This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
New Potentials for Conventional Aircraft When Powered by Hydrogen-Enriched Gasoline
Annotation ability available
Sector:
Language:
English
Abstract
Hydrogen enrichment for aircraft piston engines is under study in a new NASA program. The objective of the program is to determine the feasibility of inflight injection of hydrogen in general aviation aircraft engines to reduce fuel consumption and to lower emission levels.
A catalytic hydrogen generator will be incorporated as part of the air induction system of a Lycoming turbocharged engine and will generate hydrogen by breaking down small amounts of the aviation gasoline used in the normal propulsion system. This hydrogen will then be mixed with gasoline and compressed air from the turbocharger before entering the engine combustion chamber. The special properties of the hydrogen-enriched gasoline allow the engine to operate at ultralean fuel/air ratios, resulting in higher efficiencies and hence less fuel consumption.
This paper summarizes the results of a systems analysis study. Calculations assuming a Beech Duke aircraft indicate that fuel savings on the order of 20% are possible. An estimate of the potential for the utilization of hydrogen enrichment to control exhaust emissions indicates that it may be possible to meet the 1979 Federal emission standards.
Recommended Content
Authors
Topic
Citation
Menard, W., Moynihan, P., and Rupe, J., "New Potentials for Conventional Aircraft When Powered by Hydrogen-Enriched Gasoline," SAE Technical Paper 760469, 1976, https://doi.org/10.4271/760469.Also In
References
- Taylor C. F. Taylor E. S. The Internal Combustion Engine 30 56 International Textbook Company Scranton, Pa. 1950
- Breshears R. Cotrill H. Rupe J. “Partial Hydrogen Injection Into Internal Combustion Engine--Effect on Emissions and Fuel Economy.” Environmental Protection Agency (EPA) First Symposium on Low-Pollution Power Systems Development Ann Arbor, Mich. Oct. 14-19 1973
- Hoehn F. W. Dowdy M. W. “Feasibility Demonstration of a Road Vehicle Fueled With Hydrogen-Enriched Gasoline.” Paper 749105 9th Intersociety Energy Conversion Engineering Conference San Francisco, Calif. August 26-30 1974
- Hoehn F. W. “Feasibility Demonstration of Hydrogen Enrichment Concept Using Experimental Catalytic Generator.” Jet Propulsion Laboratory Pasadena, Calif. Oct. 8 1974
- Houseman J. Cerini D. J. “On-Board Hydrogen Generator for a Partial Hydrogen Injection Internal Combustion Engine.” Paper 740600 Society of Automotive Engineers West Coast Meeting Anaheim, Calif. Aug. 12-16 1974
- “Hydrogen-Enrichment-Concept Preliminary Evaluation.” Report 1200-237 Jet Propulsion Laboratory Pasadena, Calif. July 1975
- Stocky J. F. “An Estimate of the System Efficiency of the Hydrogen Injection Concept.” Jet Propulsion Laboratory Pasadena, Calif. March 1974
- Moynihan P. I. Menard W. A. Vanderbrug T. G. “A Systems Analysis of Hydrogen-Enriched Fuel for General Aviation Aircraft.” JPL internal document Jet Propulsion Laboratory Pasadena, Calif.
- 38 136 19088 July 17 1973
- Syson R. H. “Emission Characteristics of a Light Aircraft Piston Engine.” Society of Engineers Meeting Wichita, Kan. Apr. 3 1974
- Requeriro J. F. Collection and Assessment of Aircraft Emissions Final Report to the Environmental Protection Agency Teledyne Continental Motors Oct. 1971