ASTM WK63224

    Revision of D2699 - 17 Standard Test Method for Research Octane Number of Spark-Ignition Engine Fuel

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    Active Standard: D2699 - 19e1

    Developed by Subcommittee: D02.01 | Committee D02 | Contact Staff Manager



    guide table; isooctane; knock intensity; n-heptane; research octane number; spark-ignition engine fuel performance; toluene standardization fuel;;


    At a D02.01 Working Group meeting held on Thursday, Dec. 7, 2017, an attendee Mr. Rudolf Terschek of Rofa made a presentation in which a graph was shown from data taken from Table A4.4 relating Barometric Pressure vs Cylinder Height Correction. It was apparent in this graph, where the ordinate was Digital Counter Correction and the abscissa was Barometric Pressure, that a reasonably smooth line should go through all of the data points of this graph of the Figure. It can be clear that for the barometric Pressure of 22.5 in. Hg there is a kink in what should be a smooth graph. It was suggested that a mistake was made likely during typing (many years ago), and the table value at 22.5 in.Hg should be 208 not 206.

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    Work Item Status

    Date Initiated:

    Technical Contact:
    Dan Hogan


    D02 (18-05)

    Ballot Item Approved