Automobile engine intake elbow

Abstract

The utility model belongs to the technical field of automobile parts, especially an automobile engine air inlet elbow. Including the elbow main part, the one end of elbow main part is equipped with the air inlet interface, and the other end of elbow main part is equipped with the air outlet interface, the tail end of air inlet interface is equipped with the sound absorption cavity, is equipped with the first micro punch inner tube in the sound absorption cavity, and the outer wall of first micro punch inner tube is fixed with the first spiral sound -absorbing piece. The utility model is provided with two layers micro punch inner tube, two layers spiral sound -absorbing piece and damping piece at the air inlet interface of elbow, utilizes the friction and damping effect that the airflow passes through micro -hole and will sound energy into heat energy to reduce airflow noise, makes the sound wave in the transmission process interference and offset through the structure of spiral, thereby further reduces the noise, and the damping piece can effectively absorb sound wave energy, reduces the propagation and reflection of sound, through above -mentioned multilayer sound absorption structure, be favorable to reduce the high -frequency air intake radiation noise of supercharged engine.

Description

Technical Field

[0001] This utility model relates to the field of automotive parts technology, specifically to an automotive engine intake bend. Background Technology

[0002] Gasoline cars rely on the combustion of gasoline and air in the cylinder to generate power and drive the car. The intake system has a significant impact on the overall power performance, fuel economy, and noise control performance of the vehicle. Designing an intake system with high charging efficiency and low noise is what people are pursuing.

[0003] Currently, turbocharged engines with Miller cycle function are widely used. Their turbocharger intake connection pipe has to withstand a lot of pressure. When the turbocharged engine is working at full load, due to the high intake pressure, the turbocharger intake connection pipe is prone to radiating high-frequency airflow noise, which causes user complaints.

[0004] Therefore, we propose an intake bend for automotive engines to solve the above problems. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] In view of the shortcomings of the prior art, this utility model provides an intake bend for an automobile engine, which solves the problems mentioned in the background art.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, this utility model specifically adopts the following technical solution:

[0009] An intake manifold for an automobile engine includes a manifold body, one end of which has an intake port and the other end has an exhaust port. The tail end of the intake port has a sound-absorbing cavity. The sound-absorbing cavity contains a first micro-perforated inner tube, and a first spiral muffler is fixed to the outer wall of the first micro-perforated inner tube. A second micro-perforated inner tube is fitted around the outer side of the spiral muffler, and a second spiral muffler is fixed to the outer wall of the second micro-perforated inner tube. A damping plate is attached to the inner wall of the sound-absorbing cavity.

[0010] Furthermore, the end face of the air intake interface is provided with a first flange hole, and the end face of the air intake interface is provided with a first stepped opening.

[0011] Furthermore, the sound-absorbing cavity has a gasket at its head end, and a sealing gasket is installed at the gasket.

[0012] Furthermore, the head end of the first micro-perforated inner tube extends outward from the pad ring, and the diameter of the first micro-perforated inner tube is consistent with that of the bent tube body.

[0013] Furthermore, the micro-holes of the first micro-perforated inner tube and the second micro-perforated inner tube are staggered, and the spiral directions of the first spiral silencing plate and the second spiral silencing plate are opposite.

[0014] Furthermore, the end face of the air outlet is provided with a second flange hole, and the end face of the air outlet is provided with a second stepped opening.

[0015] (III) Beneficial Effects

[0016] Compared with the prior art, this utility model provides an intake bend for an automobile engine, which has the following characteristics:

[0017] Beneficial effects:

[0018] This invention features a two-layer micro-perforated inner tube, two layers of spiral sound-absorbing plates, and a damping plate at the air intake interface of a curved pipe. By utilizing the friction and damping effect generated when airflow passes through the micro-holes, sound energy is converted into heat energy to reduce airflow noise. The spiral structure causes interference and cancellation of sound waves during propagation, thereby further reducing noise. The damping plate effectively absorbs sound wave energy, reducing sound propagation and reflection. Through the above-mentioned multi-layer sound-absorbing structure, it is beneficial to reduce the high-frequency intake radiation noise of turbocharged engines. Attached Figure Description

[0019] Figure 1 This is a cross-sectional view of the present invention;

[0020] Figure 2 This is a front view of the present invention;

[0021] Figure 3 This is a side view of the present invention.

[0022] In the diagram: 1. Main body of the bent pipe; 2. Air inlet; 3. Air outlet; 4. Sound absorption cavity; 5. First micro-perforated inner tube; 6. First spiral silencer; 7. Second micro-perforated inner tube; 8. Second spiral silencer; 9. Damping plate; 10. First flange hole; 11. First stepped opening; 12. Gasket; 13. Sealing gasket; 14. Second flange hole; 15. Second stepped opening. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Example

[0025] like Figures 1-3 As shown in the figure, an embodiment of the present invention provides an intake manifold for an automobile engine, comprising a manifold body 1, an intake port 2 at one end of the manifold body 1, and an exhaust port 3 at the other end of the manifold body 1. A sound-absorbing cavity 4 is provided at the tail end of the intake port 2. A first micro-perforated inner tube 5 is provided inside the sound-absorbing cavity 4, and a first spiral muffler 6 is fixed to the outer wall of the first micro-perforated inner tube 5. A second micro-perforated inner tube 7 is fitted around the outer side of the spiral muffler 6, and a second spiral muffler 8 is fixed to the outer wall of the second micro-perforated inner tube 7. The inner wall of the sound-absorbing cavity 4 is attached with damping plates 9. At the air intake interface 2 of the bend, there are two layers of micro-perforated inner tubes, two layers of spiral sound-absorbing plates, and damping plates 9. By utilizing the friction and damping effect generated when the airflow passes through the micro-holes, the sound energy is converted into heat energy to reduce airflow noise. The spiral structure causes the sound waves to interfere and cancel each other during propagation, thereby further reducing noise. The damping plates 9 can effectively absorb the sound wave energy and reduce the propagation and reflection of sound. Through the above multi-layer sound-absorbing structure, it is beneficial to reduce the high-frequency intake radiation noise of the turbocharged engine.

[0026] like Figure 1 As shown, in some embodiments, the end face of the air intake interface 2 is provided with a first flange hole 10 and a first stepped opening 11. When the air intake bend is installed, the first flange hole 10 acts as a positioning bolt. The bolt provides a fastening point to maintain the stability and sealing of the connection. The first stepped opening 11 is used to install a gasket.

[0027] like Figure 1 As shown, in some embodiments, the head end of the sound-absorbing cavity 4 is provided with a gasket 12, and a sealing gasket 13 is installed at the gasket 12. The gasket 12 is used to limit and fix the sealing gasket 13.

[0028] like Figure 1 As shown, in some embodiments, the head end of the first micro-perforated inner tube 5 extends outward from the pad ring 12, and the diameter of the first micro-perforated inner tube 5 is consistent with that of the bent tube body 1. By utilizing the friction and damping effect generated when the airflow passes through the micro-holes, the sound energy is converted into heat energy to reduce airflow noise.

[0029] like Figure 1 As shown, in some embodiments, the micro-holes of the first micro-perforated inner tube 5 and the second micro-perforated inner tube 7 are staggered, and the spiral directions of the first spiral muffler 6 and the second spiral muffler 8 are opposite. Through the multi-layer sound-absorbing structure, it is beneficial to reduce the high-frequency intake radiation noise of the turbocharged engine.

[0030] like Figure 1As shown, in some embodiments, the end face of the air outlet 3 is provided with a second flange hole 14 and a second stepped opening 15. When the air inlet bend is installed, the second flange hole 14 acts as a positioning bolt, and the bolt provides a fastening point to maintain the stability and sealing of the connection. The second stepped opening 15 is used to install a gasket.

[0031] In use, two layers of micro-perforated inner tubes, two layers of spiral sound-absorbing plates, and a damping plate 9 are installed at the air intake interface 2 of the bend. By utilizing the friction and damping effect generated when the airflow passes through the micro-holes, sound energy is converted into heat energy to reduce airflow noise. The spiral structure causes interference and cancellation of sound waves during propagation, thereby further reducing noise. The damping plate 9 can effectively absorb sound wave energy and reduce sound propagation and reflection. Through the above multi-layer sound-absorbing structure, it is beneficial to reduce the high-frequency intake radiation noise of the turbocharged engine.

[0032] In summary, the intake interface 2 of the bend is equipped with two layers of micro-perforated inner tubes, two layers of spiral sound-absorbing plates, and a damping plate 9. By utilizing the friction and damping effect generated when the airflow passes through the micro-holes, sound energy is converted into heat energy to reduce airflow noise. The spiral structure causes interference and cancellation of sound waves during propagation, thereby further reducing noise. The damping plate 9 can effectively absorb sound wave energy and reduce sound propagation and reflection. Through the above-mentioned multi-layer sound-absorbing structure, it is beneficial to reduce the high-frequency intake radiation noise of the turbocharged engine.

[0033] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An intake manifold for an automobile engine, comprising a manifold body (1), characterized in that: One end of the bent pipe body (1) is provided with an air inlet (2), and the other end of the bent pipe body (1) is provided with an air outlet (3). The tail end of the air inlet (2) is provided with a sound absorption cavity (4). The sound absorption cavity (4) is provided with a first micro-perforated inner tube (5), and a first spiral silencing plate (6) is fixed on the outer wall of the first micro-perforated inner tube (5). A second micro-perforated inner tube (7) is fitted on the outer side of the spiral silencing plate, and a second spiral silencing plate (8) is fixed on the outer wall of the second micro-perforated inner tube (7). A damping plate (9) is attached to the inner wall of the sound absorption cavity (4).

2. The automobile engine intake bend according to claim 1, characterized in that: The end face of the air intake port (2) is provided with a first flange hole (10) and the end face of the air intake port (2) is provided with a first stepped opening (11).

3. The automobile engine intake bend according to claim 1, characterized in that: The sound-absorbing cavity (4) has a gasket (12) at its head end, and a sealing gasket (13) is installed at the gasket (12).

4. The automobile engine intake bend according to claim 3, characterized in that: The head end of the first micro-punched inner tube (5) extends outward from the pad ring (12), and the diameter of the first micro-punched inner tube (5) is consistent with that of the bent tube body (1).

5. The automobile engine intake bend according to claim 1, characterized in that: The micro-holes of the first micro-perforated inner tube (5) and the second micro-perforated inner tube (7) are offset, and the spiral directions of the first spiral silencing plate (6) and the second spiral silencing plate (8) are opposite.

6. The automobile engine intake bend according to claim 1, characterized in that: The end face of the air outlet (3) is provided with a second flange hole (14) and the end face of the air outlet (3) is provided with a second stepped opening (15).

Images