CN218934543U - Multi-part tightly-coupled integrated post-processing device and vehicle - Google Patents

Abstract

The utility model aims to provide a multi-part tightly-coupled integrated aftertreatment device and a vehicle, which can tightly couple and integrate a plurality of parts for exhaust gas aftertreatment, reduce the types of the parts, reduce the cost, improve the assembly efficiency, improve the ignition temperature, reduce the air leakage risk and ensure the exhaust gas to be sufficiently purified. The post-processing device comprises: an intake flange and an exhaust flange; a plurality of exhaust manifolds matched with a plurality of air passage outlets of the engine through an air inlet flange; a housing assembly having an inlet end cone at one end for assembly with each exhaust manifold and an outlet end cone at the other end for assembly with an outlet flange, and having a three-way catalyst carrier and a particulate collector carrier disposed therein; the exhaust gas of the engine is led into the shell component through each exhaust manifold and the air inlet end cone, purified by the three-way catalyst and the particle trapping agent in the shell component, and discharged into the muffler through the air outlet end cone and the air outlet flange.

Description

Multi-part tightly-coupled integrated post-processing device and vehicle

Technical Field

The utility model relates to the field of exhaust control of vehicle engines, in particular to a multi-part tightly-coupled integrated aftertreatment device and a vehicle.

Background

For naturally aspirated gasoline engines, conventional exhaust gas aftertreatment devices typically refer to the entire exhaust system, except for the muffler, including exhaust manifold 11, fasteners 12, gasket 13, three-way catalyst 14, fasteners 15, gasket 16, particulate trap 17, and the like, see FIG. 1. The existing exhaust gas aftertreatment device has the advantages of more parts, complex structure, large occupied space, low assembly efficiency, difficult disassembly and high cost. And because of cabin space limitation, the positions of the three-way catalyst and the particle catcher are often relatively back and far away from the engine, so that the temperature of noble metal reaction and the temperature of carbon particle combustion are increased for a long time, and the waste gas is insufficiently purified, thereby causing atmospheric pollution. In addition, because the connection pair is more, the requirement on the sealing gasket is higher, the air leakage risk is higher, noise is easy to generate, and even the waste gas is not purified and is directly discharged into the atmosphere, so that the environment is polluted.

Disclosure of Invention

The utility model aims to provide a multi-part tightly-coupled integrated aftertreatment device and a vehicle, which can tightly couple and integrate a plurality of parts for exhaust gas aftertreatment.

The technical scheme of the utility model is as follows:

the utility model provides a multi-part coupling integrated post-processing device, which comprises:

an intake flange and an exhaust flange;

a plurality of exhaust manifolds matched with a plurality of air passage outlets of the engine through an air inlet flange;

a housing assembly having an inlet end cone at one end for assembly with each exhaust manifold and an outlet end cone at the other end for assembly with an outlet flange, and having a three-way catalyst carrier and a particulate collector carrier disposed therein;

the exhaust gas of the engine is led into the shell component through each exhaust manifold and the air inlet end cone, purified by the three-way catalyst and the particle trapping agent in the shell component, and discharged into the muffler through the air outlet end cone and the air outlet flange.

Preferably, the three-way catalyst carrier and the particulate collector carrier are each wrapped via a gasket, and the gasket is disposed against an inner wall of the housing assembly.

Preferably, a predetermined gap is provided between the three-way catalyst carrier and the particulate collector carrier.

Preferably, the shell assembly is welded and fixed with the air inlet end cone and the air outlet end cone.

The utility model also provides a vehicle, which comprises the multi-part coupling integrated post-processing device.

Compared with the prior art, the utility model has the following beneficial effects:

the 4 exhaust manifolds, the three-way catalyst and the particle trapping agent are integrated on one part, so that the number and the variety of the parts are reduced, the structure of the device is simpler than that of the prior art, the development cost is low, and the use cost is low; in addition, sealing gaskets and related fasteners in a conventional exhaust gas aftertreatment system are omitted, the number of connecting pairs is reduced, and the risk of air leakage is reduced; and the gap between the exhaust manifold and the three-way catalyst and the particle trapping agent is shortened, which is favorable for the rapid rise of the ignition temperature, so that the exhaust gas is sufficiently purified, and the atmospheric pollution is reduced.

Drawings

FIG. 1 is a schematic diagram of a prior art exhaust aftertreatment system;

FIG. 2 is a schematic diagram of an aftertreatment device, according to an embodiment of the present disclosure;

FIG. 3 is a cross-sectional view of an aftertreatment device of an embodiment of the present disclosure;

in the figure, 21-inlet flange, 22-exhaust manifold, 23-inlet end cone, 24-outlet end cone, 25-outlet flange, 26-three-way catalyst support, 27-gasket, 28-housing assembly, 29-particle collector support.

Detailed Description

The present utility model will be described in detail with reference to the accompanying drawings.

Referring to fig. 2 and 3, the present embodiment provides a multi-part tightly coupled integrated aftertreatment device, comprising an inlet flange 21, an exhaust manifold 22, an inlet end cone 23, an outlet end cone 24, an outlet flange 25, a three-way catalyst support 26, a gasket 27, a housing assembly 28, and a particulate collector support 29.

The material of the air inlet flange 21 is Q235, and the surface treatment is blackening treatment, so that the risk of corrosion can be reduced, and the thickness is 8mm. The mounting holes on the intake flange 21 are adjusted according to the engine head structure, and there are 6 mounting holes.

The exhaust manifold 22 is made of stainless steel SUS441, and is made of seamless steel pipe with the wall thickness of 1.5mm, and 4 exhaust manifolds 22 are converged together in 4 different directions corresponding to 4 air passage outlets of the engine, namely, are distributed according to a 4-1 structure. One end of each exhaust manifold 22 is welded to the intake flange 21 and one end is welded to the intake cone 23.

The intake cone 23 is formed by punching and then welding, and is made of stainless steel SUS441 with a wall thickness of 2mm, one end of which is welded to 4 exhaust manifolds, and one end of which is welded to the housing assembly 28.

The gas outlet end cone 24 is formed by stamping and then welding, and is made of stainless steel SUS441, the wall thickness of the gas outlet end cone is 2mm, one end of the gas outlet end cone is welded on the shell assembly 28, and the other end of the gas outlet end cone is welded on the gas outlet flange 25.

The gas outlet flange 25 is formed by stamping and is made of stainless steel SUH409L, the wall thickness is 3mm, and the gas outlet flange is welded on the gas outlet end cone 24.

The three-way catalyst support 26 is honeycomb in structure, is made of a cordierite ceramic support, is wrapped by a gasket 27, and is plugged into a housing assembly 28.

The particle collector carrier 29 is honeycomb-shaped, is made of cordierite ceramic, is wrapped by a gasket 27, and is inserted into the housing assembly 28.

The thickness of the pad 27 after compression is 3.5mm, the material is polycrystalline fiber, one surface of the pad 27 wraps the three-way catalyst carrier 26 or the particle trapping agent carrier 29, and the other surface is clung to the inner wall of the shell assembly 28, so that the effects of heat insulation, heat preservation, vibration reduction and fixation are achieved.

The housing assembly 28 is a main structure of an embodiment of the present utility model, and is made of stainless steel SUS441 with a wall thickness of 1.5mm, and encapsulates the three-way catalyst carrier 26 and the particle collector carrier 29 inside. One end of the shell assembly 28 is welded with the air inlet end cone 23, and the other end is welded with the air outlet end cone 24, so that the whole part has the functions of an exhaust manifold, a three-way catalyst and a particle catcher.

When the exhaust gas of the engine enters the aftertreatment device of the embodiment of the utility model from the air inlet flange 21, after passing through the exhaust manifold 22 and the air inlet end cone 23, the exhaust gas is purified by the three-way catalyst and the particle trapping agent in the shell assembly 28, then passes through the air outlet end cone 24, is discharged into the muffler from the air outlet flange 25, and finally enters the atmosphere.

The 4 exhaust manifolds 22, the three-way catalyst and the particle trapping agent are integrated on one part, so that the number and the types of the parts are reduced, the structure is simple, the development cost is low, and the use cost is low; the sealing gasket and related fasteners in the conventional exhaust gas aftertreatment system are omitted, the number of connecting pairs is reduced, and the air leakage risk is reduced; the gap between the exhaust manifold 22 and the three-way catalyst and the particulate trapping agent is shortened, which is favorable for the rapid rise of the light-off temperature, so that the exhaust gas is sufficiently purified, and the atmospheric pollution is reduced.

The utility model relates to a multi-part tightly-coupled integrated post-processing device and a vehicle.

The foregoing description of the preferred embodiments of the present application is not intended to be limiting, but is intended to cover any and all modifications, equivalents, and alternatives falling within the spirit and principles of the present application.

Claims (5)

1. A multi-part coupling integrated aftertreatment device, comprising:

an intake flange (21) and an exhaust flange (25);

a plurality of exhaust manifolds (22) matched with a plurality of air passage outlets of the engine through an air inlet flange (21);

a housing assembly (28) having an inlet end cone (23) for assembly with each exhaust manifold (22) at one end and an outlet end cone (24) for assembly with an outlet flange (25) at the other end, and a three-way catalyst carrier (26) and a particulate collector carrier (29) being mounted within the housing assembly (28);

engine exhaust gas is led into the shell assembly (28) through each exhaust manifold (22) and the air inlet end cone (23), purified by the three-way catalyst and the particle trapping agent in the shell assembly (28), and discharged into the muffler through the air outlet end cone (24) and the air outlet flange (25).

2. The multi-part coupling integrated aftertreatment device of claim 1, wherein the three-way catalyst support (26) and the particulate collector support (29) are each wrapped via a gasket (27), and the gasket (27) is disposed against an inner wall of a housing assembly (28).

3. The multi-part coupling integrated aftertreatment device of claim 1, wherein the three-way catalyst support (26) and the particulate collector support (29) have a predetermined gap therebetween.

4. The multi-part coupling integrated aftertreatment device of claim 1, wherein the housing assembly is welded to both the inlet end cone (23) and the outlet end cone (25).

5. A vehicle comprising a multi-part coupling integrated aftertreatment device of any one of claims 1 to 4.

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