Abstract: With the tightening of commercial vehicle noise regulations, low-frequency noise control in the intake system is one of the measures to improve overall noise, vibration, harshness (NVH) performance. This research addresses the challenge of achieving efficient noise reduction across a wide frequency range in heavy-duty truck intake systems due to spatial constraints and flow resistance limitations in traditional muffler designs through forward engineering. For a specific heavy-duty truck intake system, an innovative integrated high-position air intake tube structure is proposed. By designing internal ribs to create a three-channel cross-sectional transition structure and integrating Helmholtz resonators, the method utilizes acoustic impedance abrupt changes and phase interference theory to achieve broadband noise reduction and targeted frequency attenuation. Simulation analysis and experimental verification demonstrate significant noise control effects in the intake system, with this research providing practical guidance for engineering applications.

Key words: heavy-duty truck high-position air intake pipe; broadband noise attenuation; Helmholtz resonance chamber; specific frequency noise reduction; transmission loss; structural optimization

摘要： 随着商用车噪声法规加严，进气系统低频噪声控制是改善整车噪声、振动、声振粗糙 度（NVH）性能的措施之一。研究通过正向开发设计，解决重卡进气系统传统消声方案因布 置空间与流阻限制，难以在宽频范围内实现高效降噪的难题。针对某型重卡进气系统，提出 一种集成式高位引气管创新结构。通过在其内部设计加强筋形成三通道截面突变结构，并集 成亥姆霍兹谐振腔，利用声阻抗突变、相位干涉理论实现宽频消声与特定频率降噪。经仿真 分析试验验证，进气系统噪声控制效果显著，研究对工程应用具有指导意义。

关键词: 重卡高位引气管；宽频带消声；亥姆霍兹谐振腔；特定频率降噪；传递损失；结构 优化