EN 16144:2012

Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Principle
5 Reagents and materials
6 Apparatus
7 Sampling
8 Apparatus assembly and installation
9 Preparation of apparatus
10 Calibration, verification and quality control
11 Test procedure
12 Calculation
13 Expression of results
14 Precision
15 Test report
Annex A (normative) - Combustion analyzer description
Annex B (normative) - Operational details in
        support to the standard test procedure
Bibliography

This European Standard specifies a test method for the quantitative determination of ignition delay of middle distillate fuels intended for use in compression ignition engines. The method utilizes a constant volume combustion chamber designed for operation by compression ignition, and employing direct injection of fuel into compressed air that is controlled to a specified pressure and temperature. An equation is given to calculate the derived cetane number (DCN) from the ignition delay measurement.This method is applicable to diesel fuels, including blends with FAME up to 100 %. The method is also applicable to middle distillate fuels of non-petroleum origin, although users applying this standard are warned that the relationship between ignition characteristics and engine performance in unconventional fuels is not yet fully understood. The standard covers the ignition delay range from 2,9 ms to 5,0 ms (60 DCN to 35 DCN).NOTEFor the purpose of this European Standard, the expression "% (V/V)" is used to represent the volume fraction (φ), and "% (m/m)" the mass fraction (ω).WARNING - The use of this standard may involve hazardous materials, operations and equipment. This standard does not purport to address all of the safety problems associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.