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A Numerical Study on the Effects of Hot EGR on the Operation of Natural Gas Engine Ignited by Diesel-Butanol Blends
Technical Paper
2017-01-0760
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
Butanol, which is a renewable biofuel, has been regarded as a promising alternative fuel for internal combustion engines. When blended with diesel and applied to pilot ignited natural gas engines, butanol has the capability to achieve lower emissions without sacrifice on thermal efficiency. However, high blend ratio of butanol is limited by its longer ignition delay caused by the higher latent heat and higher octane number, which restricts the improvement of emission characteristics. In this paper, the potential of increasing butanol blend ratio by adding hot exhaust gas recirculation (EGR) is investigated. 3D CFD model based on a detailed kinetic mechanism was built and validated by experimental results of natural gas engine ignited by diesel/butanol blends. The effects of hot EGR is then revealed by the simulation results of the combustion process, heat release traces and also the emissions under different diesel/butanol blend ratios. To get a better fundamental understanding of the EGR effects, the explanations for the effects induced by hot EGR is aided by 0D simulations. The results indicate that the ignitable range of n-butanol blend ratio can be extended from 40% to 60% by the adoption of hot EGR. Besides, the thermal efficiency could be improved by adding appropriate fraction of hot EGR at n-butanol ratios higher than 30%. Generally, optimized thermal efficiency and emission characteristics of NOx and CO can be achieved with adding hot EGR by 5% and 10%. It is also find that improvements in PAH emissions can be obtained by adding hot EGR at n-butanol blend ratios smaller than 30% and PAHs with more than two rings could be reduced by adding n-butanol.
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Authors
Citation
Li, M., Meng, X., HOU, J., Gao, S. et al., "A Numerical Study on the Effects of Hot EGR on the Operation of Natural Gas Engine Ignited by Diesel-Butanol Blends," SAE Technical Paper 2017-01-0760, 2017, https://doi.org/10.4271/2017-01-0760.Data Sets - Support Documents
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References
- Masurier , J. B. , Foucher , F. , Dayma , G. , and Dagaut , P. Ozone applied to the homogeneous charge compression ignition engine to control alcohol fuels combustion Applied Energy 160 566 580 2015 10.1016/j.apenergy.2015.08.004
- Chotwichien , A. , Luengnaruemitchai , A. , and Jai-In , S. Utilization of palm oil alkyl esters as an additive in ethanol-diesel and butanol-diesel blends Fuel 88 1618 1624 2009 10.1016/j.fuel.2009.02.047
- Yao , M. , Wang , H. , Zheng , Z. , and Yue , Y. Experimental study of n-butanol additive and multi-injection on HD diesel engine performance and emissions Fuel 89 9 2191 2201 2010 10.1016/j.fuel.2010.04.008
- Rakopoulos , C. D. , Rakopoulos , D. C. , Giakoumis , E. G. , and Kyritsis , D. C. The combustion of n-butanol/diesel fuel blends and its cyclic variability in a direct injection diesel engine Proceedings of the Institution of Mechanical Engineers, Part A: Journal of Power and Energy 225 3 289 308 2011 10.1177/2041296710394256
- Valentino , G. , Corcione , F. E. , Iannuzzi , S. E. , and Serra , S. Experimental study on performance and emissions of a high speed diesel engine fuelled with n-butanol diesel blends under premixed low temperature combustion Fuel 92 1 295 307 2012 10.1016/j.fuel.2011.07.035
- Liu , H. , Li , S. , Zheng , Z. , Xu , J. , and Yao , M Effects of n-butanol, 2-butanol, and methyl octynoate addition to diesel fuel on combustion and emissions over a wide range of exhaust gas recirculation (EGR) rates Applied energy 112 246 256 2013 10.1016/j.apenergy.2013.06.023
- Cheng , X. , Li , S. , Yang , J. , and Liu , B. Investigation into partially premixed combustion fueled with N-butanol-diesel blends Renewable Energy 86 723 732 2016 10.1016/j.renene.2015.08.067
- Visakhamoorthy , S. , Wen , J. Z. , Sivoththaman , S. , and Koch , C. R. Numerical study of a butanol/heptane fuelled Homogeneous Charge Compression Ignition (HCCI) engine utilizing negative valve overlap Applied energy 94 166 173 2012 10.1016/j.apenergy.2012.01.047
- Zhou , X. , Song , M. , Huang , H. , Yang , R. , Wang , M. , and Sheng , J. Numerical Study of the Formation of Soot Precursors during Low-Temperature Combustion of an-Butanol–Diesel Blend Energy & Fuels 28 11 7149 7158 2014 10.1021/ef501370u
- Cho H. , He B. Spark ignition natural gas engines—A review Energy Conversion and Management 48 608 618 2007 10.1016/j.enconman.2006.05.023
- Soylu S. Prediction of knock limited operating conditions of a natural gas engine Energy Conversion and Management 46 1 121 138 2005 10.1016/j.enconman.2004.02.014
- Azimov U. , Tomita E. , Kawahara N. , Harada Y. Premixed mixture ignition in the end-gas region(PREMIER) combustion in a natural gas dual-fuel engine: operating range and exhaust emissions Int. J. Engine. Res 12 5 484 497 2011 10.1177/1468087411409664
- Liu S. , Zhou L. , Wang Z. , and Ren J. Combustion characteristics of compressed natural gas/diesel dual-fuel turbocharged compressed ignition engine Proceedings of the Institution of Mechanical Engineers, P. I. Mech. Eng. D-J. Automob. Eng 217 9 833 838 2003 10.1177/095440700321700909
- Abd Alla G.H. , Soliman H.A. , Badr O.A. , Abd Rabbo M.F. Effect of injection timing on the performance of a dual fuel engine Energy Conversion and Management 43 2 269 77 2002 10.1016/S0196-8904(00)00168-0
- Tomita E. , Harada Y. , Kawahara N. , and Sakane A. Effect of EGR on Combustion and Exhaust Emissions in Supercharged Dual-Fuel Natural Gas Engine Ignited with Diesel Fuel SAE Technical Paper 2009-01-1832 2009 10.4271/2009-01-1832
- Papagiannakis , R. G. , Zannis , T. C. , Yfantis , E. A. , and Hountalas , D. T. Comparative Evaluation of the effect of intake charge temperature, pilot fuel quantity and injection advance on Dual Fuel Compression Ignition Engine Performance Characteristics and Emitted Pollutions Proceedings of the ASME 2009 International Mechanical Engineering Congress & Exposition IMECE 2009-10435 2009 10.1115/IMECE2009-10435
- Shen J. , Qin J. , Yao M. Turbocharged diesel/CNG Dual-fuel Engines with Intercooler: Combustion, Emissions and Performance SAE Technical Paper 2003-01-3082 2003 10.4271/2003-01-3082
- Nwafor , O. M. I. Effect of choice of pilot fuel on the performance of natural gas in diesel engines Renewable energy 21 3 495 504 2000 10.1016/S0960-1481(99)00132-9
- Meng , X. , Nithyanandan , K. , Lee , T. , Li , Y. , An Experimental Study of the Combustion, Performance and Emission Characteristics of a CI Engine under Diesel-1-Butanol/CNG Dual Fuel Operation Mode SAE Technical Paper 2016-01-0788 2016 10.4271/2016-01-0788
- Pang , B. , Xie , M. Z. , Jia , M. , and Liu , Y. D. Development of a phenomenological soot model coupled with a skeletal PAH mechanism for practical engine simulation Energy & Fuels 27 3 1699 1711 2013 10.1021/ef400033f
- Huang J. , Hill P.G. , Bushe W.K. , Munshi S.R. Shock-tube study of methane ignition under engine-relevant conditions: experiments and modeling Combustion and flame 136 1 25 42 2004 10.1016/j.combustflame.2003.09.002
- Wang , H. , Reitz , R. D. , Yao , M. , Yang , B. , Development of an n-heptane-n-butanol-PAH mechanism and its application for combustion and soot prediction Combust. Flame 160 3 504 519 2013 10.1016/j.combustflame.2012.11.017
- Hartmann , M. , Gushterova , I. , Fikri , M. , Schulz , C. , Schießl , R. , and Maas , U. Auto-ignition of toluene-doped n-heptane and iso-octane/air mixtures: High-pressure shock-tube experiments and kinetics modeling Combustion and Flame 158 1 172 178 2011 10.1016/j.combustflame.2010.08.005
- Heufer , K. A. , Fernandes , R. X. , Olivier , H. , Beeckmann , J. , Röhl , O. , and Peters , N. Shock tube investigations of ignition delays of n-butanol at elevated pressures between 770 and 1250K Proceedings of the Combustion Institute 33 1 359 366 2011 10.1016/j.proci.2010.06.052
- Ra , Y. , and Reitz , R. D. A combustion model for IC engine combustion simulations with multi-component fuels Combustion and flame 158 1 69 90 2011 10.1016/j.combustflame.2010.07.019
- Oßwald , P. Güldenberg , H. Kohse-Höinghaus , K. Yang , B. Yuan , T. Qi , F. , Combust. Flame 158 2011 2 15
- Inal , F. Senkan , S.M. , Combust. Flame 131 2002 16 28
- Amsden A. Kiva-3v, release 2, improvements to kiva-3v Los Alamos National Laboratory Los Alamos, NM Report No. LA-UR-99-915 1999