What are the functions of an exhaust pipe?

[EmmaFitz]

The functions of a car exhaust pipe are: 1. To expel the exhaust gases produced after engine combustion; 2. To reduce vibration and noise, thereby extending the lifespan of the exhaust muffler system. The maintenance methods for a car exhaust pipe are: 1. Avoid water entering the muffler when driving in the rain or washing the car; 2. Regularly clean the dirt inside the exhaust pipe and apply rust-proof oil. The causes of abnormal noise in a car exhaust pipe are: 1. The air-fuel mixture is too rich, and unburned mixture enters the exhaust pipe and backfires upon encountering fresh air; 2. Poor valve sealing leading to incomplete combustion.