Where Does Car Noise Come From?
1 Answers
The causes of car noise are: 1. Engine noise, which includes not only the mechanical sounds from the engine block but also the intake system noise. High-speed gases passing through the air filter, intake pipe, and valves into the cylinders generate strong aerodynamic noise during the flow process. Engine noise mainly enters the cabin through the firewall and the front floor area of the driver's compartment. 2. Tire noise, which consists of air noise generated by the airflow between tire tread gaps and the disturbance of air around the tires. 3. Aerodynamic noise, caused by pressure changes due to airflow separation around the car body. 4. Car body structural noise, primarily produced by the vibration of metal components in the body under internal and external forces.