Determination of Minimum Fuel Octane Number Piston Aircraft Engines

Paper #:
  • 931230

Published:
  • 1993-05-01
Citation:
Ingram, R. and Visser, B., "Determination of Minimum Fuel Octane Number Piston Aircraft Engines," SAE Technical Paper 931230, 1993, https://doi.org/10.4271/931230.
Pages:
19
Abstract:
The determination of the minimum fuel octane required for an aircraft engine, utilizes detonation equipment and test techniques developed prior to World War II. These procedures were designed to provide a 12% margin of safety on traditional leaded aviation fuels which met the lean and rich ratings as listed in the applicable ASTM specification. Now, due to a possible phase out of leaded fuels, it appears necessary for aircraft engine manufacturers and STC applicants to re-evaluate these techniques and procedures to determine if they are applicable for unleaded fuels. And to re-evaluate existing engines to determine the minimum acceptable requirements for a new unleaded aviation gasoline. This paper reviews these techniques and looks at possible requirements for an unleaded aviation gasoline.
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