内燃机噪声的研究综述与思考

Research Review and Consideration on the Noise of Internal Combustion Engine

内燃机是汽车船舶、发电机水泵等机械装备的心脏部件,但在工作时不可避免地会产生噪声,从而对环境、生产和生活等方面造成影响。内燃机噪声是衡量内燃机性能的重要指标之一。通过对国内外现有研究的调查与分析,分析了目前内燃机噪声的研究现状,就内燃机噪声识别、噪声控制两方面的研究进行介绍,最后提出以下研究建议:①通过建立典型零部件噪声特征以方便实际工作中进行内燃机的故障诊断;②通过研究分析声波的负交互作用,以依靠内燃机的自身结构来实现降噪。

Internal combustion engine is the heart of mechanical equipments such as automobile,ship,generator and water pump,but it inevitably produces noise when working,which will affect the environment,production and life.The noise of internal combustion engine is one of the important indexes to measure the performance of intern-al combustion engine.Based on the investigation and analysis of the existing researches at home and abroad,the researches on the noise identification and noise control of internal combustion engine are introduced.The two res-earch suggestions are put forward:①The noise characteristics of typical parts should be built to distinguish the no-ise source of internal combustion engine;②The negative interaction of acoustic waves should be studied in order to reduce noise by means of the self-structure of internal combustion engine.