Corrugated pipe for national VI commercial vehicle

Abstract

The invention relates to a corrugated pipe for a national VI commercial vehicle, in particular to the technical field of corrugated pipes. The corrugated pipe comprises a corrugated pipe main body, the two ends of the corrugated pipe main body are provided with straight edge sections, the inner wall of the corrugated pipe main body is provided with a metal winding pipe in an embedded manner, and the outer surface of the metal winding pipe is uniformly wrapped with a metal knitted filter screen to form a thermal insulation layer to reduce the heat conduction of a pipe body. A metal inner lining ring is arranged at a port of the corrugated pipe main body so that a port of the metal winding pipe can be fixed to a port of the corrugated pipe main body, a metal outer ring with a protection cover is further arranged at the port of the corrugated pipe main body so that transition waves at the two ends of the corrugated pipe main body can be prevented from being collided, a metal flange is connected to an outer port of the metal outer ring, and the metal flange is used for being connected with an exhaust manifold or a silencer. The shape of the inner wall of the corrugated pipe is determined through a shape curve formula. By means of the corrugated pipe, the automobile exhaust treatment efficiency of the corrugated pipe is effectively improved.

Description

technical field [0001] The invention relates to the technical field of bellows, in particular to a bellows for National VI commercial vehicles. Background technique [0002] The national VI bellows for commercial vehicles is a device used on commercial vehicles and installed between the exhaust manifold and the muffler to make the entire exhaust system a sealed and flexible connection. The device has the functions of shock absorption and noise reduction, convenient installation, prolonging the service life of the exhaust system, and increasing comfort. [0003] At this stage, such manufacturers at home and abroad all use "U" bellows, "2S", "3S" winding pipes and other structures. With the development of the automobile market, higher requirements are put forward for the device's fracture rate, high flexibility, assembly efficiency, cost reduction and efficiency increase, and the popularization and implementation of the National VI emission standard. Gas treatment efficiency...

AI Technical Summary

Problems solved by technology

[0004] Therefore, the present invention provides a national VI commercial vehicle bellows to overcome the problem of low efficiency in the treatment of automobile exhaust due to the single shape and structure of the bellows in the prior art

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