What Decibel Level Indicates Good Sound Insulation in Cars?
1 Answers
Vehicle noise standards are below 60 decibels. Noise refers to the sound emitted by road and rail vehicles during operation. Additional information is as follows: 1. Causes of excessive car noise: carbon buildup in the engine; shock absorber malfunction; large gaps in the cabin or vehicle body; aging tires; internal damage to valve guides; cooling system failure; poor-quality engine oil; engine misfire; spark plug carbon buildup. 2. Solutions for excessive car noise: install sound-absorbing foam material under the hood to suppress vibrations caused by the hood and absorb a significant amount of noise; use damping plates combined with sound-absorbing pads to address road and tire noise; install or replace door seals; tighten screws or replace faulty components.