Noise and vibration tests for fuel cell vehicel and noise sources identification

Noise and vibration tests for fuel cell vehicle are made by respectively acquiring the vibration and noise signals when it is independently working with the air auxiliary system and the hydrogen auxiliary system.Through spectrum analysis it is identified that the air auxiliary system,the hydrogen auxiliary system and the cooling water pump are the main vibration and noise sources of the fuel cell vehicle.Some effective improvement programs,especially for the fan and the cabinet of hydrogen auxiliary system,and some feasible scheme to reduce noise and vibration of the vehicle are proposed.So it is useful to reduce noise and vibration for fuel cell vehicle by determining the noise and vibration sources,which are identified with the modern signal analysis technology.