1、Designation:D811422Standard Test Method forMeasurement of Effects of Automotive Engine Oils on FuelEconomy of Passenger Cars and Light-Duty Trucks inSequence VIE Spark Ignition1,2This standard is issued under the fixed designation D8114;the number immediately following the designation indicates the
2、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.INTRODUCTIONPortions of this test method are written for use by labora
3、tories 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 statistically similar to those produced by laboratories previouslycalibrated by
4、 the TMC.In general,the Test Purchaser decides if a calibrated test stand is to be used.Organizations such astheAmerican Chemistry Council require that a laboratory utilize the TMC services as part of their testregistration process.In addition,the American Petroleum Institute(API)and the Gear Lubric
5、antReview Committee of the Lubricant Review Institute(SAE International)require that a laboratory usethe TMC services in seeking qualification of oils against their specifications.The advantage of using the TMC services to calibrate test stands is that the test laboratory(andhence the Test Purchaser
6、)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 stand participating in the ASTM TMC services process.Laboratories that choose no
7、t 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/sole-source equipment has beenapproved by the technical committee(surveillance
8、 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 to be critical,ASTMencourages alternative suppliers to be given the opportunit
9、y 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 technical committee(current chairs shown on ASTM TMC website).The supplier should adv
10、ise 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 areplacement critical part has been identified and proven equivalent the sol
11、e-source supplier footnoteshall be removed from the test procedure.1.Scope*1.1 This test method covers an engine test procedure for themeasurement of the effects of automotive engine oils on the1This test method is under the jurisdiction of ASTM Committee D02 onPetroleum Products,Liquid Fuels,and Lu
12、bricants and is the direct responsibility ofSubcommittee D02.B0.01 on Passenger Car Engine Oils.Current edition approved April 1,2022.Published April 2022.Originallyapproved in 2017.Last previous edition approved in 2021 as D8114 21a.DOI:10.1520/D8114-22.2The multi-cylinder engine test sequences wer
13、e originally developed by anASTM Committee D02 group.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 upd
14、ate changes in the test method by means of Information Letters.InformationLetters may be obtained from the ASTM Test Monitoring Center,203 ArmstrongDrive,Freeport,PA 16229,www.astmtmc.org.Attention:Director.This editionincorporates revisions in all Information Letters through No.20-6.*A Summary of C
15、hanges 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 Decis
16、ion on Principles for theDevelopment of International Standards,Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade(TBT)Committee.1fuel 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
