关键词: 燃料电池汽车；涡旋式压缩机；二级隔振；振动噪声；优化设计

Abstract: When the air conditioning of a fuel cell vehicle is turned on, the noise inside the vehicle and the vibration of the steering wheel are relatively large. Subjectively, the sound inside the vehicle at certain speeds has obvious ear pressure, which is unacceptable. This paper analyzes and studies the problem by using the vibration isolation theory of vibration system. Through the test and analysis of the vibration isolation performance of the whole vehicle under the condition that the air conditioner is turned on, it puts forward the way of using the two-stage rubber vibration isolation system for the air conditioner compressor bracket, optimizes the vibration isolation performance of the compressor bracket, and solves the problem of large vibration noise in the vehicle. For the air conditioning compressor body, it is of high engineering significance to give full play to the best refrigeration performance of the air conditioning compressor without jumping the resonance speed range.

Key words: Fuel cell vehicle; Scroll compressor; Two-stage vibration isolation; Vibration noise; Optimal design