关键词: 关门声品质, 仿贝壳砖-泥复合结构, 门锁, 泄压阀

Abstract: As an important part of the car, the quality of the door closing sound directly affects the user's driving experience. In this study, the door locks and pressure relief valves, which affect the sound quality of closing doors, are optimized for an SUV model using a shell-like brick-mud composite structure. The results show that: after optimization, the secondary locking sound of the door lock basically disappears, and the medium and high frequency rattling sound is significantly improved; after optimization, the loudness of the pressure relief valve decreases by 1.51 sone, and the blade slapping sound basically disappears; after optimization, the subjective score improves by 15.4% compared with that before optimization. The imitation shell-brick-mud composite structure has a significant effect on improving the closing sound quality of SUV models, which provides new ideas and methods for the acoustic design of automobiles.

Key words: Door closing sound quality, Imitation shell tile-mud composite structure, Door lock, Relief valv