Raj Sekar

Mechanical Engineer
- Energy Systems

Raj Sekar, a senior mechanical engineer, leads the Engine and Emissions Research group at Argonne, which conducts research on advanced engine and emissions reduction concepts. He works with automobiles, trucks and locomotives.

Sekar has been responsible for developing experimental engineering capabilities in the area of engine and vehicle research within Argonne’s Center for Transportation Research (CTR).  CTR already had a well-established reputation in assessments, but needed an experimental capability to grow further in transportation research.

In recent years, Sekar has developed a well-recognized engine combustion modeling team, which provides an in-depth chemistry and physics basis for engineering designs.  This effort to “bridge the gap” between the basic sciences and applied engineering has been well received by engine and vehicle manufacturers.

Sekar has published over 70 peer-reviewed articles, holds 12 patents, and is a Fellow of the American Society of Mechanical Engineers.

Awards, Honors and Memberships

  • 2 Laboratory Director’s Awards, Argonne National Laboratory, 1998 and 2001
  • 2 Pacesetter Awards, Argonne National Laboratory, 1997 and 1999
  • R&D 100 Award, R&D Magazine, 1999
  • Three Internal Combustion Engine Division Awards, American Society of Mechanical Engineers (ASME), 1999, 2001, 2010
  • FLC Award for Excellence in Technology Transfer, Federal Laboratory Consortium (FLC), 1990
  • Achievement Recognition Award from Electro-Motive Division, General Motors, 1997
  • Director's Award, Argonne National Laboratory Energy Systems Division, 1996
  • Fellow, American Society of Mechanical Engineers (2002)
  • Life Member, American Society of Mechanical Engineers
  • Member, American Society of Mechanical Engineers
  • Member, Society of Automotive Engineers  (SAE) International

Publications & Patents

  • U.S. Patent 7,699,033 B2, “Method and system to distribute high-energy pulses to multiple channels,” April 2010.
  • U.S. Patent 7,455,046 B2, “Nitrogen enriched combustion of a natural gas internal combustion engine to reduce NOx emissions,” November 2008.
  • U.S. Patent 7,114,858, “Laser based ignition system for natural gas reciprocating engines, laser based ignition system having capability to detect successful ignition event; and distributor system for use with high-powered pulsed lasers,” October 2006.
  • U.S. Patent 6,700,662, “Portable LII based instrument and method for particulate characterization in combustion exhaust,” March 2004.
  •  U.S. Patent 6,173,567, “Method to reduce diesel engine exhaust emissions, January 2001.
  • U.S. Patent 6,055,808, “Method and apparatus for reducing particulates and NOX emissions from diesel engines utilizing oxygen enriched combustion air,” May 2000.
  • U.S. Patent 5,649,517, “Variable oxygen/nitrogen enriched intake air system for internal combustion engine applications,” July 1997.
  • U.S. Patent 5,640,845, “Nitrogen spark denoxer,” June 1997.
  • U.S. Patent 5,636,619, “Method and apparatus for reducing cold-phase emissions by utilizing oxygen-enriched intake air,” June 1997.
  • U.S. Patent 5,526,641, “NOx reduction method,” June 1996.
  • U.S. Patent 4,061,187, “Dual Cooling System,” December 1977.
  • Gupta, S. B., Bihari, B., Biruduganti, M. S., and Sekar, R. R., “In-Cylinder Equivalence Ratio Measurements in an EGR Equipped Engine,” Journal of Engineering for Gas Turbines and Power, Vol. 133, pp. 114504, 2011.
  • Bihari, B., Gupta, S. B., Biruduganti, M. S., and Sekar, R. R., “Diagnostics for Combustion Metrics in Natural gas Fueled Reciprocating Engines,” SAE 2011-26-007, SIAT, India, January 2011.
  • Gupta, S. B., Bihari, B., Biruduganti, M. S., and Sekar, R. R., “On use of CO2* Chemiluminescence for Combustion Metrics in Natural gas Fired Reciprocating Engines,” 33rd International Symposium on Combustion, Beijing, China, August 1-6, 2010.
  • Biruduganti, M., Gupta, S., Bihari, B., McConnell, S., Sekar, R., “Air Separation Membranes- An Alternative to EGR in Large Bore natural Gas Engines,” J. Eng. Gas Turbines Power,” Volume 132,  Issue 8, 082804, 2010.
  • Bihari, B., Gupta, S., Biruduganti, M., Sekar, R., “In cylinder optical diagnostics in laser ignited natural gas fired reciprocating engine,” ASME-ICEF 35105, San Antonio, 2010 ASME Fall Technical Conference, TX, 2010.
  • Bihari, B., Gupta, S. B., Sekar, R. R., Gingrich, J. and Smith, J., “Development of Advanced Laser Ignition System for Stationary Natural Gas Reciprocating Engines,” ICEF2005-1325, ASME-ICE 2005 Fall Technical Conference, Ottawa, Canada, 2005.
  • Biruduganti, M., Sreenath B. Gupta, Raj Sekar, Steven McConnell, “Nitrogen Enriched Combustion of a Natural Gas Engine to Reduce NOx Emissions” ICEF 2004-843, ASME-ICED Fall Technical Conference, 2004.
  • Poola, R., and Sekar, R. Reduction of NOx and Particulate Emissions by Using Oxygen-Enriched Combustion Air in a Locomotive Diesel Engine, Journal of Engineering for Gas Turbine and Power, Transactions of ASME, Vol. 125, 2003.
  • Lee, K. O.; Zhu, J.Z.; Sekar, R.; Choi, M.Y. “Characterization of Particulate Sizes, Microstructures,  and Fractal Geometry of a Light Duty Diesel Engine via Thermophoretic Sampling” 13th CRC On-Road Vehicle Emission Workshop, San Diego, CA, April 2003.
  • Sekar, R. and R. Poola, Demonstration of Oxygen-enriched Combustion System on a light-duty vehicle to reduce cold-start Emissions, 30th International Symposium on Automotive Technology and Automation, ISATA Proceedings, pp301-310, paper no. 97EN038.
  • Sekar, R.et al, Heat Release Analysis of Oxygen-Enriched Diesel Combustion, presented at the Internal Combustion Symposium of the Energy-Sources Technology Conference and Exhibition sponsored by the American Society of Mechanical Engineers, Houston, Texas. ASME Paper Number 93-ICE-8, 1993.
  • Sekar, R. et al, Oxygen-Enriched Diesel Engine Performance: A Comparison of Analytical and Experimental Results, Proc. of American Society of Mechanical Engineers. Internal Combustion Engine Division , ICE-Vol. 13, Rockford, Ill., 1990.