Effect of Fe-FBC fuel on aldehydes and particulate matter emissions of diesel engine
(1. School of Mechanical Engineering, Tianjin University, Tianjin 300072， China; 2. Luoyang Tractor Research Institute Co., Ltd., Luoyang, Henan 471039， China; 3. State Key Laboratory of Power System of Tractor, Luoyang, Henan 471039， China; 4. School of Automotive and Traffic Engineering, Jiangsu University, Zhenjiang, Jiangsu 212013, China)
Abstract： To control the particulate matter (PM) emissions of diesel engine, the fuel borne catalysts (FBC) were blended into pure diesel with Fe mass fractions of 200, 400 and 600 mg·kg-1 to prepare FeFBC fuels, which were marked as Fe200, Fe400 and Fe600, respectively. The effects of FeFBC fuels on commonrail diesel engine emission characteristics, particle size distribution and soluble organic fraction (SOF) components were investigated by fourier transform infrared (FTIR) emission analyzer, engine exhaust particle sizer (EEPS) spectrometer and gas chromatographymass spectrometry (GCMS), respectively. The results show that the addition of FBC promotes the combustion of diesel, and the formaldehyde and acetaldehyde emissions are lower than those of pure diesel. With the increasing of Fe content in FeFBC, the particle number concentration and the mass concentration distribution are gradually shifted to smaller size. After adding FeFBC, the contents of olefins, acids and polycyclic aromatic hydrocarbons (PAHs) in PM are decreased, and PAHs is changed to lower ring number, while lipid content is increased. The distribution of carbon atom number of SOF components is migrated to lower carbon atom.
