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| 題 名 | 配備廢氣再循環系統(EGR)車輛之道路實測氮氧化物(NO□)排放分析=NO□ Emission Rates of an EGR-Equipped Vehicle on the Road |
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| 作 者 | 溫蓓章; 莊志偉; 楊智凱; | 書刊名 | 臺灣公共衛生雜誌 |
| 卷 期 | 29:2 2010.04[民99.04] |
| 頁 次 | 頁183-190 |
| 分類號 | 412.33 |
| 關鍵詞 | 廢氣再循環系統; 車輛行駛之氮氧化物排放率; 道路測試; Exhaust gas recirculation system; EGR system; Nitrogen oxides emission rate of moving vehicle; NO□ emission rate of moving vehicle; On road test; |
| 語 文 | 中文(Chinese) |
| 中文摘要 | 目標:車輛配備廢氣再循環系統(Exhaust Gas Recirculation, EGR)是有效降低車輛使用NOx排放量的方案之一;不過,卻缺乏研究探討EGR系統於道路行駛之成效。本研究即探討配備EGR車輛之道路實測NOx排放,並將與推估車輛移動排放NOx總量模式使用的排放係數相互比較。方法:本研究運用車載量測設備(On-Board Emission Measurement),搭載於配備EGR系統之汽油車輛上,進行高速公路與市區道路之實際行駛測試,量測並紀錄逐秒NOx排放率;再進行法規審驗之實驗室測試並紀錄下可比對的數據。結果:前述測試條件下,配備EGR車輛實測之NOx排放係數均低於1 g/km,顯著低於國內車輛排放推估模式所採用的排放係數70%以上;許多狀況下實測值尚不及模式排放係數10%;而且,車速大於70 km/hr高速區間排放係數隨速度變化的趨勢實際應為降低,而非模式係數升高。結論:推估模式所使用之NOx排放係數,無法呈現搭載EGR車輛的NOx排放特性。本研究建議應儘速建立配備EGR車輛的NOx排放係數,並掌握其在車輛總數中的占比,才能較為適切的推估車輛排放NOx總量。 |
| 英文摘要 | Objectives: The Exhaust Gas Recirculation (EGR) system is one solution for reducing vehicle Nitrogen oxide (NOx) emissions; however, there is no research on the effectiveness of the EGR system, particularly with regard to gasoline-engine vehicles. This study aimed to fill in this gap. Methods: This study utilized a gasoline-engine test car equipped with the EGR system and an on-board emission measurement device which recorded second-by-second NOx emission rates during road tests conducted on freeways and urban arterials. Comparable data was recorded from chassis tests performed in the laboratory. Results: NOx emission rates measured from the test car, in all conditions, were less than 1 g/km. This was significantly lower than the parameters set by the EPA model, MOBILE-Taiwan. Moreover, the measured NOx emission rates decreased while vehicular speeds increased over 70 km/hr. This was in contrast with the increasing trend of the parameters from the EPA Model. Conclusions: The results of this study showed that the NOx emission rates of the EGR-equipped vehicle were not well represented by the model parameters. In light of the evidence, this study calls attention to the need for investigation of NOx emission rates of EGR-equipped vehicles in order to better estimate vehicle NOx emission as the popularity of EGR-equipped vehicles in the new car fleet is significant. |
本系統中英文摘要資訊取自各篇刊載內容。