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Low octane unleaded Aviation Gasoline in high performance aircraft piston engines

26 July 2012

Anti-Detonation Injection (ADI) is not a new technology. Indeed, papers published as early as 1913 make reference to water injection as not being "something new”. It’s first use dates to 1900 in Hungary. Testing was later conducted in 1913, 1914, 1917, 1933, 1935 and 1938. In 1935 when Wright Aeronautical was trying to induce carburetor icing it was noted that the engine ran smoother and with lower temperatures when water was injected. However the greatest body of work on this subject was accumulated during WWII. It is from this that we learn the most about the usefulness of ADI specifically as it relates to resolving octane issues today.

ADI might be one of the tools to be used to keep piston aircraft engines requiring high octane AVGAS to run in the future unleaded world.

An interesting article in this subject can be downloaded from the upper right hand corner.

More information are also to find at

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