Table of Contents

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

Abstract

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 Product Information

Published
Document Type	Standard
Status	Current
Publisher	International Organization for Standardization
Pages
ISBN
Committee	TC 28
Supersedes	ISO 5165 : 1998