Is It Normal for the Exhaust Pipe to Rust?

[LeAnnie]

The rusting of the exhaust pipe is a normal occurrence. The functions of the exhaust pipe include: 1. Reducing environmental pollution—the exhaust pipe contains a purification device, with the three-way catalytic converter effectively cleaning harmful gases from the exhaust; 2. Ventilation and exhaust—the car's exhaust pipe operates in a cycle of intake, compression, power, and exhaust, and without the exhaust pipe, the car would not function; 3. Noise reduction—the exhaust pipe is equipped with a muffler, which reduces the car's noise by diverting airflow through multiple channels, causing friction and collisions between the diverted flows to gradually decrease airflow speed, thereby lowering noise through repeated cycles. The principle of the three-way catalytic sensor involves oxidation-reduction reactions, preventing normal chemical reactions and promoting specific oxidation-reduction chemical reactions.