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Douglas E. Longman

Section Manager, Engine Combustion Research


Mr. Longman is currently the Manager of Engine Research at Argonne National Laboratory. This research spans internal combustion engine experimental study of fundamental combustion properties, low-temperature combustion, heavy-duty IC engine biofuels, and large engine stationary and locomotive engine research, microturbines, and combined heat and power systems.

He has been the principal investigator for several diesel engine research programs including large locomotive single cylinder engine emissions research, on-highway truck engines, and biofuel combustion characterization. He has led multi-disciplined, multi-organization teams investigating the integrated design of biofuels and engines simultaneously. These multi-disciplined teams contained both basic and applied researchers, and the approach ensures that an end product’s utilization will be compatible with existing in-service vehicles, as well as the low-emissions, high efficiency internal combustion engines of the future. He has more than 40 peer reviewed publications in engine performance and emissions research.

Prior to joining Argonne, Mr. Longman spent 12 years at Caterpillar Inc. where he specialized in diesel fuel injection systems test and development. He also worked 7 years at AutoResearch Laboratories conducting diesel engine emissions and lubricant research for engine original equipment manufacturers, major oil companies, and petroleum additive companies.

Education and Training
  • B.S., Agricultural Engineering, University of Illinois at Urbana Champaign, 1982
  • M.S., Mechanical Engineering, University of Illinois at Chicago, 2006
  • Professional Engineering License – Mechanical Engineering - State of Illinois
Patents and Inventions
  • U.S. Patent No. 5697341, Fill metered hydraulically actuated fuel injection system and method of fuel injection.
  • U.S. Patent No. 5181494, Hydraulically actuated electronically controlled unit injector having stoke-controlled piston and methods of operation.
  • ANL-IN-05-129, Method for in-cylinder oxygen-enriched air injection to reduce diesel engine exhaust emissions.