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http://dx.doi.org/10.5050/KSNVN.2008.18.5.516

A Study on the Noise Property and Its Reduction of the FCEV Blower  

Oh, Ki-Seok (인하대학교 대학원 기계공학과)
Lee, Sang-Kwon (인하대학교 기계공학과)
Seo, Sang-Hoon (현대자동차)
Publication Information
Transactions of the Korean Society for Noise and Vibration Engineering / v.18, no.5, 2008 , pp. 516-523 More about this Journal
Abstract
Centrifugal turbo blower is requested highly efficiency and low noise in FCEV, but the noise generated by this machine causes of the most serious problems in the NVH performance. In general, centrifugal turbo blower is dominated by mechanical noise and aerodynamic noise. Mechanical noise is generated by rotation of the bearing, misalignment and unbalance. And aerodynamic noise is generated by the strong intersection between the flow discharged from the impeller and the cut-off in the casing. The first object of this study is to comprehend a noise property of the blower through the noise test. And, second object is to bring up the method that can reduce blower noise.
Keywords
Fuel Cell Electric Vehicle; Centrifugal Turbo Blower; Blade Passing Frequency; Broadband Noise; Splitter Impeller;
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  • Reference
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