WO2023116089A1

WO2023116089A1 - Engine exhaust apparatus

Info

Publication number: WO2023116089A1
Application number: PCT/CN2022/119928
Authority: WO
Inventors: 谢方; 陈风云; 卞政; 李伟
Original assignee: 上海天纳克排气系统有限公司
Priority date: 2021-12-24
Filing date: 2022-09-20
Publication date: 2023-06-29
Also published as: CN216518226U

Abstract

An engine exhaust apparatus, comprising a thickness-variable region that is integrally formed, wherein the thickness-variable region comprises a first wall portion having a first thickness and a second wall portion having a second thickness, and the first thickness is greater than the second thickness; the first wall portion comprises a first surface and a second surface, and the first thickness is a distance between the first surface and the second surface; the second wall portion comprises a third surface and a fourth surface, and the second thickness is a distance between the third surface and the fourth surface; and the first surface and the third surface are located at the same side, and the second surface and the fourth surface are located at the same side. The engine exhaust apparatus of the present application is easy to realize light weight and relatively high in reliability.

Description

engine exhaust

This application claims the priority of a Chinese patent application with an application date of December 24, 2021, an application number of 202123300026.2, and an invention title of "engine exhaust device", the entire contents of which are incorporated in this application by reference.

technical field

The application relates to an engine exhaust device, which belongs to the technical field of engine exhaust post-treatment.

Background technique

The engine exhaust device usually includes parts such as the outer casing, the baffle, and the core pipe. Please refer to Fig. 2, in order to realize the thinning of the parts of the engine exhaust device in the related art, plates 1' and 2' of different thickness are usually welded together by laser, that is, thick plate pipes are used in the load area, and thin plate pipes are used in other areas. Sheet pipe. However, the pipes spliced together by welding have the following problems: due to the butt joint or lap joint of plates with different thicknesses, the formability will be affected by the existence of the weld and the sudden change in the thickness of the joint; in addition, the weld and its vicinity will produce Local hardening requires a heat treatment to eliminate the hardening effect, which increases the complexity of the process.

Contents of the invention

The purpose of the present application is to provide an engine exhaust device that is easy to achieve light weight and has relatively high reliability.

To achieve the above object, the present application adopts the following technical solution: an engine exhaust device, which includes an integrally formed variable thickness region, wherein the variable thickness region includes a first wall portion with a first thickness and a wall portion with a second thickness. A second wall portion, the first thickness is greater than the second thickness, the first wall portion includes a first surface and a second surface, the first thickness is between the first surface and the second surface The distance between; the second wall portion includes a third surface and a fourth surface, the second thickness is the distance between the third surface and the fourth surface, wherein the first surface and the The third surface is located on the same side, and the second surface and the fourth surface are located on the same side.

As a further improved technical solution of the present application, the first wall part is directly connected to the second wall part; or

The variable thickness region includes a transition wall portion connecting the first wall portion and the second wall portion, wherein the transition wall portion includes a third thickness, and the third thickness is between the first thickness and the second wall portion. Between the second thickness.

As a further improved technical solution of the present application, the engine exhaust device includes a connecting pipe, the connecting pipe includes a first connecting end and a second connecting end, and the variable thickness region is provided at the first connecting end and/or the second connection end.

As a further improved technical solution of the present application, the connecting pipe includes an intermediate pipe located between the first connecting end and the second connecting end, and the intermediate pipe is used to connect with the hook, wherein the variable thickness region set on the middle tube.

As a further improved technical solution of the present application, the engine exhaust device includes an outer casing, wherein the outer casing is provided with an intake port, and the variable thickness region is arranged on the outer casing and corresponds to the area of the intake port described above.

As a further improved technical solution of the present application, the engine exhaust device includes an outer shell, a first end cover fixed to one end of the outer shell, and a second end cover fixed to the other end of the outer shell, corresponding to At the first end cover and/or the second end cover, the outer casing is provided with a matching area connected with a hook or a bracket, wherein the variable thickness area is provided in the matching area.

As a further improved technical solution of the present application, the engine exhaust device includes an outer shell formed by winding, wherein the outer shell includes a longitudinally extending longitudinal seam engagement area, and the variable thickness area is provided at the longitudinal seam engagement area. district.

As a further improved technical solution of the present application, the outer casing includes a side punching hole, the variable thickness region is provided on the outer casing, and the variable thickness region extends along the longitudinal direction and corresponds to the side punching hole.

As a further improved technical solution of the present application, the engine exhaust device includes an outer casing and a core assembly located in the outer casing, and the core assembly includes an inner pipe body and at least one baffle connected to the inner pipe body. plate, wherein the variable thickness region is provided at the connection region between the baffle plate and the inner pipe body.

As a further improved technical solution of the present application, the engine exhaust device includes an outer shell and a baffle and/or an end cover matched with the outer shell, wherein the baffle and/or the end cover are provided with punching A hole, the variable thickness region is provided on the baffle plate and/or the region of the end cover corresponding to the punched hole.

Compared with the prior art, the engine exhaust device of the present application includes an integrally formed variable-thickness region. On the one hand, the weight can be reduced through the thinner wall; on the other hand, through the integrally formed design, A series of problems caused by welding and splicing the pipe body are avoided, and the reliability of the engine exhaust device is improved.

Description of drawings

FIG. 1 is a schematic diagram of an engine exhaust device of the present application in a first embodiment.

Fig. 2 is a schematic diagram of plates with different thicknesses welded together by laser in the related art.

Fig. 3 is a schematic diagram of the variable thickness region of the present application in the first embodiment.

Fig. 4 is a schematic diagram of the variable thickness region in the second embodiment of the present application.

Fig. 5 is a schematic diagram of the variable thickness region of the present application in a third embodiment.

FIG. 6 is a schematic diagram of a fourth embodiment of the variable thickness region of the present application.

FIG. 7 is a schematic diagram of a fifth embodiment of the variable thickness region of the present application.

Fig. 8 is a schematic diagram of a connecting pipe in an embodiment.

Figure 9 is a schematic illustration of a core tube assembly in one embodiment.

Fig. 10 is a schematic diagram of the second embodiment of the engine exhaust device of the present application.

Fig. 11 is a schematic diagram of the third embodiment of the engine exhaust device of the present application.

Fig. 12 is a schematic diagram of the fourth embodiment of the engine exhaust device of the present application.

Fig. 13 is a schematic diagram of the fifth embodiment of the engine exhaust device of the present application.

Fig. 14 is a schematic cross-sectional view along line A-A in Fig. 13 .

Fig. 15 is a schematic view of the baffle in the first embodiment.

Fig. 16 is a schematic view of the baffle in a second embodiment.

Fig. 17 is a schematic view of the baffle in a third embodiment.

Fig. 18 is a schematic view of the baffle in a fourth embodiment.

Detailed ways

Specific implementations of the present application will be described in detail below with reference to the accompanying drawings. If there are several specific implementations, the features in these implementations can be combined without conflict. When the description refers to the drawings, unless otherwise stated, the same numerals or symbols in different drawings indicate the same or similar elements. What is described in the following exemplary embodiments does not represent all implementations of the application, but rather, they are merely examples of products consistent with the application described in the claims of the application.

The terminology used in this application is only for the purpose of describing specific implementations, and is not intended to limit the protection scope of this application. It should be understood that words such as "first", "second" and similar words used in the description and claims of the present application do not indicate any order, quantity or importance, but are only used to distinguish the nomenclature of features .

Please refer to FIG. 1, FIG. 3 to FIG. 18, the present application discloses an engine exhaust device 100, which includes a first muffler 10, a second muffler 20, and a first muffler connected to the first muffler 10. A pipe body 30 and a second pipe body 40 connecting the first muffler 10 and the second muffler 20 . The first muffler 10 and/or the second muffler 20 of the engine exhaust device 100 includes an outer shell 1 and a core assembly 2 inside the outer shell 1 .

3 to 7, the engine exhaust device 100 includes an integrally formed variable thickness region 50, wherein the variable thickness region 50 includes a first wall portion 11 with a first thickness T1 and a second thickness. For the second wall portion 12 of T2, the first thickness T1 is greater than the second thickness T2. The first wall portion T1 includes a first surface 111 and a second surface 112, and the first thickness T1 is the distance between the first surface 111 and the second surface 112; the second wall portion 12 Including the third surface 121 and the fourth surface 122, the second thickness T2 is the distance between the third surface 121 and the fourth surface 122, wherein the first surface 111 and the third surface 121 Located on the same side, the second surface 112 and the fourth surface 122 are located on the same side.

Please refer to FIG. 3 , in one embodiment of the present application, the first wall portion 11 is directly connected to the second wall portion 12 , and the first surface 111 protrudes from the third surface 121 , the second surface 112 is flush with the fourth surface 122 .

Please refer to FIG. 4, in another embodiment of the present application, the first wall portion 11 is directly connected to the second wall portion 12, and the second surface 112 protrudes from the fourth surface. 122 , the first surface 111 is flush with the third surface 121 .

Please refer to FIG. 5 to FIG. 7 , in another embodiment of the present application, the variable thickness region 50 includes a transition wall portion 13 connecting the first wall portion 11 and the second wall portion 12 , Wherein the transition wall portion 13 includes a third thickness T3. In the embodiment illustrated in the present application, the third thickness T3 is gradual, and the third thickness T3 is between the first thickness T1 and the second thickness T2.

Please refer to FIG. 8 , the engine exhaust device 100 includes a connecting pipe 3 , and the connecting pipe 3 is the first pipe body 30 and/or the second pipe body 40 . The connecting pipe 3 includes a first connecting end 31 , a second connecting end 32 and an intermediate pipe 33 located between the first connecting end 31 and the second connecting end 32 . The variable thickness region 50 (indicated by the shaded part in the figure, the same below) is provided at the first connection end 31 and/or the second connection end 32 . The middle pipe 33 is used to connect with the hook 60 , wherein the variable thickness region 50 is disposed on the middle pipe 33 .

Please refer to FIG. 9, the core assembly 2 includes an inner tube 21 and at least one baffle 22 connected to the inner tube 21, wherein the variable thickness region 50 is located between the baffle 22 and the baffle 22. The connection area of the inner tube body 21; the variable thickness area 50 can also be set at the connection area between the inner tube body 21 and the outer shell 1 or the end cap.

Please refer to FIG. 10 to FIG. 13 , the outer casing 1 is provided with an air inlet port 14 , and the variable thickness region 50 is arranged on the outer casing 1 and corresponds to the inlet port 14 in the circumferential direction. area. The engine exhaust device 100 may further include a first end cover 15 fixed to one end of the outer shell 1 and a second end cover 16 fixed to the other end of the outer shell 1 . Corresponding to the first end cover 15 and/or the second end cover 16, the outer casing 1 is provided with a matching area 17 connected with the hook 60 or the bracket, wherein the variable thickness area 50 is located at The matching zone 17 .

Please refer to FIG. 13 and FIG. 14 , the engine exhaust device 100 includes an outer shell 1 formed by winding, wherein the outer shell 1 includes a longitudinally extending longitudinal seam engagement area 18, and the variable thickness area 50 is set In the occlusal area 18 of the longitudinal seam. In addition, the outer casing 1 includes a side punching hole 19 , the variable thickness region 50 is provided on the outer casing 1 , and the variable thickness region 50 extends along the longitudinal direction and corresponds to the side punching hole 19 .

Please refer to FIGS. 15 to 18 , the engine exhaust device 100 includes a baffle and/or an end cover 70 matched with the outer shell 1, wherein the baffle and/or the end cover 70 are set There is a punching hole 701 , and the variable thickness region 50 is provided on the baffle plate and/or the area of the end cover 70 corresponding to the punching hole 701 .

Compared with the prior art, the engine exhaust device 100 of the present application includes an integrally formed variable thickness region 50, on the one hand, the weight can be reduced through the thinner wall; on the other hand, through the integrally formed The design avoids a series of problems caused by welding and splicing the pipe body, and improves the reliability of the engine exhaust device 100 .

The above embodiments are only used to illustrate the present application rather than limit the technical solutions described in the present application. The understanding of this specification should be based on those skilled in the art, although this specification has described the application in detail with reference to the above-mentioned embodiments. Note, however, those of ordinary skill in the art should understand that those skilled in the art can still make modifications or equivalent replacements to this application, and all technical solutions and improvements that do not depart from the spirit and scope of this application should be covered in within the scope of the claims of this application.

Claims

An engine exhaust device, characterized in that: the engine exhaust device includes an integrally formed variable thickness region, wherein the variable thickness region includes a first wall portion with a first thickness and a second wall portion with a second thickness part, the first thickness is greater than the second thickness, the first wall part includes a first surface and a second surface, and the first thickness is the distance between the first surface and the second surface ; The second wall portion includes a third surface and a fourth surface, the second thickness is the distance between the third surface and the fourth surface, wherein the first surface and the third surface Located on the same side, the second surface and the fourth surface are located on the same side.
The engine exhaust device according to claim 1, wherein: said first wall portion is directly connected to said second wall portion; or

The variable thickness region includes a transition wall portion connecting the first wall portion and the second wall portion, wherein the transition wall portion includes a third thickness, and the third thickness is between the first thickness and the second wall portion. Between the second thickness.
The engine exhaust device according to claim 1, characterized in that: the engine exhaust device includes a connecting pipe, the connecting pipe includes a first connecting end and a second connecting end, and the variable thickness region is set on the the first connection end and/or the second connection end.
The engine exhaust device according to claim 3, wherein the connecting pipe includes an intermediate pipe located between the first connecting end and the second connecting end, and the intermediate pipe is used to connect with the hook , wherein the variable thickness region is set on the middle tube.
The engine exhaust device according to claim 1, characterized in that: the engine exhaust device comprises an outer casing, wherein an air intake port is arranged on the outer casing, and the variable thickness region is arranged on the outer casing And corresponding to the region of the intake port in the circumferential direction.
The engine exhaust device according to claim 1, wherein the engine exhaust device comprises an outer casing, a first end cover fixed to one end of the outer casing, and a first end cover fixed to the other end of the outer casing. The second end cover, corresponding to the first end cover and/or the second end cover, the outer shell is provided with a matching area connected with a hook or a bracket, wherein the variable thickness area is provided at the the matching area.
The engine exhaust device according to claim 1, characterized in that: said engine exhaust device comprises an outer casing formed by winding, wherein said outer casing includes a longitudinally extending longitudinal seam nip, said variable thickness region Located in the occlusal area of the longitudinal seam.
The engine exhaust device according to claim 7, wherein the outer casing includes side punching holes, the variable thickness region is provided on the outer casing, the variable thickness region extends along the longitudinal direction and corresponds to The side is punched.
The engine exhaust device according to claim 1, characterized in that: said engine exhaust device comprises an outer casing and a core assembly located in said outer casing, said core assembly includes an inner pipe body and a At least one baffle plate connected to the pipe body, wherein the variable thickness region is provided at the connection area between the baffle plate and the inner pipe body.
The engine exhaust device according to claim 1, characterized in that: the engine exhaust device comprises an outer casing and a baffle and/or an end cover matched with the outer casing, wherein the baffle and/or The end cover is provided with a punching hole, and the variable thickness region is provided on the baffle plate and/or the area of the end cover corresponding to the punching hole.