基于Virtual Lab的汽车进气系统NVH性能优化

Vehicle intake system NVH performance promoted by Virtual Lab

文章针对某MPV汽车车内噪声大的问题,通过屏蔽法识别进气噪声为主要噪声源,为降低车内噪声提高汽车NVH性能,运用三维软件LMS Virtual Lab对进气系统进行仿真分析,找出问题原因,提出改进措施,通过结构改进有效地降低了进气噪声,改善了整车NVH性能。

This paper aims at the problem of high interior noise of a MPV vehicle, the intake noise was identified as the main noise source by shielding method, then 3 d software LMS Virtual Lab was used to simulate and analyze the intake system, cause of the problem were discovered, and then modification measures were proposed.Through structure optimization, the intake noise was reduced effectively, and thus the overall NVH performance of the vehicle was improved.