CN218934580U - Structure for reducing air inlet noise of engine - Google Patents
Structure for reducing air inlet noise of engine Download PDFInfo
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- CN218934580U CN218934580U CN202320078114.2U CN202320078114U CN218934580U CN 218934580 U CN218934580 U CN 218934580U CN 202320078114 U CN202320078114 U CN 202320078114U CN 218934580 U CN218934580 U CN 218934580U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
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Abstract
The utility model discloses a structure for reducing air intake noise of an engine, which comprises an air filter and an air intake assembly, wherein the air intake assembly comprises an air inlet pipe, a corrugated pipe, a first throttle pipe and a second throttle pipe, and an air outlet of the air inlet pipe is connected with an air inlet of the air filter through the corrugated pipe; the first throttle pipe is arranged on the air inlet of the air inlet pipe, the first throttle pipe is provided with a first reducing pipe section and a first constant diameter pipe section, the first constant diameter pipe section is connected with the small diameter end of the first reducing pipe section, and the periphery of the first reducing pipe section is connected with the air inlet of the air inlet pipe; the second throttle pipe is arranged on the air inlet of the air filter, the second throttle pipe is provided with a second reducing pipe section and a second equal diameter pipe section, the second equal diameter pipe section is connected with the small caliber end of the second reducing pipe section, and the large caliber end of the second reducing pipe section is connected with the air inlet of the air filter. By adopting the utility model, the high-frequency noise from the air inlet channel can be effectively reduced, the attenuation of the air filter is further improved, and the performance of the engine air inlet noise is further reduced.
Description
Technical Field
The utility model relates to the technical field of engine air filters, in particular to a structure for reducing engine air intake noise.
Background
At present, vehicles are increasingly commonly incorporated into the life of ordinary households. Noise and vibration quality (NVH) of the whole vehicle is also becoming more important. Air intake system noise is one of the main sources of noise in a vehicle. The engine air intake system mainly comprises an air filter (also called an air filter for short) and an air intake manifold, wherein the air filter is mainly used for filtering air entering the engine so as to filter impurities in the air, clean air is conveyed into the air intake manifold, and then the clean air is distributed to each cylinder body through the air intake manifold. Besides the function of filtering air, the air filter can also utilize the resonant cavity to achieve the purpose of attenuating and reducing the air intake noise of the engine.
However, when the intake noise comes from the intake passage (i.e., the passage through which air enters the air filter) and belongs to high-frequency noise, it is difficult to achieve the purpose of reducing the intake noise by the technical means of the resonant cavity, and therefore, a new structure is required to reduce the intake noise.
Disclosure of Invention
The purpose of the utility model is that: provided is an engine intake noise reduction structure capable of effectively reducing high-frequency noise from an intake passage.
In order to achieve the above object, the present utility model provides a structure for reducing intake noise of an engine, comprising an air filter and an intake assembly, wherein the intake assembly comprises an intake pipe, a corrugated pipe, a first throttle pipe and a second throttle pipe, and an air outlet of the intake pipe is connected with an air inlet of the air filter through the corrugated pipe; the first throttle pipe is arranged on the air inlet of the air inlet pipe, the first throttle pipe is provided with a first reducing pipe section and a first equal-diameter pipe section, the first equal-diameter pipe section is connected with the small-diameter end of the first reducing pipe section, and the periphery of the first reducing pipe section is connected with the air inlet of the air inlet pipe; the second throttle pipe is arranged on the air inlet of the air filter, the second throttle pipe is provided with a second reducing pipe section and a second equal diameter pipe section, the second equal diameter pipe section is connected with the small caliber end of the second reducing pipe section, and the large caliber end of the second reducing pipe section is connected with the air inlet of the air filter.
As a preferable mode of the utility model, the first diameter-reduced pipe section is a trumpet-shaped air guide sleeve.
As a preferable scheme of the utility model, the periphery of the first diameter-reducing pipe section is provided with a first flanging which is bent outwards, the first flanging extends along the axial direction of the first throttle pipe, a connecting groove is formed between the first flanging and the peripheral wall of the first throttle pipe, and the connecting groove is in threaded connection with the air inlet pipe.
As a preferable scheme of the utility model, the large-caliber end of the second reducing pipe section is provided with a second flanging which is bent outwards, the second flanging extends along the axial direction of the second throttling pipe, the inner peripheral wall of the air inlet of the air filter is provided with a limiting step, the upper end face of the limiting step is propped against the lower end of the second flanging, the inner peripheral wall of the air outlet of the corrugated pipe is provided with a radially-raised limiting convex ring, and the lower end face of the limiting convex ring is propped against the upper end of the second flanging.
As a preferable scheme of the utility model, the air outlet of the corrugated pipe is sleeved on the air inlet of the air filter, an annular bulge is arranged on the outer peripheral wall of the air inlet of the air filter, and an annular groove which is in buckling connection with the annular bulge is arranged on the inner peripheral wall of the air outlet of the corrugated pipe.
As a preferable scheme of the utility model, the air outlet of the corrugated pipe and the air inlet of the air filter are clamped and fixed through the anchor ear.
As a preferable scheme of the utility model, the air inlet of the corrugated pipe is sleeved on the air outlet of the air inlet pipe, an annular bulge is arranged on the outer peripheral wall of the air outlet of the air inlet pipe, and an annular groove in snap connection with the annular bulge is arranged on the inner peripheral wall of the air inlet of the corrugated pipe.
As a preferable scheme of the utility model, the air inlet of the corrugated pipe and the air outlet of the air inlet pipe are clamped and fixed through the anchor ear.
Compared with the prior art, the structure for reducing the air inlet noise of the engine has the beneficial effects that:
according to the utility model, the first throttle pipe is arranged at the air inlet of the air inlet pipe, so that a first expansion noise elimination is formed between the first throttle pipe and the air inlet pipe, and the second throttle pipe is arranged at the air inlet of the air filter, so that a second expansion noise elimination is formed between the second throttle pipe and the cavity of the air filter, and further, the secondary noise reduction is realized on the path of air entering the air filter, the high-frequency noise from the air inlet channel can be effectively reduced, and the attenuation of the air filter and the performance of the engine air inlet noise are further improved.
Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.
Drawings
FIG. 1 is a schematic diagram of an engine intake noise reducing structure according to an embodiment of the present utility model;
FIG. 2 is a cross-sectional view taken in the direction A-A of the structure shown in FIG. 1;
fig. 3 is a cross-sectional view in the direction B-B of the structure shown in fig. 1.
The marks in the figure:
the air filter 1, the limit step 11 and the annular bulge 12; an intake pipe 2; bellows 3, limit convex ring 31, annular groove 32; the first throttle pipe 4, the first reducing pipe section 41, the first equal-diameter pipe section 42, the air guide sleeve 43, the first flanging 44 and the connecting groove 45; a second throttle tube 5, a second reduced diameter tube section 51, a second constant diameter tube section 52, a second flange 53; and a hoop 6.
Detailed Description
Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model.
In the description of the present utility model, it should be understood that references to orientation descriptions such as upper, lower, front, rear, left, right, etc. are based on the orientation or positional relationship shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the components referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model.
In the description of the present utility model, a number means one or more, a number means two or more, and greater than, less than, exceeding, etc. are understood to not include the present number, and above, below, within, etc. are understood to include the present number. The description of the first and second is for the purpose of distinguishing between technical features only and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
In the description of the present utility model, unless explicitly defined otherwise, terms such as arrangement, installation, connection, etc. should be construed broadly and the specific meaning of the terms in the present utility model can be reasonably determined by a person skilled in the art in combination with the specific contents of the technical scheme.
As shown in fig. 1 to 3, the intake noise reducing structure of the engine according to the preferred embodiment of the present utility model comprises an air filter 1 and an intake assembly, wherein the intake assembly comprises an intake pipe 2, a corrugated pipe 3, a first throttle pipe 4 and a second throttle pipe 5, and an air outlet of the intake pipe 2 is connected with an air inlet of the air filter 1 through the corrugated pipe 3; the first throttle pipe 4 is arranged on the air inlet of the air inlet pipe 2, the first throttle pipe 4 is provided with a first reducing pipe section 41 and a first equal-diameter pipe section 42, the first equal-diameter pipe section 42 is connected with the small-diameter end of the first reducing pipe section 41, and the periphery of the first reducing pipe section 41 is connected with the air inlet of the air inlet pipe 2; the second throttle pipe 5 is arranged on the air inlet of the air filter 1, the second throttle pipe 5 is provided with a second reducing pipe section 51 and a second equal diameter pipe section 52, the second equal diameter pipe section 52 is connected with the small diameter end of the second reducing pipe section 51, and the large diameter end of the second reducing pipe section 51 is connected with the air inlet of the air filter 1.
Therefore, according to the structure for reducing the intake noise of the engine, according to the embodiment of the utility model, the first throttle pipe 4 is arranged at the air inlet of the air inlet pipe 2, so that a first expansion noise elimination is formed between the first throttle pipe 4 and the air inlet pipe 2, the second throttle pipe 5 is arranged at the air inlet of the air filter 1, so that a second expansion noise elimination is formed between the second throttle pipe 5 and the cavity of the air filter 1, and further, the secondary noise reduction is realized on the path of air entering the air filter 1, the high-frequency noise from an air inlet channel can be effectively reduced, and the attenuation performance of the air filter 1 and the performance of the intake noise of the engine are further improved.
Illustratively, the first reduced diameter tube section 41 is a flared pod 43. The horn-shaped air guide sleeve 43 can increase the air inflow and improve the air compression rate, thereby being beneficial to subsequent expansion and noise elimination.
Illustratively, in order to better realize the connection and fixation between the first throttle pipe 4 and the air inlet pipe 2, the outer periphery of the first reducing pipe section 41 is provided with a first flange 44 bent outwards, the first flange 44 extends along the axial direction of the first throttle pipe 4, a connecting groove 45 is formed between the first flange 44 and the outer peripheral wall of the first throttle pipe 4, and the connecting groove 45 is in threaded connection with the air inlet pipe 2.
Illustratively, in order to better realize the connection and fixation between the second throttle pipe 5 and the air filter 1, the large-caliber end of the second reducing pipe section 51 is provided with a second flange 53 which is bent outwards, the second flange 53 extends along the axial direction of the second throttle pipe 5, the inner peripheral wall of the air inlet of the air filter 1 is provided with a limit step 11, the upper end surface of the limit step 11 abuts against the lower end of the second flange 53, the inner peripheral wall of the air outlet of the corrugated pipe 3 is provided with a radial raised limit convex ring 31, and the lower end surface of the limit convex ring 31 abuts against the upper end of the second flange 53.
For better connection and fixation between the corrugated tube 3 and the air filter 1, an air outlet of the corrugated tube 3 is sleeved on an air inlet of the air filter 1, an annular protrusion 12 is arranged on the outer peripheral wall of the air inlet of the air filter 1, and an annular groove 32 in snap connection with the annular protrusion 12 is arranged on the inner peripheral wall of the air outlet of the corrugated tube 3; the air outlet of the corrugated pipe 3 and the air inlet of the air filter 1 are clamped and fixed through the anchor ear 6. Likewise, in order to better realize the connection and fixation between the corrugated pipe 3 and the air inlet pipe 2, the air inlet of the corrugated pipe 3 is sleeved on the air outlet of the air inlet pipe 2, an annular bulge is arranged on the outer peripheral wall of the air outlet of the air inlet pipe 2, and an annular groove in snap connection with the annular bulge is arranged on the inner peripheral wall of the air inlet of the corrugated pipe 3; the air inlet of the corrugated pipe 3 and the air outlet of the air inlet pipe 2 are clamped and fixed through the anchor ear 6.
The foregoing is merely a preferred embodiment of the present utility model, and it should be noted that modifications and substitutions can be made by those skilled in the art without departing from the technical principles of the present utility model, and these modifications and substitutions should also be considered as being within the scope of the present utility model.
Claims (8)
1. The structure for reducing the air intake noise of the engine is characterized by comprising an air filter and an air intake assembly, wherein the air intake assembly comprises an air inlet pipe, a corrugated pipe, a first throttle pipe and a second throttle pipe, and an air outlet of the air inlet pipe is connected with an air inlet of the air filter through the corrugated pipe; the first throttle pipe is arranged on the air inlet of the air inlet pipe, the first throttle pipe is provided with a first reducing pipe section and a first equal-diameter pipe section, the first equal-diameter pipe section is connected with the small-diameter end of the first reducing pipe section, and the periphery of the first reducing pipe section is connected with the air inlet of the air inlet pipe; the second throttle pipe is arranged on the air inlet of the air filter, the second throttle pipe is provided with a second reducing pipe section and a second equal diameter pipe section, the second equal diameter pipe section is connected with the small caliber end of the second reducing pipe section, and the large caliber end of the second reducing pipe section is connected with the air inlet of the air filter.
2. The engine intake noise reducing structure of claim 1, wherein the first reduced diameter tube section is a horn-shaped pod.
3. The engine intake noise reduction structure according to claim 1, wherein a first flange bent outwards is arranged on the periphery of the first diameter-reduced pipe section, the first flange extends along the axial direction of the first throttle pipe, a connecting groove is formed between the first flange and the peripheral wall of the first throttle pipe, and the connecting groove is in threaded connection with the intake pipe.
4. The structure for reducing air intake noise of engine according to claim 1, wherein the large diameter end of the second reducing pipe section is provided with a second flange bent outwards, the second flange extends along the axial direction of the second throttle pipe, the inner peripheral wall of the air inlet of the air filter is provided with a limit step, the upper end face of the limit step abuts against the lower end of the second flange, the inner peripheral wall of the air outlet of the corrugated pipe is provided with a limit convex ring protruding radially, and the lower end face of the limit convex ring abuts against the upper end of the second flange.
5. The structure for reducing engine intake noise according to claim 1, wherein the air outlet of the bellows is sleeved on the air inlet of the air filter, an annular protrusion is arranged on the outer peripheral wall of the air inlet of the air filter, and an annular groove in snap connection with the annular protrusion is arranged on the inner peripheral wall of the air outlet of the bellows.
6. The engine intake noise reducing structure of claim 5, wherein the air outlet of the bellows is clamped and fixed with the air inlet of the air filter by a hoop.
7. The structure for reducing intake noise of an engine according to claim 1, wherein the air inlet of the bellows is sleeved on the air outlet of the air inlet pipe, an annular protrusion is arranged on the outer peripheral wall of the air outlet of the air inlet pipe, and an annular groove in snap connection with the annular protrusion is arranged on the inner peripheral wall of the air inlet of the bellows.
8. The engine intake noise reducing structure according to claim 7, wherein the intake port of the bellows and the outlet port of the intake pipe are clamped and fixed by a hoop.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320078114.2U CN218934580U (en) | 2023-01-10 | 2023-01-10 | Structure for reducing air inlet noise of engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320078114.2U CN218934580U (en) | 2023-01-10 | 2023-01-10 | Structure for reducing air inlet noise of engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218934580U true CN218934580U (en) | 2023-04-28 |
Family
ID=86091664
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320078114.2U Active CN218934580U (en) | 2023-01-10 | 2023-01-10 | Structure for reducing air inlet noise of engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218934580U (en) |
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2023
- 2023-01-10 CN CN202320078114.2U patent/CN218934580U/en active Active
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