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ASTM D6890-07a

(Test Method)

Standard Test Method for Determination of Ignition Delay and Derived Cetane Number (DCN) of Diesel Fuel Oils by Combustion in a Constant Volume Chamber

Standard Test Method for Determination of Ignition Delay and Derived Cetane Number (DCN) of Diesel Fuel Oils by Combustion in a Constant Volume Chamber

SCOPE
1.1 This automated laboratory test method covers the quantitative determination of the ignition characteristics of conventional diesel fuel oil, oil-sands based fuels, blends of fuel containing biodiesel material, diesel fuel oils containing cetane number improver additives, and is applicable to products typical of ASTM Specification D 975 grades No. 1-D and 2-D regular and low-sulfur diesel fuel oils, European standard EN 590, and Canadian standards CAN/CGSB-3.517 and 3.6-2000. The test method may also be applied to the quantitative determination of the ignition characteristics of diesel fuel blending components.
1.2 This test method measures the ignition delay and utilizes a constant volume combustion chamber with direct fuel injection into heated, compressed air. An equation correlates an ignition delay determination to cetane number by Test Method D 613, resulting in a derived cetane number (DCN).
1.3 This test method covers the ignition delay range from 3.3 to 6.4 ms (61 to 34 DCN). The combustion analyzer can measure shorter and longer ignition delays, but precision may be affected. For these shorter or longer ignition delays the correlation equation for DCN is given in Appendix X2. There is no information about how DCNs outside the 34 to 61 range compare to Test Method D 613 cetane numbers.
1.4 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
This standard does not purport to address all of the safety concerns, if any, 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.

General Information

Status
Historical
Publication Date
14-Feb-2007
ICS
13.220.40 - Ignitability and burning behaviour of materials and products
43.060.40 - Fuel systems
Technical Committee
D02 - Petroleum Products, Liquid Fuels, and Lubricants
Drafting Committee
D02.01 - Combustion Characteristics
Current Stage
Ref Project

Relations

Replaces
ASTM D6890-07 - Standard Test Method for Determination of Ignition Delay and Derived Cetane Number (DCN) of Diesel Fuel Oils by Combustion in a Constant Volume Chamber
Effective Date
15-Feb-2007
Replaced By
ASTM D6890-07b - Standard Test Method for Determination of Ignition Delay and Derived Cetane Number (DCN) of Diesel Fuel Oils by Combustion in a Constant Volume Chamber
Effective Date
01-Dec-2007
Referred By
ASTM D4737-21 - Standard Test Method for Calculated Cetane Index by Four Variable Equation
Effective Date
15-Feb-2007
Referred By
ASTM D6751-23a - Standard Specification for Biodiesel Fuel Blendstock (B100) for Middle Distillate Fuels
Effective Date
15-Feb-2007
Referred By
ASTM D1655-23 - Standard Specification for Aviation Turbine Fuels
Effective Date
15-Feb-2007
Referred By
ASTM D4054-23 - Standard Practice for Evaluation of New Aviation Turbine Fuels and Fuel Additives
Effective Date
15-Feb-2007
Referred By
ASTM D8147-17(2023) - Standard Specification for Special-Purpose Test Fuels for Aviation Compression-Ignition Engines
Effective Date
15-Feb-2007
Referred By
ASTM D975-23 - Standard Specification for Diesel Fuel
Effective Date
15-Feb-2007
Referred By
ASTM D7467-20a - Standard Specification for Diesel Fuel Oil, Biodiesel Blend (B6 to B20)
Effective Date
15-Feb-2007

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ASTM D6890-07a - Standard Test Method for Determination of Ignition Delay and Derived Cetane Number (DCN) of Diesel Fuel Oils by Combustion in a Constant Volume ChamberASTM D6890-07a - Standard Test Method for Determination of Ignition Delay and Derived Cetane Number (DCN) of Diesel Fuel Oils by Combustion in a Constant Volume Chamber
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ASTM D6890-07a - Standard Test Method for Determination of Ignition Delay and Derived Cetane Number (DCN) of Diesel Fuel Oils by Combustion in a Constant Volume Chamber
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Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
An American National Standard
Designation:D6890–07a
Standard Test Method for
Determination of Ignition Delay and Derived Cetane Number
(DCN) of Diesel Fuel Oils by Combustion in a Constant
,
1 2
Volume Chamber
This standard is issued under the fixed designation D6890; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision.Anumber in parentheses indicates the year of last reapproval.A
superscript epsilon (e) indicates an editorial change since the last revision or reapproval.
1. Scope* priate safety and health practices and determine the applica-
bility of regulatory limitations prior to use.
1.1 This automated laboratory test method covers the quan-
titative determination of the ignition characteristics of conven-
2. Referenced Documents
tional diesel fuel oil, oil-sands based fuels, blends of fuel
3
2.1 ASTM Standards:
containingbiodieselmaterial,dieselfueloilscontainingcetane
D613 Test Method for Cetane Number of Diesel Fuel Oil
number improver additives, and is applicable to products
D975 Specification for Diesel Fuel Oils
typical ofASTM Specification D975 grades No. 1-D and 2-D
D1193 Specification for Reagent Water
regular and low-sulfur diesel fuel oils, European standard
D4057 Practice for Manual Sampling of Petroleum and
EN590, and Canadian standards CAN/CGSB-3.517 and 3.6-
Petroleum Products
2000. The test method may also be applied to the quantitative
D4175 Terminology Relating to Petroleum, Petroleum
determination of the ignition characteristics of diesel fuel
Products, and Lubricants
blending components.
D4177 Practice for Automatic Sampling of Petroleum and
1.2 Thistestmethodmeasurestheignitiondelayandutilizes
Petroleum Products
a constant volume combustion chamber with direct fuel injec-
D 5854 Practice for Mixing and Handling of Liquid
tion into heated, compressed air. An equation correlates an
Samples of Petroleum and Petroleum Products
ignition delay determination to cetane number byTest Method
D6299 Practice forApplying Statistical QualityAssurance
D613, resulting in a derived cetane number (DCN).
Techniques to Evaluate Analytical Measurement System
1.3 This test method covers the ignition delay range from
Performance
3.3 to 6.4 ms (61 to 34 DCN). The combustion analyzer can
D6300 Practice for Determination of Precision and Bias
measure shorter and longer ignition delays, but precision may
Data for Use in Test Methods for Petroleum Products and
be affected. For these shorter or longer ignition delays the
Lubricants
correlation equation for DCN is given inAppendix X2. There
D6708 Practice for Statistical Assessment and Improve-
is no information about how DCNs outside the 34 to 61 range
ment of ExpectedAgreement Between Two Test Methods
compare to Test Method D613 cetane numbers.
that Purport to Measure the Same Property of a Material
1.4 The values stated in SI units are to be regarded as
E456 Terminology Relating to Quality and Statistics
standard. No other units of measurement are included in this
4
2.2 ISO Standards:
standard.
ISO 4010 Diesel Engines—Calibrating Nozzle, Delay
1.5 This standard does not purport to address all of the
Pintle Type
safety concerns, if any, associated with its use. It is the
ISO 4259 Petroleum products—Determination and applica-
responsibility of the user of this standard to establish appro-
tion of precision data in relation to methods of test
2.3 EN Standard:
1
This test method is under the jurisdiction of ASTM Committee D02 on
PetroleumProductsandLubricantsandisthedirectresponsibilityofSubcommittee
D02.01 on Combustion Characteristics.
3
Current edition approved Feb. 15, 2007. Published March 2007. Originally For referenced ASTM standards, visit the ASTM website, www.astm.org, or
approved in 2003. Last previous edition approved in 2007 as D6890–07. contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
2
This test method is based on IP PM CQ/2001, published in the IP Standard Standards volume information, refer to the standard’s Document Summary page on
Methods for Analysis and Testing of Petroleum and Related Products and British the ASTM website.
4
Standard 2000 Parts. Copyrighted by Energy Institute, 61 New Cavendish Street, AvailablefromAmericanNationalStandardsInstitute,25W.43rdSt.,4thfloor,
London, W1G 7AR, UK. Adapted with permission of Energy Institute. New York, NY 10036.
*A Summary of Changes section appears at the end of this standard.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1

---------------------- Page: 1 ----------------------
D6890–07a
EN 590 Automotive Fuels—Diesel—Requirements and 3.2.4 combustion analyzer, n—integratedcompressionigni-
5
Test Methods tion apparatus to measure the ignition characteri
...

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Standard Test Method for Determination of Ignition Delay and Derived Cetane Number (DCN) of Diesel Fuel Oils by Combustion in a Constant Volume Chamber

SIGNIFICANCE AND USE
5.1 The ID and DCN values determined by this test method can provide a measure of the ignition characteristics of diesel fuel oil in compression ignition engines.  
5.2 This test can be used in commerce as a specification aid to relate or match fuels and engines. It can also be useful in research or when there is interest in the ignition delay of a diesel fuel under the conditions of this test method.  
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5.5 This test determines ignition characteristics and requires a sample of approximately 100 mL and a test time of approximately 20 min on a fit-for-use instrument.
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1.1 This automated laboratory test method covers the quantitative determination of the ignition characteristics of conventional diesel fuel oil, oil-sands based fuels, hydrocarbon oils, blends of fuel containing biodiesel material, diesel fuel oils containing cetane number improver additives, and is applicable to products typical of ASTM Specification D975 grades No. 1-D S15, No. 1-D S500, and No. 1-D S5000, and grades No. 2-D S15, No. 2-D S500, and No. 2-D S5000 diesel fuel oils, European standard EN 590, and Canadian standards CAN/CGSB-3.517 and 3.520. The test method may also be applied to the quantitative determination of the ignition characteristics of diesel fuel blending components.  
1.2 This test method measures the ignition delay of a diesel fuel injected directly into a constant volume combustion chamber containing heated, compressed air. An equation correlates an ignition delay determination to cetane number by Test Method D613, resulting in a derived cetane number (DCN).  
1.3 This test method covers the ignition delay range from 2.64 ms to 6.90 ms (75.1 DCN to 31.5 DCN). The combustion analyzer can measure shorter and longer ignition delays, but precision may be affected. For these shorter or longer ignition delays the correlation equation for DCN is given in Appendix X2.  
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SIGNIFICANCE AND USE
5.1 The ID and DCN values determined by this test method can provide a measure of the ignition characteristics of diesel fuel oil in compression ignition engines.  
5.2 This test can be used in commerce as a specification aid to relate or match fuels and engines. It can also be useful in research or when there is interest in the ignition delay of a diesel fuel under the conditions of this test method.  
5.3 The relationship of diesel fuel oil DCN determinations to the performance of full-scale, variable-speed, variable-load diesel engines is not completely understood.  
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1.1 This automated laboratory test method covers the quantitative determination of the ignition characteristics of conventional diesel fuel oil, oil-sands based fuels, hydrocarbon oils, blends of fuel containing biodiesel material, diesel fuel oils containing cetane number improver additives, and is applicable to products typical of ASTM Specification D975 grades No. 1-D S15, No. 1-D S500, and No. 1-D S5000, and grades No. 2-D S15, No. 2-D S500, and No. 2-D S5000 diesel fuel oils, European standard EN 590, and Canadian standards CAN/CGSB-3.517 and 3.520. The test method may also be applied to the quantitative determination of the ignition characteristics of diesel fuel blending components.  
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1.1 This specification covers UNS N06002, UNS N06030, UNS N06035, UNS N06022, UNS N06200, UNS N10362, UNS N06230, UNS N06600, UNS N06617, UNS N06625, UNS N08020, UNS N08026, UNS N08024, UNS N08120, UNS N08926, UNS N08367, UNS N10242, UNS N10276, UNS N10665, UNS N10675, UNS N12160, UNS R20033, UNS N06059, UNS N06686, UNS N10629, UNS N08031, UNS N06045, UNS N06025, UNS N06699, and UNS R305562 billets and bars for reforging.  
1.2 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.  
1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to become familiar with all hazards including those identified in the appropriate Safety Data Sheet (SDS) for this product/material as provided by the manufacturer, to establish appropriate safety, health, and environmental practices, and determine the applicability of regulatory limitations prior to use.  
1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

  • Technical specification
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    English language
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  • Technical specification
    5 pages
    English language
    sale 15% off