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Connecting structure of segmented exhaust pipes

A connection structure and exhaust pipe technology, applied in the direction of exhaust devices, gas passages, noise reduction devices, etc., can solve the problems of inability to achieve complete sealing, exhaust gas pollution of the atmospheric environment, etc., and achieve excellent elasticity, avoid rupture, and good sealing performance Effect

Inactive Publication Date: 2017-04-26
CHINA FIRST AUTOMOBILE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Segmented exhaust pipes are sealed at the joints of the segments with a metal sealing ring and a ring groove, which cannot achieve complete sealing between pipes with this structure
Leaked exhaust gas will pollute the atmosphere

Method used

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  • Connecting structure of segmented exhaust pipes

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Experimental program
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Effect test

Embodiment Construction

[0018] The present invention will be further described below in conjunction with specific drawings.

[0019] Such as figure 1 Shown: the spigot type segmented exhaust pipe connection structure, including exhaust pipe Ⅰ1, exhaust pipe Ⅱ2, metal bellows 3, etc.; exhaust pipe Ⅰ1 and exhaust pipe Ⅱ2 adopt a spigot type clearance fit sleeve There is a certain movement gap between the end surface of the exhaust pipe I1 and the end surface of the inner hole of the exhaust pipe II2, and there is a certain movement gap between the end surface of the exhaust pipe II2 and the end surface of the exhaust pipe I1. There is an annular flange at the connecting end of the exhaust pipe I1 and the exhaust pipe II2, and the copper metal bellows pass through the annular flanges of the exhaust pipe I1 and the exhaust pipe II2 and the exhaust pipe I1 and the exhaust pipe respectively. The connection ends of the tube II2 are welded and sealed.

[0020] When the spigot type segmented exhaust pipe co...

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PUM

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Abstract

The invention discloses a connecting structure of segmented exhaust pipes. The connecting structure comprises the first exhaust pipe, the second exhaust pipe and a metal corrugated pipe, wherein the connection end of the first exhaust pipe and the connection end of the second exhaust pipe are connected with each other in sliding and sealed modes through the metal corrugated pipe, and when the metal corrugated pipe completely expands, a movable gap is reserved between the connection end of the first exhaust pipe and the connection end of the second exhaust pipe. The metal corrugated pipe can compensate for deformation of the exhaust pipes caused by heating.

Description

technical field [0001] The invention belongs to the technical field of engines, and in particular relates to a connection structure for segmented exhaust pipes of an engine. Background technique [0002] With the strengthening of engines and technology upgrades, the exhaust temperature, braking power and exhaust back pressure of commercial vehicle engines continue to increase, and the sealing performance of engine exhaust systems is facing the challenge of high temperature and high pressure. The integral exhaust pipe is affected by the high temperature of the engine exhaust, resulting in large thermal stress and thermal deformation, and the exhaust pipe is easy to crack. At present, all engine manufacturers use segmented exhaust pipes to reduce the thermal stress and thermal deformation of the exhaust pipes. [0003] Segmented exhaust pipes are sealed at the joints of the segments with metal sealing rings and ring grooves. This type of structure cannot achieve complete seal...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01N13/08
CPCF01N13/082F01N2450/20F01N2470/12
Inventor 王一江杨振国孙瑞董佳
Owner CHINA FIRST AUTOMOBILE