Abstract: This paper conducts relevant research on the low-noise design process of the turbocharger intake system and the optimal design of post-compression muffler components, aiming at addressing the high-frequency airflow noise issue in the intake system of passenger vehicle turbochargers. By combining computational fluid dynamics and acoustic finite element simulation methods, it is clarified that low-noise design requires balancing flow resistance and acoustic performance. With the control target of 5 500~8 000 Hz high-frequency airflow noise, the design and verification of post-compression sound-absorbing components from the initial scheme to the optimized scheme were completed. The inserted tubular sound-absorbing structure was determined as the final scheme, which has a transmission loss of no less than 20 dB in the 5 000~8 500 Hz frequency band and meets the engineering requirements for flow resistance, providing an effective technical path for reducing the noise of the turbocharger intake.

Key words: turbocharger; intake system; low-noise design; muffler components; transmission loss

摘要： 文章针对乘用车增压器进气系统的高频气流噪声问题，结合增压器进气系统低噪声设 计流程与压后消声元件优化设计，开展了相关研究。通过计算流体动力学与声学有限元仿真 结合的方法，明确了低噪声设计需要平衡流阻与声学性能；以 5 500～8 000 Hz 高频气流噪声 为控制目标，完成了压后消声元件从初始方案到优化方案的设计与验证，确定插入管式消声 结构为优化后消声器的最终方案，其在 5 000～8 500 Hz 频段传递损失不低于 20 dB，且流阻 满足工程要求，为增压器进气降噪提供有效的技术路径。

关键词: 增压器；进气系统；低噪声设计；消声元件；传递损失