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Exhaust pipeline sealing structure

A technology of exhaust pipeline and sealing structure, applied in the direction of exhaust device, muffler device, engine components, etc., can solve the problems of easy falling of the gasket, inconvenient installation, failure of the outer sealing surface, etc. The effect of installation

Pending Publication Date: 2020-02-14
DONGFENG COMML VEHICLE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Under the impact of harsh high-temperature and high-pressure airflow, the brass gasket is easily deformed and shrinks toward the center, resulting in failure of the outer sealing surface and air leakage
Moreover, the contraction of the brass gasket to the center will cause a sharp increase in exhaust resistance and increase fuel consumption
Moreover, the existing sealing structure is easy to drop the gasket during assembly, causing inconvenience in installation

Method used

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Embodiment Construction

[0020] Below in conjunction with accompanying drawing and specific embodiment the present invention will be described in further detail:

[0021] Such as figure 1 The exhaust pipeline sealing structure shown includes a front exhaust pipeline 1 and a rear exhaust pipeline 2, a gasket 3 is arranged between the front exhaust pipeline 1 and the rear exhaust pipeline 2, The front exhaust pipeline 1 and the rear exhaust pipeline 2 are provided with a connecting clamp 4, and the connecting clamp 4 is arranged on the outer circumference of the front exhaust pipeline 1 and the rear exhaust pipeline 2, and the rear The exhaust pipe 2 is provided with a gasket boss 5 , and the gasket 3 is in close contact with the gasket boss 5 . The gasket boss 5 is arranged in the direction of the front exhaust pipeline 1 , and the gasket boss 5 is in close contact with the front exhaust pipeline 1 . The gasket boss 5 is arranged on the inner periphery of the rear exhaust pipeline 2 , and the inner ...

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PUM

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Abstract

The invention discloses an exhaust pipeline sealing structure. The exhaust pipeline sealing structure comprises a front exhaust pipeline and a back exhaust pipeline, wherein a gasket is arranged between the front exhaust pipeline and the back exhaust pipeline, connecting hoops are arranged on the front exhaust pipeline and the back exhaust pipeline, the connecting hoops are arranged on the periphery of the front exhaust pipeline and the back exhaust pipeline, a gasket boss is arranged on the back exhaust pipeline, and the gasket is abutted with the gasket boss. The exhaust pipeline sealing structure has the advantages that the gasket does not make direct contact with bad high-temperature and high-pressure exhaust gas, so that the gasket is reliable, radial deformation is not generated, theconditions of resistance increase and fuel consumption increase cannot be caused, and additionally, the boss is arranged, so that the gasket is difficult to fall and is convenient to install.

Description

technical field [0001] The invention relates to the technical field of engine exhaust systems, in particular to an exhaust pipeline sealing structure. Background technique [0002] At present, when the car is running, the exhaust passage is filled with high-temperature and high-pressure engine exhaust gas, especially when the exhaust brake valve is active, the pressure in the exhaust passage is as high as 450Kpa, and the brass gasket is in direct contact with the exhaust gas. [0003] See figure 2 , the connection ports of the front exhaust pipeline and the rear exhaust pipeline adopt a tapered surface structure, and the axial force is generated by the tightening force of the clamp to compress the gasket between the two pipelines. At present, the gasket is mostly made of brass gasket, and its material It is soft and can form a good seal through the small axial deformation obtained by compression to achieve the sealing effect. The sealing gasket is arranged in the air flow ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01N13/18
CPCF01N13/1827
Inventor 陆德福周涛李岖喻超
Owner DONGFENG COMML VEHICLE CO LTD
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