ASTM_D_5598_-_20.pdf

Designation:D559820Standard Test Method forEvaluating Unleaded Automotive Spark-Ignition Engine Fuelfor Electronic Port Fuel Injector Fouling1This standard is issued under the fixed designation D5598;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.INTRODUCTIONThis test method is based on a test procedure developed by the Coordinating Research Council(CRC)and maintains as much commonality as possible with the original test.A similar test methodis described in the California Air Resource Board(CARB)report,“Test Method for Evaluating PortFuel Injector Deposits in Vehicle Engines.”Driveability problems in PFI automobiles were first reported in 1984.These driveability problemswere caused by deposits in the tips of pintle-type fuel injectors.In response to this problem,the CRCdeveloped a program to evaluate a method of testing PFI deposit-forming tendencies in gasolines.D235-h test cycle consisting of 15 min of operation at 88 kph(55 mph)followed by a 45 min soakperiod was used for the program.This test cycle showed statistically significant differences indeposit-forming tendencies of the test fuels on the vehicles fuel injectors.The results of the CRCprogram are discussed in CRC Report No.565,2and SAE Paper 890213.31.Scope*1.1 This test method covers a vehicle test procedure toevaluate the tendency of an unleaded spark-ignition engine fuelto foul electronic port fuel injectors(PFI).1.2 The test method is applicable to unleaded spark-ignitionengine fuels which may contain antioxidants,corrosioninhibitors,metal deactivators,dyes,deposit control additives,and oxygenates.1.3 The values stated in SI units are to be regarded as thestandard.The values in parentheses are provided for informa-tion only.1.4 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 throughout this testmethod.NOTE1If there is any doubt as to the latest edition of Test MethodD5598,contact ASTM Headquarters.Other properties of significance tospark-ignition engine fuel are described in Specification D4814.1.5 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:4D235 Specification for Mineral Spirits(Petroleum Spirits)(Hydrocarbon Dry Cleaning Solvent)D4175 Terminology Relating to Petroleum Products,LiquidFuels,and LubricantsD4814 Specification for Automotive Spark-Ignition EngineFuelD5500 Test Method for Vehicle Evaluation of Unleaded1This test method is under the jurisdiction of ASTM Committee D02 onPetroleum Products,Liquid Fuels,and Lubricants and is the direct responsibility ofSubcommittee D02.A0.01 on Gasoline and Gasoline-Oxygenate Blends.Current edition approved April 1,2020.Published April 2020.Originallyapproved in 1994.Last previous edition approved in 2019 as D5598 19.DOI:10.1520/D5598-20.2CRC Report No.565“A Program to Evaluate a Vehicle Test Method for PortFuel Injector Deposit-Forming Tendencies of Unleaded Base Gasolines,”February1989.Available from Coordinating Research Council,Inc.,5755 North PointParkway Suite 265 Alpharetta,GA 30022,www.crcao.org.3Tupa,Taniguchi,Benson,“A Vehicle Test Technique for Studying Port FuelInjector DepositsA Coordinating Research Council Program,”Society of Auto-motive Engineers(SAE)Technical Paper Series:Paper No.890213,1989,Availablefrom Society of Automotive Engineers International,400 Commonwealth Dr.,Warrendale,PA 15096.4For 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.*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.Automotive Spark-Ignition Engine Fuel for Intake ValveDeposit Formation2.2 ANSI Standard:5MC 96.1 Temperature Measurement Thermocouples2.3 Other Standards:“T