ASTM_D_909_-_22.pdf

Designation:D90922Method 6012.6Federal TestMethod Standard No.791bStandard Test Method forSupercharge Rating of Spark-Ignition Aviation Gasoline1This standard is issued under the fixed designation D909;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.This standard has been approved for use by agencies of the U.S.Department of Defense.1.Scope*1.1 This laboratory test method covers the quantitativedetermination of supercharge ratings of spark-ignition aviationgasoline.The sample fuel is tested using a standardized singlecylinder,four-stroke cycle,indirect injected,liquid cooled,CFR engine run in accordance with a defined set of operatingconditions.1.2 The supercharge rating is calculated by linear interpo-lation of the knock limited power of the sample compared tothe knock limited power of bracketing reference fuel blends.1.3 The rating scale covers the range from 85 octanenumber to Isooctane+6.0 mL TEL U.S.gal.1.4 The values of operating conditions are stated in SI unitsand are considered standard.The values in parentheses are thehistorical inch-pound units.The standardized CFR enginemeasurements and reference fuel concentrations continue to bein historical units.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,health,and environmental practices and deter-mine the applicability of regulatory limitations prior to use.Specific precautionary statements are given in Annex A1.1.6 This international standard was developed in accor-dance with internationally recognized principles on standard-ization established in the Decision on Principles for theDevelopment of International Standards,Guides and Recom-mendations issued by the World Trade Organization TechnicalBarriers to Trade(TBT)Committee.2.Referenced Documents2.1 ASTM Standards:2D1193 Specification for Reagent WaterD2268 Test Method for Analysis of High-Purity n-Heptaneand Isooctane by Capillary Gas ChromatographyD3237 Test Method for Lead in Gasoline byAtomicAbsorp-tion SpectroscopyD3341 Test Method for Lead in GasolineIodine Mono-chloride MethodD4057 Practice for Manual Sampling of Petroleum andPetroleum ProductsD4175 Terminology Relating to Petroleum Products,LiquidFuels,and LubricantsD5059 Test Methods for Lead and Manganese in Gasolineby X-Ray Fluorescence SpectroscopyD6299 Practice for Applying Statistical Quality Assuranceand Control Charting Techniques to Evaluate AnalyticalMeasurement System PerformanceE344 Terminology Relating to Thermometry and Hydrom-etryE456 Terminology Relating to Quality and Statistics2.2 CFR Engine Manuals:3CFR F-4 Form 846 Supercharge Method Aviation GasolineRating Unit Installation ManualCFR F-4 Form 893 Supercharge Method Aviation GasolineRating Unit Operation&Maintenance2.3 Energy Institute Standard:4IP 224/02 Determination of Low Lead Content of LightPetroleum Distillates by Dithizone Extraction and Colo-rimetric Method1This 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 May 1,2022.Published May 2022.Originallyapproved in 1958.Last previous edition approved in 2021 as D909 21.DOI:10.1520/D0909-22.2For 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 CFR Engines,Inc.,N8 W22577,Johnson Dr.,Pewaukee,WI53186.4Available 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 StatesThis international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for theDevelopment of International Standards,Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade(TBT)Committee.13.Terminology3.1 Definitions:3.1.1 accepted reference value,na value that serves as anagreed-upon reference for comparison,and which is derivedas:(1)a theoretical or established value,based on scientificprinciples,or(2)an assigned or certified value,based onexperimental work of some national or internationalorganization,or(3)a consensus or certified value,based oncollaborative experimental work under the auspices of ascientific or engineering group.E4563.1.1.1 DiscussionIn the context of this test method,accept