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The material of stainless steel 409 muffler is a kind of nickel-free chromium steel, with excellent performance in corrosion resistance, oxidation resistance and high temperature resistance.

The car muffler is mainly used to reduce the noise generated when the engine of the motor vehicle is working, and is one of the key components of the car. Its performance is directly related to the noise level of the car and the driver's hearing experience. So what is the role of car muffler?

We all know that the noise of traditional agricultural tractors is relatively large. The noise mainly comes from diesel engines and exhaust pipes, but the noise of small cars is very small. Why? On the one hand, a lot of sound-absorbing materials are installed in the engine compartment of the car; on the other hand, the exhaust muffler is installed in the car.

The principle of a car silencer is that its exhaust pipe is composed of two pipes of different lengths, which are separated before they meet. Because the difference between the lengths of the two pipes is equal to half of the wavelength of the sound waves emitted by the car, the two columns of sound waves cancel each other and interfere with each other to reduce the sound intensity when superimposed during superposition, so that the sound is reduced, so as to achieve the effect of sound attenuation.