CN216741673U - A sound wave exhaust pipe assembly and its automobile - Google Patents

Abstract

The utility model relates to a sound wave exhaust pipe assembly which comprises a sound attenuation bag, a connecting pipe, a first tail pipe, a second tail pipe, a switching pipe and a first sound attenuation pipe, wherein the sound attenuation bag is provided with a sound attenuation cavity; the adapter tube is connected with the connecting tube, one end of the first silencing tube is communicated with the adapter tube, and the other end of the first silencing tube is connected with the first tail tube; the tail end of the adapter tube is provided with an opening and is communicated with the silencing cavity; the pipe wall of the first silencing pipe is provided with a plurality of first silencing holes. Only one silencing bag is needed to realize the switching between the sound wave mode and the quiet mode of the exhaust pipe, and the installation space needed by the exhaust pipe assembly is smaller. Meanwhile, the first silencing pipe of the silencing bag can assist in eliminating noise in a quiet mode, so that the effect of eliminating noise of the exhaust pipe is improved, and the noise emitted in the quiet mode of the exhaust pipe is smaller.

Description

A sound wave exhaust pipe assembly and its automobile

technical field

The utility model relates to the field of auto parts, in particular to a sound wave exhaust pipe assembly and an automobile thereof.

Background technique

In terms of noise reduction and vibration reduction, vehicles usually use a noise reduction structure in the exhaust system to consume exhaust energy and achieve the purpose of driving quietness and comfort. The cold-end exhaust system of a vehicle mainly includes a mid-end muffler and a rear-end exhaust pipe with a muffler assembly. The mid-end resistive muffler absorbs energy by filling sound-absorbing materials around the pipeline through which the airflow passes, to achieve For the purpose of noise reduction, it has a good noise reduction effect on medium and high frequency sound waves. The resistance muffler at the back end uses pipes, baffles and other components to form muffler units such as expansion chambers and resonant chambers, so that sound waves are reflected and interfered when passing through, thereby reducing the energy of sound waves to achieve the purpose of muffling. Medium and low frequency sound waves have good noise reduction effect.

Since conventional vehicles use a combination of a mid-end muffler and a rear-end muffler to achieve the effect of noise reduction and vibration reduction, it cannot show the sporty sense of the vehicle and cannot meet the needs of sports cars. The "hearable" part of the important indicators in the intuitive experience of sports cars can be obtained through the sound of the exhaust, but the current mainstream coupe models in the market are mainly four-cylinder engines and small and medium-displacement engines. How to match conventional engines? Achieving an excellent sports exhaust sound on a sports car and ensuring a comfortable experience at home is the key and difficult point in the development of the sound experience of this type of vehicle.

An existing dual-mode sports sound muffler assembly has two types of sound: sports sound and comfortable and quiet sound, and includes: a first muffler arranged on one side of the vehicle, and the inside of the first muffler is provided with a A resonant cavity structure for attenuating low-frequency airflow noise, and a sound-absorbing cotton structure for attenuating broadband airflow noise, the rear end of the first muffler is provided with a solenoid valve; for the second muffler arranged on the other side of the vehicle, the first muffler The second muffler is a three-tube labyrinth type muffler, and the interior of the second muffler is provided with a three-tube labyrinth structure for attenuating intermediate-frequency airflow noise and high-frequency airflow noise, and the volume of the second muffler is larger than that of the first muffler; and connecting pipes located at the front ends of the second muffler and the first muffler, the front ends of the second muffler and the first muffler are both connected to the intake pipe for introducing vehicle exhaust gas through the connecting pipes. A first muffler is arranged on one side of the vehicle, and a solenoid valve is arranged at the rear end of the first muffler, and a second muffler is arranged on the other side of the vehicle. The volume of the second muffler is larger than that of the first muffler. The muffler package structure, one side adopts a large volume muffler package, and a complex internal structure is designed to enable it to have high exhaust back pressure and quiet acoustic characteristics, and the other side adopts a small volume muffler package, and is designed The simple internal structure makes it have the characteristics of low exhaust back pressure and moving sound waves. At the same time, a single-way solenoid valve structure is arranged on the tail pipe of the small volume muffler package. The muffler assembly features dual-mode acoustics for sporty sound and quiet sound.

In the above technical solution, the quiet sound and the moving sound wave require two different and unconnected noise reduction packages. Although one has a large volume and the other requires only a small volume, it still needs to temporarily occupy more interior volume. Moreover, such a structure involves more parts, resulting in a higher manufacturing cost.

Utility model content

The utility model provides a sound wave exhaust pipe assembly in order to overcome the above-mentioned problem that the moving sound waves and the quiet sound of the exhaust pipe in the prior art are separated into two sound-absorbing packages. model.

In order to solve the above-mentioned technical problems, the technical solution adopted by the present invention is: a sound wave exhaust pipe assembly, comprising a sound-absorbing package provided with a sound-absorbing cavity, a connecting pipe communicating with the sound-absorbing package, and a first valve equipped with a valve. The tail pipe and the second tail pipe, as well as the adapter pipe and the first muffler pipe are arranged in the muffler cavity, and a plurality of muffler baffles are arranged in the muffler cavity, and the muffler baffles are located in the second muffler. between the tail pipe and the transfer pipe; the transfer pipe is connected with the connecting pipe, one end of the first muffler pipe is connected with the transfer pipe, and the other end is connected with the first tail pipe; the The end of the transition pipe is set to be open and communicated with the muffler cavity; the pipe wall of the first muffler pipe is provided with a plurality of first muffler holes.

In the above technical solution, the end of the connecting pipe away from the muffler package is the intake end, the sound wave mode is that the exhaust pipe can generate sound waves, and the quiet mode is that the noise generated by the exhaust gas can be eliminated. When the valve is opened, since there are multiple muffler baffles in the muffler cavity, the back pressure between the second tail pipe and the transfer pipe is relatively large, and the gas will be directly discharged from the first tail pipe with lower back pressure. The first muffler pipe only takes out the high-frequency noise in the gas through the first muffler hole, and the rest of the sound is directly discharged with the gas, thereby producing the effect of sound waves. When the valve is closed, it is in quiet mode. Since the gas cannot be discharged through the first tail pipe, part of the gas enters the muffler cavity after eliminating the noise through the first muffler hole of the first muffler pipe, while part of the gas is directly discharged from the muffler cavity. The transfer tube directly enters the muffler cavity. Since there are multiple muffler baffles between the transfer tube and the second tail pipe, the gas is discharged from the second tail pipe after the noise reduction effect of the muffler baffle to eliminate the noise of the gas. . Through the double muffler effect of the first muffler pipe and the muffler baffle, the noise generated by the exhaust pipe in the quiet mode is smaller.

Preferably, the opening of the transfer pipe is connected with a second muffler pipe and a third muffler pipe; the second muffler pipe passes through the muffler baffle and the opening is located on the inner wall of the muffler cavity and the muffler between the baffles; the third muffler pipe is installed on the muffler baffle and penetrates through a plurality of muffler baffles, one end of the third muffler pipe is communicated with the second tail pipe, and the other end is connected with the The muffler cavity is connected. The gas enters the second muffler pipe after passing through the adapter pipe, and then is discharged from the opening of the second muffler pipe. At the same time, since a plurality of muffler baffles are penetrated between the two ends of the third muffler pipe, the gas flows from the second muffler pipe. After being discharged, it first diffuses into the muffler cavity, then flows through multiple muffler baffles after rebounding on the inner wall of the muffler cavity, and then enters the third muffler pipe, and then enters the second tail pipe from the third muffler pipe discharge. Through the arrangement of the two-stage muffler pipes of the second muffler pipe and the third muffler pipe, the gas can diffuse in the muffler cavity and further eliminate noise in the collision and friction of the inner wall of the muffler cavity, thereby improving the effect of noise elimination.

Preferably, the first muffler pipe passes through the muffler baffle, and the muffler hole is located between two muffler baffles.

Preferably, the first tail pipe and the second tail pipe are provided with two and are connected to both sides of the muffler package, the transfer pipe is a four-way pipe, and the muffler baffles are respectively arranged at On both sides of the transfer pipe, the third muffler pipe is provided with two muffler baffles installed on both sides respectively; the first muffler pipe is provided with two and both are connected to the transfer pipe On the two opposite openings, the second muffler pipe is a T-shaped pipe, which is connected to the opening of one end of the adapter pipe away from the connecting pipe. Both the sound mode and the quiet mode can exhaust from the two first or second tail pipes, which can increase the exhaust volume.

Preferably, the muffler baffle is provided with a plurality of second muffler holes. The gas passes through the muffler baffle through the second muffler hole, and the muffler baffle muffles the gas through the action of the second muffler hole.

Preferably, the first muffler pipe is provided with a muffler, and the first muffler hole is located on the muffler; the muffler is a resistive muffler. The resistive muffler can be a high-frequency tube mechanism, and the high-frequency noise entering the muffler package is removed through the muffler cotton. No matter in the sound mode or the quiet mode, no high-frequency noise will be emitted, and the sound wave effect is better. And the noise cancellation in quiet mode is also better.

Preferably, the valve is arranged on the straight pipe section of the first tail pipe close to the muffler package. When the valve is closed, the gas will flow to the valve and then return, and the valve is set in this position, which can reduce the amplitude of the exhaust pipe when the gas flows in the exhaust pipe, and avoid resonance with the gas to generate unnecessary noise , causing the first tailpipe to make noise due to vibration in quiet mode.

Preferably, a muffler is provided on the connecting pipe. The muffler is a resistive muffler, which eliminates part of the unwanted high-frequency noise through the muffler cotton in the porous structure of the inner wall and then enters the muffler package.

Preferably, the volume of the muffler is 1L. The muffler in this volume will only eliminate unnecessary high frequencies, reduce the effect of eliminating medium and low frequency noise, and ensure that the sound wave effect is better in the sound wave mode.

An automobile includes the above-mentioned sonic exhaust pipe assembly.

Compared with the prior art, the beneficial effect is that only one muffling package is needed to realize the switching between the sound mode and the quiet mode of the exhaust pipe, and the installation space of the exhaust pipe assembly is smaller. At the same time, the first muffler pipe of the muffler package can assist in the elimination of noise in the quiet mode, improve the noise elimination effect of the exhaust pipe, and make the noise emitted by the quiet mode of the exhaust pipe smaller.

Description of drawings

1 is a schematic structural diagram of a sound wave exhaust pipe assembly of the present invention;

Fig. 2 is the internal structure schematic diagram of the muffler bag of the present invention;

FIG. 3 is a partial enlarged view of the position A of FIG. 2 .

Detailed ways

The accompanying drawings are for illustrative purposes only, and should not be construed as limitations on this patent; in order to better illustrate the present embodiment, some parts of the accompanying drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product; for those skilled in the art It is understandable to the artisan that certain well-known structures and descriptions thereof may be omitted from the drawings. The positional relationships described in the drawings are only for exemplary illustration, and should not be construed as a limitation on the present patent.

The same or similar symbols in the drawings of the embodiments of the present invention correspond to the same or similar components; in the description of the present invention, it should be understood that if there are terms "upper", "lower", "left", " The orientation or positional relationship indicated by "right", "long" and "short" is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying the indicated device or element. It must have a specific orientation, be constructed and operated in a specific orientation, so the terms describing the positional relationship in the accompanying drawings are only used for exemplary illustration, and should not be construed as a limitation on this patent. Understand the specific meanings of the above terms in specific situations.

Below by specific embodiment, and in conjunction with accompanying drawing, the technical scheme of the present utility model is further described in detail:

Example 1

1-3 shows an embodiment of a sound wave exhaust pipe assembly, including a muffler package 1 provided with a muffler cavity 101, a connecting pipe 2 communicating with the muffler package 1, and a first tail with a valve 301 installed The pipe 3 and the second tail pipe 4 and the adapter pipe 5 and the first muffler pipe 6 are arranged in the muffler cavity 101. The muffler cavity 101 is provided with a plurality of muffler baffles 7, and the muffler baffles 7 are located in the second tail. Between the pipe 4 and the adapter pipe 5; the adapter pipe 5 is connected with the connecting pipe 2, one end of the first muffler pipe 6 is connected with the adapter pipe 5, and the other end is connected with the first tail pipe 3; the end of the adapter pipe 5 is set as an opening and communicates with the muffler cavity 101 ; the pipe wall of the first muffler pipe 6 is provided with a plurality of first muffler holes 601 .

Further, the opening of the transition pipe 5 is connected with a second muffler pipe 8 and a third muffler pipe 9; the second muffler pipe 8 passes through the muffler baffle 7 and the opening is located on the inner wall of the muffler cavity 101 and the muffler baffle. 7; the third muffler pipe 9 is installed on the muffler baffle 7 and passes through a plurality of muffler baffles 7, one end of the third muffler pipe 9 is communicated with the second tail pipe 4, and the other end is communicated with the muffler cavity 101 . After passing through the transfer pipe 5, the gas enters the second muffler pipe 8, and then is discharged from the opening of the second muffler pipe 8. At the same time, since a plurality of muffler baffles 7 are penetrated between the two ends of the third muffler pipe 9, the gas After being discharged from the second muffler pipe 8, it first diffuses into the muffler cavity 101, and then flows through a plurality of muffler baffles 7 after rebounding on the inner wall of the muffler cavity 101, and then enters the third muffler pipe 9, and then flows out of the muffler cavity 101. The third muffler pipe 9 enters into the second tail pipe 4 and is discharged. Through the arrangement of the two-stage muffler pipes of the second muffler pipe 8 and the third muffler pipe 9, the gas can diffuse in the muffler cavity 101 and further eliminate noise in the collision and friction of the inner wall of the muffler cavity 101, thereby improving the effect of noise elimination .

The first muffler pipe 6 passes through the muffler baffle 7 , and the muffler hole is located between the two muffler baffles 7 .

In this embodiment, the first tail pipe 3 and the second tail pipe 4 are provided with two and are connected to both sides of the muffler package 1, the transfer pipe 5 is a four-way pipe, and the muffler baffles 7 are respectively arranged on the transfer pipe Two sides of the 5, each side is provided with two, the third muffler pipe 9 is provided with two muffler baffles 7 respectively installed on both sides; the first muffler pipe 6 is provided with two and both are connected to the rotary On the two opposite openings of the connecting pipe 5 , the second muffler pipe 8 is a T-shaped pipe, which is connected to the opening of the end of the connecting pipe 5 away from the connecting pipe 2 . Both the sound mode and the quiet mode can exhaust from the two first tail pipes 3 or the second tail pipes 4, which can increase the exhaust volume.

Specifically, the muffler baffle 7 is provided with a plurality of second muffler holes 701 . The gas passes through the muffler baffle 7 through the second muffler hole 701 , and the muffler baffle 7 muffles the gas through the action of the second muffler hole 701 .

Wherein, the first muffler pipe 6 is provided with a muffler part 602, and the first muffler hole 601 is located on the muffler part 602; the muffler part 602 is a resistive muffler, in this embodiment, a high-frequency tube, The sound cotton will remove the high-frequency noise that enters the muffler package, no high-frequency noise will be emitted in either the sound mode or the quiet mode, the sound wave effect is better, and the noise reduction effect in the quiet mode is also better.

In addition, the valve 301 is arranged on the straight pipe section of the first tail pipe 3 close to the muffler package 1 . When the valve 301 is closed, the gas will flow to the valve 301 and then return, and the valve 301 is set in this position, which can reduce the amplitude of the exhaust pipe when the gas flows in the exhaust pipe, and avoid resonance with the gas. The extra noise causes the first tail pipe 3 to make noise due to vibration in the quiet mode.

The working principle or working process of this embodiment: the end of the connecting pipe 2 away from the muffler package 1 is the intake end, the sound wave mode is that the exhaust pipe can generate sound waves, and the quiet mode is that the noise generated by the exhaust can be eliminated. When the valve 301 is opened, since the muffler chamber 101 is provided with a plurality of muffler baffles 7, the back pressure between the second tail pipe 4 and the transfer pipe 5 is relatively large, and the gas will directly flow from the second tail pipe 4 with the lower back pressure. A tail pipe 3 is discharged, and the first muffler pipe 6 only takes out high-frequency noise in the gas through the first muffler hole 601, and the rest of the sound is directly discharged with the gas, thereby producing the effect of sound waves. When the valve 301 is closed, it is in the quiet mode. Since the gas cannot be discharged through the first tail pipe 3, part of the gas enters the muffler cavity 101 after the noise is eliminated by the first muffler hole 601 of the first muffler pipe 6, and Part of the gas directly enters the muffler cavity 101 from the adapter pipe 5. Since there are multiple muffler baffles 7 between the adapter pipe 5 and the second tail pipe 4, the gas passes through the muffler effect of the muffler baffle 7 and then goes into the muffler chamber 101. It is discharged from the second tail pipe 4 to eliminate the noise of the gas. Through the double muffling effect of the first muffler pipe 6 and the muffler baffle 7, the noise generated by the exhaust pipe in the quiet mode is reduced.

The beneficial effect of this embodiment is that only one sound-absorbing package 1 is needed to realize the switching between the sound wave mode and the quiet mode of the exhaust pipe, and the installation space required for the exhaust pipe assembly is smaller. At the same time, the first muffler pipe 6 of the muffler package 1 can assist in eliminating noise in the quiet mode, improving the noise elimination effect of the exhaust pipe, and making the noise emitted by the exhaust pipe in the quiet mode smaller.

Example 2

Embodiment 2 of a sound wave exhaust pipe assembly is based on Embodiment 1 above. The difference from Embodiment 1 is that a muffler 10 is provided on the connecting pipe 2 . The muffler 10 is a resistive muffler, which eliminates part of the unwanted high-frequency noise through the muffler cotton in the porous structure of the inner wall and then enters the muffler package.

Specifically, the volume of the muffler 10 is 1L. The muffler in this volume will only eliminate unnecessary high frequencies, reduce the effect of eliminating medium and low frequency noise, and ensure that the sound wave effect is better in the sound wave mode.

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

Example 3

An automobile, comprising the sonic exhaust pipe assembly of Embodiment 1 or Embodiment 2.

Obviously, the above-mentioned embodiments of the present invention are only examples for clearly illustrating the present invention, rather than limiting the implementation of the present invention. For those of ordinary skill in the art, changes or modifications in other different forms can also be made on the basis of the above description. There is no need and cannot be exhaustive of all implementations here. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present utility model shall be included within the protection scope of the claims of the present utility model.

Claims (10)

1. The sound wave exhaust pipe assembly is characterized by comprising a sound attenuation bag (1) provided with a sound attenuation cavity (101), a connecting pipe (2) communicated with the sound attenuation bag (1), a first tail pipe (3) and a second tail pipe (4) which are provided with valves (301), and a switching pipe (5) and a first sound attenuation pipe (6) which are arranged in the sound attenuation cavity (101), wherein a plurality of sound attenuation baffles (7) are arranged in the sound attenuation cavity (101), and the sound attenuation baffles (7) are positioned between the second tail pipe (4) and the switching pipe (5); the adapter tube (5) is connected with the connecting tube (2), one end of the first silencing tube (6) is communicated with the adapter tube (5), and the other end of the first silencing tube is connected with the first tail tube (3); the tail end of the adapter tube (5) is provided with an opening and is communicated with the silencing cavity (101); the pipe wall of the first silencing pipe (6) is provided with a plurality of first silencing holes (601).

2. A sound wave exhaust pipe assembly according to claim 1, characterized in that the opening of the adapter pipe (5) is connected with a second muffler pipe (8) and a third muffler pipe (9); the second silencing pipe (8) penetrates through the silencing baffle (7) and the opening of the second silencing pipe is positioned between the inner wall of the silencing cavity (101) and the silencing baffle (7); the third silencing pipe (9) is arranged on the silencing baffle (7) and penetrates through the silencing baffles (7), one end of the third silencing pipe (9) is communicated with the second tail pipe (4), and the other end of the third silencing pipe is communicated with the silencing cavity (101).

3. A sound wave exhaust pipe assembly according to claim 2, characterized in that the first muffling pipe (6) passes through the muffling baffle (7), the first muffling orifice (601) being located between two muffling baffles (7).

4. The sound wave exhaust pipe assembly according to claim 3, wherein the first tail pipe (3) and the second tail pipe (4) are provided with two ends and connected to two sides of the silencing bag (1), the adapter pipe (5) is a four-way pipe, and the silencing baffles (7) are respectively arranged on two sides of the adapter pipe (5); the first silencing pipe (6) is provided with two and all connects in on two relative openings of switching pipe (5), second silencing pipe (8) are T type pipe, connect in switching pipe (5) are kept away from on the opening of connecting pipe (2) one end.

5. A sound and wave exhaust pipe assembly according to claim 1, characterised in that the sound-damping baffle (7) is provided with a plurality of second sound-damping holes (701).

6. A sound wave exhaust pipe assembly according to claim 1, characterized in that a sound deadening portion (602) is provided on the first sound deadening pipe (6), and the first sound deadening hole (601) is located on the sound deadening portion (602); the muffling portion (602) is a resistive muffler.

7. A sound wave exhaust pipe assembly according to claim 1, characterized in that said valve (301) is arranged on the straight pipe section of said first tail pipe (3) adjacent to said sound damping package (1).

8. A sound wave exhaust pipe assembly according to any of claims 1-7, characterized in that a muffler (10) is arranged on the connecting pipe (2).

9. A sound and wave exhaust pipe assembly according to claim 8, characterized in that the volume of the muffler (10) is 1L.

10. An automobile, characterized in that: comprising a sound wave exhaust pipe assembly according to any one of claims 1 to 9.

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