The role of bellows in automobile exhaust system

Automobile exhaust bellows, also known as automobile exhaust pipe hose, is a flexible metal pipe that has been bent, elongated, and compressed. It is mainly installed in the exhaust pipe between the engine exhaust branch pipe and the muffler, so that the entire exhaust system The connection is flexible, and it is a flexible connection. This accessory is a part of the automobile exhaust system. The purpose is to reduce engine noise and vibration, reduce gas pollution, and prolong the life of the exhaust noise reduction system.

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Mainly used in light trucks, minibuses and buses. Its structure is a double-layer corrugated pipe covered with a steel wire mesh sleeve, and both ends are straight-edge section outer snap ring structures. In order to make the sound attenuation effect better, expansion joints or mesh sleeves can be installed in the bellows.
Material: The main material is stainless steel SUS304. Sheath and joint material can be stainless steel or aluminized steel.
When driving, the pressure of the exhaust gas will be very high when it leaves the engine, and the noise will be very loud. There is a muffler in the exhaust pipe, which can play a certain role in silence; Catalyst” device, which can play a role in reducing pollution. The device can convert harmful gases such as carbon monoxide, hydrocarbons and nitrogen oxides emitted by automobile exhaust into harmless carbon dioxide, water and nitrogen through redox, so that automobile exhaust can be purified and air pollution can be reduced.

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The automobile bellows have the following functions:

1. Improve the durability and fatigue resistance of the exhaust pipe.

2. To prevent damage to various accessories and welding parts of the exhaust pipe caused by sudden braking or sudden refueling during driving.
3. Make up for the incorrect error of the exhaust system during the manufacturing and installation process.
4. Absorb the energy of engine exhaust pipe and automobile bellows corresponding to the movement, high temperature resistance.
5. To prevent the damage to the exhaust system of the vehicle during the bumpy process, the function of the automobile bellows plays a key role. The automobile bellows are generally soft connections on hard pipes to slow down the vibration and deformation of the pipes.

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During the long-term use of the bellows, there will be crest cracking. After a problem occurs, we need to conduct a preliminary analysis of the cracks, fractures and processing of the failed bellows, and then use the same batch of materials to re-manufacture the bellows.

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The corrugated pipe product has a unique shape and design. The wire harness corrugated pipe will be designed to be smooth during production. The advantage of this design is to increase its flow rate and have strong compression resistance, which is suitable for use in various situations. Wire harness corrugated pipe has excellent corrosion resistance, which can ensure long-term use, and is not easy to hide dirt and cause secondary pollution to the human body. It is a material with stable performance so far. Wire harness bellows is a new type of lightweight pipe made of high-density polyethylene as the main raw material. This product has the characteristics of light weight, high pressure resistance, good toughness, fast construction, and long life. The performance has been favored by the majority of users.


Post time: Feb-08-2023