消声器的模块化设计开发理念

Modular Development Concept of Muffler Design

消声器结构能有效抑制特定频率范围的噪声成分,以降低辐射噪声水平,已广泛应用于管路系统的NVH解决方案。消声结构的设计原理与工程开发,目前已相对较成熟,但如何提高NVH调音效率又保证声学调校的精度?如何实现通用化与多平台的共用,从而降低生产制造成本?为解决这些问题,未来消声器结构设计的全新理念——模块化开发应运而生。首先详细阐述模块化开发的理念与相应结构的声学特性,然后结合实际工程案例论证模块化消声器在增压中冷管NVH开发中的作用,最后对模块化开发的发展优势进行深入探讨。

Muffler structure can effectively suppress the noise components in specific frequency bands and reduce the noise level.Therefore,it is widely utilized for NVH issue solution of duct systems.Currently,design principle and engineering development of the muffler structures have matured.However,how can we improve the efficiency and ensure the accuracy of acoustic tuning simultaneously? How can we promote multi-platform sharing and assembling so as to reduce production and manufacture costs? These problems are needed to be solved urgently.Thus,a new future development concept for muffler design,so called modular development,has appeared.In this paper,the principle of modular development of the muffler structure and its acoustic characteristics are introduced in detail.In addition,combined with an actual engineering case,the modular muffler is designed and manufactured,and its great effect in charged air duct NVH issue is proved.The compressor hiss noise is well attenuated when the modular muffler is attached to the vehicle.Finally,the trend of modular muffler development in the future is deeply discussed.