What are the functions of each component of the exhaust system?

In view of the current development situation, environmental protection, energy saving and safety have become the three major themes of automobile development, after all, the harm caused by environmental pollution is irreversible, although not all, but the environmental problems caused by automobile exhaust can not be underestimated, with the increase in car ownership, automobile exhaust has become one of the air pollution sources, has aroused everyone's attention.

Speaking of this, we have to mention the automobile exhaust system, the main role of this part is to emit the exhaust gas generated in the engine work, while reducing the exhaust gas pollution and noise. The exhaust system is generally composed of exhaust manifold, exhaust pipe, three-way catalytic converter, automobile muffler and exhaust tailpipe, etc. What function do they each have? Let's find out.

1. Exhaust manifold

Exhaust manifold is an important part of the car, it is connected with the cylinder block or cylinder head, the exhaust gas of each cylinder is concentrated into the exhaust manifold, with different pipelines, the role of the exhaust manifold is to collect the exhaust gas from each cylinder, and through the exhaust pipe and muffler, and finally discharged into the atmosphere.

The exhaust manifold can reduce the exhaust resistance, so that the disabled gas can be discharged as clean as possible, so as not to affect the output power of the engine and reduce fuel consumption; The raw material of the exhaust manifold has the characteristics of heat resistance and high temperature resistance, which can reduce the thermal stress and thermal deformation of the exhaust manifold, and is conducive to the optimization and extension of service performance and service life.

2. Exhaust pipe

The position of the exhaust pipe between the engine exhaust manifold and the muffler makes the whole exhaust system flexible. In the driving, the pressure of the exhaust gas when it leaves the engine will be very large, resulting in a lot of noise, the exhaust pipe is equipped with a silencer, which can play a certain role in noise reduction, therefore, the exhaust pipe has the effect of shock absorption and noise reduction (noise reduction); In the middle part of the exhaust pipe, the "three-way catalytic converter" device has the effect of reducing pollution, so that the automobile exhaust is purified and the air pollution is reduced.

3. Three-way catalyst

The three-way catalytic converter is installed behind the engine exhaust manifold and is generally composed of a housing, a heat shield and a catalyst carrier (with a catalyst attached to the surface). This is the most important purification device in the exhaust system, which can carry out a certain chemical reaction between the harmful gases in the exhaust gas and the internal active substances, and convert them into harmless gases, so as to play a purification role and reduce the noise of the exhaust gas emitted by the engine.

4. Exhaust tailpipe

Exhaust tailpipe is a pipe connecting the engine and the tail of the car, the main function of this part is to reduce the noise generated by the engine; Exhaust gas; It also has a certain aesthetic decorative function. Under normal circumstances, the original car exhaust pipe does not have a beautiful and unique shape, and many installed tailpipes have a beautiful appearance and can play a certain decorative role.

5. Muffler

As the name suggests, the main role of the car muffler is to eliminate the sound and reduce the noise generated when the car engine is working. If the exhaust gas is discharged directly into the atmosphere, it will inevitably produce strong noise, and if the exhaust gas passes through the muffler, the exhaust pressure can be reduced, thereby reducing the exhaust noise.

The existence of the automobile exhaust system is to maintain the performance of the car for the owner himself, to protect the environment from pollution in the context of the environment, and to the car modification enthusiasts, it is to their liking and meet the aesthetic needs. No matter what the needs, GRWA will do our best to provide you with high-quality and reliable products with sincere and professional service attitude, welcome to consult and contact.