- 會議論文
音質評估系統曁聲場音源轉換技術於機車引擎噪音診斷之應用
Noise Diagnosis of Motorcycle Engine by Using the Sound Quality Evaluation System and Spatial Transformation of Sound Field Technology
並列摘要
This work describes the noise diagnosis of a four-stroke engine by using the silenced Schenck NT 100 dynamometer in the engine semi-anechoic chamber, which is a new test facility of ARTC. The study was performed for identifying an unpleasant noise buried at engine speed 5000 rpm by using B&K sound quality evaluation system to record, analyze, edit and playback the noise. The results is shown that the unpleasant engine noise was contributed from the 8-th harmonic of engine speed. With the assistance of spatial transformation of sound field technique, the location of noise radiation and its generation mechanism were found. The noise was deemed to be caused by the coincidence of excitation force and the CVT case structure resonance at 668 Hz.
並列關鍵字
無資料延伸閱讀
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