What are the causes of noise in motor vehicles?
1 Answers
Here is a related introduction to the causes of engine noise: 1. Intake system noise: High-speed gas flows through the air filter, intake pipe, and valve into the cylinder, generating strong aerodynamic noise during the process. Engine noise is mainly transmitted into the cabin through the front fender, engine hood firewall, and exhaust pipe. 2. Road noise: Road noise is formed when the vehicle cuts through the wind at high speeds, and it is also generated by the vibration of the chassis caused by driving. Additionally, gravel hitting the vehicle's chassis produces road noise. Road noise is mainly transmitted into the cabin through the four doors, trunk, front and rear fenders, and front wheel arches. 3. Tire noise: Tire noise is generated by the friction between the tires and the road surface during high-speed driving. The level of tire noise depends on the road conditions and tire tread—the worse the road conditions, the greater the tire noise. Moreover, there is a significant difference in tire noise between asphalt and concrete roads. It is mainly transmitted through the trunk and front and rear fenders.