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Where is the car muffler

2023-02-28

At the end of the exhaust pipe, the principle is similar to that of a firearm muffler, and a car muffler is mainly used to reduce the noise generated when the engine of a motor vehicle is working. The car muffler is the thicker part in the middle of the exhaust pipe. The working principle of the muffler: Since the length difference between the two pipes is equal to half of the wavelength of the sound waves emitted by the car, the two columns of sound waves interfere with each other and weaken when they are superimposed. Sound intensity, so that the sound is reduced, so as to play the effect of silencer.

Technology is an important indicator to measure whether an enterprise is advanced, whether it has market competitiveness, and whether it can keep ahead of competitors.

Resistive mufflers mainly use porous sound-absorbing materials to reduce noise. Fixing the sound-absorbing material on the inner wall of the airflow channel or arranging it in a certain way in the pipeline constitutes a resistive muffler. When the sound wave enters the resistive muffler, part of the sound energy is rubbed in the pores of the porous material and converted into heat energy and dissipated; the sound wave passing through the muffler is weakened. A resistive muffler is like a purely resistive circuit in electricity, and the sound-absorbing material is similar to a resistor. Therefore, people call this muffler a resistive muffler. The resistive muffler has a good effect on middle and high frequency noise reduction, but has a poor effect on low frequency noise reduction.

Automobile mufflers are commonly used components of automobiles, which are beneficial to reduce noise pollution during automobile driving, and are made by using the principle of superposition and interference of sound waves.