Numerical simulation of dimethyl ether/natural gas blend fuel HCCI combustion to investigate the effects of operational parameters on combustion and emissions

  • Hosein Ezoji
  • Rouzbeh Shafaghat
  • Omid Jahanian


Homogeneous charge compression ignition (HCCI) combustion phasing control is one of the most difficult challenges of operating this new concept of combustion. In this study, a dimethyl ether (DME)/natural gas (NG) blend fuel HCCI engine is simulated to investigate the effect of DME additive on the control of a NG HCCI start of combustion (SOC) timing. The studies are carried out in two sections. Firstly, different mole fractions of DME from 0 to 0.25% are thoroughly examined. In the second part, the effect of general equivalence ratio on the combustion phasing is studied. Moreover, in both sections, the studies are mainly focused on the influence of these two parameter variations on the SOC timing, auto-ignition temperature, heat flux, and heat capacity ratio. A 3D computational fluid dynamic AVL FIRE code coupled with CHEMKIN is adopted to simulate the HCCI combustion. Results showed that while DME amount increases in the mixture, a two-stage heat release rate would appear. DME additive can advance SOC and reduce requiring inlet temperature. Adding only 5% of DME would lead to 6.7-CAD change in SOC. Heat capacity ratio would lead to higher in-cylinder temperature during compression stroke, while equivalence ratio rises. 2.4 CAD change in SOC occurred for increasing equivalence ratio from 0.25 to 0.4.


HCCI Natural gas Dimethyl ether Blend fuel 


  1. 1.
    Lu X, Han D, Huang Z. Fuel design and management for the control of advanced compression–ignition combustion modes. Prog Energy Combust Sci. 2011;37:741–83.CrossRefGoogle Scholar
  2. 2.
    Hanson RM, Kokjohn SL, Splitter DA, Reitz RD. An experimental investigation of fuel reactivity controlled PCCI combustion in a heavy-duty engine. SAE Int J Eng. 2010;3:700–16.CrossRefGoogle Scholar
  3. 3.
    Musculus MP, Miles PC, Pickett LM. Conceptual models for partially premixed low-temperature diesel combustion. Prog Energy Combust Sci. 2013;39:246–83.CrossRefGoogle Scholar
  4. 4.
    Zhao F, Asmus TN, Assanis DN, Dec JE, Eng JA, Najt PM. Homogeneous charge compression ignition (HCCI) engines. SAE technical paper; 2003.Google Scholar
  5. 5.
    Warnatz J, Maas U, Dibble RW. Physical and chemical fundamentals, modeling and simulation, experiments, pollutant formation; 1995.Google Scholar
  6. 6.
    Epping K, Aceves S, Bechtold R, Dec JE. The potential of HCCI combustion for high efficiency and low emissions. SAE technical paper; 2002.Google Scholar
  7. 7.
    Lü X-C, Chen W, Hou Y-C, Huang Z. Study on the ignition, combustion and emissions of HCCI combustion engines fueled with primary reference fuels. SAE technical paper; 2005.Google Scholar
  8. 8.
    Colban WF, Miles PC, Oh S. On the cyclic variability and sources of unburned hydrocarbon emissions in low temperature diesel combustion systems. SAE technical paper; 2007.Google Scholar
  9. 9.
    Noorpoor A, Ghaffarpour M, Aghsaee M, Hamedani A. Effects of fuel additives on ignition timing of methane fuelled HCCI engine. J Energy Inst. 2009;82:37–42.CrossRefGoogle Scholar
  10. 10.
    Opat R, Ra Y, Krieger R, Reitz RD, Foster DE, Durrett RP, et al. Investigation of mixing and temperature effects on HC/CO emissions for highly dilute low temperature combustion in a light duty diesel engine. SAE technical paper; 2007.Google Scholar
  11. 11.
    Sjöberg M, Dec JE, Cernansky NP. Potential of thermal stratification and combustion retard for reducing pressure-rise rates in HCCI engines, based on multi-zone modeling and experiments. SAE technical paper; 2005.Google Scholar
  12. 12.
    Izadi Najafabadi M, Abdul Aziz N. Homogeneous charge compression ignition combustion: challenges and proposed solutions. J Combust. 2013. Scholar
  13. 13.
    Maurya RK, Agarwal AK. Experimental investigation on the effect of intake air temperature and air–fuel ratio on cycle-to-cycle variations of HCCI combustion and performance parameters. Appl Energy. 2011;88:1153–63.CrossRefGoogle Scholar
  14. 14.
    Persson H, Agrell M, Olsson J-O, Johansson B, Ström H. The effect of intake temperature on HCCI operation using negative valve overlap. SAE technical paper; 2004.Google Scholar
  15. 15.
    Tsutsumi Y, Hoshina K, Iijima A, Shoji H. Analysis of the combustion characteristics of a HCCI engine operating on DME and methane. SAE technical paper; 2007.Google Scholar
  16. 16.
    Pochet M, Truedsson I, Foucher F, Jeanmart H, Contino F. Ammonia-hydrogen blends in homogeneous-charge compression–ignition engine. SAE technical paper; 2017.Google Scholar
  17. 17.
    Hosseini V, Neill WS, Checkel MD. Controlling n-heptane HCCI combustion with partial reforming: experimental results and modeling analysis. J Eng Gas Turbines Power. 2009;131:052801.CrossRefGoogle Scholar
  18. 18.
    Babajimopoulos A, Assanis DN, Fiveland SB. An approach for modeling the effects of gas exchange processes on HCCI combustion and its application in evaluating variable valve timing control strategies. SAE technical paper; 2002.Google Scholar
  19. 19.
    Milovanovic N, Chen R, Turner J. Influence of the variable valve timing strategy on the control of a homogeneous charge compression (HCCI) engine. SAE Technical Paper 2004-01-1899; 2004.
  20. 20.
    Ryan TW, Callahan TJ, Mehta D. HCCI in a variable compression ratio engine-effects of engine variables. SAE technical paper; 2004.Google Scholar
  21. 21.
    Olsson J-O, Tunestål P, Johansson B. Boosting for high load HCCI. SAE technical paper; 2004.Google Scholar
  22. 22.
    Yap D, Wyszynski M, Megaritis A, Xu H. Applying boosting to gasoline HCCI operation with residual gas trapping. SAE technical paper; 2005.Google Scholar
  23. 23.
    Koopmans L, Ström H, Lundgren S, Backlund O, Denbratt I. Demonstrating a SI-HCCI-SI mode change on a Volvo 5-cylinder electronic valve control engine. SAE technical paper; 2003.Google Scholar
  24. 24.
    Xu M, Gui Y, Deng K-Y. Fuel injection and EGR control strategy on smooth switching of CI/HCCI mode in a diesel engine. J Energy Inst. 2015;88:157–68.CrossRefGoogle Scholar
  25. 25.
    Semin RAB. A technical review of compressed natural gas as an alternative fuel for internal combustion engines. Am J Eng Appl Sci. 2008;1:302–11.CrossRefGoogle Scholar
  26. 26.
    Kozarac D, Taritas I, Vuilleumier D, Saxena S, Dibble RW. Experimental and numerical analysis of the performance and exhaust gas emissions of a biogas/n-heptane fueled HCCI engine. Energy. 2016;115:180–93.CrossRefGoogle Scholar
  27. 27.
    Wright S, Pinkelman A. Natural gas internal combustion engine hybrid passenger vehicle. Int J Energy Res. 2008;32:612–22.CrossRefGoogle Scholar
  28. 28.
    Abdollahzadeh Jamalabadi M. Effect of fuel inject angle on non-premixed combustion of air/methane mixtures in vertical cylinder. Int J Multidiscip Res Dev. 2014;1:1–4.Google Scholar
  29. 29.
    Yeh S. An empirical analysis on the adoption of alternative fuel vehicles: the case of natural gas vehicles. Energy Policy. 2007;35:5865–75.CrossRefGoogle Scholar
  30. 30.
    Kakaee A-H, Paykani A, Ghajar M. The influence of fuel composition on the combustion and emission characteristics of natural gas fueled engines. Renew Sustain Energy Rev. 2014;38:64–78.CrossRefGoogle Scholar
  31. 31.
    Papagiannakis R, Hountalas D. Combustion and exhaust emission characteristics of a dual fuel compression ignition engine operated with pilot diesel fuel and natural gas. Energy Convers Manag. 2004;45:2971–87.CrossRefGoogle Scholar
  32. 32.
    Reitz RD, Duraisamy G. Review of high efficiency and clean reactivity controlled compression ignition (RCCI) combustion in internal combustion engines. Prog Energy Combust Sci. 2015;46:12–71.CrossRefGoogle Scholar
  33. 33.
    Khandal S, Banapurmath N, Gaitonde V, Hiremath S. Paradigm shift from mechanical direct injection diesel engines to advanced injection strategies of diesel homogeneous charge compression ignition (HCCI) engines—a comprehensive review. Renew Sustain Energy Rev. 2017;70:369–84.CrossRefGoogle Scholar
  34. 34.
    Jin H, Ishida M. Reactivity study on natural-gas-fueled chemical-looping combustion by a fixed-bed reactor. Ind Eng Chem Res. 2002;41:4004–7.CrossRefGoogle Scholar
  35. 35.
    Yousefi A, Birouk M. Investigation of natural gas energy fraction and injection timing on the performance and emissions of a dual-fuel engine with pre-combustion chamber under low engine load. Appl Energy. 2017;189:492–505.CrossRefGoogle Scholar
  36. 36.
    Pandey S, Diwan P, Sahoo PK, Thipse SS. A review of combustion control strategies in diesel HCCI engines. Biofuels. 2018;9:61–74.CrossRefGoogle Scholar
  37. 37.
    Hosseini V, Checkel MD. Reformer gas application in combustion onset control of hcci engine. J Engine Res. 2009;14:1–23.Google Scholar
  38. 38.
    Martinez-Frias J, Aceves SM, Flowers D, Smith JR, Dibble R. HCCI engine control by thermal management. SAE technical paper; 2000.Google Scholar
  39. 39.
    Olsson J-O, Tunestål P, Johansson B, Fiveland S, Agama R, Willi M, et al. Compression ratio influence on maximum load of a natural gas fueled HCCI engine. SAE technical paper; 2002.Google Scholar
  40. 40.
    Tan EC, Talmadge M, Dutta A, Hensley J, Schaidle J, Biddy M, et al. Process design and economics for the conversion of lignocellulosic biomass to hydrocarbons via indirect liquefaction. Thermochemical research pathway to high-octane gasoline blendstock through methanol/dimethyl ether intermediates. NREL (National Renewable Energy Laboratory (NREL), Golden, CO (United States)); 2015.Google Scholar
  41. 41.
    Koponen K, Nylund N-O. IEA technology network cooperation: fuel and technology alternatives for buses: overall energy efficiency and emissions. SAE Int J Commer Veh. 2012;5:515–33.CrossRefGoogle Scholar
  42. 42.
    Konno M, Chen Z. Ignition mechanisms of HCCI combustion process fueled with methane/DME composite fuel. SAE technical paper; 2005.Google Scholar
  43. 43.
    Shibata G, Ogawa H. HCCI combustion control by DME-ethanol binary fuel and EGR. SAE technical paper; 2012.Google Scholar
  44. 44.
    Jang J, Lee Y, Cho C, Woo Y, Bae C. Improvement of DME HCCI engine combustion by direct injection and EGR. Fuel. 2013;113:617–24.CrossRefGoogle Scholar
  45. 45.
    Kong S-C. A study of natural gas/DME combustion in HCCI engines using CFD with detailed chemical kinetics. Fuel. 2007;86:1483–9.CrossRefGoogle Scholar
  46. 46.
    El-Din HA, Elkelawy M, Yu-Sheng Z. HCCI engines combustion of CNG fuel with DME and H2 additives. SAE technical paper; 2010.Google Scholar
  47. 47.
    Curran H, Fischer S, Dryer F. The reaction kinetics of dimethyl ether. II: low-temperature oxidation in flow reactors. Int J Chem Kinet. 2000;32:741–59.CrossRefGoogle Scholar
  48. 48.
    AVL FIRE User Manual, CFD-Solver_v2011_CFD-Solver.Google Scholar
  49. 49.
    Kuo K. Principles of combustion. London: Wiley; 1986.Google Scholar
  50. 50.
    Fiveland SB, Assanis DN. Development and validation of a quasi-dimensional model for HCCI engine performance and emissions studies under turbocharged conditions. SAE technical paper; 2002.Google Scholar
  51. 51.
    Yao M, Qin J. Simulating the homogeneous charge compression ignition process using a detailed kinetic model for dimethyl ether (DME) and methane dual fuel. SAE technical paper; 2004.Google Scholar

Copyright information

© Akadémiai Kiadó, Budapest, Hungary 2018

Authors and Affiliations

  • Hosein Ezoji
    • 1
  • Rouzbeh Shafaghat
    • 1
  • Omid Jahanian
    • 1
  1. 1.Babol Noshirvani University of TechnologyBabolIslamic Republic of Iran

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