Catalytic converter and method of assembly thereof

A technology for a catalytic converter and an assembly method, applied in the field of catalytic converters and their assembly, can solve the problems of exhaust gas leakage, uneven thickness, membrane deformation and the like

Active Publication Date: 2021-05-04
SAIC MOTOR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, during the assembly process, the film will be locally deformed by the extrusion of the shell, such as being shrunk together, resulting in uneven thickness of the film along the circumference around the carrier, resulting in a gap between the shell and the carrier at a local position, cause exhaust gas leakage

Method used

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  • Catalytic converter and method of assembly thereof
  • Catalytic converter and method of assembly thereof
  • Catalytic converter and method of assembly thereof

Examples

Experimental program
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Effect test

no. 1 example

[0045] This technical solution provides a method for assembling a catalytic converter, referring to figure 1 , the assembly method includes:

[0046] Execute step S1 and combine figure 2 , provide the carrier 1 and the shell 2, and put the carrier 1 into the shell 2, at this time, there is a gap between the carrier 1 and the shell 2;

[0047] Execute step S2 and combine image 3 , fill the gap between the carrier 1 and the shell 2 with a liquid substance, and the liquid substance flows along the arrow C;

[0048] Execute step S3 and combine Figure 4 , hardening the liquid substance to form a solid liner 3 , which is in contact with the shell 2 and the carrier 1 .

[0049] Compared with directly wrapping the film on the outside of the carrier, the liquid substance has good gap filling properties, and can form a good bond with the surface of the carrier 1 and the shell 2 to a certain extent, and the liquid substance can cover the surface of the carrier 1 and the shell 2, ...

no. 2 example

[0065] In this technical solution, the method for filling the liquid substance in the gap between the carrier and the shell may include:

[0066] refer to Figure 6 , providing a soft bag 6, the soft bag 6 has a solution inlet 6a;

[0067] refer to Figure 7 , before loading the carrier 10 into the shell 20, put the carrier 1 into the soft bag 6;

[0068] Put the soft bag 6 with the carrier 10 into the casing 20, the casing 20 has openings at both ends along the depth direction, and the solution inlet 6a can protrude from one end of the casing 20;

[0069] Inject a liquid substance into the soft bag 6 from the solution inlet 6a, so that the soft bag 6 expands outward to contact and seal with the shell 20 along the circumferential direction of the carrier 10;

[0070] refer to Figure 8 , heating in the process of hardening treatment, soft bag 6 (refer to Figure 7 ) is melted by heat and blended into the solid liner 30.

[0071] refer to Figure 7 , during the process o...

no. 3 example

[0080] Different from the first embodiment and the second embodiment, refer to Figure 9 , in this technical solution, the liner 300 is a thread wound helically on the surface of the carrier 100 . During the assembly process, the wire is wound along the outer surface of the carrier 100 to form the liner 300; after that, the carrier 100 can be rotated around the helical axis of the liner 300, so that the friction force between the wire and the inner wall of the housing 200 is along the line. The distribution of the helical direction, which can well avoid the circumferential wrinkling of the wire during the assembly process, resulting in gaps.

[0081] Therefore, different from wrapping the entire layer of film on the carrier 100 in the prior art, the liner 300 in this technical solution is spirally wound, which can more effectively solve the problem of the gap formed between the carrier 100 and the casing 200 .

[0082] The thread may be a high temperature resistant material s...

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Abstract

A catalytic converter and an assembly method thereof, the catalytic converter includes a casing and a carrier; wherein, the assembling method includes: loading the carrier into the casing; Filling with a liquid substance; hardening the liquid substance to form a solid liner, the solid liner is in contact with the shell and the carrier. The method for assembling the catalytic converter of the technical solution can effectively eliminate the gap between the shell and the carrier in the catalytic converter.

Description

technical field [0001] The invention relates to the technical field of automobiles, in particular to a catalytic converter and an assembly method thereof. Background technique [0002] Catalytic converters, also known as catalytic converters (catalytic converters), catalytic converters, are installed in automobile exhaust emission systems and use catalysts to convert CO, HC and NO in the exhaust x An exhaust purification device that converts gases that are harmless to the human body, also known as a catalytic converter. [0003] A general catalytic converter includes: a shell and a carrier located in the shell. The carrier is generally made of honeycomb ceramic material, and a few of them are made of metal (stainless steel) material. A very loose active layer is coated on the wall of the carrier channel, that is, a catalyst coating, and precious metals as active materials are scattered on the surface of the coating. The precious metals are used as catalysts to convert harmf...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F01N3/28
CPCF01N3/2842F01N3/2853F01N2450/00
Inventor 杨威刘旻叶敬安沈小荣
Owner SAIC MOTOR
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