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EN ISO 5165:2018

Superseded

Superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

View Superseded by

Petroleum products - Determination of the ignition quality of diesel fuels - Cetane engine method (ISO 5165:2017)

Superseded date

20-08-2020

Superseded by

EN ISO 5165:2020

Published date

31-01-2018

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European Foreword
Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Principle
5 Reagents and reference materials
6 Apparatus
7 Sampling and sample preparation
8 Basic engine and instrument settings and
   standard operating conditions
9 Engine qualification
10 Procedure
11 Calculation
12 Expression of results
13 Precision
14 Test report
Bibliography

ISO 5165:2017 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.ISO 5165:2017 is applicable for the entire scale range from 0 CN to 100 CN but typical testing is in the range of 30 CN to 65 CN. An interlaboratory study executed by CEN in 2013 (10 samples in the range 52,4 CN to 73,8 CN)[1] confirmed that paraffinic diesel from synthesis or hydrotreatment, containing up to 7 % (V/V) fatty acid methyl ester (FAME) can be tested by this test method and that the precision is comparable to conventional fuels.This test can be used for unconventional fuels such as synthetics, vegetable oils, etc. However, the relationship to the performance of such materials in full scale engines is not completely understood.Samples with fluid properties that interfere with the gravity flow of fuel to the fuel pump or delivery through the injector nozzle are not suitable for rating by this method.NOTE This document specifies operating conditions in SI units but engine measurements are specified in inch-pound units because these are the historical units used in the manufacture of the equipment, and thus some references in this document include these units in parenthesis.

Committee
CEN/TC 19
DocumentType
Standard
PublisherName
Comite Europeen de Normalisation
Status
Superseded
SupersededBy

ISO 3171:1988 Petroleum liquids — Automatic pipeline sampling
ISO 4787:2010 Laboratory glassware Volumetric instruments Methods for testing of capacity and for use
ISO 3170:2004 Petroleum liquids — Manual sampling
SAE J300_201501 Engine Oil Viscosity Classification
ISO 3696:1987 Water for analytical laboratory use — Specification and test methods
ISO 3015:1992 Petroleum products — Determination of cloud point

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