摘要
采用声强测量法对柴油机进行表面辐射噪声的测量,利用声强分布云图找到柴油机主要噪声源来自于气门室罩、油底壳、增压器和高压油泵。计算它们对整机噪声声功率的贡献,为降低该型柴油机的表面辐射噪声提供有效的参考依据。
The surface noise of diesel engines was measured by using the sound intensity method. Using the data of contour of the sound intensity, the main noise sources of diesel engine, oil pan, booster and high pressure oil pump, were identified. Their contributions to the noise power were analyzed. Based on the analysis, some effective reference data was provided for reducing this type of diesel engine＇ s noise.
出处
《噪声与振动控制》
CSCD
北大核心
2008年第5期182-184,共3页
Noise and Vibration Control
关键词
声学
声强
柴油机
噪声源
acoustics
sound intensity
diesel engine
noise source
