<p>ISO 5164:2014 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.</p>
<p>ISO 5164:2014 is applicable for the entire scale range from 0 RON to 120 RON, but the working range is 40 RON to 120 RON. Typical motor fuel testing is in the range of 88 RON to 101 RON.</p>
<p>ISO 5164:2014 is applicable for oxygenate-containing fuels containing up to 4,0 % (<i>m</i>/<i>m</i>) oxygen and for gasoline containing up to 25 % (<i>V/V</i>) ethanol.</p>
Registration number (WIID)
61716
Scope
<p>ISO 5164:2014 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.</p>
<p>ISO 5164:2014 is applicable for the entire scale range from 0 RON to 120 RON, but the working range is 40 RON to 120 RON. Typical motor fuel testing is in the range of 88 RON to 101 RON.</p>
<p>ISO 5164:2014 is applicable for oxygenate-containing fuels containing up to 4,0 % (<i>m</i>/<i>m</i>) oxygen and for gasoline containing up to 25 % (<i>V/V</i>) ethanol.</p>
