As we all know, when a vehicle is driving, the high-pressure combustion air in the engine cylinder is discharged outward, which will produce 120dB of environmental noise. In order to meet the relevant requirements of automobile exhaust environmental noise, exhaust pipe muffler is a device used to reduce exhaust environmental noise.

A vehicle muffler is an effective external transmission device for controlling aerodynamic noise. Through internal structural acoustic treatment, the generation and propagation of noise can be greatly reduced without affecting the passage of airflow. After the muffler is assembled, the noise reduction should reach 20-40dB (A), with a subjective decrease of 50-90%.

Where can I hear the mysterious sound of Harley motorcycles? Think of Marlboro cigarettes. That's just tobacco wrapped in paper. In addition to its competitors, Marlboro also has its winning secrets. This part comes from advertising, while the other part comes from culture. There is always someone who smokes Marlboro cigarettes. Such people promote and strengthen the brand image, which can attract more people of the same kind to enter the brand.

The exhaust pipe is a key component of motorcycles, playing a significant role in improving the vehicle's grade and level. I have never seen professional reports on the maintenance of motorcycle exhaust silencers before. Based on years of maintenance experience, I would like to share some insights and learn from each other.

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.

Absorption noise reduction method: Absorption car muffler reduces energy by friction of exhaust gas on sound-absorbing materials such as glass fiber, steel fiber, and asbestos.