Elecdeer Stainless Steel Exhaust Muffler
Although car travel is good, it also has certain drawbacks. Some cars have certain noises, which cause people trouble, but in fact, most of the car noise comes from the exhaust pipe of the car, exhaust noise, if no muffler is added, At a certain speed, the noise can reach more than 100 decibels. It will bring some trouble in driving, and the muffler will also have a different role. Let's see what the role of the car exhaust muffler is.
What is the role of the exhaust muffler: introduction
The exhaust muffler of a car is the main component of the driving noise. All countries in the world have strict regulations on the noise limit of various vehicles. The exhaust muffler is a device that is born to reduce exhaust noise.
What is the role of the exhaust muffler: classification
Automobile mufflers can be divided into three types: resistive mufflers, resistive mufflers, and impedance composite mufflers according to the muffler principle and structure.
1. Resistive muffler is when various muffler units such as expansion chambers and resonance chambers are formed through pipes, partitions, and other components inside, the sound waves reflect and interfere during propagation, reducing the sound energy to achieve the purpose of muffling. Resistive mufflers have a limited muffler frequency band, usually good for low and medium-frequency bands, but poor for high-frequency mufflers. Most trucks use resistive mufflers.
2. Resistive muffler E is a muffler that fills the sound-absorbing material around the pipe through which the internal exhaust gas passes to absorb sound energy for the purpose of the muffler. It has a good noise reduction effect on medium and high frequency, and it is rarely used as a car exhaust muffler, and it is usually used in combination with a resistance muffler.
3. The impedance composite muffler is a muffler composed of a combination of a resistive muffler unit and a sound-absorbing material. It has the common characteristics of resistive and resistive mufflers. It has a good noise reduction effect on low, medium, and high-frequency noise.
What is the role of the exhaust muffler: role
Reduce the exhaust noise of the engine and enable the high-temperature exhaust gas to be safely and effectively discharged. As part of the exhaust pipe, the muffler should ensure smooth exhaust, low resistance, and sufficient strength. The muffler must withstand the high-temperature exhaust gas of 500 ℃ ~ 700 ℃ to ensure that it will not be damaged or lose the muffler effect within the specified driving mileage of the car.