Study On Acoustic Characteristic And Noise Control Measure Of Marine Diesel
The comfort and environment protecting of modern ship are required strictly with the development of marine technology. In 2012, IMO finished the revision of IMO Res. A 468(XII) ’Code of Noise Level On Board Ships Resolution’ .In this revision, the noise level of diesel cabin is required to reduce 5 dB, compared with the initial 110 dB of cabin noise level. The noise level of marine diesel has the important influence on the comfort and acoustic concealment of navy ship, as the main noise source. The noise level evaluation and acoustic contribution analysis of marine diesel are key technical approaches of low-noise diesel design. Diesel Structure-borne noise prediction method is first expounded. The acoustic contribution of the main parts of diesel such as oil pan, inlet and exhaust ports, cylinder heads, valve covers is analyzed ,and the structure- borne noise level of diesel in different working conditions are calculated by Virtual Lab software aiming at representative large power marine diesel. Noise test of diesel are finished, and the noise distribution of diesel is acquired based on noise test data. Finally, noise control measures of diesel are proposed on the basis of the above analysis. The research result can be applied to the vibration and noise control of marine diesel.
Zhigang WANG
Shanghai Marine Diesel Engine Research Institute,China
国际会议
上海
英文
1-5
2013-05-13（万方平台首次上网日期，不代表论文的发表时间）