ASTM_D_7589_-_15a.pdf

Designation:D758915aStandard Test Method forMeasurement of Effects of Automotive Engine Oils on FuelEconomy of Passenger Cars and Light-Duty Trucks inSequence VID Spark Ignition Engine1,2This standard is issued under the fixed designation D7589;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.INTRODUCTIONPortions of this test method are written for use by laboratories that make use of ASTM TestMonitoring Center(TMC)3services(see Annex A1).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 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 and the Gear Lubricant ReviewCommittee of the Lubricant Review Institute(SAE International)require that a laboratory use theTMC 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)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 not to use the TMC services may simply disregard these portions.1.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 grade oils used in these applications.1.2 The values stated in SI units are to be regarded asstandard.No other units of measurement are included in thisstandard.1.2.1 ExceptionsWhere there is no direct equivalent suchas the units for screw threads,National Pipe threads/diameters,tubing size,and single source supply equipment specifications.Additionally,Brake Fuel Consumption(BSFC)is measured inkilograms per kilowatthour.1.3 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 and health practices and determine the applica-bility of regulatory limitations prior to use.1.4 This test method is arranged as follows:SubjectSectionIntroductionScope1Referenced Documents2Terminology3Summary of Test Method4Significance and Use5Apparatus6General6.1Test Engine Configuration6.2Laboratory Ambient Conditions6.31This test method is under the jurisdiction of ASTM Committee D02 onPetroleum Products,Liquid Fuels,and Lubricants and is the direct responsibility ofSubcommittee D02.B0.10 on Standards Acceleration.Current edition approved Oct.1,2015.Published November 2015.Originallyapproved in 2009.Last previous edition approved in 2015 as D7589 15.DOI:10.1520/D7589-15A.2The multi-cylinder engine test sequences were 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 8,1999.3The ASTM Test Monitoring Center will update changes in this test method bymeans of Information Letters.This edition includes all information letters throughNo.142.Information letters may be obtained from the ASTM Test MonitoringCenter,6555 Penn Avenue,Pittsburgh,PA 15206-4489,Attention:Administrator.4Trademark of General Motors Corporation,300 Renaissance Center,Detroit,MI 48265.*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 States1 SubjectSectionEngine Speed and Torque Control6.4Dynamometer6.4.1Dynamometer Torque6.4.2Engine Cooling System6.5External Oil System6.6Fuel System6.7Fuel Flow Measurement6.7.2Fuel Temperature and Pressure Control to the FuelFlowmeter6.7.3Fuel Temperature and Pressure Control to Engine Fuel Rail6.7.4Fuel Supply Pumps6.7.5Fuel Filtering6.7.6Engine Intake Air Supply6.8Intake Air Humidity6.8.1Intake Air Filtration6.8.2Intake Air Pressure Relief6.8.3Temperature Measurement6.9Thermocouple Location6.9.5AFR Determination6.10Exhaust and Exhaust Back Pressure Systems6.11Exhaust Manifolds6.11.1Laboratory Exhaust System6.11.2Exhaust Back Pressure6