Jinqu specializes in producing mufflers, SCR exhaust gas aftertreatment systems, and air reservoirs

National III Muffler This is a silencing device that meets the national third-stage motor vehicle emission standards. It is mainly used to reduce engine exhaust noise. The following is a relevant introduction:
Working Principle
- Resistance Silencing: The muffler interior is filled with porous sound-absorbing materials, such as glass wool and rock wool. When exhaust gas from the engine passes through the muffler, sound waves enter the pores of the material, causing friction with the material, converting sound energy into heat energy that dissipates, thereby reducing noise. It is mainly effective in reducing mid-to-high frequency noise.
- Reactance Silencing: Utilizing differently shaped pipes and chambers within the muffler, by altering the cross-sectional area and length of the exhaust gas flow path, sound waves are reflected and interfered with during propagation, causing some sound waves to cancel each other out. This is mainly used to reduce low-frequency noise.
- Combined Resistance-Reactance Silencing: Combines resistance silencing and reactance silencing to achieve better silencing effects across a wider frequency range, meeting the noise control requirements of the National III emission standards.

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