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A Theoretical Investigation of the Combustion of PRF90 under the Flexible Cylinder Engine Mode
Technical Paper
2017-01-1027
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
On-board fuel reforming offers a prospective clean combustion mode for the engines. The flexible cylinder engine strategy (FCE) is a new kind of such mode. In this paper, the combustion of the primary reference fuel of PRF90 was theoretically investigated in a homogeneous charge compression ignition engine to validate the FCE mode, mainly focusing on the ignition delay time, the flame speed, and the emissions. The simulations were performed by using the CHEMKIN2.0 package to demonstrate the fuel reforming process in the flexible cylinder, the cooling effect on the reformed products, and the combustions of the mixture of the fresh fuel and the reformed products in the normal cylinders. It was found that the FCE mode decreased the ignition delay time of the fuel by about 35 crank angles at a typical engine condition. The reaction pathways analyses indicated that methyl peroxide (CH3OOH), ketohydroperoxides (KETs), and hydrogen peroxide (H2O2) were the key species to decrease the ignition delay time in the reformed products, while the addition of acetone (CH3COCH3) and formaldehyde (CH2O) resulted in misfire in the normal cylinders. The FCE combustion mode increased the laminar flame speed of PRF90 both at 1 atm and 50 atm, with hydrogen (H2) being the key species. Finally, the FCE combustion mode decreased the harmful emissions significantly, such as acetylene (C2H2), ethylene (C2H4), propyne (C3H4), propene (C3H6),1,3-butadiene (1,3-C4H6), and CH2O. The reaction pathway analyses indicated that the reaction pathways were altered by the addition of the reformed species. This work demonstrated that the FCE mode is a potential clean combustion mode.
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Wang, Y., Wei, L., Jia, G., and Yao, M., "A Theoretical Investigation of the Combustion of PRF90 under the Flexible Cylinder Engine Mode," SAE Technical Paper 2017-01-1027, 2017, https://doi.org/10.4271/2017-01-1027.Data Sets - Support Documents
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References
- Yao , M. , Zheng , Z. , and Liu , H. Progress and recent trends in homogeneous charge compression ignition (HCCI) engines Progr Energy Combust Sci. 35 398 437 2009
- Ra , Y. and Reitz , R. The Use of Variable Geometry Sprays With Low Pressure Injection for Optimization of Diesel HCCI Engine Combustion SAE Technical Paper 2005-01-0148 2005 10.4271/2005-01-0148
- Lu , X. , Shen , Y. , Zhang , Y. et al. Controlled three-stage heat release of stratified charge compression ignition (SCCI) combustion with a two-stage primary reference fuel supply Fuel. 90 5 2026 2038 2011
- Lee , C. , Tomita , E. , and Lee , K. Characteristics of Combustion Stability and Emission in SCCI and CAI Combustion Based on Direct-Injection Gasoline Engine SAE Technical Paper 2007-01-1872 2007 10.4271/2007-01-1872
- Reitz , R. , Duraisamy , G. Review of high efficiency and clean reactivity controlled compression ignition (RCCI) combustion in internal combustion engines Progress in Energy and Combustion Science 46 12 71 2015
- Splitter , D. , Hanson , R. , Kokjohn , S. , and Reitz , R. Reactivity Controlled Compression Ignition (RCCI) Heavy-Duty Engine Operation at Mid-and High-Loads with Conventional and Alternative Fuels SAE Technical Paper 2011-01-0363 2011 10.4271/2011-01-0363
- Kim , S. , Kim , Y. , and Lee , J. Analysis of the In-Cylinder Flow, Mixture Formation and Combustion Processes in a Spray-Guided GDI Engine SAE Technical Paper 2008-01-0142 2008 10.4271/2008-01-0142
- Hedge , M. , Weber , P. , Gingrich , J. , Alger , T. et al. Effect of EGR on Particle Emissions from a GDI Engine SAE Int. J. Engines 4 1 650 666 2011 10.4271/2011-01-0636
- Fennell , D. , Herreros , J. , Tsolakis , A. Improving gasoline direct injection (GDI) engine efficiency and emissions with hydrogen from exhaust gas fuel reforming Int. J. Hydrogen Energy 39 10 5153 5162 2014
- Tsolakis , A. , Megaritis , A. , Yap , D. Application of exhaust gas fuel reforming in diesel and homogeneous charge compression ignition (HCCI) engines fuelled with biofuels Energy 33 3 462 470 2008
- Yap , D. , Peucheret , S. , Megaritis , A. et al. Natural gas HCCI engine operation with exhaust gas fuel reforming Int. J. Hydrogen Energy 31 5 587 595 2006
- Eyal , A. , Tartakovsky , L. Reforming Controlled Homogenous Charge Compression Ignition-Simulation Results SAE Technical Paper 2016-32-0014 2016 10.4271/2016-32-0014
- Shudo , T. , Shima , Y. , Fujii , T. Production of dimethyl ether and hydrogen by methanol reforming for an HCCI engine system with waste heat recovery-Continuous control of fuel ignitability and utilization of exhaust gas heat International journal of hydrogen energy 34 18 7638 7647 2009
- Omari , A. , Shapiro , M. , and Tartakovsky , L. Laminar Burning Velocity of Alcohol Reforming Products and Effects of Cellularity on Flame Propagation SAE Technical Paper 2015-01-0775 2015 10.4271/2015-01-0775
- Alger , T. and Mangold , B. Dedicated EGR: A New Concept in High Efficiency Engines SAE Int. J. Engines 2 1 620 631 2009 10.4271/2009-01-0694
- Wang , Y. , Wei , L. , Yao , M. A theoretical investigation of the effects of the low-temperature reforming products on the combustion of n-heptane in an HCCI engine and a constant volume vessel Appl. Energy 181 132 139 2016
- Konno , M. , Chen , Z. , and Miki , K. Computational and Experimental Study on the Influence of Formaldehyde on HCCI Combustion Fueled with Dimethyl Ether SAE Technical Paper 2003-01-1826 2003 10.4271/2003-01-1826
- Born , C. and Peters , N. Reduction of Soot Emission at a DI Diesel Engine by Additional Injection of Hydrogen Peroxide During Combustion SAE Technical Paper 982676 1998 10.4271/982676
- Park , S. , Youn , M. , Lim , Y. et al. Influence of the mixture of gasoline and diesel fuels on droplet atomization, combustion, and exhaust emission characteristics in a compression ignition engine Fuel Process. Technol. 106 392 401 2013
- Kee , R. , Rupley , F. , Miller , J. CHEMKIN II: A FORTRAN package for the analysis of gas phase chemical kinetics Report No. SAND89-8009B Sandia National Laboratory 1989
- Lawrence Livermore National Laboratory Gasoline Surrogate, D.M. https://combustion.llnl.gov/mechanisms/surrogates/gasoline-surrogate
- Mehl , M. , Pitz , W. , Sjöberg , M. , and Dec , J. Detailed Kinetic Modeling of Low-Temperature Heat Release for PRF Fuels in an HCCI Engine SAE Technical Paper 2009-01-1806 2009 10.4271/2009-01-1806
- Mehl , M. , Pitz , W. , Westbrook , C. et al. Conroy, H.J Curran, Autoignition behavior of unsaturated hydrocarbons in the low and high temperature regions Proceedings of the Combustion Institute 33 201 208 2011 10.1016/j.proci.2010.05.040
- Mehl , M. , Pitz , W. , Westbrook , C. et al. Kinetic modeling of gasoline surrogate components and mixtures under engine conditions Proceedings of the Combustion Institute 3 193 200 2011 10.1016/j.proci.2010.05.027
- Mehl , M. , Chen , J. , Pitz , W. , Sarathy , S. , Westbrook , C. An Approach for Formulating Surrogates for Gasoline with Application Toward a Reduced Surrogate Mechanism for CFD Engine Modeling Energy and Fuels 25 5215 5223 2011 org/10.1021/ef201099y
- Mehl , M. , Pitz , W. , Sarathy , M. , Yang , Y. et al. Detailed Kinetic Modeling of Conventional Gasoline at Highly Boosted Conditions and the Associated Intermediate Temperature Heat Release SAE Technical Paper 2012-01-1109 2012 10.4271/2012-01-1109
- Kukkadapu , G. , Kumar , K. , Sung , C. , Mehl , M. , Pitz , W. Autoignition of Gasoline and its Surrogates in a Rapid Compression Machine Proceedings of the Combustion Institute 34 345 352 2013 org/10.1016/j.proci.2012.06.135
- Kukkadapu , G. , Kumar , K. , Sung , C. , Mehl , M. , Pitz , W. Experimental and Surrogate Modeling Study of Gasoline Ignition in a Rapid Compression Machine Combustion and Flame 159 3066 3078 2012 org/10.1016/j.combustflame.2012.05.008
- Lu , T. , Law , C. Toward accommodating realistic fuel chemistry in large-scale computations Prog. Energy Combust. Sci. 35 192 215 2009 org/10.1016/j.pecs.2008.10.002