Do you know the function of a car exhaust muffler? Let's introduce it.
What is the function of an exhaust muffler: Introduction.
The exhaust muffler of a car is the main component of car noise. There are strict regulations on the noise limits of various vehicles around the world. An exhaust muffler is a device that reduces exhaust noise.
What is the function of an exhaust muffler: classification.
According to the different principles and structures of automobile mufflers, they can be divided into three categories: resistant mufflers, resistive mufflers, and characteristic impedance composite mufflers.
1. A resistant car muffler refers to various sound-absorbing modules composed of expansion chambers, resonance chambers, and other components through pipes, partitions, etc. During the propagation process, sound waves will reflect and interfere, thereby reducing sound energy and achieving the purpose of soundproofing. The noise reduction frequency of anti muffler is limited, and it generally has good noise reduction effect on low and medium frequency bands, but poor noise reduction effect on high frequency bands. Trucks often use anti muffler.
2. A resistive muffler e is a muffler that is filled with sound-absorbing material around the pipes through which the internal exhaust passes, absorbing sound energy to achieve the purpose of noise reduction. The medium to high frequency noise reduction effect is good, and it is rarely used as a car exhaust muffler. It is usually combined with a resistant muffler.
3. The characteristic impedance composite muffler is a muffler composed of a resistant muffler module and sound-absorbing material, which has the common characteristics of resistant and resistive mufflers. Has a good noise reduction effect on low, medium, and high frequency noise.
What is the function of an exhaust muffler? Function.
Reduce the exhaust noise of the engine and safely and effectively discharge high-temperature exhaust gas. As a part of the exhaust pipe, the muffler must ensure smooth exhaust, low resistance, and sufficient strength. The muffler must undergo high-temperature exhaust at 500 ℃~700 ℃ to ensure that the noise reduction effect is not damaged within the specified driving distance of the car.
