柴油机增压器HISS噪声分析及降噪措施研究

HISS noise Analyze And Reducing measure Research on Turbocharger of Diesel engine

增压技术已经成为现代柴油发动机不可或缺的技术之一,相比自然吸气增压柴油机不仅可以提升扭矩,而且对降低油耗和排放也做出很大贡献,但是增压器工作产生的噪声问题也越来越受到关注(影响车辆舒适性)。HISS噪声是增压器应用过程中普遍遇到的一种噪声,文章对增压器HISS噪声产生的机理及优化方法进行了探讨,并通过实际试验对几种降噪措施进行了验证。

Turbocharger is one of the indispensable technology on modern diesel engine. Turbocharger engine have more excellent torsion compared with natural intake air engine, and also contributed enormously to emission reducing. But the noise of turbocharger have been taken more and more attention, which affect the vehicle’s comfortable feeling. Hiss noise as one of turbocharger’s noise is very universal on application, this paper analyzed the causation of Hiss noise and researched several noise reducing measure（availability） by experiments.