1、Designation:D689015aStandard Test Method forDetermination of Ignition Delay and Derived Cetane Number(DCN)of Diesel Fuel Oils by Combustion in a ConstantVolume Chamber1,2This standard is issued under the fixed designation D6890;the number immediately following the designation indicates the year ofor
2、iginal adoption or,in the case of revision,the year of last revision.A number in parentheses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope*1.1 This automated laboratory test method covers the quan-titative dete
3、rmination of the ignition characteristics of conven-tional diesel fuel oil,oil-sands based fuels,blends of fuelcontaining biodiesel material,diesel fuel oils containing cetanenumber improver additives,and is applicable to productstypical of ASTM Specification D975 grades No.1-D S15,No.1-D S500,and N
4、o.1-D S5000,and grades No.2-D S15,No.2-D S500,and No.2-D S5000 diesel fuel oils,Europeanstandard EN 590,and Canadian standards CAN/CGSB-3.517and 3.6-2000.The test method may also be applied to thequantitative determination of the ignition characteristics ofdiesel fuel blending components.1.2 This te
5、st method measures the ignition delay of a dieselfuel injected directly into a constant volume combustionchamber containing heated,compressed air.An equation cor-relates an ignition delay determination to cetane number byTest Method D613,resulting in a derived cetane number(DCN).1.3 This test method
6、 covers the ignition delay range from3.1 ms to 6.5 ms(64 DCN to 33 DCN).The combustionanalyzer can measure shorter and longer ignition delays,butprecision may be affected.For these shorter or longer ignitiondelays the correlation equation for DCN is given in AppendixX2.There is no information about
7、how DCNs outside the 33 to64 range compare to Test Method D613 cetane numbers.1.4 The values stated in SI units are to be regarded asstandard.No other units of measurement are included in thisstandard.1.5 This standard does not purport to address all of thesafety concerns,if any,associated with its
8、use.It is theresponsibility of the user of this standard to establish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.2.Referenced Documents2.1 ASTM Standards:3D613 Test Method for Cetane Number of Diesel Fuel OilD975 Specification for
9、 Diesel Fuel OilsD1193 Specification for Reagent WaterD4057 Practice for Manual Sampling of Petroleum andPetroleum ProductsD4175 Terminology Relating to Petroleum,PetroleumProducts,and LubricantsD4177 Practice for Automatic Sampling of Petroleum andPetroleum ProductsD5854 Practice for Mixing and Han
10、dling of Liquid Samplesof Petroleum and Petroleum ProductsD6299 Practice for Applying Statistical Quality Assuranceand Control Charting Techniques to Evaluate AnalyticalMeasurement System PerformanceD6300 Practice for Determination of Precision and BiasData for Use in Test Methods for Petroleum Prod
11、ucts andLubricantsD6708 Practice for Statistical Assessment and Improvementof Expected Agreement Between Two Test Methods thatPurport to Measure the Same Property of a MaterialE456 Terminology Relating to Quality and Statistics2.2 ISO Standards:4ISO 4010 Diesel EnginesCalibrating Nozzle,Delay Pintle
12、TypeISO 4259 Petroleum productsDetermination and applica-tion of precision data in relation to methods of test1This test method is under the jurisdiction of ASTM Committee D02 onPetroleum Products,Liquid Fuels,and Lubricants and is the direct responsibility ofSubcommittee D02.01 on Combustion Charac
13、teristics.Current edition approved Oct.1,2015.Published October 2015.Originallyapproved in 2003.Last previous edition approved in 2015 as D6890 15.DOI:10.1520/D6890-15A.2This test method is based on IP PM CQ/2001,published in the IP StandardMethods for Analysis and Testing of Petroleum and Related P
14、roducts and BritishStandard 2000 Parts.Copyrighted by Energy Institute,61 New Cavendish Street,London,W1G 7AR,UK.Adapted with permission of Energy Institute.3For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book of ASTMSt
15、andards volume information,refer to the standards Document Summary page onthe ASTM website.4Available fromAmerican National Standards Institute,25 W.43rd St.,4th floor,New York,NY 10036.*A Summary of Changes section appears at the end of this standardCopyright ASTM International,100 Barr Harbor Driv
16、e,PO Box C700,West Conshohocken,PA 19428-2959.United States1 2.3 EN Standard:EN 590 Automotive FuelsDieselRequirements and TestMethods52.4 Energy Institute Standard:IP 41 Ignition Quality of Diesel FuelsCetane Engine TestMethod62.5 Canadian Standards:CAN/CGSB-3.517-2000Automotive Low Sulfur DieselFuelSpecification7CAN/CGSB3.6-2000 AutomotiveDieselFuelSpecification73.Terminology3.1 Definitions:3.1.1 accepted reference value(ARV),nvalue that servesas an agreed-upon reference for comparison and tha
