ISO-5164 › Historical Revision Information
Motor fuels - Determination of knock characteristics - Research method

ISO-5164 - 2ND EDITION - SUPERSEDED
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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.

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.

ISO 5164:2014 is applicable for oxygenate-containing fuels containing up to 4,0 % (m/m) oxygen and for gasoline containing up to 25 % (V/V) ethanol.

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75.160.20 (Liquid fuels Including gasoline, diesel, kerosene, etc.)

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Document Number

ISO 5164:1990

Revision Level

2ND EDITION

Status

Superseded

Publication Date

Dec. 15, 1990

Committee Number

ISO/TC 28