CONFERENCE / ICISDG’23

For the purpose of mitigating emission and noise in an automotive exhaust system, a carbon silencer is utilized. It is assembled using a perforated hollow metal tube, external casing, activated charcoal and a solution of limestone. The engine's exhaust pipe is connected to the carbon silencer. The hazardous sulfur oxides and nitrogen oxides elements generated by the engine are filtered by activated charcoal. Compared to sound produced in a traditional silencer, sound produced within limestone water is less audible. This is primarily due to little sprockets in water molecules, which reduces its amplitude and hence the sound level. Due to the presence of activated charcoal which has more surface area than regular charcoal it is known as Carbon Silencer. When tested in a single cylinder 4-stroke petrol engine, the noise and smoke levels are significantly lower compared to a typical silencer. Automobiles contribute the majority of pollutants, which include carbon monoxide (CO), unburned hydrocarbons (HC), nitrogen oxides (NOx), and lead. Other sources include electric power plants, industrial and household fuel usage, trash burning, and industrial processes. Carbon silencers are used to decrease emissions and noise.