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題 名 | Injection Characteristics of Composite Emulsified Fuels on Diesel Engine Emissions=複合燃料噴霧特性對直噴式引擎廢氣排放之影響 |
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作 者 | 林永嵩; | 書刊名 | 修平學報 |
卷 期 | 21 2010.09[民99.09] |
頁 次 | 頁235-253 |
分類號 | 400.15 |
關鍵詞 | 綠色能源; 直噴式引擎; 廢氣排放機制; 噴霧特性; Green fuels; DI engine; Exhaust emissions; Injection effects; |
語 文 | 英文(English) |
中文摘要 | 本文旨在分析添醇複合燃料之噴霧特性對 DI引擎燃燒廢氣排放機制之影響。從有機廚餘中可提煉出醇類,以不同比例加入石化柴油中成為綠色能源。設計一高溫條件之定容裝置進行燃料之噴霧實驗,以高速攝影系統與雷射粒徑分析儀觀測不同複合燃料在不同添醇量下之噴霧特性;並在引擎穩定運轉時進行廢氣排放量量測。結果證實添加醇類和水的複合燃料特殊噴霧微爆現象有助於液氣混合,改善 DI引擎污染問題。NOx與高溫排放污染明顯有改善情形,在適當噴霧正時與添醇量下,smoke量有降低趨勢;在無添加劑輔助下,CO,HC與 CH2O醛類而言則有惡化情形。就整體 DI引擎廢氣排放分析而言,10~15% 含水乙醇型複合燃料有較優的表現。 |
英文摘要 | The injection effects of diesel-alcohol-water composite emulsified fuels on DI engine performance and exhaust emission mechanisms are studied in this paper. Alcohols were prepared from waste foods and added into fossil diesel fuels called green fuels. An experimental system was developed to investigate the fuel effects on engine performance. Fuels were injected into a constant volume bomb, which simulated elevated temperature conditions in a diesel chamber. High-speed photography and laser diffraction were used for measuring spray characteristics, and engine tests were conducted by measuring exhaust emissions with various alcohol contents. The experimental results indicated that NOx emission decreased obviously compared to the use of diesel fuel. Under the control of injection timing and alcohol content, emissions decreased. In conclusion, the DI engine emits lower exhaust emissions when burning diesel-ethanol-water fuel with 10~15% ratio. |
本系統中英文摘要資訊取自各篇刊載內容。