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BS EN 16715:2015

Current
Current

The latest, up-to-date edition.

Liquid petroleum products. Determination of ignition delay and derived cetane number (DCN) of middle distillate fuels. Ignition delay and combustion delay determination using a constant volume combustion chamber with direct fuel injection
Available format(s)

Hardcopy , PDF

Language(s)

English

Published date

08-31-2015

European 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 analyser description
Annex B (normative) - Operational details in support to
        the standard test procedure
Bibliography

Defines a test method for the quantitative determination of ignition and combustion delays of middle distillate fuels intended for use in compression ignition engines.

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. This European Standard specifies a test method for the quantitative determination of ignition and combustion delays of middle distillate fuels intended for use in compression ignition engines. The method utilizes a constant volume combustion chamber with direct fuel injection into heated, compressed synthetic air. A dynamic pressure wave is produced from the combustion of the product under test. An equation is given to calculate the derived cetane number (DCN) from the ignition and combustion delays determined from the dynamic pressure curve. This standard is applicable to middle distillate fuels, fatty acid methyl esters (FAME) and blends of diesel fuels and FAME .The method is also applicable to middle distillate fuels of non-petroleum origin, oil-sands based fuels, blends of fuel containing biodiesel material, diesel fuel oils containing cetane number improver additives and low-sulfur diesel fuel oils. However, users applying this standard especially to unconventional distillate fuels are warned that the relationship between derived cetane number and combustion behaviour in real engines is not yet fully understood. This standard covers the ignition delay range from 2,47 ms to 4,09 ms and combustion delay from 3,71 ms to 6,74 ms (67 DCN to 39 DCN). NOTE 1 The combustion analyser can measure shorter or longer ignition and combustion delays, but precision is not known. NOTE 2 There is no information about how DCNs outside the 67 to 39 range compares to EN ISO 5165. NOTE 3 For the purpose of this European Standard, the expression (% (V/V)) is used to represent the volume fraction (?), and (% (m/m)) the mass fraction (?).

Committee
PTI/2
DevelopmentNote
Supersedes 14/30295249 DC. (08/2015)
DocumentType
Standard
Pages
28
PublisherName
British Standards Institution
Status
Current
Supersedes

Standards Relationship
IP 615 : 2016 Identical
EN 16715 : 2015 Identical

BS 2869:2017 Fuel oils for agricultural, domestic and industrial engines and boilers Specification

ISO 3171:1988 Petroleum liquids — Automatic pipeline sampling
ISO 3170:2004 Petroleum liquids — Manual sampling
ISO 1998-2:1998 Petroleum industry Terminology Part 2: Properties and tests
ISO 4259:2006 Petroleum products Determination and application of precision data in relation to methods of test
ASTM D 7668 : 2017 : REDLINE Standard Test Method for Determination of Derived Cetane Number (DCN) of Diesel Fuel Oils—Ignition Delay and Combustion Delay Using a Constant Volume Combustion Chamber Method
ISO 3696:1987 Water for analytical laboratory use — Specification and test methods
EN ISO 3696:1995 Water for analytical laboratory use - Specification and test methods (ISO 3696:1987)
EN ISO 3170:2004 Petroleum liquids - Manual sampling (ISO 3170:2004)
EN ISO 3171:1999 Petroleum liquids - Automatic pipeline sampling (ISO 3171:1988)
EN ISO 4259:2006 Petroleum products - Determination and application of precision data in relation to methods of test (ISO 4259:2006)

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