文献类型：期刊文献

英文题名：Experimental study on the performance of and emissions from a low-speed light-duty diesel engine fueled with n-butanol-diesel and isobutanol-diesel blends

作者：Gu, Xiaolei[1,2];Li, Guo[2,3];Jiang, Xue[1];Huang, Zuohua[1];Lee, Chia-fon[2,4,5]

机构：[1]Xi An Jiao Tong Univ, State Key Lab Multiphase Flow Power Engn, Xian 710049, Peoples R China;[2]Univ Illinois, Dept Mech Sci & Engn, Urbana, IL USA;[3]E China Univ Sci & Technol, Dept Mech Sci & Engn, Shanghai 200237, Peoples R China;[4]Tsinghua Univ, Ctr Combust Energy, Beijing 100084, Peoples R China;[5]Tsinghua Univ, State Key Lab Automot Safety & Energy, Beijing 100084, Peoples R China

年份：2013

卷号：227

期号：2

起止页码：261

外文期刊名：PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART D-JOURNAL OF AUTOMOBILE ENGINEERING

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000316764600010)】；

基金：This work is supported in part by the US Department of Energy (grant no. DE-FC26-05NT42634), and by the US Department of Energy Graduate Automotive Technology Education Centers of Excellence (grant no. DEFG26-05NT42622). This work is also supported by the National Natural Science Foundation of China (grant nos 51136005 and 51121092).

语种：英文

外文关键词：Isobutanol-diesel; n-butanol-diesel; low-temperature combustion; soot

摘要：The effects of isobutanol-and n-butanol-enriched diesel fuel on the diesel engine performance and emissions are investigated. Neat diesel, 15% isobutanol-85% diesel, 30% isobutanol-70% diesel, 15% n-butanol-85% diesel, and 30% n-butanol-70% diesel blends are investigated in this study. The tests were carried out at light and medium loads and a fixed low engine speed, and by using various combinations of the exhaust gas recirculation rate and the injection timing to investigate the effect of the molecular structure difference on soot formation. The results show that n-butanol-diesel blends give a longer ignition delay than isobutanol-diesel blends do. Hence isobutanol has a higher peak cylinder pressure and a higher premixed heat release rate than n-butanol does. Adding butanol (isobutanol and/or n-butanol) to diesel fuel is able to decrease the soot emissions substantially, while the change in the nitrogen oxide emissions varies slightly. Soot emissions from n-butanol-diesel blends are lower than those from isobutanol-diesel blends. Introducing exhaust gas recirculation and retarding the injection timing are effective approaches to decrease the nitrogen oxide emissions. However, a high exhaust gas recirculation rate leads to a loss in the fuel efficiency. The combination of a low exhaust gas recirculation rate, later injection and butanol blends can achieve low-temperature combustion and simultaneously decrease the nitrogen oxide and soot emissions.