1、Designation:D550020aStandard Test Method forVehicle Evaluation of Unleaded Automotive Spark-IgnitionEngine Fuel for Intake Valve Deposit Formation1This standard is issued under the fixed designation D5500;the number immediately following the designation indicates the year oforiginal adoption or,in t
2、he 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 a vehicle test procedure forevaluation of intake valve deposit for
3、mation of unleadedspark-ignition engine fuels.This test method uses a 1985model BMW 318i2vehicle.Mileage is accumulated followinga specified driving schedule on either public road or test track.This test method is adapted from the original BMW of NorthAmerica/Southwest Research Institute Intake Valv
4、e Deposittest and maintains as much commonality as possible with theoriginal test.Chassis dynamometers shall not be used for thistest procedure as the BMW NA/SwRI IVD Test was notintended to be applicable to chassis dynamometers and nocorrelation between road operation and chassis dynamometershas be
5、en established.NOTE1If there is any doubt as to the latest edition of Test MethodD5500,contact ASTM International.1.2 The values stated in SI units are to be regarded asstandard.The values given in parentheses after SI units areprovided for information only and are not considered standard.1.3 This s
6、tandard 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 state
7、ments on hazards are given throughout this testmethod.1.4 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
8、 by the World Trade Organization TechnicalBarriers to Trade(TBT)Committee.2.Referenced Documents2.1 ASTM Standards:3D235 Specification for Mineral Spirits(Petroleum Spirits)(Hydrocarbon Dry Cleaning Solvent)D4175 Terminology Relating to Petroleum Products,LiquidFuels,and LubricantsD4814 Specificatio
9、n for Automotive Spark-Ignition EngineFuel2.2 ANSI Standard:MC 96.1 American National Standard for Temperature Mea-surement Thermocouples43.Terminology3.1 For general terminology,refer to Terminology D4175.3.2 Definitions:3.2.1 base fuel,nin automotive spark-ignition enginefuels,a material composed
10、primarily of hydrocarbons that mayalso contain oxygenates,anti-oxidants,corrosion inhibitors,metal deactivators,and dyes but does not contain depositcontrol or lead additives.3.2.1.1 DiscussionA jurisdiction may set limits on leadcontent from all sources.3.2.2 deposit control additive,nmaterial adde
11、d to the fuelto prevent or remove deposits in one or more of the engine fuel,intake,and combustion systems.3.2.2.1 DiscussionFor the purpose of this test method,theperformance evaluation of a deposit control additive is limitedto the tulip area of intake valves.3.2.3 driveability,nin vehicles equipp
12、ed with internalcombustion engines,the quality of a vehicles performancecharacteristics under a range of conditions as perceived by theoperator.D48143.2.3.1 DiscussionThe operating conditions may includecold starting and warm-up,acceleration,idling,and hot start.1This test method is under the jurisd
13、iction 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 June 1,2020.Published June 2020.Originallyapproved in 1994.Last previous edition approved in 2020
14、 as D5500 20.DOI:10.1520/D5500-20A.2Originally obtained from BMW NAnew car dealerships in the United States asa 1985 model year vehicle,the vehicle is currently available through the usedvehicle market.3For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service
15、 at serviceastm.org.For Annual Book of ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM website.4Available from American National Standards Institute(ANSI),25 W.43rd St.,4th Floor,New York,NY 10036,http:/www.ansi.org.*A Summary of Changes section appears at th
16、e 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.The performance characteristics may include engine hesit