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Cosmin Dumitrescu, Associate Professor
Department of Mechanical and Aerospace Engineering
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Publications

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Peer-Reviewed Journal Publications (Google Scholar)

  • Alvarez, L. F., Shaffer, J., Dumitrescu, C. E., and Askari, O. “Laminar burning velocity of Ammonia/Air mixtures at high pressures.” Fuel 363(1), p. 130986, 2024. DOI:https://doi.org/10.1016/j.fuel.2024.130986
  • Shaffer, J., Alvarez, L. F., Dumitrescu, C. E., and Askari, O. “Rotational and Vibrational Temperatures of Transient Atmospheric Glow Plasma.” Journal of Physics D: Applied Physics 57, p.335204, 2024. DOI:10.1088/1361-6463/ad4cf9
  • Ulishney, C. J., and Dumitrescu, C. E. “Optical investigation of methane, ethane, or propane and diesel at low load RCCI conditions.” Fuel355 (1), p. 129472, 2024. DOI:10.1016/j.fuel.2023.129472
  • Liu, J., Ulishney, C. J., and Dumitrescu, C. E. “Numerical Investigation of a Heavy-Duty Compression Ignition Engine Converted to Ammonia Spark-Ignition Operation.” Journal of Engineering for Gas Turbines and Power 145 (8), 2023. DOI:10.1115/1.4062418
  • Ulishney, C. J., and Dumitrescu, C. E. “Effect of gas composition on the performance and emissions of a dual-fuel diesel-natural gas engine at low load conditions.” Fuel 324 (1), p. 124531, 2022. DOI:10.1016/j.fuel.2022.124531
  • Liu, J., Ulishney, C. J., and Dumitrescu, C. E. “Optical and Numerical Investigation of Flame Propagation in a Heavy Duty Spark Ignited Natural Gas Engine with a Bowl-in-Piston Chamber.” Journal of Engineering for Gas Turbines and Power 144 (11), 2022. DOI:10.1115/1.4055454
  • Liu, J., Huang, Q., Ulishney, C., and Dumitrescu, C. E. “Comparison of Random Forest and Neural Network in Modelling the Performance and Emissions of a Natural Gas Spark Ignition Engine.” J Energy Res Technol 144 (March 2022), pp. 032310-032311, 2022. DOI:10.1115/1.4053301
  • Liu, J., Huang, Q., Ulishney, C., and Dumitrescu, C. E. “Machine learning assisted prediction of exhaust gas temperature of a heavy-duty natural gas spark ignition engine.” Applied Energy Vol. 300 (2021): p. 117413. DOI:10.1016/j.apenergy.2021.117413.
  • Liu, J., Ulishney, C. J., and Dumitrescu, C. E. “Effect of Spark Timing on the Combustion Stages Seen in a Heavy-Duty Compression-Ignition Engine Retrofitted to Natural Gas Spark-Ignition Operation.” SAE Int J Engines Vol. 14 No. 3 (2021): pp. 335-344. DOI:10.4271/03-14-03-0020.
  • Liu, J., Ulishney, C. J., and Dumitrescu, C. E. “Experimental investigation of a heavy-duty natural gas engine performance operated at stoichiometric and lean operations.” Energy Conversion and Management Vol. 243 No.  (2021): p. 114401. DOI:10.1016/j.enconman.2021.114401.
  • Liu, J., Ulishney, C., and Dumitrescu, C. E. “Random Forest Machine Learning Model for Predicting Combustion Feedback Information of a Natural Gas Spark Ignition Engine.” J Energy Res Technol Vol. 143 No. 1 (2021): p. 7. DOI:10.1115/1.4047761.
  • Lalsare, A. D., Leonard, B., Robinson, B., Sivri, A. C., Vukmanovich, R., Dumitrescu, C., Rogers, W., and Hu, J. “Self-regenerable carbon nanofiber supported Fe – Mo2C catalyst for CH4-CO2 assisted reforming of biomass to hydrogen rich syngas.” Applied Catalysis B: Environmental Vol. 282 (2021): p. 119537. DOI:10.1016/j.apcatb.2020.119537.
  • Huang, Q., Liu, J., Ulishney, C., and Dumitrescu, C. E. “On the use of artificial neural networks to model the performance and emissions of a heavy-duty natural gas spark ignition engine.” International Journal of Engine Research Vol. OnlineFirst (2021): p. 14680874211034409. DOI:10.1177/14680874211034409.
  • Liu, J., Ulishney, C., and Dumitrescu, C. “Characterization of Cycle-by-Cycle Variations of an Optically Accessible Heavy-Duty Diesel Engine Retrofitted to Natural Gas Spark Ignition.” SAE Technical Paper 2021-24-0045, 2021. DOI:10.4271/2021-24-0045.
  • Liu, J., Huang, Q., Ulishney, C., and Dumitrescu, C. “A Support-Vector Machine Model to Predict the Dynamic Performance of a Heavy-Duty Natural Gas Spark Ignition Engine.” SAE Technical Paper 2021-01-0529, 2021. DOI:10.4271/2021-01-0529.
  • Liu, J. and Dumitrescu, C. E. “Limitations of Natural Gas Lean Burn Spark Ignition Engines Derived From Compression Ignition Engines.” Journal of Energy Resources Technology Vol. 142(12): pp. 122309-122301, 2020. DOI:10.1115/1.40474
  • Liu, J., Ulishney, C., and Dumitrescu, C. E. “Characterizing Two-Stage Combustion Process in a Natural Gas Spark Ignition Engine Based on Multi-Wiebe Function Model.” Journal of Energy Resources Technology Vol. 142(10): pp. 102302 (8 pages), 2020. DOI:10.1115/1.4046793.
  • Liu, J. and Dumitrescu C. E., “Investigation of multistage combustion inside a heavy-duty natural-gas spark-ignition engine using 3D CFD simulations and the Wiebe-function combustion model.” Journal of Engineering for Gas Turbines and Power Vol. 142(10): pp. 101012 (7 pages), 2020. DOI:10.1115/1.4045869.
  • Lalsare, A., Sivri, A., Egan, R., Vukmanovich, R. J., Dumitrescu, C. E., and Hu, J. “Biomass – flare gas synergistic co-processing in the presence of carbon dioxide for the controlled production of syngas (H2:CO ∼ 2 – 2.5).” Chemical Engineering Journal Vol. 385(1): pp. 123783, 2020. DOI: 10.1016/j.cej.2019.123783.
  • Liu, J. and Dumitrescu, C.E., “Improved thermodynamic model for lean natural-gas spark-ignition in a diesel engine using a triple-Wiebe function.” Journal of Energy Resources Technology Vol. 142(6): pp. 062303 (7 pages), 2020. DOI:10.1115/1.4045534.
  • Liu, J. and Dumitrescu, C.E., “Methodology to Determine the Fast Burn Period Inside a Heavy-Duty Diesel Engine Converted to Natural Gas Lean-Burn Spark Ignition Operation.” Journal of Advances and Current Practices in Mobility Vol. 2(1): pp. 346-356, 2020. DOI:10.4271/2019-01-2220.
  • Liu, J. and Dumitrescu, C.E., “Multiple Combustion Stages inside a Heavy-Duty Diesel Engine Retrofitted to Natural-Gas Spark-Ignition Operation.” Journal of Engineering for Gas Turbines and Power Vol. 142(2), pp. 021018, 2020. DOI:10.1115/1.4044492.
  • Lalsare, A., Wang, Y., Li, Q., Sivri, A., Vukmanovich, R. J., Dumitrescu, C. E., and Hu, J. “Hydrogen-Rich Syngas Production through Synergistic Methane-Activated Catalytic Biomass Gasification.” ACS Sustainable Chemistry & Engineering, Vol. 7(19), pp.16060-16071, 2019. DOI:10.1021/acssuschemeng.9b02663.

  • Liu, J., and Dumitrescu, C.E., “Analysis of Two-Stage Natural-Gas Lean Combustion inside a Diesel Geometry,” Applied Thermal Engineering, Vol. 160, pp. 114116,2019, https://doi.org/10.1016/j.applthermaleng.2019.114116
  • Liu, J., and Dumitrescu, C.E., “Methodology to Separate the Two Burn Stages of Natural-Gas Lean Premixed-Combustion inside a Diesel Geometry,” Energy Conversion and Management, Vol. 195, pp. 21-31, 2019, https://doi.org/10.1016/j.enconman.2019.04.091
  • Liu, J., and Dumitrescu, C.E., “Single and double Wiebe function combustion model for a heavy-duty diesel engine retrofitted to natural-gas spark-ignition,”Applied EnergyVol. 248, pp. 95-103, 2019. DOI:10.1016/j.apenergy.2019.04.098
  • Liu, J., and Dumitrescu, C.E., “Numerical Investigation of Methane Number and Wobbe Index Effects in Lean-Burn Natural Gas Spark-Ignition Combustion.” Energy & FuelsVol. 33(5), pp. 4564-4574, 2019. DOI:10.1021/acs.energyfuels.8b04463.
  • Liu, J., and Dumitrescu, C.E.,“Lean-Burn Characteristics of a Heavy-Duty Diesel Engine Retrofitted to Natural-Gas Spark Ignition.” Journal of Engineering for Gas Turbines and PowerVol. 141(7), pp. 071013-071013-11, 2019. DOI:10.1115/1.4042501
  • Liu, J., and Dumitrescu, C.E., “Combustion Partitioning Inside a Natural Gas Spark Ignition Engine with a Bowl-in-Piston Geometry,” Energy Conversion and Management, Vol. 183, pp. 73-83, 2019, https://doi.org/10.1016/j.enconman.2018.12.118
  • Liu, J., and Dumitrescu C.E.“Numerical Simulation of Re-Entrant Bowl Effects on Natural Gas SI Operation.” Journal of Engineering for Gas Turbines and Power, Vol. 141(6), pp. 061023-061023-10, 2019.
  • Liu, J., Bommisetty, H., and Dumitrescu C.E.“Experimental Investigation of a Heavy-Duty CI Engine Retrofitted to Natural Gas SI Operation.” Journal of Energy Resources Technology, Vol. 141(11), pp. 112207-112207-12, 2019.
  • Stocchi, I., Liu, J., Dumitrescu, C.E., Battistoni, M., and Grimaldi, C. N. “Effect of Piston Crevices on 3D Simulation of a Heavy-Duty Diesel Engine Retrofitted to Natural Gas Spark Ignition.” Journal of Energy Resources Technology, Vol. 141(11), pp. 112204-112204-8, 2019.
  • Liu, J., and Dumitrescu, C.E., “Optical analysis of flame inception and propagation in a lean-burn natural-gas spark-ignition engine with a bowl-in-piston geometry,” International Journal of Engine Research, pp.1468087418822852, 2019, https://doi.org/10.1177/1468087418822852.
  • Liu, J., and Dumitrescu, C.E., “Flame development analysis in a diesel optical engine converted to spark ignition natural gas operation,” Applied Energy, Vol. 230, pp. 1205-1217, 2018, DOI: 10.1016/j.apenergy.2018.09.059.
  • Liu, J., and Dumitrescu, C.E., “3D CFD simulation of a CI engine converted to SI natural gas operation using the G-equation”, Fuel, Vol. 232, pp. 833-844, 2018. DOI: 10.1016/j.fuel.2018.05.159.
  • Dumitrescu, C.E., Padmanaban, V., and Liu J, “An Experimental Investigation of Early Flame Development in an Optical SI Engine Fueled with Natural Gas,” Journal of Engineering for Gas Turbines and Power, Vol. 140, pp. 082802-082809, 2018, DOI: 10.1115/1.4039616.
  • Dumitrescu, C.E., Cheng, A., Kurtz, E., and Mueller, C.J., "A Comparison of Methyl Decanoate and Tripropylene Glycol Monomethyl Ether for Soot-Free Combustion in an Optical Direct-Injection Diesel Engine," Journal of Energy Resources Technology, Vol. 139(4), pp. 042210, 2017.
  • Dumitrescu, C.E., Mueller, C.J., and Kurtz, E., "Investigation of a Tripropylene-Glycol Monomethyl Ether and Diesel Blend for Soot-Free Combustion in an Optical Direct-Injection Diesel Engine," Applied Thermal Engineering, Vol. 101, pp. 639-646, 2016.
  • Gehmlich, R.K., Dumitrescu, C.E., Wang, Y., and Mueller, C.J., "Leaner Lifted-Flame Combustion Enabled by the Use of an Oxygenated Fuel in an Optical CI Engine," SAE International Journal of Engines, Vol. 9(3), pp. 1526-1543, 2016.
  • Dumitrescu, C.E., Polonowski, C.J., Fisher, B., Lilik, G., Mueller, C.J., “Diesel Fuel Property Effects on In-Cylinder Liquid Penetration Length: Impact on Smoke Emissions and Equivalence Ratio Estimates at the Flame Lift-Off Length”, Energy & Fuels, 29 (11), 2015, pp.7689-7704
  • Lilik, G., Dumitrescu, C.E., Mueller, C.J., Gehrke, C.R., “The Visualization of Soot Late in the Diesel Combustion Process by Laser Induced Incandescence with a Vertical Laser Sheet”, SAE International Journal of Engines8(2):716-734, 2015, https://doi.org/10.4271/2015-01-0801.
  • Cheng, A.S., Dumitrescu, C.E., and Mueller, C.J., “Investigation of Methyl Decanoate Combustion in an Optical Direct-Injection Diesel Engine”, Energy & Fuels, 28 (12), 2014, pp. 7689-7700
  • Dumitrescu, C.E., Polonowski, C., Fisher, B., Cheng, A.S., Lilik, G., Mueller, C.J., “An Experimental Study of Fuel-Property Effects on Mixing-Controlled Combustion in a Heavy-Duty Optical Diesel Engine”,SAE International Journal of Fuels and Lubricants7(1), pp.65-81, 2014.
  • Dumitrescu, C.E., Puzinauskas, P.V., “Fiber Delivered Excitation for Laser Induced Incandescence Measurements in Ethylene Premixed Flame”, Trends in Applied Spectroscopy, Vol.10, pp.83-92, 2013
  • Dumitrescu, C.E., Neill, W.S., Guo, H., Hosseini, V. and Chippior, W.L., “Fuel Property Effects on PCCI Combustion in a Heavy-Duty Diesel Engine, ASME Journal of Engineering for Gas Turbines and Power, Vol. 134(5), pp.052801-1, 2012
  • Dumitrescu, C.E., Guo, H., Hosseini, V., Neill, W.S., Chippior, W.L., Connolly, T., Graham, L., Li, H., “The Effect of Iso-Octane Addition on Combustion and Emission Characteristics of a HCCI Engine Fueled with N-Heptane”, ASME Journal of Engineering for Gas Turbines and Power, Vol. 133(11), pp.112801-7, 2011
  • Guo, H., Hosseini, V., Neill, W.S., Chippior, W.L. and Dumitrescu, C.E.“An Experimental Study on the Effect of Hydrogen Enrichment on Diesel Fueled HCCI Combustion”, International Journal of Hydrogen Energy, Vol.36(21), pp.13820-13830, 2011
  • Joshi, S., El-Rabii, H., Dumitrescu, C.E., Puzinauskas, P.V., Yalin, A.P., “Temperature and Electron Density Measurements of Laser Induced Plasmas in Air at Elevated Pressures”, Spectroscopy Letters, Vol. 44, No 2, pp. 103-112, 2011.
  • Dumitrescu, C.E., Puzinauskas, P.V., Agrawal, A.K., Liu, H., Daly, D.T., “A Computational Study of a Fast Sampling Valve Designed to Sample Soot Precursors inside a Forming Diesel Spray Plume”, Applied Thermal Engineering, Vol. 29 No. 5-6, 2009.
  • Joshi, S., Olsen, D.B., Dumitrescu, C.E., Puzinauskas, P.V., Yalin, A.P, “Laser Induced Breakdown Spectroscopy for In-Cylinder Equivalence Ratio Measurements in Laser Ignited Natural Gas Engines”, Applied Spectroscopy, Vol 63, No 5, pp. 549-554, 2009.
  • Dumitrescu, C.E., Puzinauskas, P.V., Olcmen, S., “Moveable Fiber Probe for Gas-Phase Laser Induced Breakdown Spectroscopy”, Applied Optics, Vol. 47, No. 31, pp. G88-G98, 2008
  • Dumitrescu, C.E., Puzinauskas, P.V., Buckley, S.G., Joshi, S., Yalin, A., Olcmen, S., “Fiber-Optic Spark Delivery for Gas-Phase Laser Induced Breakdown Spectroscopy”, Applied Spectroscopy, Vol. 61, No. 12, 2007
Peer-Reviewed Conference Publications

  • Alvarez, L. F., Askari, O., and Dumitrescu, C. E. “Effect of Blending Ammonia with Natural Gas Hydrocarbons on the Performance of a Heavy-Duty Spark Ignition Engine.” Proc. ASME 2024 Internal Combustion Engine Division Fall Technical Conference. Paper # ICEF2024-140567. San Antonio, TX, October 20-23, 2024.
  • Alvarez, L., and Dumitrescu, C., "Experimental Study of Ammonia Combustion in a Heavy-Duty Diesel Engine Converted to Spark Ignition Operation," SAE Technical Paper 2024-01-2371, 2024, https://doi.org/10.4271/2024-01-2371.
  • Ulishney, C., and Dumitrescu, C. E. “Effect of Gas Composition on the Oxidation of Gas Component Emissions of a Dual-Fuel Diesel-Natural Gas Engine at Low Load Conditions.” Proc. ASME 2023 Internal Combustion Engine Division Fall Technical Conference. Paper # ICEF2023-109624. Pittsburgh, PA, October 8-11, 2023.
  • Alvarez, L. F., Schaffer, J., Dumitrescu, C. E., and Askari, O. “Investigation of NH3/Air Laminar Burning Speed and Flame Structure at High Pressures.” Proc. ASME 2023 International Mechanical Engineering Congress and Exposition. Paper # IMECE2023-112269. New Orleans, LA, USA, October 29-November 2, 2023.
  • Liu, J., Ulishney, C., and Dumitrescu, C. E. “Numerical Investigation of a Heavy-Duty Compression Ignition Engine Converted to Ammonia Spark Ignition Operation.” Proc. ASME 2022 ICE Forward Conference. Paper # ICEF2022-88071. Indianapolis, IN, October 16-19, 2022.

  • Liu, J., Dumitrescu, C., and Ulishney, C. “Investigation of Heat Transfer Characteristics of Heavy-Duty Spark Ignition Natural Gas Engines Using Machine Learning.” SAE WCX Digital Summit, April 5-7, 2022, Detroit, Michigan, USA, SAE Technical Paper 2022-01-0473, 2022.

  • Liu, J., Dumitrescu, C., and Ulishney, C. “Investigation of Heat Transfer Characteristics of Heavy-Duty Spark Ignition Natural Gas Engines Using Machine Learning.” SAE Technical Paper 2022-01-0473, p. 12, 2022. DOI:10.4271/2022-01-0473
  • Liu, J., Ulishney, C., and Dumitrescu, C. E. “Optical and Numerical Investigations of Flame Propagation in a Heavy Duty Spark Ignited Natural Gas Engine.” Proceedings of the ASME 2021 Internal Combustion Engine Division Fall Technical Conference October 13-15, 2021. Virtual Conference, Online. Paper # ICEF2021-67489, 2021
  • Liu, J., Ulishney, C., and Dumitrescu, C. “Characterization of Cycle-by-Cycle Variations of an Optically Accessible Heavy-Duty Diesel Engine Retrofitted to Natural Gas Spark Ignition.” 15th International Conference on Engines & Vehicles, September 12-15, 2021, Capri, Italy. Paper # 2021-24-0045, 2021.
  • Liu, J., Huang, Q., Ulishney, C., and Dumitrescu, C. “A Support-Vector Machine Model to Predict the Dynamic Performance of a Heavy-Duty Natural Gas Spark Ignition Engine.” SAE WCX Digital Summit, April 13-15, 2021, Detroit, Michigan, USA, SAE Technical Paper 2021-01-0529, 2021.
  • Liu, J., Ulishney, C., and Dumitrescu, C. E. “Comparative Performance of Machine Learning Algorithms in Predicting Nitrogen Oxides Emissions of a Heavy Duty Natural Gas Spark Ignition Engine.” Proc. 13th International Conference on Applied Energy (ICAE2021), Bangkok, Thailand (Virtual), Nov 29 - Dec 2, 2021. Paper # Paper ID: 71. 
  • Liu, J., and Dumitrescu, C.E., “Development of a Heavy-Duty Natural-Gas Spark-Ignition Engine Test Bench,” Proceedings of the ASME IMECE2019, November 11-14, 2019, Salt Lake City, Utah, USA, Paper IMECE2019-10728, 2019.
  • Padmanaban, V., Liu, J. and Dumitrescu, C.E., “Experimental Setup of Combustion Visualization Inside a Heavy-Duty Diesel Engine Converted to Natural-Gas Spark Ignition Operation,” Proceedings of the ASME IMECE2019, November 11-14, 2019, Salt Lake City, Utah, USA, Paper IMECE2019-10735, 2019.
  • Gasbarro, L., Liu, J., Ulishney, C., Ambrogi, L., Battistoni, M., and Dumitrescu, C.E., “Development of the Control and Acquisition System for A Natural-Gas Spark-Ignition Engine Test Bench,” Proceedings of the ASME IMECE2019, November 11-14, 2019, Salt Lake City, Utah, USA, Paper IMECE2019-11485, 2019.
  • Liu, J., Dumitrescu, C.E., and Bommisetty, H.,“An Experimental Study of the Combustion Process in a Natural-Gas Spark-Ignition Engine,” Proceedings of the ASME IMECE2019, November 11-14, 2019, Salt Lake City, Utah, USA, Paper IMECE2019-11637, 2019.
  • Liu, J., and Dumitrescu, C.E., “Two-Stage Lean-Burn Combustion Inside a Natural-Gas Spark-Ignition Engine with a Bowl-in-Piston Chamber,” Proceedings of the ASME ICEF2019, October 20-23, 2019, Chicago, IL, USA, Paper ICEF2019-7181, 2019.
  • Liu, J., Ulishney, C., and Dumitrescu, C.E., “Twin-Peak Heat Release Phenomena Inside a Heavy-Duty Diesel Engine Retrofitted to Natural-Gas Spark Ignition,” Proceedings of the ASME ICEF2019, October 20-23, 2019, Chicago, IL, USA, Paper ICEF2019-7182, 2019.
  • Liu, J. and Dumitrescu, C.E., “Observation of Flame Propagation in a Heavy-Duty Natural-Gas Lean Burn Spark-Ignition Engine,” Proceedings of the ASME ICEF2019, October 20-23, 2019, Chicago, IL, USA, Paper ICEF2019-7184, 2019.
  • Ambrogi, L., Liu, J., Battistoni, M., Dumitrescu, C.E., and Gasbarro, L., “Effect of Methane Number in a Diesel Engine Converted to Natural Gas Spark Ignition.” 14th International Conference on Engines & Vehicles, SAE Technical Paper 2019-24-0008, Capri, Italy, Sep 16-19, 2019.
  • Gasbarro, L., Liu, J., Dumitrescu, C.E., Battistoni, M., Ulishney, C., and Ambrogi, L., “Heavy-Duty Compression-Ignition Engines Retrofitted to Spark-Ignition Operation Fueled with Natural Gas,” 14th International Conference on Engines & Vehicles, SAE Technical Paper 2019-24-0030, Capri, Italy, Sep 16-19, 2019.
  • Liu, J., and Dumitrescu, C.E., “Experimental Investigation of Combustion Characteristics in a Heavy-Duty Compression-Ignition Engine Retrofitted to Natural-Gas Spark-Ignition Operation,” 14th International Conference on Engines & Vehicles, SAE Technical Paper 2019-24-0124, Capri, Italy, Sep 16-19, 2019.
  • Liu, J., and Dumitrescu, C.E., “Methodology to Determine the Fast Burn Period Inside a Heavy-Duty Diesel Engine Converted to Natural Gas Lean-Burn Spark Ignition Operation," JSAE/SAE  2019 International Powertrains, Fuels & Lubricants Meeting, August 26-29, 2019, Kyoto, Japan, Paper JSAE 20199096/2019-01-2220, 2019
  • Liu, J., Dumitrescu, C.E., and Bommisetty, H., “Specifics of the Combustion Phenomenon Inside a Heavy-Duty Diesel Engine Converted to Natural Gas Lean-Burn Spark Ignition Operation," JSAE/SAE  2019 International Powertrains, Fuels & Lubricants Meeting, August 26-29, 2019, Kyoto, Japan, Paper JSAE 20199097/2019-01-2221, 2019.
  • Ulishney, C., Liu, J., Dumitrescu, C.E., and Sivri, A., “Effect of Bowl-in-Piston Chamber on the Combustion Process in a Stoichiometric Natural-Gas Spark-Ignition Engine,” 2019 International Conference on Applied Energy, Paper 343, Aug 12-15, 2019, Västerås, Sweden, 2019.
  • Liu, J., and Dumitrescu, C.E., “Experimental Investigation of a Natural Gas Lean-Burn Spark Ignition Engine with Bowl-in-Piston Combustion Chamber," WCX SAE World Congress Experience, April 9-11, 2019, Detroit, Michigan, USA, SAE Technical Paper 2019-01-0559, 2019.
  • Liu, J., and Dumitrescu, C.E., “CFD Simulation of Metal or Optical Configuration of a Heavy-Duty CI Engine Converted to SI Natural Gas. Part 1: Combustion Behavior," SAE International Powertrains, Fuels & Lubricants Meeting, Jan 22-24, 2019, San Antonio, TX, USA, Technical Paper 2019-01-0002
  • Liu, J., and Dumitrescu, C.E., “CFD Simulation of Metal and Optical Configuration of a Heavy-Duty CI Engine Converted to SI Natural Gas. Part 2: In-Cylinder Flow and Emissions," SAE International Powertrains, Fuels & Lubricants Meeting, Jan 22-24, 2019, San Antonio, TX, USA, Technical Paper 2019-01-0003
  • Liu, J., Bommisetty, H., and Dumitrescu, C.E., “Experimental Investigation of a Heavy-Duty CI Engine Retrofitted to Natural Gas SI Operation,” Proceedings of the ASME ICEF2018, San Diego, CA, Nov 4-7, 2018, Paper ICEF2018-9611, 2018.
  • Liu, J., and Dumitrescu, C.E., “Numerical Simulation of Re-Entrant Bowl Effects on Natural Gas SI Operation,” Proceedings of the ASME ICEF2018, San Diego, CA, Nov 4-7, 2018, Paper ICEF2018-9609, 2018.
  • Stocchi, I., Liu, J., Dumitrescu, C.E., Battistoni, M., and Grimaldi, C.N., “Effect of Piston Crevices on 3D Simulation of a Heavy-Duty Diesel Engine Retrofitted to Natural Gas Spark Ignition,” Proceedings of the ASME IMECE2018, Pittsburgh, PA, Nov 9-15, 2018, Paper IMECE2018-87783, 2018.
  • Liu, J., and Dumitrescu, C.E., “Lean-Burn Characteristics of a Heavy-Duty Diesel Engine Retrofitted to Natural Gas Spark Ignition,” Proceedings of the ASME IMECE2018, Pittsburgh, PA, Nov 9-15, 2018, Paper IMECE2018-87761, 2018.
  • Bommisetty, H., Liu, J., Kooragayala, R., and Dumitrescu, C.E., “Fuel Composition Effects in a CI Engine Converted to SI Natural Gas Operation," SAE Technical Paper 2018-01-1137, 2018, DOI: 10.4271/2018-01-1137.
  • Liu, J., Szybist, J., and Dumitrescu, C.E., “Choice of Tuning Parameters on 3D SI IC Engine Simulations," SAE Technical Paper 2018-01-01832018, DOI: 10.4271/2018-01-0183.
  • Dumitrescu, C.E., Liu, J., and Padmanaban, V., "An Experimental Investigation of Early Flame Development in an Optical SI Engine Fueled with Natural Gas," Proceedings of the ASME ICEF2017, Seattle, WA, Oct 15-18, 2017, Paper ICEF2017-3525.
  • Dumitrescu C.E., E., Cheng, A., Kurtz, E., and Mueller, C.J., "A Comparison of Methyl Decanoate and Tripropylene Glycol Monomethyl Ether for Soot-Free Combustion in an Optical Direct-Injection Diesel Engine," Proceedings of the ASME ICEF2016, Greensville, SC, Oct 9-12, 2016, Paper ICEF2016-9366.
  • Dumitrescu, C.E., Kurtz, E., Mueller, C.J., “Investigation of Tripropylene-Glycol Monomethyl Ether and Diesel Blend for Soot-Free Combustion in an Optical Direct-Injection Diesel Engine”, Proceedings of the ASME-ATI-UIT 2015 Conference on Thermal Energy Systems: Production, Storage, Utilization and the Environment, May 17-20, 2015, Naples, Italy, Paper #66.
  • Hosseini, V., Neill, W.S., Guo, H., Dumitrescu, C.E., Chippior, W., Fairbridge, C., and Mitchell, K., “Effects of Cetane Number, Aromatic Content and 90% Distillation Temperature on HCCI Combustion of Diesel Fuels”, presented at the SAE 2010 Powertrains Fuels & Lubricants Meeting, October 25-27, 2010, San Diego, CA and published as SAE Technical Paper 2010-01-2168, 2010
  • Dumitrescu, C.E., Neill, W.S., Guo, H., Hosseini, V., and Chippior, W.L. “Fuel Property Effects on PCCI Combustion in a Heavy-Duty Diesel Engine”, presented at and published in the Proceedings of the ASME 2010 Internal Combustion Engine Division Fall Technical Conference ICEF2010, September 12-15, 2010, San Antonio, TX, Paper ICEF2010-35194
  • Joshi, S., Yalin, A.P., D’Angola, A., Colonna, G., Dumitrescu, C.E., Puzinauskas, P.V., El-Rabii, H., “A Time Resolved Spectroscopic Study of Laser Generated Plasmas in Air at High Pressures” (AIAA2010-4309), presented at and published in the Proceedings of American Institute of Aeronautics and Astronautics 41st Plasmadynamics and Lasers Conference, Chicago, Illinois, June 28-July 01, 2010, Paper AIAA2010-4309
  • Dumitrescu, C.E., and Puzinauskas, P.V., “Hollow Core Fiber Laser-Induced Incandescence Measurements in Ethylene Premixed Flames”, presented at the 32nd International Symposium on Combustion, Montreal, Aug 3-8, 2008, Poster W4P069
  • Sealy, M.P., Guo, Y.B., Dumitrescu, C.E., Puzinauskas, P.V., and Chen, S.C., “Laser direct-write micro dents using laser shock peening: Experimental study and numerical simulations”, presented at and published in the Proceedings of ASME 2ndIntegration & Commercialization of Micro & Nanosystems International Conference & Exhibition, MicroNano 2008, Kowloon, Hong Kong, June 3-5, 2008, pp. 635-639
  • Dumitrescu, C.E., Puzinauskas, P.V., Agrawal, A.K., Liu, H. and Daly, D.T. “A computational study of a fast sampling valve designed to sample soot precursors inside a forming diesel spray plume”, presented at and published in the Proceedings of 5thUS Combustion Meeting, San Diego, CA, March 2007, Paper D30