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題 名 | 機車溫車階段之噪音檢測和評估=Noise Measurement and Evaluation for Motorcycles in the Warm-up Stage |
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作 者 | 王栢村; | 書刊名 | 國立屏東技術學院學報 |
卷 期 | 5:1 1996.03[民85.03] |
頁 次 | 頁9-18 |
分類號 | 445.6 |
關鍵詞 | 機車噪音; 溫車; 噪音污染位準; Motorcycle noise; Warm-up; Noise pollution level; |
語 文 | 中文(Chinese) |
中文摘要 | 本論文旨在模擬實際機車溫車時,探討機車在溫車階段到起步前之噪音檢測與評估 。 首先定義溫車時間是 200 秒, 共取機車樣本數 22 部, 從發動引擎開始, 持續在怠速狀 態下溫車 200 秒, 再加速起步, 以精密噪音計記錄時間域噪音量分佈, 並同時記錄八音階 頻率響應, 以作為進一步評估與分析之參考。 機車在定義之溫車階段, 有 50% 樣本數 (11 部機車 )其噪音污染位準超過 74dBNP, 多數機車起步時之瞬間加速噪音亦達 80dBA 以上, 確實對住宅安寧造成影響。機車噪音頻率域分析結果, 將可提供對機車噪音改善之依據。本 論文發展之溫車階段噪音評估方法, 將可做為其它車輛之評估以及提供訂定相關環保法規之 參考。 |
英文摘要 | This paper presents the sound measurement and noise evaluation of motorcycle in the warm-up stage. The warm-up stage is defined as an amount of 200 seconds. The peak noise level is also recorded while the motorcyle starts moving. A total number of 22 various type motorcycles is selected for experimental measurements. To To evaluate motorcycle noise in the warm-up stage, time and frequency domain analysis are made. The results show that the noise pollution level of 11 motorcycles at the warm-up stages is over 74 dBNP which level will not be acceptible for the resident area. The instant accelerating noise is over 80dBA. The 1/1 octave frequency spectrum analysis is also provided and can be used for noise attenuation. This work developes the evaluation methods of motorcycle noise in the warm-up stage and can be adopted to establish the noise criteria for motorcycles as well as other vehicles. |
本系統中英文摘要資訊取自各篇刊載內容。