Catalytic converters provide the method of treating exhaust gases. Catalytic converters are located in the exhaust system, between the engine and the muffler.
催化转换器提供一种处理废气的方法。催化转换器位于排气系统中，在发动机和消声器之间。
Ventilation system by sending the exhaust fan, duct, duct parts, muffler etc.
通风系统由送排风机、风道、风道部件、消声器等组成。
At present, the most effective measure to control exhaust noise is using muffler in exhaust system.
目前，控制排气噪声最有效的途径是在排气系统上使用消声器。
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