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Numerical Study on a High Efficiency Gasoline Reformed Molecule HCCI Combustion Using Exergy Analysis
Technical Paper
2017-01-0735
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
In this study, the characteristics and the advantages on engine performance of the reformed molecule HCCI (RM-HCCI) combustion fueled with gasoline were investigated by exergy analysis. The processes of fuel reforming and the closed portion of the engine cycle were simulated integrated with chemical kinetics mechanism at varied compression ratio (CR) and constant speed conditions. Results showed the fuel reforming under high temperature and oxygen-free condition by the exhaust heat recovery and electric heating assistance could drive gasoline to transform to the small-molecule gas fuels, meanwhile enhanced the chemical exergy of the fuel. The reformed fuel contributed to extending ignition delay, so less dilution required in RM-HCCI engine when expanding high load compared with gasoline HCCI engine. Thus, RM-HCCI engine could achieve higher load than gasoline HCCI engine, with the improvements by 12%, 26%, and 31% at CR17, CR19, and CR21, respectively. Under the conditions of high compression ratio, boosting, lean burn, gasoline HCCI engine could achieve the highest exergy efficiencies of 50.2%~51.4% at CR17~CR21, which were further improved to 50.9%~52.6% at the same CR conditions when RM-HCCI combustion employed. These improvements came from chemical exergy gain of the fuel, reduction of exergy destruction, and the increase of work-extraction efficiency by fuel property changed and less exhaust dilution used improving specific heat ratio, while the extra electric heating consumption lowered some improvements. Furthermore, RM-HCCI combustion improved the flexibility to employ high CR than gasoline HCCI combustion for expanding high load more easily. The engine at CR21 employed RM-HCCI combustion to expand high load and transferred to gasoline HCCI combustion to extend low load, which achieved a wider operation range than gasoline HCCI engine at CR17, meanwhile, exergy efficiencies improved with the increases of 1.8%~2.4%-units. Overall, RM-HCCI combustion employed in the engine promoted to achieve higher load, higher efficiency, and more flexibility to high CR.
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Yu, H. and Su, W., "Numerical Study on a High Efficiency Gasoline Reformed Molecule HCCI Combustion Using Exergy Analysis," SAE Technical Paper 2017-01-0735, 2017, https://doi.org/10.4271/2017-01-0735.Data Sets - Support Documents
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References
- Daw , C. S. , Graves , R. L. , Caton , J. A. , and Wagner , R. M. Summary Report on the Transportation Combustion Engine Efficiency Colloquium Held at USCAR 3rd–4th March Oak Ridge National Laboratory (ORNL), Engines and Emissions Research Cente 2010
- Oakley , A. , Zhao , H. , Ladommatos , N. , and Ma , T. Experimental Studies on Controlled Auto-ignition (CAI) Combustion of Gasoline in a 4-Stroke Engine SAE Technical Paper 2001-01-1030 2001 10.4271/2001-01-1030
- Zhao , H. , Li , J. , Ma , T. , and Ladommatos , N. Performance and Analysis of a 4-Stroke Multi-Cylinder Gasoline Engine with CAI Combustion SAE Technical Paper 2002-01-0420 2002 10.4271/2002-01-0420
- Wang , Y. , Wang , J. , Shuai , S. , Lei , X. , Study of Injection Strategies of Two-stage Gasoline Direct Injection (TSGDI) Combustion System SAE Technical Paper 2005-01-0107 2005 10.4271/2005-01-0107
- Sjöberg , M. , and Dec , J. E. Comparing late-cycle autoignition stability for single-and two-stage ignition fuels in HCCI engines Proceedings of the Combustion Institute 31 2 2895 2902 2007
- Cairns , A. , and Blaxill , H. The Effects of Combined Internal and External Exhaust Gas Recirculation on Gasoline Controlled Auto-Ignition SAE Technical Paper 2005-01-0133 2005 10.4271/2005-01-0133
- Zhao , H. , Xie , H. , and Peng , Z. Effect of Recycled Burned Gases on Homogeneous Charge Compression Ignition Combustion Combustion Science and Technology 177 10 1863 1882 2005
- Christensen , M. , Johansson , B. , Amnéus , P. , and Mauss , F. Supercharged Homogeneous Charge Compression Ignition SAE Technical Paper 980787 1998 10.4271/980787
- Dec , J. , and Yang , Y. Boosted HCCI for High Power without Engine Knock and with Ultra-Low NOx Emissions - using Conventional Gasoline SAE Int. J. Engines 3 1 750 767 2010 10.4271/2010-01-1086
- Yap , D. , Wyszynski , M. , Megaritis , A. , and Xu , H. Applying boosting to gasoline HCCI operation with residual gas trapping SAE Technical Paper 2005-01-2121 2005 10.4271/2005-01-2121
- Yang , J. , Culp , T. , and Kenney , T. Development of a Gasoline Engine System Using HCCI Technology - The Concept and the Test Results SAE Technical Paper 2002-01-2832 2002 10.4271/2002-01-2832
- Hyvönen , J. , Wilhelmsson , C. , and Johansson , B. The Effect of Displacement on Air-Diluted Multi-Cylinder HCCI Engine Performance SAE Technical Paper 2006-01-0205 2006 10.4271/2006-01-0205
- Saxena , S. , Bedoya , I. D. , Shah , N. Understanding Loss Mechanisms and Identifying Areas of Improvement for HCCI Engines using Detailed Exergy Analysis Journal of Engineering for Gas Turbines and Power 135 723 736 2013
- Yan , F. , and Su , W. Numerical Study on Exergy Losses of n-Heptane Constant-Volume Combustion by Detailed Chemical Kinetics Energy & Fuels 28 10 6635 6643 2014
- Sun , H. , Yan , F. , Yu , H. , and Su , W. Analysis of exergy loss of gasoline surrogate combustion process based on detailed chemical kinetics Applied Energy 152 15 11 19 2015
- Yu , H. , Yan , F. , Su , W. Exergy Losses of n-Butanol Constant Volume Combustion by Simulation with Detailed Chemical Kinetics Transactions of CSICE 34 193 200 2016
- Teh , K. , Miller , S. , and Edwards , C. Thermodynamic requirements for maximum internal combustion engine cycle efficiency. Part 1: Optimal combustion strategy International Journal of Engine Research 9 6 449 465 2008
- Edwards , C. , Teh , K. , Miller , S. , and Svrcek M. , Development of Low-Exergy-Loss, High-Efficiency Chemical Engines Global Climate and Energy Project Technical Report Stanford University 2006
- Caton , J. A. Implications of fuel selection for an SI engine: Results from the first and second laws of thermodynamics Fuel 89 11 3157 3166 2010
- Wolk , B. , Ekoto , I. , Northrop , W. F. , Kai , M. , Detailed speciation and reactivity characterization of fuel-specific in-cylinder reforming products and the associated impact on engine performance Fuel 185 348 361 2016
- Wermuth , N. , Yun , H. , and Najt , P. Enhancing Light Load HCCI Combustion in a Direct Injection Gasoline Engine by Fuel Reforming During Recompression SAE Int. J. Engines 2 1 823 836 2009 10.4271/2009-01-0923
- Tsolakis , A. , Megaritis , A. A. , and Wyszynski , M. L. Application of Exhaust Gas Fuel Reforming in Compression Ignition Engines Fueled by Diesel and Biodiesel Fuel Mixtures Energy & Fuels 17 6 1464 1473 2003
- Tsolakis , A. , Megaritis , A. , and Wyszynski , M. L. Low temperature exhaust gas fuel reforming of diesel fuel Fuel 83 1837 1845 2004
- Yap , D. , Peucheret , S. M. , Megaritis , A. , Wyszynski , M. L. , Natural gas HCCI engine operation with exhaust gas fuel reforming International Journal of Hydrogen Energy 31 5 587 595 2006
- Yan , F. , and Su , W. A Promising High Efficiency RM-HCCI Combustion Proposed by Detail Kinetics Analysis of Exergy Losses SAE Technical Paper 2015-01-1751 2015 10.4271/2015-01-1751
- Mehl , M. , Chen , J. Y. , Pitz , W. J. , Sarathy , S. M. , An Approach for Formulating Surrogates for Gasoline with Application toward a Reduced Surrogate Mechanism for CFD Engine Modeling Energy & Fuels 25 11 5215 5223 2011
- Mehl , M. , Pitz , W. J. , Westbrook , C. K. , and Curran , H. J. Kinetic modeling of gasoline surrogate components and mixtures under engine conditions Proceedings of the Combustion Institute 33 1 193 200 2011
- Wang , H. , Yao , M. , Yue , Z. , Jia M. , A reduced toluene reference fuel chemical kinetic mechanism for combustion and polycyclic-aromatic hydrocarbon predictions Combustion & Flame 162 6 2390 2404 2015
- Lin , Z.L. , Yan , F. , Yu , H. , Liu , W.W. , High Temperature Oxygen-Free Reforming and Availability of Reformed Fuel Transactions of CSICE 2016
- Aceves , S. , Flowers , D. , Westbrook , C. , Smith , J. , A Multi-Zone Model for Prediction of HCCI Combustion and Emissions SAE Technical Paper 2000-01-0327 2000 10.4271/2000-01-0327
- Aceves , S. , Flowers , D. , Martinez-Frias , J. , Smith , J. , A Sequential Fluid-Mechanic Chemical-Kinetic Model of Propane HCCI Combustion SAE Technical Paper 2001-01-1027 2001 10.4271/2001-01-1027
- Bedoya , I. , Cadavid , F. , Saxena , S. , Dibble , R. , A Sequential Chemical Kinetics-CFD-Chemical Kinetics Methodology to Predict HCCI Combustion and Main Emissions SAE Technical Paper 2012-01-1119 2012 10.4271/2012-01-1119
- Saxena , S. , Shah , N. , Bedoya , I. and Phadke A Understanding optimal engine operating strategies for gasoline-fueled HCCI engines using crank-angle resolved exergy analysis Applied Energy 114 2 155 163 2014
- Woschni , G. A Universally Applicable Equation for the Instantaneous Heat Transfer Coefficient in the Internal Combustion Engine SAE Technical Paper 670931 1967 10.4271/670931
- Heywood , J. B. Internal Combustion Engines Fundamentals New York McGraw-Hill 1988
- Ogink , R. , and Golovitchev , V. Gasoline HCCI Modeling: An Engine Cycle Simulation Code with a Multi-Zone Combustion Model SAE Technical Paper 2002-01-1745 2002 10.4271/2002-01-1745
- Rakopoulos , C. D. , and Giakoumis , E. G. Second-law analyses applied to internal combustion engines operation Progress in Energy & Combustion Science 32 1 2 47 2006
- Zehe , M. J. , Gordon , S. , McBride , B. J. CAP: A Computer Code for Generating Tabular Thermodynamic Functions from NASA Lewis Coefficients National Aeronautics and Space Administration, Glenn Research Center 2001
- Chavannavar , P. , and Caton , J. Destruction of availability (exergy) due to combustion processes: a parametric study Proceedings of the Institution of Mechanical Engineers, Part A: Journal of Power and Energy 220 7 655 668 2006
- Bejan , A. , Kestin , J. Entropy Generation Through Heat and Fluid Flow New York Wiley 1982
- Yang , C. , and Zhao , H. Naturally aspirated and boosted controlled auto-ignition combustion with positive valve overlap in a four-stroke gasoline engine International Journal of Engine Research 14 5 496 511 2013
- Haraldsson , G. , Tunestål , P. , Johansson , B. , and Hyvönen , J. HCCI Closed-Loop Combustion Control Using Fast Thermal Management SAE Technical Paper 2004-01-0943 2004 10.4271/2004-01-0943
- Saxena , S. , Chen , J. , and Dibble , R. Maximizing Power Output in an Automotive Scale Multi-Cylinder Homogeneous Charge Compression Ignition (HCCI) Engine SAE Technical Paper 2011-01-0907 2011 10.4271/2011-01-0907
- Yin , L. , Ingesson , G. , Tunestal , P. , Johansson , R. , An Experimental Investigation of a Multi-Cylinder Engine with Gasoline-Like Fuel towards a High Engine Efficiency SAE Technical Paper 2016-01-0763 2016 10.4271/2016-01-0763
- Eng , J. Characterization of Pressure Waves in HCCI Combustion SAE Technical Paper 2002-01-2859 2002 10.4271/2002-01-2859
- Westbrook , C. K. Chemical kinetics of hydrocarbon ignition in practical combustion systems Proceedings of the Combustion Institute 28 2 1563 1577 2000
- Simmie , J. M. Detailed chemical kinetic models for the combustion of hydrocarbon fuels Progress in energy and combustion science 29 6 599 634 2003
- Edwards , K. D. , Wagner , R. M. , Defining engine efficiency limits 17th DEER Conference Report 3rd–6th October, 2011 Detroit, MI, USA