RS ISO 5165: 2017
Petroleum products — Determination of the ignition quality of diesel fuels — Cetane engine method


This document establishes the rating of diesel fuel oil in terms of an arbitrary scale of cetane numbers
(CNs) using a standard single cylinder, four-stroke cycle, variable compression ratio, indirect injected
diesel engine. The CN provides a measure of the ignition characteristics of diesel fuel oil in compression
ignition engines. The CN is determined at constant speed in a pre-combustion chamber-type
compression ignition test engine. However, the relationship of test engine performance to full scale,
variable speed and variable load engines is not completely understood.

General Information

RS ISO 5165: 2017ADOPTED ISO STANDARDSPetroleum and related technologies29Forth Edition
Apr 2020
Price: RWF 30,000

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