ASTM_D_7170_-_16.pdf

Designation:D717016Standard Test Method forDetermination of Derived Cetane Number(DCN)of DieselFuel OilsFixed Range Injection Period,Constant VolumeCombustion Chamber Method1This standard is issued under the fixed designation D7170;the number immediately following the designation indicates the year oforiginal 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 test method covers the quantitative determinationof the ignition characteristics of conventional diesel fuel oils,diesel fuel oils containing cetane number improver additives,and is applicable to products typical of Specification D975,Grades No.1-D and 2-D regular and low-sulfur diesel fuel oils,European standard EN 590,and Canadian standards CAN/CGSB-3.517-2000 and CAN/CGSB 3.6-2000.The test methodmay also be applied to the quantitative determination of theignition characteristics of blends of fuel oils containing bio-diesel material,and diesel fuel oil blending components.1.2 This test method measures the ignition delay and utilizesa constant volume combustion chamber with direct fuel injec-tion into heated,compressed air.An equation converts anignition delay determination to a derived cetane number(DCN).1.3 This test method covers the ignition delay range from aminimum value of 35.0 DCN(ignition delay of 4.89 ms)to amaximum value of 59.6 DCN(ignition delay of 2.87 ms).Theaverage DCN result for each sample in the ILS ranged from37.29(average ignition delay of 4.5894 ms)to 56.517(averageignition delay of 3.0281 ms).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 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:2D613 Test Method for Cetane Number of Diesel Fuel OilD975 Specification for Diesel Fuel OilsD1193 Specification for Reagent WaterD4057 Practice for Manual Sampling of Petroleum andPetroleum ProductsD4175 Terminology Relating to Petroleum Products,LiquidFuels,and LubricantsD4177 Practice for Automatic Sampling of Petroleum andPetroleum ProductsD5854 Practice for Mixing and Handling 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 Products 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 StatisticsE832 Specification for Laboratory Filter Papers2.2 EN Standard:3EN 590 Automotive FuelsDieselRequirements and TestMethods2.3 Energy Institute Standard:4IP 41 Ignition Quality of Diesel FuelsCetane Engine TestMethod1This 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 Characteristics.Current edition approved Oct.1,2016.Published October 2016.Originallyapproved in 2006.Last previous edition approved in 2014 as D7170 14.DOI:10.1520/D7170-16.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book of ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM website.3Available from European Committee for standardization.Central Secretariat:rue de Stassart,36,B-1050 Brussels,Belgium.4Available from Energy Institute,61 New Cavendish St.,London,W1G 7AR,U.K.,http:/www.energyinst.org.*A Summary of Changes section appears at the end of this standardCopyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 2.4 Canadian Standards:5CAN/CGSB-3.517-2000 Regular Sulphur Diesel FuelSpecificationCAN/CGSB 3.6-2000 Automotive Low-Sulphur DieselFuelSpecification2.5 DIN Standard:6DIN 73372 Einspritzdsen Grsse T und U3.Terminology3.1 Definitions:3.1.1 accepted reference value(ARV),na value that servesas an agreed-upon reference for comparison and that is derivedas(1)a theoretical or established value,based on scientificprinciples,(2)an assigned value,based on experimental workof some national or international organization,such as the U.S.National Institute of Standards and Technology(NIST),or(3)a consensus value,based on collaborative experimental workunder the auspices of a scientific or engineering group.E4563.1.1.1 DiscussionIn the context of this method,acceptedreference va