JPH04103221U - manifold converter - Google Patents

Abstract

(57) [Summary] [Purpose] The present invention relates to a manifold converter that is placed adjacent to the exhaust manifold of an automobile engine to purify exhaust gas. The purpose is to significantly reduce the risk of scattering compared to conventional methods. [Structure] The cylindrical container 39 and the catalyst carrier 41 are formed in the shape of a beer barrel with a circular cross section. Interam mat 49 that blocks gas flow
The catalyst carrier 4 is placed in the gap 47 on both sides of this central part.
A supporter 51 is arranged to restrict the movement of 1 in the radial direction,
Furthermore, cushioning materials 53 are arranged at both ends to restrict movement of the catalyst carrier 41 in the axial direction.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

This invention is installed next to the exhaust manifold of an automobile engine to purify exhaust gas. Regarding manifold converters arranged for

0002

[Conventional technology]

In general, in the exhaust system of automobiles, in order to purify exhaust gas, for example, A catalytic converter as disclosed in Japanese Patent No. 148011 is arranged. Figures 3 and 4 show examples of this type of catalytic converter, such as the exhaust gas of an automobile engine. This shows an example of a manifold converter placed adjacent to a manifold. In the figures, reference numeral 11 indicates an exhaust manifold.

0003 This exhaust manifold 11 is a manifold book fixed to the exhaust side of the engine. body 13, a plurality of exhaust pipes 15 connected to this manifold body 13, and the like. and a collection section 17 that collects the exhaust pipes 15 of the exhaust pipes 15. In the figure, reference numeral 19 indicates a cross section that accommodates a catalyst carrier for purifying exhaust gas. An oval-shaped cylindrical container is shown.

0004 This cylindrical container 19 has an exhaust gas inlet 21 and an exhaust gas outlet 23 formed therein. and the exhaust gas inlet 21 is connected to the gathering part 17 of the exhaust manifold 11. There is. In such a manifold converter, the cylindrical container 1 is connected from the exhaust gas inlet 21. The exhaust gas from the engine that has flowed into the chamber 9 is purified by the catalyst carrier inside the cylindrical container 19. After being oxidized, the exhaust gas flows out from the exhaust gas outlet 23 and is led to a muffler (not shown), for example. It is emitted into the atmosphere after being silenced.

[0005]

[Problem that the idea aims to solve]

However, in such a manifold converter, the cylindrical container 19 is Since the cylindrical container 19 is placed adjacent to the air manifold 11, the temperature is extremely high. Also, as shown in FIG. 5, the cylindrical container 19 and the catalyst carrier 25 have a cross section. Since it is formed in an elliptical shape, the cylindrical container 19 is large as shown by the two-dot chain line in FIG. As a result, a large gap W is formed between the cylindrical container 19 and the catalyst carrier 25. The exhaust gas is discharged from the gap W formed between the interlum mat 27 and the cylindrical container 19. The exhaust gas flows in a bypass manner, reducing purification performance, and furthermore, due to the flow of exhaust gas, There was a problem that there was a risk that the interlam mat 27 would scatter.

[0006] The present invention was devised to solve such conventional problems. This greatly reduces the risk of splashing and the risk of scattering of the interlam mat compared to conventional methods. The purpose is to provide a manifold converter that can.

[0007]

[Means to solve the problem]

The manifold converter according to the present invention has an exhaust gas inlet and an exhaust gas flow. An outlet is formed and the exhaust gas inlet is connected to the exhaust pipe collection part of the exhaust manifold. A manifold containing a catalyst carrier for purifying exhaust gas in a cylindrical container. In a cold converter, the cylindrical container and the catalyst carrier are replaced by a via having a circular cross section. It is formed into a barrel shape, and the axial length of the gap formed between the cylindrical container and the catalyst carrier. An interram mat that blocks the flow of exhaust gas is placed in the center of the Supporters for regulating movement of the catalyst carrier in the radial direction are disposed in the gaps on both sides of the catalyst carrier, Furthermore, cushioning materials are placed at both ends to restrict movement of the catalyst carrier in the axial direction. It is something that

[0008]

[Effect]

The manifold converter of this invention transforms a cylindrical container into a beer barrel shape with a circular cross section. This reduces the deformation of the cylindrical container and improves the relationship between the interlum mat and the cylindrical container. The gap formed between them becomes very small.

[0009]

【Example】 Hereinafter, details of the present invention will be described with reference to an embodiment shown in the drawings. Figures 1 and 2 show an embodiment of the manifold converter of the present invention. , In FIG. 2, reference numeral 31 indicates an exhaust manifold. This exhaust manifold 31 is a manifold main body fixed to the exhaust side of the engine. body 33, a plurality of exhaust pipes 35 connected to this manifold body 33, and the like. and a collection section 37 that collects the exhaust pipes 35 of the exhaust pipes 35.

0010 In FIG. 1, reference numeral 39 houses a catalyst carrier 41 for purifying exhaust gas. A cylindrical container with an elliptical cross section is shown. This cylindrical container 39 has an exhaust gas inlet 43 and an exhaust gas outlet 45 formed therein. and the exhaust gas inlet 43 is connected to the gathering part 37 of the exhaust manifold 31. There is.

[0011] Therefore, in this embodiment, the cylindrical container 39 and the catalyst carrier 41 have a circular cross section. It is shaped like a beer barrel. In the axial direction of the gap 47 formed between the cylindrical container 39 and the catalyst carrier 41, An interram mat 49 is placed in the center to block the flow of exhaust gas. .

0012 The gaps 47 on both sides of the central portion are provided to restrict movement of the catalyst carrier 41 in the radial direction. , a substantially truncated conical supporter 51 is arranged. In the gap 47 at both ends of the supporter 51, there is a gap 47 that allows movement of the catalyst carrier 41 in the axial direction. A buffer material 53 is arranged to regulate the This buffer material 53 has an inner flange portion 55 that comes into contact with the end surface of the catalyst carrier 41. ing.

[0013] In this embodiment, the catalyst carrier 41 includes, for example, a metal corrugated plate and a flat plate. A multi-wound metal catalyst carrier is used, and the outer peripheral surface is formed into a spherical shape. has been done. Further, the cylindrical container 39 is divided into two parts and joined in the middle. In the manifold converter configured as described above, the exhaust gas inlet 43 The exhaust gas from the engine that has flowed into the cylindrical container 39 is After being purified by the carrier 41, it flows out from the exhaust gas outlet 45, for example, as shown in the figure. After being guided to a silencer and silenced, it is discharged into the atmosphere.

[0014] However, in the manifold converter configured as above, the cylindrical container 3 9 and the catalyst carrier 41 are formed into a beer barrel shape with a circular cross section, and a cylindrical container. 39 and the catalyst carrier 41 at the center in the axial direction of the gap 47. An interlam mat 49 is arranged to prevent the flow of A supporter 51 is arranged to restrict movement of the catalyst carrier 41 in the radial direction, and further, Buffer materials 53 are arranged at both ends to restrict movement of the catalyst carrier 41 in the axial direction. Conventionally, the risk of exhaust gas bypass and the risk of scattering of the interram mat 49 has been reduced. This can be significantly reduced.

[0015] That is, in the manifold converter configured as above, the cylindrical container 3 9 is formed in the shape of a beer barrel with a circular cross section, so that thermal deformation of the cylindrical container 39 is reduced. and a gap formed between the interlam mat 49 and the cylindrical container 39 due to thermal deformation. becomes very small, and due to thermal deformation, the interlum mat 49 and the cylindrical container 39 There is almost no bypass of exhaust gas from the gap formed between the In addition, the flow of exhaust gas can improve the performance of the interram mat 49. It is also possible to eliminate the risk of scattering.

[0016] In addition, in the manifold converter configured as above, the catalyst carrier 41 is Since the outer circumferential surface is formed into a spherical shape, the catalyst carrier 41 has a spherical outer circumferential surface. Since the inflow part 57 of the exhaust gas into the body 41 is from the center, the exhaust gas flows from the upper cushioning material 55. Even when exhaust gas flows out to the supporter 51 side, the exhaust gas flows from the inflow part 57 to the catalyst. This will flow into the carrier 41, making it possible to reliably purify the exhaust gas.

[0017] Note that in the embodiments described above, a metal catalyst carrier is used as the catalyst carrier 41. Although the present invention is not limited to such embodiments, for example, Of course, a catalyst carrier made of ramix may also be used.

[0018]

[Effect of the idea]

As described above, the manifold converter of the present invention uses a cylindrical container and a contact The medium carrier is formed into a beer barrel shape with a circular cross section, and the cylindrical container and the catalyst carrier are An interram that prevents the flow of exhaust gas is located at the center of the gap formed between the two in the axial direction. A mat is placed in the gap on both sides of this central part to restrict the movement of the catalyst carrier in the radial direction. Supporters are placed at both ends to restrict the movement of the catalyst carrier in the axial direction. Since the cushioning material has been placed, there is no risk of exhaust gas bypass and interum mat. This has the advantage that the risk of scattering can be significantly reduced compared to the conventional method.

[Brief explanation of drawings]

FIG. 1 is a longitudinal sectional view showing an embodiment of a manifold converter of the present invention.

FIG. 2 is a side view showing the manifold converter of FIG. 1 connected to an exhaust manifold.

FIG. 3 is a front view showing a conventional manifold converter.

FIG. 4 is a side view of the manifold converter of FIG. 3;

5 is a sectional view taken along line V-V in FIG. 4. FIG.

[Explanation of symbols]

31 Exhaust manifold 35 Exhaust pipe 37 Gathering area 39 Cylindrical container 41 Catalyst carrier 43 Exhaust gas inlet 45 Exhaust gas outlet 47 Gap 49 Interam mat 51 Supporter 53 Cushioning material

Claims (1)

[Scope of utility model registration request] Claim 1: An exhaust gas inlet (43) and an exhaust gas outlet (45) are formed, and the exhaust gas inlet (43)
A manifold in which a catalyst carrier (41) for purifying exhaust gas is housed in a cylindrical container (39) connected to a gathering part (37) of exhaust pipes (35) of an exhaust manifold (31). In the converter, the cylindrical container (39)
and the catalyst carrier (41) are formed into a beer barrel shape with a circular cross section, and the cylindrical container (39) and the catalyst carrier (41)
In the central part in the axial direction of the gap (47) formed between the
An interram mat (49) for blocking the flow of exhaust gas is arranged, and the catalyst carrier (49) is placed in the gap on both sides of the central part.
A supporter (51) is arranged to restrict the movement of the catalyst carrier (41) in the radial direction, and cushioning materials (53) are further arranged at both ends to restrict the movement of the catalyst carrier (41) in the axial direction. A manifold converter characterized by: