ASTM D8183 - 18

    Standard Test Method for Determination of Indicated Cetane Number (ICN) of Diesel Fuel Oils using a Constant Volume Combustion Chamber—Reference Fuels Calibration Method

    Active Standard ASTM D8183 | Developed by Subcommittee: D02.01

    Book of Standards Volume: 05.05


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    Significance and Use

    5.1 The ICN value determined by this test method provides a measure of the ignition characteristics of diesel fuel oil used in compression ignition engines.

    5.2 This test can be used by engine manufacturers, petroleum refiners, fuel producers and in commerce as a specification aid to relate or match fuels and engines.

    5.3 The relationship of diesel fuel ICN determinations to the full scale, variable speed, variable load diesel engine is not completely understood.

    5.4 This test can be applied to non-conventional diesel fuels.

    5.5 This test determines ICN; it requires a sample of approximately 40 mL and a test time of approximately 25 min.

    5.6 This test method is based on the Energy Institute Test Method IP 617.

    1. Scope

    1.1 This test method covers the quantitative determination of the indicated cetane number (ICN) of conventional diesel fuel oils, and diesel fuel oils containing cetane number improver additives; it is applicable to products typical of Specification D975, Grades No.1-D and 2-D diesel fuel oils, European standard EN 590, and Canadian standards CAN/CGSB-3.517 and CAN/CGSB-3.520. The test method is also applicable to biodiesel, blends of diesel fuel oils containing biodiesel material (for example, materials as specified in Specifications D975, D6751, D7467 and European standards EN 14214, EN 16734, and EN 16709), diesel fuels from non-petroleum origin, hydrocarbon oils, diesel fuel oil blending components, aviation turbine fuels, and polyoxymethylene dimethyl ether (OME).

    1.2 This test method utilizes a constant volume combustion chamber (CVCC) with direct fuel injection into heated compressed air. The apparatus is calibrated using blends of reference fuels. ICN is determined directly from ignition delay using an instrument specific reference fuel calibration curve.

    1.3 This test method and its precision cover the calibrated range of 35 ICN to 85 ICN, inclusive. The analyzer can measure ICN outside the calibrated range, but the precision has not been determined.

    1.4 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.

    1.5 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use. Some specific hazards statements are given in Section 7 on Hazards.

    1.6 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.


    2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.

    ASTM Standards

    D613 Test Method for Cetane Number of Diesel Fuel Oil

    D975 Specification for Diesel Fuel Oils

    D1193 Specification for Reagent Water

    D3703 Test Method for Hydroperoxide Number of Aviation Turbine Fuels, Gasoline and Diesel Fuels

    D4052 Test Method for Density, Relative Density, and API Gravity of Liquids by Digital Density Meter

    D4057 Practice for Manual Sampling of Petroleum and Petroleum Products

    D4175 Terminology Relating to Petroleum Products, Liquid Fuels, and Lubricants

    D4177 Practice for Automatic Sampling of Petroleum and Petroleum Products

    D5854 Practice for Mixing and Handling of Liquid Samples of Petroleum and Petroleum Products

    D6299 Practice for Applying Statistical Quality Assurance and Control Charting Techniques to Evaluate Analytical Measurement System Performance

    D6300 Practice for Determination of Precision and Bias Data for Use in Test Methods for Petroleum Products and Lubricants

    D6708 Practice for Statistical Assessment and Improvement of Expected Agreement Between Two Test Methods that Purport to Measure the Same Property of a Material

    D6751 Specification for Biodiesel Fuel Blend Stock (B100) for Middle Distillate Fuels

    D7467 Specification for Diesel Fuel Oil, Biodiesel Blend (B6 to B20)

    European Standards

    EN 14214 Liquid petroleum productsFatty acid methyl esters (FAME) for use in diesel engines and heating applicationsRequirements and test methods

    EN 16709

    EN 16734 Automotive FuelsAutomotive B10 FuelRequirements and test methods

    EN 590


    ICS Code

    ICS Number Code 75.160.20 (Liquid fuels)

    Referencing This Standard
    Link Here
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    DOI: 10.1520/D8183-18

    Citation Format

    ASTM D8183-18, Standard Test Method for Determination of Indicated Cetane Number (ICN) of Diesel Fuel Oils using a Constant Volume Combustion Chamber—Reference Fuels Calibration Method, ASTM International, West Conshohocken, PA, 2018, www.astm.org

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