Ultrafine particle emissions by in-use diesel buses of various generations at low-load regimes

被引:21
作者
Tartakovsky, L. [1 ]
Baibikov, V. [1 ]
Comte, P. [2 ]
Czerwinski, J. [2 ]
Mayer, A. [3 ]
Veinblat, M. [1 ]
Zimmerli, Y. [2 ]
机构
[1] Technion Israel Inst Technol, Fac Mech Engn, Internal Combust Engines Lab, IL-32000 Haifa, Israel
[2] Beme Univ Appl Sci, Labs IC Engines & Exhaust Emiss Control AFHB, Biel, Switzerland
[3] TTM, VERT Assoc, Niederrohrdorf, Switzerland
关键词
Ultrafine particles; Diesel engine; Diesel particle filter; Filter retrofitting; EXPOSURE; POLLUTION; VEHICLES;
D O I
10.1016/j.atmosenv.2015.02.052
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
Ultrafine particles (UFP) are major contributors to air pollution due to their easy gas-like penetration into the human organism, causing adverse health effects. This study analyzes UFP emissions by buses of different technologies (from Euro II till Euro V EEV - Enhanced Environmentally-friendly Vehicle) at low-load regimes. Additionally, the emission-reduction potential of retrofitting with a diesel particle filter (DPF) is demonstrated. A comparison of the measured, engine-out, particle number concentrations (PNC) for buses of different technological generations shows that no substantial reduction of engine-out emissions at low-load operating modes is observed for newer bus generations. Retrofitting the in-use urban and interurban buses of Euro II till Euro IV technologies by the VERT-certified DPF confirmed its high efficiency in reduction of UFP emissions. Particle-count filtration efficiency values of the retrofit DPF were found to be extremely high - greater than 99.8%, similar to that of the OEM filter in the Euro V bus. (C) 2015 Elsevier Ltd. All rights reserved.
引用
收藏
页码:273 / 280
页数:8
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