某型汽车空调压缩机振动噪声分析研究

ompressor is the main vibration and noise source of the car air conditioning system, it directly affects the vehicle interior harshness (NVH) index. In order to research and discuss the problem that a certain type of vehicle air condition compressor with wobble-plate fixed displacement noise is too high, adopted experiment of gathering the noise and vibration data in a semi-anechoic room, through the dynamics analysis of compressor internal institutions and spectrum analysis of noise and vibration signal, found the unusual vibration was caused by the manufacturing defect of Gleason Arc gear. Through the experiment verified the gear with manufacturing defect is the main problem of compressor' noise and vibration，the gear that accuracy cannot meet the requirement will cause gear damage which affect gear meshing stationarity of operation，affected the vibration and noise of the piston，and increased with the increase of rotational speed.