Research on the sound absorption, barrier, and heat transfer of engine compartment noise has found that single materials cannot meet the requirements. Multiple material composites and specific composite forms can effectively solve the problem.

Match different composite materials according to the driving area of the vehicle. Specific solutions can be consulted with engineers.

Engine compartment noise:

The impact of engine and motor noises inside the bus is enormous. As the vehicle speed increases, the influence of the power source on the noise inside the bus becomes stronger. Therefore, the first step in noise control is to reduce the impact of the power source on the interior of the bus.