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    Please use this identifier to cite or link to this item: http://ir.cnu.edu.tw/handle/310902800/29751


    標題: Carbonaceous composition changes of heavy-duty diesel engine particles in relation to biodiesels, aftertreatments and engine loads
    作者: Cheng, Man-Ting
    Chen, Hsun-Jung
    Young, Li-Hao
    Yang, Hsi-Hsien
    Tsai, Ying I.
    Wang, Lin-Chi
    Lu, Jau-Huai
    Chen, Chung-Bang
    貢獻者: 環境工程與科學系
    關鍵字: heavy-duty diesel engine
    Diesel engine particles
    Organic carbon
    Elemental carbon
    Control technology
    日期: 2015-10
    上傳時間: 2016-04-19 19:06:53 (UTC+8)
    出版者: Elsevier Science Bv
    摘要: Three biodiesels and two aftertreatments were tested on a heavy-duty diesel engine under the US FTP transient cycle and additional four steady engine loads. The objective was to examine their effects on the gaseous and particulate emissions, with emphasis given to the organic and elemental carbon (CC and EC) in the total particulate matter. Negligible differences were observed between the low-sulfur (B1S50) and ultralow-sulfur (B1S10) biodiesels, whereas small reductions of OC were identified with the 10% biodiesel blend (B10). The use of diesel oxidation catalyst (DOC1) showed moderate reductions of EC and particularly CC, resulting in the OC/EC ratio well below unity. The use of DOC plus diesel particulate filter (DOC2+DPF) yielded substantial reductions of CC and particularly EC, resulting in the OC/EC ratio well above unity. The OC/EC ratios were substantially above unity at idle and low load, whereas below unity at medium and high load. The above changes in particulate CC and EC are discussed with respect to the fuel content, pollutant removal mechanisms and engine combustion conditions. Overall, the present study shows that the carbonaceous composition of PM could change drastically with engine load and aftertreatments, and to a lesser extent with the biodiesels under study. (C) 2015 Elsevier B.V. All rights reserved.
    關聯: Journal of Hazardous Materials, v.297,pp.234-240
    Appears in Collections:[環境工程與科學系(所)] 期刊論文

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