Exhaust system assembly

Abstract

An exhaust system assembly includes a first silencer, a second silencer, and a connecting pipe. The first silencer comprises a first shell and a first core tube fixed in the first shell. The second silencer comprises a second shell, a plurality of baffles fixed in the second shell, an air inlet core pipe fixed to the second shell, an air outlet core pipe penetrating through at least part of the baffles and fixed to the second shell, and a tuning pipe erected on at least part of the baffles. The connecting pipe is connected with the first core pipe and the air inlet core pipe. Compared with the prior art, the exhaust system assembly is relatively compact in structure, exhaust noise can be effectively reduced, and driving and riding comfort is improved.

Description

Technical Field

[0001] The utility model relates to an exhaust system component and belongs to the technical field of engine exhaust systems. Background Art

[0002] Exhaust system components in related art typically include several mufflers. These mufflers include a front muffler and a rear muffler. In some cases, the mufflers even include a middle muffler located between the front and rear mufflers. The muffler includes a housing and a core tube located within the second housing.

[0003] However, compared with traditional pure fuel-powered vehicles, hybrid models have added battery systems, and the chassis layout of the vehicles is becoming more and more compact, which also brings higher challenges to the design of exhaust system components.

[0004] Therefore, it is necessary to improve the relevant technologies and design a compact exhaust system component. Utility Model Content

[0005] The purpose of the utility model is to provide an exhaust system component with an improved structure.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: an exhaust system component, comprising:

[0007] A first muffler, the first muffler comprising a first shell and a first core tube fixed in the first shell, the first shell having a first port portion at one end, a second port portion at the other end, and a first internal space between the first port portion and the second port portion, one end of the first core tube being fixed to the inner side of the first port portion, and the other end of the first core tube being fixed to the inner side of the second port portion; the first core tube comprising a plurality of first air flow holes communicating with the first internal space;

[0008] The second muffler comprises a second shell, a plurality of baffles fixed in the second shell, an air intake core pipe fixed to the second shell, an air outlet core pipe penetrating at least part of the baffles and fixed to the second shell, and a tuning pipe mounted on at least part of the baffles; the second shell comprises a first end plate, a second end plate opposite to the first end plate, and a second internal space located between the first end plate and the second end plate; the plurality of baffles comprise a first baffle, a second baffle, and a third baffle arranged in sequence and spaced apart, the first baffle, the second baffle, and the third baffle being located in the second internal space and dividing the internal space into a first space located between the first end plate and the first baffle, a second space located between the first baffle and the second baffle, a third space located between the second baffle and the third baffle, and a fourth space located between the third baffle and the second end plate; the air intake core pipe is connected to the third space; the second baffle is provided with a plurality of first through-holes connecting the second space and the third space; the third baffle is provided with a plurality of second through-holes connecting the third space and the fourth space; the air outlet core pipe is connected to the first space; and

[0009] A connecting pipe connects the first core pipe and the air intake core pipe.

[0010] As a further improved technical solution of the present invention, the first muffler further includes a steel wool sleeve, wherein the steel wool sleeve is located between the outer surface of the other end of the first core tube and the inner surface of the second port portion.

[0011] As a further improved technical solution of the present invention, the first port portion includes a first tapered portion, the second port portion includes a second tapered portion, wherein the one end of the first core tube is welded and fixed to the inner side of the first port portion;

[0012] The first muffler further includes a first sound-absorbing cotton filled between the first shell and the first core tube.

[0013] As a further improved technical solution of the present invention, the second muffler includes a connecting plate connected between the second baffle and the third baffle, and the air intake core pipe passes through the second shell and is fixed to the connecting plate.

[0014] As a further improved technical solution of the present invention, the air intake core tube is welded and fixed to the second shell, the air intake core tube passes through the connecting plate, and the air intake core tube and the connecting plate are fixed by mechanical extrusion.

[0015] As a further improved technical solution of the present invention, the air outlet core tube passes through the first baffle, the second baffle, the third baffle and the second end plate.

[0016] As a further improved technical solution of the present invention, the air outlet core tube includes a straight tube portion mounted on the first baffle, the second baffle and the third baffle, and a bent tube portion connected to the straight tube portion, wherein the bent tube portion is located in the fourth space; the bent tube portion is provided with a plurality of air flow holes connected to the fourth space.

[0017] As a further improved technical solution of the present invention, the first baffle is not provided with a through hole directly connecting the first space and the second space, and the air outlet core tube passes through the first baffle to protrude into the first space.

[0018] As a further improved technical solution of the present invention, both ends of the tuning tube are respectively connected to the first space and the third space, and the tuning tube is further provided with a plurality of tuning holes penetrating through the tube wall and connected to the second space.

[0019] As a further improved technical solution of the present invention, the second silencer includes a second sound-absorbing cotton filled in the second space.

[0020] Compared to the prior art, the exhaust system assembly of the present invention includes a first muffler, a second muffler and a connecting pipe. The first muffler includes a first shell and a first core pipe fixed in the first shell. The second muffler includes a second shell, a plurality of baffles fixed in the second shell, an intake core pipe fixed to the second shell, an outlet core pipe passing through at least part of the baffles and fixed to the second shell, and a tuning pipe mounted on at least part of the baffles. The connecting pipe connects the first core pipe and the intake core pipe. With such an arrangement, the exhaust system assembly of the present invention has a relatively compact structure and can effectively reduce exhaust noise and improve driving comfort. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a top view of the exhaust system component of the present invention.

[0022] Figure 2 yes Figure 1 A three-dimensional perspective view of the first muffler.

[0023] Figure 3 yes Figure 2 Partial exploded view of the .

[0024] Figure 4 yes Figure 1 A partial enlarged view of the first core tube, the steel wool sleeve and the second port portion being connected to each other.

[0025] Figure 5 yes Figure 1 A three-dimensional perspective view of the second muffler.

[0026] Figure 6 yes Figure 5 Partial exploded view of the .

[0027] Figure 7 yes Figure 6 A three-dimensional schematic diagram of the second baffle, the third baffle, the first connecting plate and the air intake core tube being connected together. DETAILED DESCRIPTION

[0028] The following will describe the specific embodiments of the present invention in detail with reference to the accompanying drawings. If there are several specific embodiments, the features of these embodiments can be combined with each other without conflict. When the description refers to the drawings, unless otherwise specified, the same numbers or symbols in different drawings represent the same or similar elements. The contents described in the following exemplary embodiments do not represent all embodiments of the present invention. On the contrary, they are only examples of products that are consistent with the present invention and are described in the claims of the present invention.

[0029] The terms used in this utility model are for the purpose of describing specific embodiments only and are not intended to limit the scope of protection of this utility model. It should be understood that the terms "first", "second" and similar terms used in the specification and claims of this utility model do not indicate any order, quantity or importance, but are merely used to distinguish features.

[0030] Please refer to Figures 1 to 7 As shown, the present invention discloses an exhaust system assembly, comprising: a first muffler 100, a second muffler 200, a connecting pipe 300 connected between the first muffler 100 and the second muffler 200, and an upstream intake pipe 400 connected to the first muffler 100. In the illustrated embodiment of the present invention, the upstream intake pipe 400 is connected to the exhaust port of the engine. In the illustrated embodiment of the present invention, the first muffler 100 is a front muffler, and the second muffler 200 is a rear muffler.

[0031] Specifically, in the illustrated embodiment of the present invention, the first muffler 100 includes a first shell 1 and a first core tube 2 fixed within the first shell 1. The first shell 1 is provided with a first port portion 11 at one end, a second port portion 12 at the other end, and a first internal space 10 between the first port portion 11 and the second port portion 12. One end of the first core tube 2 is fixed to the inner side of the first port portion 11, and the other end of the first core tube 2 is fixed to the inner side of the second port portion 12. The first core tube 2 includes a plurality of first air flow holes 20 communicating with the first internal space 10.

[0032] In the illustrated embodiment of the present invention, the first port portion 11 includes a first tapered portion 111 , and the second port portion 12 includes a second tapered portion 121 , wherein the one end of the first core tube 2 is welded and fixed to the inner side of the first port portion 11 .

[0033] In addition, in order to improve the acoustic performance, the first muffler 100 further includes a first sound-absorbing cotton 21 filled between the first shell 1 and the first core tube 2 .

[0034] In addition, in the illustrated embodiment of the present invention, the first muffler 100 further includes a steel wool sleeve 3 , wherein the steel wool sleeve 3 is located between the outer surface of the other end of the first core tube 2 and the inner surface of the second port portion 12 .

[0035] Those skilled in the art will appreciate that in the illustrated embodiment of the present invention, the connection between the first shell 1 and the first core tube 2 is achieved by welding at one end of the first core tube 2, while the other end of the first core tube 2 is connected via the steel wool sleeve 3. With this arrangement, when the first muffler 100 expands due to heat, the first core tube 2 and the first shell 1 experience different thermal deformations due to their different rates of temperature change. The steel wool sleeve 3 can then absorb thermal stress, thereby improving the durability of the first muffler 100.

[0036] The second muffler 200 includes a second shell 4, a plurality of baffles fixed in the second shell 4, an air intake core pipe 5 fixed to the second shell 4, an air outlet core pipe 6 passing through at least part of the baffles and fixed to the second shell 4, and a tuning pipe 7 mounted on at least part of the baffles.

[0037] The second housing 4 includes a first end plate 41, a second end plate 42 opposite to the first end plate 41, and a second internal space 40 located between the first end plate 41 and the second end plate 42. The plurality of baffles include a first baffle 81, a second baffle 82, and a third baffle 83, which are arranged in sequence. The first baffle 81, the second baffle 82, and the third baffle 83 are located in the second internal space 40 and divide the internal space 40 into a first space 401 located between the first end plate 41 and the first baffle 81, a second space 402 located between the first baffle 81 and the second baffle 82, a third space 403 located between the second baffle 82 and the third baffle 83, and a fourth space 404 located between the third baffle 403 and the second end plate 42.

[0038] The first baffle 81 is a non-perforated baffle, i.e., the first baffle 81 is not provided with a through-hole that directly connects the first space 401 and the second space 402. The second baffle 82 is a perforated baffle, i.e., the second baffle 82 is provided with a plurality of first through-holes 821 that connect the second space 402 and the third space 403. The third baffle 83 is a perforated baffle, i.e., the third baffle 83 is provided with a plurality of second through-holes 831 that connect the third space 403 and the fourth space 404.

[0039] The air intake core pipe 5 is connected to the third space 403. Specifically, the second muffler 200 includes a connecting plate 84 connected between the second baffle 82 and the third baffle 83, and the air intake core pipe 5 passes through the second shell 4 and is fixed to the connecting plate 84. The connecting plate 84 can play a role in strengthening the structural strength. In the embodiment shown in the figure of the present utility model, the air intake core pipe 5 is welded and fixed to the second shell 4, the air intake core pipe 5 passes through the connecting plate 84, and the air intake core pipe 5 and the connecting plate 84 are fixed by mechanical extrusion (for example, expansion tube).

[0040] The outlet core pipe 6 is connected to the first space 401. Specifically, the outlet core pipe 6 passes through the first baffle 81, the second baffle 82, the third baffle 83, and the second end plate 42. The outlet core pipe 6 includes a straight pipe portion 61 mounted on the first baffle 81, the second baffle 82, and the third baffle 83, and a curved pipe portion 62 connected to the straight pipe portion 61, wherein the curved pipe portion 62 is located in the fourth space 404. The straight pipe portion 61 is provided with a plurality of exhaust holes 611 that pass through the pipe wall of the straight pipe portion 61 and are connected to the second space 402. The curved pipe portion 62 is provided with a plurality of air flow holes 621 that are connected to the fourth space 404. The outlet core pipe 6 passes through the first baffle 81 to protrude into the first space 401.

[0041] In the illustrated embodiment of the present invention, the tuning tube 7 is a hollow straight tube, with its two ends respectively connected to the first space 401 and the third space 403. The tuning tube 7 is also provided with a plurality of tuning holes 71 penetrating the tube wall and connected to the second space 402.

[0042] In addition, in order to improve the acoustic performance, the second muffler 200 includes a second sound-absorbing cotton 91 filled in the second space 402. The second muffler 200 may further include a third sound-absorbing cotton 92 filled in the fourth space 404.

[0043] The connecting pipe 300 connects the first core pipe 2 and the air intake core pipe 5 .

[0044] Compared to existing technologies, the first muffler 100 comprises a high-frequency pipe muffler composed of the first core pipe 2 and the first sound-absorbing cotton 21, which can eliminate high-frequency noise while also interrupting standing waves caused by the long pipe. The second muffler 200 includes multiple muffler chambers separated by baffles. The combination of these baffles and the tuning pipe 7 eliminates mid- and low-frequency noise. The exhaust system assembly of this utility model is relatively compact and can effectively reduce exhaust noise, improving driving comfort.

[0045] The above embodiments are only used to illustrate the present invention and are not intended to limit the technical solutions described in the present invention. The understanding of this specification should be based on technical personnel in the relevant technical field. Although this specification has described the present invention in detail with reference to the above embodiments, ordinary technical personnel in the field should understand that technical personnel in the relevant technical field can still modify or replace the present invention with equivalents, and all technical solutions and improvements that do not depart from the spirit and scope of the present invention should be covered by the scope of the claims of the present invention.

Claims

1. An exhaust system component, characterized in that: include: A first muffler, the first muffler comprising a first shell and a first core tube fixed in the first shell, the first shell having a first port portion at one end, a second port portion at the other end, and a first internal space between the first port portion and the second port portion, one end of the first core tube being fixed to the inner side of the first port portion, and the other end of the first core tube being fixed to the inner side of the second port portion; the first core tube comprising a plurality of first air flow holes communicating with the first internal space; The second muffler comprises a second shell, a plurality of baffles fixed in the second shell, an air intake core pipe fixed to the second shell, an air outlet core pipe penetrating at least part of the baffles and fixed to the second shell, and a tuning pipe mounted on at least part of the baffles; the second shell comprises a first end plate, a second end plate opposite to the first end plate, and a second internal space located between the first end plate and the second end plate; the plurality of baffles comprise a first baffle, a second baffle, and a third baffle arranged in sequence and spaced apart, the first baffle, the second baffle, and the third baffle being located in the second internal space and dividing the internal space into a first space located between the first end plate and the first baffle, a second space located between the first baffle and the second baffle, a third space located between the second baffle and the third baffle, and a fourth space located between the third baffle and the second end plate; the air intake core pipe is connected to the third space; the second baffle is provided with a plurality of first through-holes connecting the second space and the third space; the third baffle is provided with a plurality of second through-holes connecting the third space and the fourth space; the air outlet core pipe is connected to the first space; and A connecting pipe connects the first core pipe and the air intake core pipe.

2. The exhaust system assembly according to claim 1, wherein: The first muffler further includes a steel wool sleeve, wherein the steel wool sleeve is located between an outer surface of the other end of the first core tube and an inner surface of the second port portion.

3. The exhaust system assembly according to claim 1, wherein: The first port portion includes a first tapered portion, and the second port portion includes a second tapered portion, wherein the one end of the first core tube is welded and fixed to the inner side of the first port portion; The first muffler further includes a first sound-absorbing cotton filled between the first shell and the first core tube.

4. The exhaust system assembly according to claim 1, wherein: The second muffler includes a connecting plate connected between the second baffle and the third baffle, and the air intake core pipe passes through the second shell and is fixed to the connecting plate.

5. The exhaust system assembly according to claim 4, wherein: The air intake core tube is welded and fixed to the second shell, the air intake core tube passes through the connecting plate, and the air intake core tube and the connecting plate are fixed by mechanical extrusion.

6. The exhaust system assembly according to claim 1, wherein: The air outlet core tube passes through the first baffle, the second baffle, the third baffle and the second end plate.

7. The exhaust system assembly according to claim 6, wherein: The air outlet core tube includes a straight tube portion mounted on the first baffle, the second baffle and the third baffle, and a bent tube portion connected to the straight tube portion, wherein the bent tube portion is located in the fourth space; the bent tube portion is provided with a plurality of air flow holes connected to the fourth space.

8. The exhaust system assembly of claim 1, wherein: The first baffle is not provided with a through hole directly connecting the first space and the second space, and the air outlet core tube passes through the first baffle to protrude into the first space.

9. The exhaust system assembly of claim 1, wherein: The two ends of the tuning tube are respectively connected to the first space and the third space. The tuning tube is further provided with a plurality of tuning holes which penetrate through the tube wall and are connected to the second space.

10. The exhaust system assembly of claim 1, wherein: The second muffler includes a second sound-absorbing cotton filled in the second space.

Images