Educational Background

  • Ph.D. in Mechanical Engineering, University of Wisconsin-Madison, 2005
  • M.S. in Thermal Engineering, Indian Institute of Technology-Delhi, 1998
  • B.S. in Mechanical Engineering, National Institute of Technology-Kurukshetra, 1996

Research Interests

  • artificial intelligence utilizing engineering knowledge
  • data driven modeling methods
  • internal combustion engines
  • particulate pollution and control
  • dynamic and pulsating flows
  • thermodynamics

Courses

  • Thermodynamics
  • Fluid Dynamics
  • Measurements
  • Senior Design
  • System Dynamics
  • Emission Control
  • Artificial Intelligence for Engineering Systems

Previous Work Experience

  • Maruti-Suzuki Motor Corporation: Feb. 1997-May 2000, Automotive Engineering: Carburetors and Manual Transmissions
  • Cummins Research and Technology: Feb. 2005-July 2009, Automotive Emission and Fuel Efficiency Research

Selected Publications

Journal Publications

Brahma, I., Schmidt, J., Confair, R., Kurtz, J., Rafter, I., Stryker, P., and Johnson, D.(2014). "An Investigation into the Accuracy of Orifice Based Flow Estimates for Pulsating Compressible Flows," SAE Int. J. Engines, 7(1): pp. 313-322, doi:10.4271/2014-01-1154.

Brahma I. (2014). "Analysis and prediction of transient opacity spikes using dimensional modeling", International Journal of Engine Research, 15(3): pp. 263-81.

Brahma, I. (2013). "A decision-tree-based approach to smoke spike detection in a heavy-duty diesel engine", Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering, 227(8): pp. 1112-1129

Brahma, I. (2012). "Reduction of Transient Particulate Matter Spikes with Decision Tree Based Control", SAE International Journal of Engines, 5(2): pp. 608-621; doi:10.4271/2012-01-0721

Brahma, I., & Chi, J. N. (2012). "Development of a model-based transient calibration process for diesel engine electronic control module tables–Part 2: Modeling and optimization", International Journal of Engine Research, 13(2): pp. 147-168

Brahma, I., & Chi, J. N. (2012). "Development of a model-based transient calibration process for diesel engine electronic control module tables–Part 1: data requirements, processing, and analysis", International Journal of Engine Research, 13(1): pp. 77-96

Brahma, I. (2011). "Development of Dynamic Constraint Models for a Model Based Transient Calibration Process", SAE International Journal of Engines, 4(1), pp. 813-827

Brahma, I., Sharp, M.C., and Frazier, T.R. (2009). "Empirical Modeling of Transient Emissions and Transient Response for Transient Optimization", SAE International Journal of Engines, 2(1), pp. 1433-1443

Brahma, I., Sharp, M.C., Richter, I.B., and Frazier, T.R. (2008). "Development of the Nearest Neighbor Multivariate Localized Regression Modeling Technique for Steady State Engine Calibration and Comparison With Neural Networks and Global Regression", International Journal of Engine Research, Volume 9, Number 4, 2008, pp. 297-323(27), 2008

Brahma, I., and Rutland, C.J., "Optimization of Diesel Engine Operating Parameters Using Neural Networks" (2004). SAE Journal of fuels and Lubricants, Vol. 112, No. 4, pp. 2521-2529

Peer-Reviewed Conference Proceedings

Brahma, I. (2013, April). "Transient Smoke Reduction Using a Hybrid Combination of Dimensional and Empirical Modeling," SAE Technical Paper 2013-01-0348, 2013, doi:10.4271/2013-01-0348, SAE World Congress April 2013, Detroit MI

Brahma, I. (2012, October). "Reduction of Particulate Matter Spikes with Decision Tree Based Control", Conference proceedings of the Department of Energy-Directions in Engine-Efficiency and Emissions Research (DEER) Conference, October 16-19, 2012, Dearborn, Michigan

Brahma, I. (2012, October). "Next Generation Calibration Modeling with Dimensional Modeling", Poster Presentation at the Department of Energy-Directions in Engine-Efficiency and Emissions Research (DEER) Conference, October 16-19, 2012, Dearborn, Michigan

Brahma, I. (2012, September).  "A non-parametric modeling method of estimating engine emissions for control or calibration purposes", 2nd U.S. Conference: Design of Experiments (DoE) in Vehicle and Engine Development, Sept 2012, Plymouth MI, USA

Tanner, M., Stryker, P., and Brahma, I. (2012, September). "Assessment of the feasibility of biodiesel blends for small commercial engines" Proceedings of the ASME 2012 Internal Combustion Engine Division Fall Technical Conference ICEF2012, Sept 2012, Vancouver BC, Canada

Brahma, I. (2012, April). "Reduction of Transient Particulate Matter Spikes with Decision Tree Based Control", SAE Paper 2012-01-0721, SAE World Congress April 2012, Detroit MI

Brahma, I. (2011, October).  "An Investigation into the Causes of Transient Particulate Matter Spikes in Production Diesel Engines, Proceedings of the ASME 2011 Internal Combustion Engine Division Fall Technical Conference ICEF2011, October 2-5, 2011, Morgantown, West Virginia

Brahma, I. (2011, May).  "The challenges of an empirical model based transient calibration process", in Röpke, K. (editor) Design of Experiments (DoE) in Engine Development V, Expert Verlag, 2011, pp 235-247, presented at DoE Conference, Berlin, Germany 2011

Brahma, I. (2011, April).  "Development of Dynamic Constraint Models for a Model Based Transient Calibration Process", SAE Paper 2011-01-0691, SAE World Congress April 2011, Detroit MI

Brahma, I., Sharp, M.C. and Frazier, T.R. (2008, April). "Estimation of Engine Torque from a First Law Based Regression Model", SAE (Society of Automotive Engineers) Paper 2008-01-1014, SAE World Congress April 2008, Detroit MI

Brahma, I., Rutland, C.J., Foster, D.E. and He, Y. (2005, April) "A New Approach to System Level Soot Modeling", SAE Paper 2005-01-1122, 2005, SAE World Congress April 2005, Detroit MI

Kapparos, D., Brahma, I., Strzelec, A., Rutland, C.J., Foster, D.E. and He, Y. (2005, April). "Integration of Diesel Engine, Exhaust System, Engine Emissions and Aftertreatment Device Models", SAE Paper 2005-01-094, SAE World Congress April 2005, Detroit MI

Brahma, I., and Rutland, C.J. (2003, April) "Improvement of Neural Network Accuracy for Engine Simulations", SAE Paper 2003-01-3227, SAE Fall Conference October 2003, Pittsburgh PA

Brahma, I., and Rutland, C.J., "Optimization of Diesel Engine Operating Parameters Using Neural Networks" (2004). SAE Fall Conference October 2003, Pittsburgh PA

Brahma, I., Zhu, X., Frankel S.H. and Gore, J.P (2001, October) "A Study of the Effects of Radiation on Pollutant Emissions in Direct Injection Engines", ICE-Vol.37-1, 2001 Fall technical conference, ASME 2001, pp 59-64, Sept 2001, ASME Fall Conference 2001, Argonne National Labs, IL

Grant Proposals

  • "Acquisition of a Fast Particulate Spectrometer", NSF MRI, PI, $166,240, funded, 09/01/13-09/01/16, awarded 08/16/2011
  • "Engineering Knowledge Based Machine Learning", NSF CAREER, PI, $399,997, declined 01/10/2011
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