KR101152347B1 - Exhaust line element - Google Patents

Abstract

The present invention relates to an element of an exhaust line 1 of a motor vehicle internal combustion engine. The exhaust line 1 comprises a muffler 2 comprising a housing 3 defined by an edge casing 4, an input pipe 8 connected to the internal combustion engine in an exhaust gas outlet direction and an output pipe to the atmosphere ( 9). The pipes 8, 9 are inserted into the housing 3 of the muffler 2. The elements of the exhaust line 1 of the present invention comprise deformation or rupture forming means 10 which define a desired deformation or rupture area when an impact is applied.

Internal combustion engines, exhaust lines, mufflers, deformation or burst forming means

Description

Exhaust Line Element {EXHAUST LINE ELEMENT}

The present invention relates to an exhaust line element of a motor vehicle internal combustion engine.

TECHNICAL FIELD The present invention relates to the field of the automotive industry, and more particularly, to the field of manufacturing equipment for discharging gas generated from combustion of fuel in an internal combustion engine. will be.

In order to reduce noise, the exhaust equipment mounted on the internal combustion engine is usually composed of an exhaust line comprising at least one muffler, which appears in the form of a rigid housing defined by an edge casing. Inside this muffler there is one input pipe connected to the internal combustion engine and one output pipe to the atmosphere in the direction of the exhaust gas exhaust.

The input pipe and the output pipe are formed of a rigid material and are typically connected to the housing by welding or crimping. Thus, this type of exhaust line constitutes a very rigid unit. Due to this feature, when the vehicle equipped with the exhaust line is impacted in the rear part, especially when the vehicle is impacted by a collision of another vehicle, the impact is transmitted along the exhaust line and is adjacent to the exhaust line. Vehicle components (chassis, fuel tanks and / or engines) are severely damaged.

The present invention seeks to ameliorate the disadvantages exhibited in the exhaust line according to the prior art.

To this end, the present invention includes a muffler having a housing defined by an edge casing, an input pipe connected to the internal combustion engine in an exhaust gas outflow direction, and an output pipe to the atmosphere, the pipes passing into the interior of the muffler housing. In an element of an exhaust line of a motor vehicle internal combustion engine, the exhaust line element is characterized in that it comprises deformation or rupture action means which define a desired deformation or rupture area when an impact is applied.

According to one other feature of the invention, the deformation or rupture action means is provided at the edge casing portion of the muffler housing.

According to another feature of the invention, the deformation or rupture action means are provided at the input pipe and / or output pipe part, inside and / or outside the muffler housing.

According to another additional feature of the invention, the housing comprises a single cup internally, which is connected to the input pipe and the edge casing to define the front part and the rear part of the housing. Deformation or rupture action means are also provided at the edge casing portion and the input pipe portion of the housing front part of the muffler.

According to another additional feature of the invention, the housing comprises an internally one keg, which is connected to the output pipe and the edge casing to define the front part and the back part of the housing. Deformation or rupture action means are also provided at the edge casing portion and output pipe portion of the housing rear part of the muffler.

In fact, the deforming or bursting actuation means can be formed by deforming a portion of the wall of the exhaust line element.

The deformation of the wall is made by making the wall convex, wave or toothed or similar. It can also be formed by folding the wall.

The deformable or rupture acting means may also be configured through a weak area formed in the wall portion of the exhaust line element.

The vulnerable area may be configured via connecting means of at least one longitudinal protrusion, a narrow wall portion, the engagement of two parts of the exhaust line element, or an overlap portion comprising a foil defining the exhaust line element. have.

Vulnerable areas may also be formed in the input pipe and / or output pipe areas and may be thinner pipe portions, less rigid properties placed between two rigid portions of the pipe, portions of reduced thickness of such pipes, or It may be constructed through holes defined at such pipe sections.

According to another additional feature of the invention, the deformation or rupture acting means is provided at the outer wall portion of the double wall, which is comprised of a simple wall portion or an edge casing of the muffler housing.

According to another feature, the deformation or rupture acting means is completed through means arranged to ensure the deformation or rupture direction.

According to an advantage of the present invention, the exhaust line is envisioned so that when the motor vehicle is impacted at the rear, the impact can be partially absorbed by the exhaust line element with said deformation or rupture action means. Deformation or disconnection then takes place at the exhaust line element site. As a result, the impact delivered to the vehicle component adjacent to the exhaust line can be reduced or even blocked.

Hereinafter, the present invention will be described in more detail with reference to the following non-limiting examples.

1 shows an embodiment of an exhaust line comprising a plurality of elements according to the invention and having deformation or bursting action means,

2 to 4 are views according to different embodiments, showing in detail a muffler cover which is a site where deformation or bursting means are defined;

5 to 12 are views according to different embodiments, in which deformation or rupture action means are defined, showing in detail (if any, in the form of a sectional view or a perspective view) a pipe included in the exhaust line; Drawing.

The present invention relates to the field of manufacturing equipment for the discharge of gas generated during combustion of fuel in an automobile internal combustion engine.

The invention relates in particular to an exhaust line 1, which is connected to the internal combustion engine and is shown in part in FIG. 1.

This exhaust line 1 comprises a muffler 2 with a housing 3 defined by an edge casing 4.

In this regard, in the case of the first embodiment shown in FIGS. 2 and 3, the edge casing 4 may consist of a simple one wall 5 (particularly defined via an iron plate or similar plate).

However, in the alternative embodiment shown in FIG. 4, the edge casing 4 may consist of a double wall comprising an outer wall 6 and an inner wall 7 defining an inner volume of the housing 3. have. The inner wall 7 preferably represents a smooth surface (adjusted in the direction of the internal volume of the housing 3), since it makes it possible to reduce the noise level of the muffler 2.

The exhaust line 1 comprises an input pipe 8 connected to the internal combustion engine and an output pipe 9 to the atmosphere in the discharge direction of the gas generated from the internal combustion engine.

The input and output pipes 8, 9 pass into the housing 3 of the muffler 2 and are connected to the housing 3 at the edge casing 4 site, in particular by welding or fitting.

The exhaust line 1 according to the invention comprises an element with deformation or bursting action means 10. The deformation or rupture acting means serve to define the desired deformation or rupture acting zone of the element, in particular to define a zone that is deformed or ruptured when subjected to an impact transmitted through the exhaust line 1. do.

In the first embodiment, the deforming or bursting actuation means 10 may be provided only at the edge casing 4 portion of the muffler 2 housing 3.

This embodiment (not shown) is for example an exhaust line of the type in which the input pipe 8 and the output pipe 9 of the exhaust line are connected only to the edge casing 4 region of the muffler 2 housing 3. Corresponds to 1).

In the second embodiment, the deforming or bursting actuation means 10 may be provided only at the portion of the input pipe 8 and / or the output pipe 9 that the exhaust line 1 comprises.

This embodiment (not shown) allows for example the input pipe 8 and / or output pipe 9 of the exhaust line to be connected only to the edge casing 4 part of the muffler 2 housing 3 on the one hand and On the other hand corresponds to an exhaust line 1 of the type comprising deformation or rupture acting means 10 outside of the muffler 2 housing 3.

In other embodiments, however, the deforming or bursting means 1 are on the one hand at the input pipe 8 and / or output pipe 9 site, ie inside and / or outside the muffler 2 housing 3. On the other hand, it may be provided at the edge casing (4) portion of the muffler (2) housing (3).

In this regard, one embodiment (not shown) is provided for example with an input pipe 8 and / or an output pipe 8 located outside the housing 3 and in the region of the edge casing 4 of the muffler 2 housing 3. 9) an exhaust line 1 comprising deformation or bursting action means 10 defined at the site.

In another embodiment of the invention, the muffler 2 housing 3 of the exhaust line is connected to the edge casing 4 of the muffler 2 housing 3 by welding or fitting to the front part of the muffler 2. It consists of an exhaust line 1 of the type which houses therein a bin 11 formed to define a 12 and a rear part 13. This is in accordance with the direction in which the gas is discharged from the inside of the muffler (2).

In the first variant, the exhaust line 1 is configured in such a way that the input pipe 8 and the output pipe 9 are mounted inside the muffler 2 housing 3 so that the input pipe 8 and the output pipe 9 can move freely with respect to the bin 11. Can be. In this case, the deformable or rupture acting means 10 may be provided at the input casing 8 and / or at the output pipe 8 and / or at the outside of the housing 3 and the edge casing 4 portion of the muffler 2 housing 3. 9) is provided at the site.

Alternatively, in the second variant, the bin 11 can be connected to the input pipe 8 and the edge casing 4. In this case, the deforming or rupturing action means 10 may be provided in the upper part 12 of the muffler 2 housing 3. That is, it may be provided at the edge casing 4 part of the housing 3 and the input pipe 8 part, in particular at the internal part part of the input pipe 8 housing 3.

In a third variant, the bin 11 can be connected to the output pipe 9 and the edge casing 4. In this case, the deformable or rupture acting means 10 may be provided in the rear part 13 of the muffler 2 housing 3. That is, it can be provided at the edge casing 4 portion of the housing 3 and the portion of the output pipe 9, in particular at the portion of the interior of the housing 3 of the output pipe 9.

Finally, as shown in FIG. 1, the bin 11 is preferably connected to the edge casing 4 of the housing 3 on the one hand and to the input pipe 8 and the output pipe 9 on the other hand. . In this case, the deforming or bursting actuation means 10 are provided in the front part 12 and the rear part 13 of the muffler 2 housing 3. That is, it can be provided at the edge casing 4 part of the housing 3 and at the part of the input pipe 8 and the output pipe 9, in particular at the part of the inner part of the housing 8 of the pipes 8, 9.

In addition, as an additional method, as shown in FIG. 1, deformation or rupture action means 10 may be provided on the outer part portion of the input pipe 8 and / or output pipe 9 housing 3.

According to the first embodiment, the deforming or bursting action means 10 are formed through the deformation of one part of the wall of the element of the exhaust line 1.

In this regard, the deformable portion 14 of the wall is formed by making the wall convex (FIG. 2), wave or toothed (FIGS. 3 and 4) or similar.

This deformation 14 can be formed in the wall portion of the pipe (input 8 and / or output 9), as well as in the muffler 2 housing 3 as shown in FIGS. 2 to 4. It may be realized at the edge casing 4 part. As such, as can be seen in FIGS. 2 and 3, this deformation 14 can be realized not only in the region of a simple wall 5 of the edge casing 4, but also in the inner wall 7 of the edge casing 4. ) And / or in the outer wall 6 region (preferably only in the outer wall 6 region, as shown in FIG. 4).

In addition, the deformation part 14 of the wall is in a folded form 17 of the wall of the pipes 8, 9 and / or the wall of the casing 4 (inner wall 7 and / or outer wall 6). It may be formed (see FIG. 11).

According to the second embodiment, the deformable or rupture acting means 10 are vulnerable regions 18 formed in the wall part of the exhaust line 1 element (edge casing 4 and / or pipe 8, 9). It may be configured as.

The first embodiment (not shown) relates to a vulnerable area which is constructed through at least one end projection, for example formed in the wall part (especially the inner side part of the exhaust line 1 element) via a laser cutting method. .

In the case of the second embodiment, the exhaust line 1 element (edge casing 4 and / or pipe 8, 9 shown in FIGS. 5 and 6) with deformation or bursting actuation means 10 is rounded up. Of one film 19 to be provided with a sheathing part 20 which has a shape (FIG. 5) or a spiral shape (FIG. 6) and which is connected via a connecting means 21 constituting the vulnerable region 18. It is formed through deformation.

For this purpose, the connecting means 21 are preferably arranged to realize a discontinuous connection of the cladding part 20, in particular a connection in a gradual or regional manner. In fact, the connecting means 21 can be realized through welding (particularly in an increasingly connected manner) or through fitting and similar methods.

In another embodiment, the vulnerable region 18 is constructed through a wall part 22 of reduced thickness (edge casing 4 and / or pipes 8, 9 shown in FIG. 7).

In yet another embodiment, the exhaust line 1 element (edge casing 4 and / or pipe 8, 9 shown in FIG. 8) with deformation or bursting actuation means 10 is provided in one part ( 23 is constituted by two parts 23 and 23 'which mesh with another part 23' (preferably waterproof). In this case, the vulnerable region 18 of the deforming or bursting acting means 10 is configured through the above engagement operation. As a result, the vulnerable region 18 can be formed at the input pipe 8 and / or output pipe 9 site, as well as at the edge casing 4 site of the muffler 2 housing 3, in particular the casing ( It may also be formed in the simple wall 5 part, the inner wall 7 and / or the outer wall 6 part (preferably only in the outer wall 6 part) of 4).

In the following, reference is made to deformation or rupture acting means 10, which are configured in particular through a fragile region 18 formed at the site of an exhaust line 1 element consisting of an input pipe 8 and / or an output pipe 9. Will be.

In the first embodiment, the pipes 8, 9 are in some cases configured via the same pipe (FIG. 7) or two part pipes with different thicknesses with end to end connections. In this case, the fragile region 18 is constructed through the pipe part 22 of the smallest thickness.

In another embodiment, shown in FIG. 9, the pipes 8, 9 are constructed through two parts of a pipe formed of a rigid material, with reduced rigidity forming the fragile area 18 between the two parts. In particular, an element 24 is inserted which exhibits very weak resistance to bending and further rupture.

In another embodiment, the area of weakness 18 defined at the input pipe 8 and / or output pipe 9 site is a reduced cross-sectional part 25 of the pipe 8, 9 (FIG. 10). Configured through.

As can be seen in FIG. 1, the muffler 2 can be configured such that the input pipe 8 communicates with the housing 3 by means of holes 27. The exhaust gas then exits the input pipe 8 through the holes and enters the housing 3.

The muffler 2 can also be configured such that the output pipe 9 communicates with the housing 3 by holes 27 ′. The exhaust gas then enters the output pipe 8 through the holes.

Therefore, the fragile region 18 forming the deformation or rupture acting means 10 is configured through one part 26 of the input pipe 8 and / or the output pipe 9. The part 26 is located inside the muffler 2 housing 3 and has such holes 27 and 27 '.

All other deformed or rupture acting means 10 described above may be provided inside and / or outside of the housing 3, while the holes 27, 27 ′ are in the muffler 2 housing 3. It should be located only in the interior of the, and consequently in combination with the means 10 formed in the area of the edge casing 4.

According to another feature of the invention, the holes 27, 27 ′ are divided according to different dense regions of the holes 27, 27 ′ at the input pipe 8 and / or output pipe 9 site. . With this embodiment, the location of the deformation or rupture caused in the pipe 8, 9 is determined when an impact occurs.

According to another feature of the invention shown in FIG. 12, the input pipe 8 and / or the output pipe 9 extend along an axis, while the holes 27, 27 ′ are formed in the pipes 8, 9. It is arranged at the pipe 8, 9 part to form an angle with the axis.

Finally, according to another feature of the invention, the elements 4, 8, 9 of the exhaust line 1 with deformation or rupture action means 10 can ensure the direction of deformation or rupture of the exhaust line 1. It also includes means arranged to be.

These direction guarantee means may in particular be configured through the orientation fitted to the holes 27, 27 ′ relative to the pipe 8, 9 axis.

In the event of an impact, the presence of the direction assurance means causes the exhaust line 1 to collide with and / or cause damage to the main engine or elements of the vehicle (fuel tanks, brakes, connecting rubber tubes, etc.) Can be prevented.

Claims (21)

A muffler (2) having a housing (3) defined by an edge casing (4), an input pipe (8) connected to the internal combustion engine in an exhaust gas outflow direction, and an output pipe (9) through the atmosphere, In the element of the exhaust line 1 of the internal combustion engine of the motor vehicle, the pipes 8, 9 run into the interior of the muffler 2 housing 3. The exhaust line 1 element comprises deformation or rupture action means 10 which define a deformation or rupture zone when an impact is applied, The housing 3 of the exhaust line element is internally connected to the input pipe 8 and the edge casing 4 to define a bin 11 defining the front part 12 and the rear part 13 of the housing 3. The deformable or rupture acting means 10 comprise the edge casing 4 part of the front part 12 of the housing 3 and the input pipe 8 of the front part 12 of the housing 3. ) Is provided at the site, The housing 3 of the exhaust line element is internally connected to the output pipe 9 and the edge casing 4 to define a bin 11 defining the front part 12 and the rear part 13 of the housing 3. Wherein the deformable or rupture acting means 10 are at the edge casing 4 part of the rear part 13 of the housing 3 and the output pipe 9 of the rear part 13 of the housing 3. An exhaust line element, characterized in that it is provided at). delete The method of claim 1, The deforming or bursting means 10 are connected to the input pipe 8 and output pipe 9 in and out of the muffler 2 housing 3. An exhaust line element, characterized in that provided. delete delete The method of claim 1, The exhaust line element, characterized in that the deforming or bursting actuating means (10) are formed through a deformable portion (14) which deforms at least one part of the wall of the exhaust line element (1). The method of claim 6, Exhaust line element according to claim 1, characterized in that the deformable portion (14) is formed by making the wall convex, wave or serrated or similar. The method of claim 6, The exhaust line element according to claim 1, characterized in that the deformable portion (14) is formed by folding the wall into a shape (17). The method of claim 1, The exhaust line element, characterized in that the deforming or bursting actuation means (10) are configured through a weak area (18) provided in the wall portion of the exhaust line element (1). 10. The method of claim 9, The exhaust line element is constituted by at least one longitudinal protrusion in a spiral form and is formed in the wall portion of the exhaust line element via a laser beam. 10. The method of claim 9, The exhaust line element 1 with said deformable or rupture acting means 10 has a rounded or spiral form and has a cladding part 20 connected through connecting means 21 constituting the vulnerable region 18. Exhaust line element, characterized in that it is formed through the deformation of one film (19) to be represented. The method of claim 11, The exhaust line element, characterized in that the connecting means (21) are arranged to form a tiered or zonal connection as a discontinuous connection of the cladding part (20). 10. The method of claim 9, The exhaust line element according to claim 1, characterized in that the weak area is configured through a wall part 22 having a reduced thickness. 10. The method of claim 9, The exhaust line element 1 with said deforming or bursting means 10 consists of two parts 23, 23 ′ where one part 23 engages the other part 23 ′, The exhaust line element is characterized in that it is constructed through said engagement operation. 10. The method of claim 9, The exhaust line element 1 with the deformable or rupture acting means 10 is defined by an input pipe 8 and an output pipe 9, the pipes 8, 9 being In some cases, it consists of two parts of the pipe having different thicknesses at the same pipe (8,9) site or at the site of two parts of the pipe with end to end, The exhaust line element, characterized in that the fragile zone (18) consists of the weakest thickness part (22) of the pipe. 10. The method of claim 9, The exhaust line element 1 with the deformable or rupture acting means 10 is defined by an input pipe 8 and an output pipe 9, the pipes 8, 9 being formed of two rigid materials. An exhaust line element, characterized in that a part (24) is inserted between the two parts to reduce the rigidity constituting the vulnerable region (18) and thus exhibit a weak resistance to deformation or rupture. 10. The method of claim 9, The exhaust line element 1 with said deforming or bursting means 10 is defined by an input pipe 8 and an output pipe 9, The exhaust line element is characterized in that the weak area is formed through a part 25 with a reduced cross section of the pipe 8, 9. 10. The method of claim 9, The exhaust line element 1 with said deforming or bursting means 10 is defined by an input pipe 8 and an output 9 pipe 9, The vulnerable region 18 is located inside the muffler 2 housing 3 and is configured through one part 26 with holes 27, 27 ′ of the pipes 8, 9. Exhaust line element. The method according to any one of claims 6 to 14, The exhaust line element 1 with said deforming or bursting means 10 comprises an edge of a muffler 2 housing 3 comprising a simple wall 5 with deforming or bursting means 10. Exhaust line element, characterized in that it is formed by a casing (4). The method according to any one of claims 6 to 14, The exhaust line element 1 with the deforming or bursting means 10 comprises an inner wall 7 defining a volume inside the housing and an outer wall 6 with the deforming or bursting means 10. Exhaust line element, characterized in that it is formed by an edge casing (4) of a double wall muffler (2) housing comprising a double wall. The method according to any one of claims 1, 3 and 6 to 18, The strain or rupture acting means (10) is characterized in that the exhaust line element is provided with means arranged to ensure the direction of deformation or rupture.

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