Li Xinling, Huang Zhen, Wang Jiasong, Zhang Wugao
Center for Combustion and Environmental Technology, Shanghai Jiao Tong University, 200030, Shanghai, PR China.
Sci Total Environ. 2007 Sep 1;382(2-3):295-303. doi: 10.1016/j.scitotenv.2007.04.032. Epub 2007 May 30.
Measurements of exhaust particle number concentration and size distribution from an engine fueled with GTL at different engine loads and speeds were carried out by using a two-stage dilution system. The results for GTL were compared with those from the original engine fueled with diesel. The fuel composition and engine operation condition had significant effects on the exhaust particle size distribution, the total exhaust particle number and volume concentrations. For both fuels, the load had no significant influence on the total exhaust particle number concentration at middle speed, while the total exhaust particle number concentration increased with the increase of the load at high speed. At 1400 rpm and 2200 rpm, the total exhaust particle volume concentration increased as the load increased for both fuels. GTL was found to be a "cleaner" fuel. Compared with diesel, under the same operation conditions, the total exhaust particle number concentrations decreased 18-92%, and the total exhaust particle volume concentrations for GTL decreased 21-59%.
通过使用两级稀释系统，对一台使用天然气制油（GTL）的发动机在不同发动机负荷和转速下的排气颗粒数浓度和粒径分布进行了测量。将GTL的测量结果与原使用柴油的发动机的结果进行了比较。燃料成分和发动机运行条件对排气颗粒粒径分布、排气颗粒总数和体积浓度有显著影响。对于两种燃料，在中速时负荷对排气颗粒总数浓度没有显著影响，而在高速时排气颗粒总数浓度随负荷增加而增加。在1400转/分和2200转/分时，两种燃料的排气颗粒总体积浓度均随负荷增加而增加。发现GTL是一种“更清洁”的燃料。与柴油相比，在相同运行条件下，排气颗粒总数浓度降低了18 - 92%，GTL的排气颗粒总体积浓度降低了21 - 59%。
