Although car travel is great, there are also some drawbacks. Some cars have a certain level of noise that can cause trouble for people, but in fact, most cars' noise comes from their exhaust pipes. Without a muffler, the noise can reach over 100 decibels at a certain speed. Bringing some trouble while driving, adding a muffler can also have different effects. Let's take a look at the function of a car exhaust muffler? The exhaust muffler of a vehicle is the main component of driving noise. There are strict regulations on the noise limits of various vehicles around the world, and exhaust mufflers are devices that reduce exhaust noise.
According to the principle and structure of mufflers, car mufflers can be divided into three categories: resistant mufflers, resistive mufflers, and impedance composite mufflers
1. Resistance silencers form various sound-absorbing modules such as expansion chambers and resonance chambers through pipes, baffles, and other components. Sound waves reflect and interfere during propagation, reducing sound energy and achieving the purpose of soundproofing. The silencing frequency range of resistant mufflers is limited, generally low, with good silencing effect in the mid frequency range and poor silencing effect in the high frequency range. Trucks often use resistant mufflers.
2. Resistance car muffler E is a type of muffler that adds sound-absorbing materials around the internal exhaust pipe to absorb sound energy and achieve the purpose of noise reduction. For mid to high frequency mufflers, the effect is good. It is rarely used as a car exhaust muffler. It is usually used in conjunction with a resistor muffler.
3. Impedance composite car muffler is a muffler composed of sound resistant modules and sound-absorbing materials. It has the common characteristics of resistance and resistance car muffler. Has good noise reduction effect for low, medium, and high frequency noise. Reduce engine exhaust noise to ensure safe and effective discharge of high-temperature exhaust gases. As a part of the exhaust pipe, the muffler should ensure smooth exhaust, low resistance, and sufficient strength. The muffler should withstand high temperature exhaust of 500 ℃~700 ℃, ensuring that it is not damaged or loses its silencing effect within the specified driving range.
