Sage Kokjohn

Assistant Professor

Room: Room 111
Engineering Research Building
1500 Engineering Dr.
Madison, WI 53706

Ph: (608) 263-1610
Fax: (608) 263-9870
kokjohn@wisc.edu

Primary Affiliation:
Mechanical Engineering

Additional Affiliations:
Engine Research Center


Education

  • PhD 2012, University of Wisconsin-Madison
  • MS 2008, University of Wisconsin-Madison
  • BS 2006, Iowa State University

Education

  • PhD 2012, University of Wisconsin-Madison
  • MS 2008, University of Wisconsin-Madison
  • BS 2006, Iowa State University

Research Interests

  • High efficiency energy conversion
  • Thermodynamics and fluid mechanics
  • Turbulent combustion modelling

Publications

  1. Kokjohn, S.L. and Reitz, R.D. \"A Computational Investigation of Two-stage Combustion in a Light-Duty Engine,\" SAE Int. J. Engines 1(1):1083-1104, 2008.
  2. Kokjohn, S.L., Swor, T.A., Andrie, M.J., and Reitz, R.D., \"Experiments and Modeling of Adaptive Injection Strategies (AIS) in Low Emissions Diesel Engines,\" SAE Int. J. Engines, 2(1):16-32, 2009.
  3. Kokjohn, S.L., Hanson, R.M., Splitter, D.A., and Reitz, R.D., \"Experiments and Modeling of Dual Fuel HCCI and PCCI Combustion Using In-Cylinder Fuel Blending,\" SAE Int. J. Engines, 2(2):24-39, 2009.
  4. Hanson, R.M., Reitz, R.D., Splitter, D.A., and Kokjohn, S.L., \"An Experimental Investigation of Fuel Reactivity Controlled PCCI Combustion in a Heavy-Duty Engine,\" SAE Int. J. Engines, 3(1):700-716, 2010.
  5. Splitter, D.A., Hanson, R.M., Kokjohn, S.L., Rein, K., Sanders, S., and Reitz, R.D., \"An Optical Investigation of Ignition Processes in Fuel Reactivity Controlled PCCI Combustion,\" SAE Int. J. Engines 3(1):142-162, 2010.
  6. Kokjohn, S.L., and Reitz, R.D., \"An Investigation of Charge Preparation Strategies for Controlled PPCI Combustion using a Variable Pressure Injection System,\" International Journal of Engine Research, 11(4):257-282, 2010.
  7. Bergin, M., Musu, E., Kokjohn, S.L., and Reitz, R.D., \"Examination of Initialization and Geometric Details on the Results of CFD Simulations of Diesel Engines,\" ASME J. Eng. Gas Turbines Power, 133 (4), 2011.
  8. Kokjohn, S.L., Hanson, R.M., Splitter, D.A., Kaddatz, J., and Reitz, R.D., \"Fuel Reactivity Controlled Compression Ignition (RCCI) Combustion in Light- and Heavy-duty Engines,\" SAE Int. J. Engines 4(1):360-374, 2011.
  9. Hanson, R.M., Kokjohn, S.L., Splitter, D.A., and Reitz, R.D., \"Fuel Effects on Reactivity Controlled Compression Ignition (RCCI) Combustion at Low Load,\" SAE Int. J. Engines 4(1):394-411, 2011.
  10. Puduppakkam, K.V., Kokjohn, S.L., Liang, L., Naik, C.V., Reitz, R.D., and Meeks, E., \"Use of Detailed Kinetics and Advanced Chemistry-Solution Techniques in CFD to Investigate Dual-Fuel Engine Concepts,\" SAE Int. J. Engines 4(1):1127-1149, 2011.
  11. Kokjohn, S.L., Hanson, R.M., Splitter, D.A., and Reitz, R.D., \"Fuel Reactivity Controlled Compression Ignition (RCCI): A Pathway to Controlled High-Efficiency Clean Combustion,\" International Journal of Engine Research, 12(3):209-226, 2011.
  12. Kokjohn, S.L., and Reitz, R.D., \"Investigation of the Roles of Flame Propagation, Turbulent Mixing, and Volumetric Heat Release in Conventional and Low Temperature Diesel Combustion,\" ASME J. Eng. Gas Turbines Power, 133(10), 2011.
  13. Kokjohn, S.L., Splitter, D.A., Hanson, R.M., Reitz, R.D., Manente, V. and Johansson, B., \"Modeling Charge Preparation and Combustion in Diesel Fuel, Ethanol, and Dual Fuel PCCI Engines,\" Atomization and Sprays, 21(2):107-119, 2011.
  14. Kokjohn, S.L., Reitz, R.D., Splitter, D.A., and Musculus, M.P.B., \"Investigation of Fuel Reactivity Stratification for Controlling PCI Heat-Release Rates Using High-Speed Chemiluminescence Imaging and Fuel Tracer Fluorescence,\" SAE Int. J. Engines 5(2):248-269, 2012.
  15. Hanson, R.M., Curran, S., Wagner, R., Kokjohn, S.L., Splitter, D.A., and Reitz, R.D., \"Piston Bowl Optimization for RCCI Combustion in a Light-Duty Multi-Cylinder Engine,\" SAE Int. J. Engines 5(2):286-299, 2012.
  16. Kokjohn, S.L. and Reitz, R.D., \"RCCI and Conventional Diesel Combustion: A Comparison of Methods to Meet Light-Duty NOx and Fuel Economy Targets,\" International Journal of Engine Research, (in press) 2013.

Links

Memberships

  • Society of Automotive Engineers
  • American Society of Mechanical Engineers
  • Institute for Liquid Atomization and Spray Systems

Courses

Summer 2014

  • ME 491 - Mechanical Engineering Projects I

  • ME 361 - Thermodynamics
  • ME 890 - PhD Research and Thesis
  • ME 790 - Master\'s Research and Thesis
  • ME 699 - Advanced Independent Study
  • ME 469 - Internal Combustion Engines
  • ME 790 - Master\'s Research and Thesis
  • ME 699 - Advanced Independent Study
  • ME 990 - Dissertator Research and Thesis
  • ME 890 - PhD Research and Thesis
  • ME 491 - Mechanical Engineering Projects I

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