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Study of Polycyclic Aromatic Hydrocarbons Evolution Processing in GDI Engines Using TRF-PAH Chemical Kinetic Mechanism
Technical Paper
2016-01-0690
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
In the present study, we developed a reduced TRF-PAH chemical reaction mechanism consisted of iso-octane, n-heptane and toluene as gasoline surrogate fuels for GDI (gasoline direct injection) spark ignition engine combustion simulation. The reduced mechanism consists of 85 species and 232 reactions including 17 species and 40 reactions related to the PAHs (polycyclic aromatic hydrocarbons) formation. The present mechanism was validated for extensive validations with experimental ignition delay times in shock tubes and laminar flame speeds in flat flame adiabatic burner for gasoline/air and TRF/air mixtures under various pressures, temperatures and equivalence ratios related to engine conditions. Good agreement was achieved for most of the measurement. Mole fraction profiles of PAHs for n-heptane flame were also simulated and the experimental trends were reproduced well. The vapor-phase and particulate-bound PAHs existed in GDI engine exhaust were sampled and analyzed by GC-MS. We implemented the GDI combustion CFD simulation using CONVERGE code coupling with the TRF-PAH mechanism to predict the combustion characteristics and PAHs evolution processing occurring in cylinder. Good agreements in in-cylinder pressures and PAHs emissions were obtained between experimental and simulated results under various engine operating conditions. The evolution of PAHs and associated small molecules like C2H2 and C3H3 in cylinder was analyzed, and the relationship between the temperature field distribution and the PAHs distribution was also analyzed. In summary, the TRF-PAH mechanism is suitable for PAHs evolution simulation in GDI engine combustion.
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Authors
- Yanzhao An - Tianjin University
- Shengping Teng - Tianjin University
- Xiang Li - Tianjin University
- Jing Qin - Tianjin Internal Combustion Engine Magne
- Hua Zhao
- Zhang Song Zhan - Chongqing Changan Automobile Co., Ltd.
- Tie Gang Hu - Changan Automobile Co., Ltd.
- Bin Liu - Changan Automobile Co., Ltd.
- Jing Zhong - Changan Automobile Engineering Institute
Citation
An, Y., Teng, S., Li, X., Qin, J. et al., "Study of Polycyclic Aromatic Hydrocarbons Evolution Processing in GDI Engines Using TRF-PAH Chemical Kinetic Mechanism," SAE Technical Paper 2016-01-0690, 2016, https://doi.org/10.4271/2016-01-0690.Also In
References
- Official Journal of the European Union Commission Regulation (EC) No 692/2008 18 July 2008
- Braisher , M. , Stone , R. , and Price , P. Particle Number Emissions from a Range of European Vehicles SAE Technical Paper 2010-01-0786 2010 10.4271/2010-01-0786
- Sgro , L.A. et al. investigating the origin of nuclei particles in GDI engine exhausts Combustion and Flame 2012 159 4 1687 1692
- Vanderwal , R.L. An illustration of soot structure by dark field transmission electron microscopy Combustion science and technology 1998 132 1-6 315 323
- Vander Wal , R.L. A TEM methodology for the study of soot particle structure Combustion science and technology 1997 126 1-6 333 351
- Vander Wal , R.L. et al. HRTEM Study of diesel soot collected from diesel particulate filters Carbon 2007 45 1 70 77
- Leermakers , C.A.J. , Musculus , M.P.B. In-cylinder soot precursor growth in a low-temperature combustion diesel engine: Laser-induced fluorescence of polycyclic aromatic hydrocarbons Proceedings of the Combustion Institute 2015 35 3 3079 3086
- Sánchez , N.E. Determination of polycyclic aromatic hydrocarbons (PAH) adsorbed on soot formed in pyrolysis of acetylene at different temperatures Chem Eng Trans 2010 22 131 136
- Sánchez , N.E. et al. Polycyclic aromatic hydrocarbons (PAH), soot and light gases formed in the pyrolysis of acetylene at different temperatures: Effect of fuel concentration Journal of Analytical and Applied Pyrolysis 2013 103 126 133
- Sánchez , N.E. et al. Formation of PAH and soot during acetylene pyrolysis at different gas residence times and reaction temperatures Energy 2012 43 1 30 36
- He , C. et al. Characteristics of polycyclic aromatic hydrocarbons emissions of diesel engine fueled with biodiesel and diesel Fuel 2010 89 8 2040 2046
- Borrás , E. et al. Polycyclic aromatic hydrocarbon exhaust emissions from different reformulated diesel fuels and engine operatingconditions Atmospheric Environment 2009 43 37 5944 5952
- Casal , C.S. , Arbilla , G. , and Corrêa , S.M. Alkyl polycyclic aromatic hydrocarbons emissions in diesel/biodiesel exhaust. Atmospheric Environment 2014 96 107 116
- Tsai , J.H. et al. Emission reduction of NO x, PM, PM-carbon, and PAHs from a generator fuelled by biodieselhols Journal of hazardous materials 2014 274 349 359
- Sadiktsis , I. et al. Particulate associated polycyclic aromatic hydrocarbon exhaust emissions from a portable power generator fueled with three different fuels-A comparison between petroleum diesel and two biodiesels Fuel 2014 115 573 580
- Imtenan , S. et al. Impact of low temperature combustion attaining strategies on diesel engine emissions for diesel and biodiesels: a review Energy Conversion and Management 2014 80 329 356
- Costagliola , M.A. et al. Combustion efficiency and engine out emissions of a SI engine fueled with alcohol/gasoline blends Applied Energy 2013 111 1162 1171
- Elghawi , U.M. et al. Vapour-phase and particulate-bound PAHs profile generated by a (SI/HCCI) engine from a winter grade commercial gasoline fuel Fuel 2010 89 8 2019 2025
- Hsiao-Hsuan , M. et al. A Comparison on the Emission of Polycyclic Aromatic Hydrocarbons and Their Corresponding Carcinogenic Potencies from a Vehicle Engine Using Leaded and Lead-Free Gasoline Environ Health Perspect 2001 109 1285 1290
- An , Y.Z. et al. Development of a PAH (polycyclic aromatic hydrocarbon) formation model for gasoline surrogates and its application for GDI (gasoline direct injection) engine CFD (computational fluid dynamics) simulation Energy 2016 94 367 379
- An , Y.Z. et al. Kinetic modeling of polycyclic aromatic hydrocarbons formation process for gasoline surrogate fuels Energy Conversion and Management 2015 100 249 261
- Tsurushima , T. A new skeletal PRF kinetic model for HCCI combustion Proceedings of the Combustion Institute 2009 32 2 2835 2841
- Oehlschlaeger , M.A. , Davidson , D.F. , and Hanson , R.K. Investigation of the reaction of toluene with molecular oxygen in shock-heated gases Combustion and flame 2006 147 3 195 208
- Gauthier , B.M. , Davidson , D.F. , and Hanson , R.K. Shock tube determination of ignition delay times in full-blend and surrogate fuel mixtures Combustion and Flame 2004 139 4 300 311
- Sileghem , L. et al. Laminar burning velocity of gasoline and the gasoline surrogate components iso-octane, n-heptane and toluene Fuel 2013 112 355 365
- Andrae , J.C. , and Head , R.A. HCCI experiments with gasoline surrogate fuels modeled by a semidetailed chemical kinetic model Combustion and flame 2009 156 4 842 851
- Raj , A. et al. A statistical approach to develop a detailed soot growth model using PAH characteristics Combustion and Flame 2009 156 4 896 913
- Bakali , A.E. , Delfau , J.L. , and Vovelle , C. Experimental study of 1 atmosphere, rich, premixed n-heptane and iso-octane flames Combustion science and technology 1998 140 1-6 69 91
- Inal , F. , and Senkan , S.M. Effects of equivalence ratio on species and soot concentrations in premixed n-heptane flames Combustion and flame 2002 131 1
- An , Y.Z. et al. An experimental study of polycyclic aromatic hydrocarbons and soot emissions from a GDI engine fueled with commercial gasoline. Fuel 2016 164 160 171
- Kuwahara , K. and Ando , H. Role of Heat Accumulation by Reaction Loop Initiated by H2O2 Decomposition for Thermal Ignition SAE Technical Paper 2007-01-0908 2007 10.4271/2007-01-0908
- Senosiain , J.P. , and Miller , J.A. The Reaction of n-and i-C4H5 Radicals with Acetylene The Journal of Physical Chemistry A 2007 111 19 3740 3747