4th Edition, June 1, 2014
Petroleum products - Determination of knock characteristics of motor fuels - Research method
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Description / Abstract:
This International Standard establishes the rating of liquid
spark-ignition engine fuel in terms of an arbitrary scale of octane
numbers using a standard single-cylinder, four-stroke cycle,
variable compression ratio, carburetted, CFR engine operated at
constant speed. Research octane number (RON) provides a measure of
the knock characteristics of motor fuels in automotive engines
under mild conditions of operation.