1、Designation:D822621a1Standard Test Method forMeasurement of Effects of Automotive Engine Oils on FuelEconomy of Passenger Cars and Light-Duty Trucks inSequence VIF Spark Ignition Engine1,2This standard is issued under the fixed designation D8226;the number immediately following the designation indic
2、ates 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.1NOTEEditorially updated TMC governance information in June 2
3、022.INTRODUCTIONPortions of this test method are written for use by laboratories that make use of ASTM TestMonitoring Center(TMC)3services(see Annex A1 Annex A4).The TMC provides reference oils and engineering and statistical services to laboratories that desireto produce test results that are stati
4、stically similar to those produced by laboratories previouslycalibrated by the TMC.In general,the Test Purchaser decides if a calibrated test stand is to be used.Organizations such as the American Chemistry Council require that a laboratory utilize the TMCservices as part of their test registration
5、process.In addition,the American Petroleum Institute(API)and the Gear Lubricant Review Committee of the Lubricant Review Institute(SAE International)require that a laboratory use the TMC services in seeking qualification of oils against theirspecifications.The advantage of using the TMC services to
6、calibrate test stands is that the test laboratory(andhence the Test Purchaser)has an assurance that the test stand was operating at the proper level of testseverity.It should also be borne in mind that results obtained in a non-calibrated test stand may notbe the same as those obtained in a test sta
7、nd participating in the ASTM TMC services process.Laboratories that choose not to use the TMC services may simply disregard these portions.ASTM International policy is to encourage the development of test procedures based on genericequipment.It is recognized that there are occasions where critical/s
8、ole-source equipment has beenapproved by the technical committee(surveillance panel/task force)and is required by the testprocedure.The technical committee that oversees the test procedure is encouraged to clearly identifyif the part is considered critical in the test procedure.If a part is deemed t
9、o be critical,ASTMencourages alternative suppliers to be given the opportunity for consideration of supplying the criticalpart/component providing they meet the approval process set forth by the technical committee.An alternative supplier can start the process by initiating contact with the technica
10、l committee(current chairs shown on ASTM TMC website).The supplier should advise on the details of the partthat is intended to be supplied.The technical committee will review the request and determinefeasibility of an alternative supplier for the requested replacement critical part.In the event that
11、 areplacement critical part has been identified and proven equivalent the sole-source supplier footnoteshall be removed from the test procedure.1This test method is under the jurisdiction of ASTM Committee D02 onPetroleum Products,Liquid Fuels,and Lubricants and is the direct responsibility ofSubcom
12、mittee D02.B0.10 on Standards Acceleration.Current edition approved April 1,2021.Published April 2021.Originallyapproved in 2018.Last previous edition approved in 2021 as D8226 21.DOI:10.1520/D8226-21AE01.2The multi-cylinder engine test sequences were originally developed by anASTM Committee D02 gro
13、up.Subsequently,the procedures were published in anASTM special technical publication.The Sequence VIB was published as ResearchReport RR:D02-1469,dated April 8,1999.3Until the next revision of this test method,the ASTM Test Monitoring Centerwill update changes in the test method by means of informa
14、tion letters.Informationletters may be obtained from the ASTM Test Monitoring Center,203 ArmstrongDrive,Freeport,PA 16229.Attention:Director.This edition incorporates revisionsin all information Letters through No.20-4.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,
15、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 T
16、echnical Barriers to Trade(TBT)Committee.11.Scope*1.1 This test method covers an engine test procedure for themeasurement of the effects of automotive engine oils on thefuel economy of passenger cars and light-duty trucks withgross vehicle weight 3856 kg or less.The tests are conductedusing a specified spark-ignition engine with a displacement of3.6 L(General Motors)4on a dynamometer test stand.Itapplies to multi viscosity oils used in these applications.1.2 The values stated in SI units are to
