of an engine, including an air intake pipe body 1, a resonance structure 5 and a helmholtz silencer 7, an air intake cavity 2 is formed in the air intake pipe body 1, an air inlet 3 and an air outlet 4 are formed on the air intake pipe body 1, the air inlet 3 and the air outlet 4 are both communicated with the air intake cavity 2, the air outlet 4 is used for supplying air to the engine, the resonance structure 5 is connected to the air intake pipe body 1, a resonance cavity 6 is formed in the resonance structure 5, the resonance cavity 6 is communicated with the air intake cavity 2, the helmholtz silencer 7 is mounted on the air intake pipe body 1, and the interior of the helmholtz silencer 7 is communicated with the air intake cavity 2.

By the technical scheme, the throttle valve of the engine is closed, so that gas flowing towards the engine flows backwards, the engine vibrates, and resonance of the engine and the engine air inlet pipe assembly is caused, and vibration noise is generated. When vibration noise propagates in the air inlet cavity 2, since the interiors of the resonant cavity 6 and the Helmholtz silencer 7 are communicated with the air inlet cavity 2, the vibration noise can enter the resonant cavity 6 and the Helmholtz silencer 7 respectively, and the vibration noise can be reflected by utilizing the abrupt change of the cross section at the position where the resonant cavity 6 is communicated with the air inlet cavity 2 and the position where the Helmholtz silencer 7 is communicated with the air inlet cavity 2 so as to attenuate the vibration noise; and after the vibration noise respectively enters the resonant cavity 6 and the Helmholtz silencer 7, helmholtz resonance phenomenon occurs through reflection and absorption of the inner wall of the resonant cavity 6 and resonance components in the Helmholtz silencer 7, so that the vibration noise can be further attenuated, the purpose of noise reduction and noise elimination is achieved, and the driving comfort of a driver is further guaranteed.

Because resonant cavity 6 structure and helmholtz silencer 7's structure are different, resonant cavity 6 can attenuate the vibration noise in the first frequency range, and helmholtz silencer 7 can attenuate the vibration noise in the second frequency range to can widen the noise elimination frequency range of engine intake pipe assembly that this disclosure provided, improve the noise elimination effect. For example, in the present disclosure, the first frequency range may be 60Hz to 80Hz and the second frequency range may be 660Hz to 780Hz.

It will be appreciated that when the air inlet 3 is in air, air intake noise may also be generated in the air intake chamber 2, and the resonant cavity 6 and the helmholtz silencer 7 are designed to eliminate the air intake noise.

In addition, the resonance structure 5 and the Helmholtz silencer 7 are both arranged on the air inlet pipe body 1, so that the integration of the air inlet pipe assembly of the engine can be improved, and the structure is compact.

In order to better reduce the vibration noise generated by resonance of the engine and the air inlet pipe caused by the reverse flow of the air flowing towards the engine, optionally, the communication position between the resonant cavity 6 and the air inlet cavity 2 is arranged close to the air outlet 4, and the communication position between the interior of the Helmholtz silencer 7 and the air inlet cavity 2 is arranged close to the air outlet 4. So arranged, after being transferred into the air inlet cavity 2 through the air outlet 4, the vibration noise can enter the resonant cavity 6 and the Helmholtz silencer 7 respectively more quickly to reduce noise.

In addition, because of the relatively narrow space for installing the engine intake pipe assembly in the front compartment of the automobile, in order to facilitate integration of the resonant cavity 6 on the engine intake pipe assembly, as an exemplary embodiment, as shown in fig. 1, the intake pipe body 1 is constructed in an arc-shaped structure extending obliquely downward from the intake port 3 to the exhaust port 4, and the resonant structure 5 is constructed in an L-shaped structure including a horizontal portion 501 and a vertical portion 502 communicating with each other; the vertical portion 502 of the resonance structure 5 is attached to the intake pipe body 1, and the extending direction of the vertical portion 502 of the resonance structure 5 is approximately the same as the extending direction of the intake pipe body 1, and the horizontal portion 501 of the resonance structure 5 is attached to the upper portion of the intake port 3 of the intake pipe body 1, so that the shape of the resonance structure 5 is matched with the shape of the intake pipe body 1, and the space for installing the intake pipe assembly of the engine is saved. In addition, the resonant cavity 6 may also be configured into an L-shaped structure with the resonant structure 5, and the bottom of the vertical portion 502 of the resonant structure 5 is communicated with the air inlet cavity 2, so that a path through which noise passes after entering the resonant cavity 6 is long enough, and an effect of reducing the noise can be further achieved.

Alternatively, the intake pipe body 1 and the resonance structure 5 may be manufactured in one piece, so that the number of connectors for connecting the intake pipe body 1 and the resonance structure 5 may be reduced, saving materials, reducing costs, and reducing assembly processes. As an exemplary embodiment, the air inlet pipe body 1 and the resonant structure 5 may be integrally formed by blow molding, so that the problem of leakage of air at the communication point of the air inlet pipe body 1 and the resonant cavity 6 may be avoided, thereby improving the air tightness of the air inlet pipe assembly of the engine.

Alternatively, the Helmholtz silencer 7 may be welded to the intake pipe body 1, and the number of connectors for connecting the intake pipe body 1 to the Helmholtz silencer 7 may be reduced, which saves materials, reduces costs, and reduces assembly processes. As an exemplary embodiment, the intake pipe body 1 and the helmholtz silencer 7 may be welded together by spin friction welding or vibration friction welding, so as to facilitate integration of the helmholtz silencer 7 with the intake pipe body 1.

Since the engine intake manifold assembly is in the process of intake, air flow may carry dust and water into the intake chamber 2 through the intake port 3, in order to remove dust and water entering the engine intake manifold assembly, dust and water entering the engine is reduced. Optionally, as shown in fig. 3, the air inlet cavity 2 includes a first chamber 201 and a second chamber 202, the air inlet 3 is communicated with the top of the first chamber 201, the air outlet 4 is communicated with the bottom of the first chamber 201, the second chamber 202 is located at the side of the first chamber 201 and is communicated with the bottom of the first chamber 201, the resonant cavity 6 is located at the side of the first chamber 201 and is located at the top of the second chamber 202, the bottom of the resonant cavity 6 is communicated with the second chamber 202, a drain outlet 8 is further formed on the air inlet pipe body 1, and the drain outlet 8 is communicated with the second chamber 202. Thereby, the air flow carries dust and water into the first chamber 201 through the air inlet 3 and can enter the second chamber 202 and be discharged through the drain 8, thereby reducing the entry of dust and water from the first chamber 201 into the engine through the air outlet 4.

Also, since the resonant cavity 6 is located at the side of the first chamber 201 and at the top of the second chamber 202, the bottom of the resonant cavity 6 communicates with the second chamber 202, that is, the communication between the resonant cavity 6 and the second chamber 202 is located above the second chamber 202, the air flow introduced into the second chamber 202 flows upward into the resonant cavity 6, so that dust and water introduced into the resonant cavity 6 can be reduced. In addition, dust and water brought into the resonant cavity 6 by the air flow can flow into the second cavity 202 under the action of gravity and can be directly discharged through the sewage outlet 8, so that the resonant cavity 6 and the air inlet cavity 2 can share the sewage outlet 8, the number of the sewage outlets 8 is reduced, and the integration level of the air inlet pipe of the engine is improved.

Alternatively, the helmholtz muffler 7 may be in communication with the first chamber 201 or in communication with the second chamber 202, which is not limited by the present disclosure.

In order to further reduce the entry of dust and water in the intake chamber 2 into the engine, optionally, as shown in fig. 3, the engine intake pipe assembly further includes a connection pipe 9, the connection pipe 9 being connected to the air outlet 4 and having an extension section 901 extending into the intake chamber 2, a gap 10 being provided between an outer peripheral surface of the extension section 901 and a chamber wall of the intake chamber 2, and a communication position between an interior of the helmholtz muffler 7 and the intake chamber 2 being located above the extension section 901. The dust and water entering the air inlet chamber 2 can be blocked in the above-mentioned gap 10 by the extending section 901 extending into the air inlet chamber 2, thereby reducing the dust and water entering the engine through the air outlet 4. Further, by locating the communication position between the interior of the Helmholtz silencer 7 and the intake chamber 2 above the extension 901, it is possible to reduce the entry of dust and water into the interior of the Helmholtz silencer 7 through the gap 10.

In order to discharge dust and water deposited in the gap 10 between the outer circumferential surface of the extension 901 and the wall of the air inlet chamber 2, as an exemplary embodiment, as shown in fig. 3, the connection pipe 9 extends into the first chamber 201 described above, and the gap 10 is provided between the outer circumferential surface of the extension 901 and the wall of the first chamber 201, and the second chamber 202 communicates with the gap 10, that is, dust and water deposited in the gap 10 may be introduced into the second chamber 202 by the air flow and discharged through the drain 8.

Alternatively, as shown in fig. 3, the second chamber 202 may include a first flow path 2021 and a second flow path 2022, the first flow path 2021 and the second flow path 2022 are communicated with each other and form an L-shape, the first flow path 2021 extends in a horizontal direction, and an end of the first flow path 2021 away from the second flow path 2022 communicates with a bottom of the above-mentioned gap 10, the second flow path 2022 extends in a vertical direction, and an end of the second flow path 2022 away from the first flow path 2021 is a drain 8, and a height of the drain 8 is lower than the bottom of the above-mentioned gap 10, so that dust and water deposited in the gap 10 can be discharged from the second chamber 202 through the drain 8 as much as possible.

In addition, in order to prevent external dust from being sucked into the second chamber 202 through the drain outlet 8, as an exemplary embodiment, the drain outlet 8 is communicated with a duckbill valve, and the outlet cross-sectional area of the drain outlet 8 can be reduced by the arrangement of the duckbill valve, so that the external dust is effectively prevented from being sucked into the second chamber 202 through the drain outlet 8 under the condition that the dust and water in the second chamber 202 are ensured to be discharged from the drain outlet 8.

In the present disclosure, in order to facilitate the connection of the intake pipe body 1 to the vehicle body, optionally, the intake pipe body 1 is provided with a first connection bracket 11 and a second connection bracket 12, and the first connection bracket 11 and the second connection bracket 12 are both used for connection with the vehicle body of the vehicle. Since the air inlet 3 is relatively large in the air inlet and the air outlet 4 is in the air outlet, in order to reduce the shake experienced by the air inlet pipe body 1, for example, in an exemplary embodiment provided by the present disclosure, the first connection bracket 11 is disposed near the air inlet 3, and the second connection bracket 12 is disposed near the air outlet 4.

Optionally, the first connecting bracket 11 and the second connecting bracket 12 are respectively provided with a shock pad 13, and the shock pads 13 are respectively arranged at the connection position of the first connecting bracket 11 and the vehicle body and the connection position of the second connecting bracket 12 and the vehicle body, so that direct transmission of vibration between the first connecting bracket 11 and the vehicle body and between the second connecting bracket 12 and the vehicle body is avoided, vibration noise is effectively reduced, and driving comfort is improved.

In addition to this, in order to increase the structural strength of the resonant structure 5, the resonant structure 5 is optionally provided with reinforcing ribs 14. By the provision of the reinforcing ribs 14, the structural strength and the service life of the resonant cavity 6 can be improved. As an exemplary embodiment, a plurality of reinforcing ribs 14 are provided on the resonant structure 5 at intervals along the extending direction of the resonant structure 5. Of course, in order to enhance the structural strength of the intake pipe body 1, a plurality of reinforcing ribs 14 may be provided at intervals along the extending direction of the intake pipe body 1.

According to a second aspect of the present disclosure, the present disclosure also provides a vehicle including a vehicle body and the engine air intake assembly described above.

The preferred embodiments of the present disclosure have been described in detail above with reference to the accompanying drawings, but the present disclosure is not limited to the specific details of the embodiments described above, and various simple modifications may be made to the technical solutions of the present disclosure within the scope of the technical concept of the present disclosure, and all the simple modifications belong to the protection scope of the present disclosure.

In addition, the specific features described in the foregoing embodiments may be combined in any suitable manner, and in order to avoid unnecessary repetition, the present disclosure does not further describe various possible combinations.

Moreover, any combination between the various embodiments of the present disclosure is possible as long as it does not depart from the spirit of the present disclosure, which should also be construed as the disclosure of the present disclosure.

Claims (10)

1. An engine air intake assembly, comprising:

The air inlet pipe body is internally provided with an air inlet cavity, the air inlet pipe body is provided with an air inlet and an air outlet, the air inlet and the air outlet are both communicated with the air inlet cavity, and the air outlet is used for supplying air to an engine;

the resonant structure is connected to the air inlet pipe body, a resonant cavity is formed in the resonant structure, and the resonant cavity is communicated with the air inlet cavity; and

And the Helmholtz silencer is arranged on the air inlet pipe body, and the interior of the Helmholtz silencer is communicated with the air inlet cavity.

2. The engine air intake assembly of claim 1, wherein the resonant cavity is positioned in communication with the air intake cavity proximate the air outlet, and wherein the helmholtz muffler is positioned in communication with the air intake cavity proximate the air outlet.

3. The engine air intake assembly of claim 1, wherein the air intake cavity comprises a first chamber and a second chamber, the air inlet communicates with the top of the first chamber, the air outlet communicates with the bottom of the first chamber, the second chamber is located at a side portion of the first chamber and communicates with the bottom of the first chamber, the resonant cavity is located at a side portion of the first chamber and at the top of the second chamber, the bottom of the resonant cavity communicates with the second chamber, and a drain is further formed on the air intake body and communicates with the second chamber.

4. The engine intake pipe assembly according to claim 1, further comprising a connection pipe connected to the air outlet and having an extension section extending into the intake chamber, a gap being provided between an outer peripheral surface of the extension section and a chamber wall of the intake chamber, a communication position between an interior of the helmholtz silencer and the intake chamber being located above the extension section.

5. The engine air intake assembly of claim 1, wherein the air intake body is provided with a first connection bracket and a second connection bracket, the first connection bracket and the second connection bracket are both configured to be connected to a body of a vehicle, the first connection bracket is disposed proximate to the air inlet, and the second connection bracket is disposed proximate to the air outlet.

6. The engine air intake assembly of claim 5, wherein the first and second connection brackets are each provided with a shock pad.

7. The engine air intake assembly according to any one of claims 1-6, wherein the resonant structure is provided with a reinforcing rib.

8. The engine air intake assembly according to any one of claims 1-6, wherein the air intake body is integrally formed with the resonant structure.

9. The engine air intake assembly according to any one of claims 1-6, wherein the helmholtz muffler is welded to the air intake body.

10. A vehicle, characterized by comprising:

a vehicle body; and

An engine air intake assembly according to any one of claims 1 to 9.