JP7379431B2 - Engine passage member and its manufacturing method - Google Patents

Description

The present invention relates to an engine passage member and a method for manufacturing the same.

BACKGROUND ART Conventionally, it has been proposed to manufacture an engine exhaust pipe from a pipe material or by joining half-split bodies in the middle.

For example, Patent Document 1 discloses a catalytic converter in which an elliptical exhaust gas purification device is mounted within an elliptical shell formed by joining half bodies in the middle. In this catalytic converter, coupling flanges are fixed to the opening edges of the exhaust gas inlet and the exhaust gas outlet of the shell, respectively.

Utility Model Publication No. 62-185817

In the catalytic converter described in Patent Document 1, coupling flanges are fixed to the opening edges of the exhaust gas inlet and the exhaust gas outlet of the shell, respectively, and the shape and dimensions of the connection port of the catalytic converter are fixed. Therefore, the degree of freedom in installing the catalytic converter is low, and, for example, the number of vehicles in which the catalytic converter of a predetermined size can be used is limited.

SUMMARY OF THE INVENTION An object of the present invention is to provide a configuration that makes it possible to increase the degree of freedom in installing passage members of an engine such as a catalytic converter.

In order to achieve the above object, a first aspect of the present invention includes:
An engine passage member,
a first divided body including a first protrusion having a first divided surface;
a second divided body including a second protrusion having a second divided surface;
The first protrusion and the second protrusion are connected with the second split surface in contact with the first split surface, thereby creating a passage and a pipe continuous to the passage. To provide a passage member for an engine, characterized in that a connecting spherical part is formed.

According to the first aspect of the present invention having the above configuration, the passage member is formed with a spherical portion to which a pipe member such as another exhaust pipe can be attached. This spherical part makes it possible to connect the tube members from various directions and thus to increase the degree of freedom in the installation of the passage members of the engine. Note that since the first divided body and the second divided body can have various shapes, the shape of the passage member can also be designed flexibly.

Preferably, the first divided body includes a first passage recess and a first connection recess connected to the first passage recess, and the second divided body includes a second passage recess, a second connection recess connected to the second passage recess, the passage section is formed to include the first passage recess and the second passage recess, and the spherical part is connected to the first connection recess. It is formed to include a recess and the second connection recess. With this configuration, the aforementioned passage portion and the aforementioned spherical portion can be easily formed in the passage member.

Preferably, it is formed to include a third connecting recess connected to the first passage recess in the first divided body and a fourth connecting recess connected to the second passage recess in the second divided body. A second spherical body for connecting a pipe is further provided continuously in the passage section. With this configuration, the spherical portions can be formed on both sides of the passage portion of the passage member, thereby further increasing the degree of freedom in attaching the passage member.

Preferably, an exhaust gas purification catalyst is further provided in the passage section. With this configuration, the first divided body and the second divided body can be used as a catalyst outer cylinder, and the passage member can be used as a catalytic converter.

Preferably, a protrusion for fixing the exhaust purification catalyst is provided in the passage. With this configuration, the catalyst can be fixed and positioned, for example, by the protrusion, and furthermore, the catalyst can be prevented from interfering with the inner wall of the passage member, and damage to the catalyst can also be prevented.

Preferably, the spherical portion is further provided with a gas sensor. In the spherical part on the upstream side or the downstream side of the passage part, gas uniformity is promoted by collision with the inner wall surface of the spherical part. Therefore, by providing a gas sensor, such as an oxygen sensor, in the spherical portion, it is possible to improve the measurement accuracy of the gas flowing through the passage member.

Note that the present invention also resides in a vehicle equipped with the above-mentioned engine passage member.

Moreover, the second aspect of the present invention is
A method for manufacturing an engine passage member, the method comprising:
A first divided body made of metal is provided with a first protruding portion having a first divided surface, and a second divided body made of metal is provided with a second protruded portion having a second divided surface. process and
The first projecting portion and the second dividing surface are brought into contact with the first dividing surface so as to form a passage portion and a tube connecting spherical portion continuous to the passage portion. and a step of welding the projecting portion of the material to the protruding portion of the material.

According to the second aspect of the above configuration, the passage member of the engine can be manufactured by welding the first protrusion of the first divided body and the second protrusion of the second divided body. This forms a spherical portion in the passage member to which a pipe member such as another exhaust pipe can be attached. This spherical part makes it possible to connect the tube members from various directions and thus to increase the degree of freedom in the installation of the passage members of the engine. Note that since the first divided body and the second divided body can have various shapes, the shape of the passage member can also be designed flexibly.

Preferably, the spherical portion includes a first hemispherical portion of the first divided body and a second hemispherical portion of the second divided body. At this time, the manufacturing method may further include the step of cutting at least one of the first hemispherical part and the second hemispherical part to connect the tube member. This step allows the tube member to be connected to the spherical portion from various directions.

Preferably, the weld is a seam weld. Thereby, the airtightness between the first dividing surface and the second dividing surface can be improved.

According to each of the first aspect and the second aspect of the present invention, since the above configuration is provided, it is possible to increase the degree of freedom in attaching the passage member of the engine.

FIG. 2 is a front view of a passage member of an engine according to a first embodiment of the present invention. FIG. 2 is a top view of the divided body of the passage member in FIG. 1; FIG. 3 is a front view of the divided body of FIG. 2; FIG. 2 is a diagram showing a state in which the passage member of FIG. 1 is in the middle of being created. 2 is a diagram illustrating the connection of a tube member to a bulbous portion of the passage member of FIG. 1; FIG. 6 is a view showing the connection of the tube member to the bulbous portion of the passage member of FIG. 5 from another angle; FIG. 2 is a flowchart showing a manufacturing process of the passage member of FIG. 1. FIG. It is an expanded body of the passage member of the engine based on 2nd Embodiment of this invention.

Embodiments according to the present invention will be described below based on the accompanying drawings. Identical parts (or configurations) are given the same reference numerals, and their names and functions are also the same. Therefore, detailed description thereof will not be repeated.

An engine passage member 10 according to a first embodiment of the present invention will be described based on FIGS. 1 to 7. The passage member 10 is an exhaust passage member, and more specifically, an exhaust purification device, that is, a catalytic converter. Note that the engine equipped with the passage member 10, that is, the internal combustion engine, is mounted on a vehicle (here, a motorcycle), but is not limited to this, and may be mounted on a vehicle equipped with three or four or more wheels, such as a car. good.

FIG. 1 shows a passage member 10 of an engine. The passage member 10 includes a first divided body 12 and a second divided body 14. Since the second divided body 14 has the same configuration as the first divided body 12, that is, the same shape and the same dimensions, the first divided body 12 will first be explained based on FIGS. 2 and 3, and the second divided body 14 will be explained based on FIGS. A detailed explanation of the divided body 14 will be omitted. In other words, both the first divided body 12 and the second divided body 14 are half-divided bodies.

FIG. 2 shows a top view of the first divided body 12, and FIG. 3 shows a front view of the first divided body 12. The first divided body 12 is manufactured by pressing a single metal plate, here a steel plate. However, the first divided body 12 may be manufactured by a method other than press working. Further, although the shape of this plate material is approximately rectangular, it is not limited to the rectangular shape, and may have other shapes. Note that the material of the first divided body 12 is not limited to steel, and may be other metal materials, such as an Al alloy.

The first divided body 12 includes two connection recesses 12a and 12b and a passage recess 12c. The two connection recesses 12a and 12b and the passage recess 12c are formed to be recessed on the same side in the thickness direction of the first divided body 12. The two connection recesses 12a and 12b are arranged with the passage recess 12c in between. The connecting recess 12a is adjacent to and continuous with the passage recess 12c, and the connecting recess 12b is adjacent and continuous with the passage recess 12b on the side opposite to the connecting recess 12a. As shown in FIG. 2, the first divided body 12 has a connection recess 12a, a passage recess 12c, and a connection recess 12b that are continuous in this order along the axis Ax, thereby forming a single recess (hereinafter referred to as a first recess). ) Compartment 12r. Hereinafter, one of the connection recesses 12a that will be positioned on the engine main body side (not shown) will be referred to as an upstream connection recess, and the other connection recess 12b will be referred to as a downstream connection recess, but these may have an opposite relationship. can. Note that either one of the upstream connection recess 12a and the downstream connection recess 12b corresponds to the first connection recess, the other corresponds to the third connection recess, and the passage recess 12c corresponds to the first passage recess. do.

The first divided body 12 includes a protrusion portion (hereinafter referred to as a first protrusion portion) 12d having a dividing surface (hereinafter referred to as a first divided surface) 12f. The first protrusion 12d extends here around the upstream connecting recess 12a, the passage recess 12c and the downstream connecting recess 12b, in particular here over the entire circumference thereof. The first dividing surface 12f is a flat surface, extends annularly around the first recess 12r, and is continuous with the first recess 12r.

The upstream connecting recess 12a and the downstream connecting recess 12b each have a substantially hemispherical shape. Since the first divided body 12 is manufactured by pressing a single steel plate, the portion of the first divided body 12 of the upstream connecting recess 12a is approximately hemispherical, as shown in FIGS. 2 and 3. The first divided body 12 portion of the downstream connecting recess 12b is a hemispherical portion H12 having a substantially hemispherical shape. Here, the upstream connecting recess 12a and the downstream connecting recess 12b have the same shape and the same dimensions, but may have different shapes and/or different dimensions.

The passage recess 12c has a main passage portion 12g having a substantially semi-cylindrical shape, and has an upstream connecting portion 12h that connects to the upstream connecting recess 12a and a downstream connecting portion 12i that connects to the downstream connecting recess 12b. The main passage portion 12g of the passage recess 12c may be directly continuous with the upstream connecting recess 12a and the downstream connecting recess 12b, respectively, without the upstream connecting portion 12h and the downstream connecting portion 12i. Note that the upstream connecting portion 12h and the downstream connecting portion 12i each have a shape that tapers away from the passage recessed portion 12c.

The second divided body 14 includes two connection recesses 14a, 14b and a passage recess 14c. These recesses 14a, 14b, and 14c continuously form a second recess 14r, around which a protrusion (second protrusion) 14d having a dividing surface (hereinafter referred to as second dividing surface) 14f is formed. extend. Further, the portion of the second divided body 14 of the upstream connection recess 14a is a substantially hemispherical portion H21, and the portion of the second divided body 14 of the downstream connection recess 14b is a substantially hemispherical portion H21. H22, where these hemispherical parts H21, H22 have the same shape and the same dimensions. Further, the passage recess 14c has a main passage portion 14g having a substantially semi-cylindrical shape, and has an upstream connecting portion 14h continuous to the upstream connecting recess 14a and a downstream connecting portion 14i continuing to the downstream connecting recess 14b. Connection recesses 14a, 14b, main passage portion 14g, passage recess 14c having upstream connecting portion 14h and downstream connecting portion 14i, second protrusion 14d, second dividing surface 14f, second recess 14r, hemispherical The parts H21 and H22 are the connecting recesses 12a and 12b of the first divided body 12, the main passage part 12g, the passage recess 12c having the upstream connecting part 12h and the downstream connecting part 12i, the first protruding part 12d, and the first The corresponding parts correspond to the dividing surface 12f, the first recess 12r, and the hemispherical parts H11 and H12, respectively, and are substantially the same in terms of configuration and dimensions. In order to show this correspondence, in FIGS. 2 and 3, corresponding symbols in the second divided body 14 are written in parentheses for parts of the first divided body 12 that correspond to each part in the second divided body 14. Attached with This also applies to the following description. Note that either one of the connection recess 14a, which is the upstream connection recess, and the connection recess 14b, which is the downstream connection recess, corresponds to the second connection recess, the other corresponds to the fourth connection recess, and the passage recess 14c corresponds to the second passage recess.

The passage recess 12c of the first divided body 12 is further provided with protrusions 12j and 12k. The protrusions 12j and 12k are separated from each other and extend in an arc shape. The protrusions 12j and 12k extend perpendicularly to the axis Ax. The protrusion 12j is provided at a position closer to the upstream connection recess 12a in the passage recess 12c, and the protrusion 12k is provided at a position closer to the downstream connection recess 12b in the passage recess 12c.

The passage recess 14c of the second divided body 14 is provided with protrusions 14j and 14k. The protrusions 14j and 14k correspond to the protrusions 12j and 12k, respectively, and when the second divided body 14 is joined to the first divided body 12 as described below, the corresponding protrusions 12j and 12k correspond to the protrusions 12j and 12k. It is provided so as to form an annular protrusion.

Note that the projections 12j, 12k, 14j, and 14k are manufactured separately from the divided bodies 12 and 14, and are connected to the corresponding divided bodies 12 and 14 by welding or the like. However, these projections 12j, 12k, 14j, and 14k may also be formed integrally with the divided bodies 12, 14 from the beginning as part of the divided bodies 12, 14. For example, the protrusions 12j, 12k, 14j, 14k can be formed when the divided bodies 12, 14 are pressed.

When forming the passage member 10, the segments 12, 14 are connected. Here, the divided bodies 12 and 14 are joined together by welding, particularly by seam welding, which is a type of resistance welding. Note that the divided bodies 12 and 14 may be integrated by other connecting means, in particular by joining means, specifically by other welding.

When the divided bodies 12 and 14 are integrated, the divided bodies 12 and 14 are moved closer to each other as shown by the arrows in FIG. The second divided surfaces 14f of the divided bodies 14 are brought into contact with each other. Then, the first protrusion 12d and the second protrusion 14d are connected, in this case welded.

At this time, since the passage member 10 is a catalytic converter as described above, the purifying member 16 having a carrier on which a catalyst is supported is connected to the passage recess 12c of the first divided body 12 and the passage of the second divided body 14. It is sandwiched between the recess 14c and the passage space Sm between them. At this time, the purifying member 16 is held directly between the protrusions 12j and 12k of the passage recess 12c and the protrusions 14j and 14k of the passage recess 14c. It is separated from the passage recess 14c of the second divided body 14.

As a result, the passage member 10 in which the purifying member 16 is held between the first divided body 12 and the second divided body 14, that is, the catalytic converter 10 is manufactured.

In the passage member 10, an upstream connection space Su, which is a first connection space, is defined by the upstream connection recess 12a of the first divided body 12 and the upstream connection recess 14a of the second divided body 14. . Further, the downstream connection recess 12b of the first divided body 12 and the downstream connection recess 14b of the second divided body 14 define a downstream connection space Sd, which is a second connection space. Each of the upstream connection space Su and the downstream connection space Sd is continuous with a passage space Sm defined by the passage recess 12c and the passage recess 14c. A substantially spherical upstream connection space Su communicates with the upstream side of the substantially cylindrical passage space Sm in which the purification member 16 is disposed, and a substantially spherical downstream connection space Sd communicates with the downstream side of the passage space Sm. communicate.

The upstream connection space Su defined by the hemispherical upstream connection recess 12a and the hemispherical upstream connection recess 14a is approximately spherical, and it is formed by the spherical part 10a formed by the combination of the hemispherical parts H11 and H21. Compartments are formed within. The upstream connection space Sd defined by the hemispherical downstream connection recess 12b and the hemispherical downstream connection recess 14b is approximately spherical; A section is formed within the portion 10b. The passage space Sm defined by the passage recess 12c and the passage recess 14c is approximately cylindrical, and is defined within the approximately cylindrical passage 10c. That is, as shown in FIG. 1, the passage member 10 is configured such that the spherical part 10a, the passage part 10c, and the spherical part 10b are successively lined up in this order, and a continuous space is defined within the passage member 10. In addition, here, the term "spherical" in the term "spherical part" means that when a virtual object is defined as a closed virtual object by extending its outer wall surface (or inner wall surface), the virtual object is approximately spherical. For example, it may include the shape of a prolate ellipsoid or a prolate sphere, and may also include the shape of a polyhedron such as an icosahedron or a shape close to it. This also applies to "hemispherical" shapes.

Now, since the spherical parts 10a and 10b are substantially spherical, there is a high degree of freedom in the connection direction of other pipe members, such as exhaust pipes, thereto.

For example, as shown in FIGS. 5 and 6, in the spherical part 10a that defines the upstream connection space Su, a part of the upstream connection recess 12a is cut, and the upstream exhaust pipe is connected to the cut part Cu. For example, an exhaust pipe 20 connected to an exhaust port of the engine body can be connected. The cut portion Cu has a size and shape depending on the size and shape of the exhaust pipe 20. The exhaust pipe 20 is connected to the cut portion Cu here by welding.

Further, as shown in FIGS. 5 and 6, in the spherical portion 10b that partitions and forms the downstream connection space Sd, a part of the downstream connection recess 12b and a part of the downstream connection recess 14b are cut, A downstream exhaust pipe, for example, a muffler or an exhaust pipe 22 connected to the muffler can be connected to the cut portion Cd. The cutting portion Cd has a size and shape that correspond to the size and shape of the exhaust pipe 22. The exhaust pipe 22 is connected to the cut portion Cd here by welding.

Note that, as schematically shown in FIGS. 5 and 6, here, the spherical portion 10a is provided with an oxygen sensor S1, and the spherical portion 10b is provided with an oxygen sensor S2. This is to detect purification of the exhaust gas by the purification member 16. Note that an oxygen sensor may be provided only in either one of the spherical parts 10a and 10b, for example, only in the downstream spherical part 10b. Further, the present invention is not limited to an oxygen sensor, and various gas sensors may be provided on at least one of the spherical portions 10a and 10b.

The manufacturing process of the passage member 10 will be further explained based on FIG. 7.

First, in the first step (step S701), the first divided body 12 is prepared. The first divided body 12 has the above configuration. Further, the second divided body 14 is prepared. The second divided body 14 has the above configuration.

Then, in the second step (step S703), with the second dividing surface 14f in contact with the first dividing surface 12f, the first protrusion 12r of the first divided body 12 and the second divided Welding to the second protrusion 14r of the body 14 is performed. As a result, the passage member 10 is manufactured, in which the passage part 10c and the spherical parts 10a and 10b for connecting pipes, which are continuous with the passage part 10c, are formed. In the production of the passage member 10, the above-mentioned purifying member 16 is placed between the first divided body 12 and the second divided body 14 in this second step.

Furthermore, in the third step (step S705), a pipe member, here an exhaust pipe, is connected to the passage member 10 produced in the second step. As mentioned above, the exhaust pipe 20 is connected to the spherical part 10a, and the exhaust pipe 22g is connected to the spherical part 10b. As a result, the passage member 10 to which the exhaust pipes 20 and 22g are connected is manufactured.

According to the passage member 10 having the above structure and the method for manufacturing the same, the following effects are achieved.

The passage member 10 includes a first divided body 12 including a first protruding portion 12d having a first dividing surface 12f, and a second divided body having a second protruding portion 14d having a second dividing surface 14f. It is formed by connecting 14. In connection, the first protruding portion 12d and the second protruding portion 14d are connected by welding with the second dividing surface 14f in contact with the first dividing surface 12f. As a result, the passage member 10 includes a passage portion 10c and tube connection spherical portions 10a and 10b. These spherical portions 10a, 10b allow connection of exhaust pipes 20, 22 from various directions, respectively. Therefore, it is possible to increase the degree of freedom in attaching the passage member 10 of the engine.

Further, the first divided body 12 includes connection recesses 12a and 12b connected to the passage recess 12c, and the second divided body 14 includes connection recesses 14a and 14b connected to the passage recess 14c. By connecting these divided bodies 12 and 14, a passage part 10c with passage recesses 12c and 14c is formed, a spherical body 10a with connection recesses 12a and 14a is formed, and a spherical body 10a with connection recesses 12b and 14b is formed. A spherical body 10b is formed. In this way, the passage portion 10c and the spherical portions 10a, 10b can be easily formed in the passage member 10.

Further, the passage member 10 includes a spherical part 10a, a passage part 10c, and a spherical part 10b in succession, and the spherical parts 10a and 10b are provided on both sides of the passage part 10c. Therefore, the degree of freedom in attaching the passage member 10 can be suitably increased.

Furthermore, the passage member 10 is provided with a purification member 16, which is an exhaust purification catalyst, in the passage portion 10c. In this way, the passage member 10 can be used as a catalytic converter by using the first divided body 12 and the second divided body 14 as a catalyst outer cylinder.

Further, protrusions 12j, 12k, 14j, and 14k are provided for fixing the purifying member 16 to the passage portion 10c. With this configuration, the purifying member 16 can be fixed and positioned using these protrusions. Furthermore, this prevents the purifying member 16 from interfering with the inner wall of the passage member 10, and also prevents the purifying member 16 from being damaged.

Oxygen sensors S1 and S2 are provided in the spherical parts 10a and 10b. In the spherical parts 10a and 10b, the gas can be made uniform by colliding with the inner wall surfaces of the spherical parts 10a and 10b. Therefore, by providing the oxygen sensors S1 and S2 in the spherical parts 10a and 10b, the measurement accuracy of the gas flowing through the passage member 10 can be improved.

An engine equipped with this passage member 10 is mounted on a vehicle, particularly a motorcycle. Motorcycles have various restrictions on the mounting arrangement of various components due to, for example, space issues. As described above, the passage member 10 is formed by welding the first divided body 12 and the second divided body 14, so that the degree of freedom in design such as its shape can be increased. Therefore, the passage member 10 is particularly suitable for motorcycles.

Furthermore, in manufacturing the passage member 10, the spherical parts 10a, 10b are partially cut and the exhaust pipes 20, 22 are connected to them. Since the exhaust pipe is connected to the spherical part in this way, the degree of freedom in the direction of connection of the spherical part, that is, the passage member to the exhaust pipe can be increased. Furthermore, since the spherical parts 10a and 10b connecting the exhaust pipes 20 and 22 are approximately spherical, they can flexibly correspond to the dimensions of the exhaust pipes 20 and 22 to be connected. From this point of view as well, the spherical portions 10a and 10b can contribute to increasing the degree of freedom in attaching the passage member 10.

Furthermore, in manufacturing the passage member 10, the first protrusion 12d and the second protrusion 14d are particularly connected by seam welding. Thereby, the airtightness between the first dividing surface 12f of the first dividing body 12 and the second dividing surface 14f of the second dividing body 14 can be improved.

Next, an engine passage member 110 according to a second embodiment of the present invention will be described based on FIG. 8. In the following description of the engine passage member 110 according to the second embodiment, only the differences in the passage member 110 from the engine passage member 10 according to the first embodiment will be explained.

In the passage member 110, the first divided body 12 and the second divided body 14 are integrally constructed. Specifically, one end edge of the first protruding portion 12d of the first divided body 12 and one end edge of the second protruding portion 14d of the second divided body 14 are continuous at the connecting portion 110a.

When producing the passage member 110, first, an expanded body 110b in which the first divided body 12 and the second divided body 14 shown in FIG. 8 are integrated is prepared. This developed body 110b is prepared by press-molding a steel plate. Preparation of this developed body 110b corresponds to the first step in FIG.

Then, the unfolded body 110b is folded up at the connecting portion 110a as shown by the arrow in FIG. As a result, the first divided surface 12f of the first divided body 12 comes into contact with the second divided surface 14f of the second divided body 14. Then, the first protrusion 12d of the first divided body 12 and the second protrusion 14d of the second divided body 14 are welded (second step in FIG. 7). Then, the exhaust pipe is connected (third step in FIG. 7). In this way, the passage member 110 can be manufactured.

In this way, the engine passage member 110 according to the second embodiment uses a deployable body 110b in which the first divided body 12 and the second divided body 14 are integrated. Since the expanded body 110b can be manufactured by pressing a single metal plate, the passage member 110 can be manufactured more easily.

Note that the engine passage member 110 according to the second embodiment is an exhaust passage member that does not include the purification member 16 described above. However, the passageway member 110 may also include a purification member 16. Furthermore, the passage member 110 may further include the projections 12j, 12k, 14j, and 14k. Note that the shape and number of the protrusions are not limited to the above-mentioned shapes, and for example, a plurality of cylindrical protrusions may be arranged at a distance.

Although the embodiments and modifications thereof according to the present invention have been described above, the present invention is not limited thereto. Various substitutions and changes are possible without departing from the spirit and scope of the invention as defined by the claims of this application.

The passage members 10, 110 have spherical parts on both sides of the passage part. However, the present invention is not limited thereto, and the present invention may include various passage members having one passage part and one spherical part, such as a passage member having only one spherical part continuous to one passage part. can. Further, in the passage members 10 and 110, the first divided body 12 and the second divided body 14 have the same configuration, but may have different configurations.

Further, in the method for manufacturing the passage members 10, 110, after connecting the two divided bodies 12, 14, an exhaust pipe was connected to the spherical parts 10a, 10b. However, the pipe member such as the exhaust pipe may be connected before the two divided bodies 12, 14 are connected. That is, the order of the second step and the third step in FIG. 7 may be reversed. At this time, pipe members can be connected to the hemispherical parts H11, H12, H21, and H22 before becoming the spherical parts 10a and 10b.

Note that the passage member according to the present invention is not limited to being an exhaust passage member, but may be an intake passage member of an engine.

10, 110...passage member, 10a, 10b...spherical part, 10c...passage part
12...first divided body, 14...second divided body
12a, 12b, 14a, 14b...Connection recess, 12c, 14c...Passage recess, 12d, 14d...Protrusion
12f, 14f...Divided surface, 16...Purification member, H11, H12, H21, H22...Semispherical part

Claims (9)

An engine passage member (10, 110),
a first divided body (12) including a first protrusion (12d) having a first divided surface (12f);
a second divided body (14) comprising a second protrusion ( 14 d) having a second divided surface (14f);
The first protrusion (12d) and the second protrusion (14d) are connected with the second split surface (14f) in contact with the first split surface (12f). As a result, a passage portion (10c) and a tube connection spherical portion (10a) continuous with the passage portion are formed ,
An exhaust purification catalyst (16) is provided in the passage section (10c).
An engine passage member (10, 110) characterized by: The first divided body (12) includes a first passage recess (12c) and a first connection recess (12a) connected to the first passage recess,
The second divided body (14) includes a second passage recess (14c) and a second connection recess (14a) connected to the second passage recess,
The passage portion (10c) is formed to include the first passage recess (12c) and the second passage recess (14c),
The passage member for an engine according to claim 1, wherein the spherical portion (10a) is formed to include the first connection recess (12a) and the second connection recess (14a). 10, 110). a third connecting recess (12b) connected to the first passage recess (12c) in the first divided body (12); and a second passage recess (14c) in the second divided body (14). A second spherical part (10b) for pipe connection formed with a fourth connection recess (14b) connected to the passage part (10c) is further provided. The engine passage member (10, 110) according to claim 2. Any one of claims 1 to 3, wherein the passage portion (10c) is provided with protrusions (12j, 12k, 14j, 14k) for fixing the exhaust purification catalyst (16). The passage member (10, 110) of the engine described in paragraph 1 . The engine passage member (10, 110) according to any one of claims 1 to 4, characterized in that the spherical portion is further provided with a gas sensor (S1, S2). A vehicle comprising the engine passage member (10, 110) according to any one of claims 1 to 5 . A method for manufacturing the passage member (10, 110) of the engine according to claim 1, comprising :
The first divided body ( 12) made of metal includes the first protrusion (12d) having the first dividing surface (12f), and the second dividing body (12) having the second dividing surface (14f). a step of preparing the second divided body (14) made of metal and having a protrusion (14d);
The first divided body (12) and the first divided body (12) are arranged to form the passage section (10c) in which the exhaust purification catalyst (16) is provided and the tube connection spherical section (10a) continuous with the passage section. The exhaust purification catalyst (16) is arranged between the second dividing body (14) and the second dividing surface (14f) is in contact with the first dividing surface (12f). A manufacturing method comprising the step of welding the first protrusion (12d) and the second protrusion (14d). The spherical part (10a) includes a first hemispherical part (H11) of the first divided body (12) and a second hemispherical part (H21) of the second divided body (14). ,
A claim further comprising the step of cutting at least one of the first hemispherical part (H11) and the second hemispherical part (H21) to connect the pipe members (20, 22). The manufacturing method according to item 7 . 9. The manufacturing method according to claim 7 , wherein the welding is seam welding.

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