1、Designation:D732015aStandard Test Method forEvaluation of Automotive Engine Oils in the Sequence IIIG,Spark-Ignition Engine1This standard is issued under the fixed designation D7320;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the
2、 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)
3、2services(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 t
4、est 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 Internatio
5、nal)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 le
6、vel 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.Scop
7、e*1.1 This test method covers an engine test procedure forevaluating automotive engine oils for certain high-temperatureperformance characteristics,including oil thickening,varnishdeposition,oil consumption,as well as engine wear.Such oilsinclude both single viscosity grade and multiviscosity gradeo
8、ils that are used in both spark-ignition,gasoline-fueledengines,as well as in diesel engines.1.1.1 Additionally,with nonmandatory supplementalrequirements,a IIIGA Test(Mini Rotary Viscometer and ColdCranking Simulator measurements),a IIIGVS Test(EOTviscosity increase measurement),or a IIIGB Test(pho
9、sphorousretention measurement)can be conducted.These supplementaltest procedures are contained in Appendixes Appendix X1,Appendix X2,and Appendix X3,respectively.NOTE1Companion test methods used to evaluate engine oil perfor-mance for specification requirements are discussed in SAE J304.1.2 The valu
10、es stated in SI units are to be regarded asstandard.No other units of measurement are included in thisstandard.1.2.1 ExceptionWhere there is no direct SI equivalentsuch as screw threads,national pipe threads/diameters,andtubing size.1.3 This standard does not purport to address all of thesafety conc
11、erns,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.Specific warningstatements are provided in 6.14.1.1 and 7.1.1.4 This test method is a
12、rranged as follows:SectionIntroductionScope1Referenced Documents2Terminology3Summary of Test Methods4Significance and Use5Apparatus6Laboratory6.11This test method is under the jurisdiction of ASTM Committee D02 onPetroleum Products,Liquid Fuels,and Lubricants and is the direct responsibility ofSubco
13、mmittee D02.B0.01 on Passenger Car Engine Oils.Current edition approved Oct.1,2015.Published October 2015.Originallyapproved in 2006.Last previous edition approved in 2015 as D7320 15.DOI:10.1520/D7320-15A.2Until the next revision of this test method,the ASTM Test Monitoring Centerwill update change
14、s in the test method by means of information letters.Informationletters may be obtained from theASTM Test Monitoring Center,6555 PennAvenue,Pittsburgh,PA 15206-4489.Attention:Administrator.This edition incorporatesrevisions in all information letters through No.151.*A Summary of Changes section appe
15、ars at the end of this standardCopyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 SectionDrawings6.2Specified Equipment6.3Test Engine6.4Engine Parts6.4.1Engine Speed and Load Control6.5Fluid Conditioning Module6.6Engine Cooling System6.6.1Fl
16、ushing Tank6.7Coolant Mixing Tank6.8Condenser Cooling Systems6.9Engine Oil-Cooling System6.10Fuel System6.11Induction Air Supply Humidity,Temperature,and Pressure6.12Temperature Measurement6.13Thermocouple Location6.13.1Air-to-Fuel Ratio Determination6.14Injector Flow Testing6.14.1Exhaust and Exhaust Back Pressure Systems6.15Blowby Flow Rate Measurement6.16Pressure Measurement and Pressure Sensor Location6.17Reagents and Materials7Test Fuel7.1Engine and Condenser Coolant7.2Coolant Additive7.3Coo