1、Designation: D6709 14aStandard Test Method forEvaluation of Automotive Engine Oils in the Sequence VIIISpark-Ignition Engine (CLR Oil Test Engine)1This standard is issued under the fixed designation D6709; the number immediately following the designation indicates the year oforiginal adoption or, in
2、 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.INTRODUCTIONThis test method can be used by any properly equipped laboratory without outside as
3、sistance.However, the ASTM Test Monitoring Center (TMC)2offers a very valuable service to the testlaboratory; the Center provides reference oils and an assessment of the test results obtained on thoseoils by the laboratory (see Appendix X1). By this means, the laboratory will know whether their useo
4、f the test method gives results statistically similar to those obtained by other laboratories.Furthermore, various agencies require that a laboratory utilize the TMC services in seekingqualification of oils against specifications. For example, the American Petroleum Institute (API)imposes such a req
5、uirement, in connection with several engine lubricating oil specifications.Accordingly, this test method is written for use by laboratories that utilize the TMC services.Laboratories that choose not to use those services may simply ignore those portions of the test methodthat refer to the TMC.This t
6、est method may be modified by means of Information Letters issued by the TMC. In addition,the TMC may issue supplementary memoranda related to the test method (see Annex A3).1. Scope*1.1 This test method covers the evaluation of automotiveengine oils (SAE grades 0W, 5W, 10W, 20, 30, 40, and 50, andm
7、ulti-viscosity grades) intended for use in spark-ignitiongasoline engines. The test procedure is conducted using acarbureted, spark-ignition Cooperative Lubrication Research(CLR) Oil Test Engine (also referred to as the Sequence VIIItest engine in this test method) run on unleaded fuel. An oil iseva
8、luated for its ability to protect the engine and the oil fromdeterioration under high-temperature and severe service con-ditions. The test method can also be used to evaluate theviscosity stability of multi-viscosity-graded oils. Companiontest methods used to evaluate engine oil performance forspeci
9、fication requirements are discussed in the latest revisionof Specification D4485.1.2 Correlation of test results with those obtained in auto-motive service has not been established. Furthermore, theresults obtained in this test are not necessarily indicative ofresults that will be obtained in a full
10、-scale automotive spark-ignition or compression-ignition engine, or in an engineoperated under conditions different from those of the test. Thetest can be used to compare one oil with another.1.3 The values stated in SI units are to be regarded asstandard. No other units of measurement are included
11、in thisstandard.1.3.1 ExceptionsThe values stated in inch-pounds forcertain tube measurements, screw thread specifications, andsole source supply equipment are to be regarded as standard.1.3.1.1 The bearing wear in the text is measured in gramsand described as weight loss, a non-SI term.1.4 This sta
12、ndard 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. Specific precau-tionary st
13、atements are provided throughout this test method.1.5 This test method is arranged as follows:Subject SectionIntroductionScope 1Referenced Documents 21This test method is under the jurisdiction of ASTM Committee D02 onPetroleum Products, Liquid Fuels, and Lubricants and is the direct responsibility
14、ofSubcommittee D02.B0.01 on Passenger Car Engine Oils.Current edition approved Dec. 1, 2014. Published January 2015. Originallyapproved in 2001. Last previous edition approved in 2014 as D6709 14. DOI:10.1520/D6709-14A.2Until the next revision of this test method, the ASTM Test Monitoring Centerwill
15、 update changes in this test method by means of Information Letters. Informa-tion Letters may be obtained from the ASTM Test Monitoring Center, 6555 PennAvenue, Pittsburgh, PA 15202-4489, Attention: Administrator. This edition incor-porates revisions in all Information Letters through No. 131.*A Sum
16、mary 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 States1Terminology 3Summary of Test Method 4Before Test Starts 4.1Power Section Installation 4.2Engine Operation (Break-in) 4.3Engine
17、Operation (Test/Samples) 4.4Stripped Viscosity 4.5Test Completion (BWL) 4.6Significance and Use 5Evaluation of Automotive oils 5.1Stay in Grade Capabilities 5.2Correlation of Results 5.3Use 5.4Apparatus 6Test Engineering, Inc. 6.1Fabricated or Specially Prepared Items 6.2Instruments and Controls 6.3
18、Procurement of Parts 6.4Reagents and Materials 7Reagents 7.1Cleaning Materials 7.2Expendable Power Section-Related Items 7.3Power Section Coolant 7.4Reference Oils 7.5Test Fuel 7.6Test Oil Sample Requirements 8Selection 8.1Inspection 8.2Quantity 8.3Preparation of Apparatus 9Test Stand Preparation 9.
19、1Conditioning Test Run on Power Section 9.2General Power Section Rebuild Instructions 9.3Reconditioning of Power Section After Each Test 9.4Calibration 10Power Section and Test Stand Calibration 10.1Instrumentation Calibration 10.2Calibration of AFR Measurement Equipment 10.3Calibration of Torque Wr
20、enches 10.4Engine Operating Procedure 11Run-In and Flush 11.1Test Operating Conditions 11.2Air-Fuel Ratio and Spark Advance 11.3Air, Off-Gas and Blowby Measurement 11.4Unscheduled Shutdowns 11.5Oil Sampling and Oil Addition 11.6Periodic Measurements 11.7Final Oil Drain and Oil Consumption Computatio
21、n 11.8Operational Validity Criteria 11.9Test Completion 11.10Determination of Test Results 12Oil Analysis 12.1Test Bearing Weight Loss Determination 12.2Report 13Precision and Bias 14Precision 14.1Bias 14.2Use of ASTM Rounding 15Keywords 16ANNEXESMeasurement of Connecting Rod Bearing Clearance andJo
22、urnal TaperAnnex A1Measurement of Main Bearing Clearance Annex A2The ASTM Test Monitoring Center Calibration Program Annex A3Measurement of Piston-to-Sleeve Clearance Annex A4Control Chart Technique for a Laboratorys SeverityAdjustment (SA)Annex A5Recommended New Liner Honing Procedure Annex A6Seque
23、nce VIII Oil Priming Procedure Annex A7Alternative Crankcase Breather Configuration Annex A8Connecting Rod Bearing Cleaning Procedure Annex A9Electronic Ignition Conversion Annex A10System Response Procedure Annex A11Air-Fuel Ratio Measurement Annex A12Lead Decontamination Procedure Annex A13Stay-in
24、-Grade Oil Analysis Procedure Annex A14Crankshaft Rear Seal Conditioning Annex A15Report Forms and Data Dictionary Annex A16Test Fuel Specification Annex A17APPENDIXESRole of the ASTM Test Monitoring Center and the CalibrationProgramAppendix X1Suggested Method for Salvaging Camshaft Bearing Journals
25、 Appendix X2Data Log Sheets Appendix X32. Referenced Documents2.1 ASTM Standards:3D86 Test Method for Distillation of Petroleum Products atAtmospheric PressureD130 Test Method for Corrosiveness to Copper from Petro-leum Products by Copper Strip TestD235 Specification for Mineral Spirits (Petroleum S
26、pirits)(Hydrocarbon Dry Cleaning Solvent)D240 Test Method for Heat of Combustion of Liquid Hy-drocarbon Fuels by Bomb CalorimeterD323 Test Method for Vapor Pressure of Petroleum Products(Reid Method)D381 Test Method for Gum Content in Fuels by Jet Evapo-rationD445 Test Method for Kinematic Viscosity
27、 of Transparentand Opaque Liquids (and Calculation of Dynamic Viscos-ity)D525 Test Method for Oxidation Stability of Gasoline (In-duction Period Method)D1319 Test Method for Hydrocarbon Types in Liquid Petro-leum Products by Fluorescent Indicator AdsorptionD2422 Classification of Industrial Fluid Lu
28、bricants by Vis-cosity SystemD2699 Test Method for Research Octane Number of Spark-Ignition Engine FuelD2700 Test Method for Motor Octane Number of Spark-Ignition Engine FuelD3231 Test Method for Phosphorus in GasolineD3237 Test Method for Lead in Gasoline byAtomicAbsorp-tion SpectroscopyD3343 Test
29、Method for Estimation of Hydrogen Content ofAviation FuelsD4052 Test Method for Density, Relative Density, and APIGravity of Liquids by Digital Density MeterD4175 Terminology Relating to Petroleum, PetroleumProducts, and LubricantsD4294 Test Method for Sulfur in Petroleum and PetroleumProducts by En
30、ergy Dispersive X-ray Fluorescence Spec-trometryD4485 Specification for Performance of Active API ServiceCategory Engine OilsD4815 Test Method for Determination of MTBE, ETBE,TAME, DIPE, tertiary-Amyl Alcohol and C1to C4Alco-hols in Gasoline by Gas ChromatographyD7422 Test Method for Evaluation of D
31、iesel Engine Oils inT-12 Exhaust Gas Recirculation Diesel Engine3For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org. For Annual Book of ASTMStandards volume information, refer to the standards Document Summary page onthe ASTM websi
32、te.D6709 14a2E29 Practice for Using Significant Digits in Test Data toDetermine Conformance with SpecificationsE191 Specification forApparatus For Microdetermination ofCarbon and Hydrogen in Organic and Organo-MetallicCompounds2.2 SAE Standards:4J183 Engine Oil Performance and Engine Service Classif
33、i-cation (Other Than “Energy-Conserving”)J304 Engine Oil Tests3. Terminology3.1 Definitions:3.1.1 air-fuel ratio, nin internal combustion engines, themass ratio of air-to-fuel in the mixture being induced into thecombustion chambers. D41753.1.2 automotive, adjdescriptive of equipment associatedwith
34、self-propelled machinery, usually vehicles driven byinternal combustion engines. D44853.1.3 blind reference oil, na reference oil, the identity ofwhich is unknown by the test facility.3.1.3.1 DiscussionThis is a coded reference oil that issubmitted by a source independent from the test facility. D41
35、753.1.4 blowby, nin internal combustion engines, that por-tion of the combustion products and unburned air/fuel mixturethat leaks past piston rings into the engine crankcase duringoperation. D41753.1.5 critical parts, nthose components used in the testthat are known to affect test severity.3.1.6 non
36、compounded engine oil, na lubricating oil hav-ing a viscosity within the range of viscosities of oils normallyused in engines, and that may contain anti-foam agents or pourdepressants, or both, but not other additives. D41753.1.6.1 DiscussionIn this test method noncompounded oilis also known as buil
37、d-up oil.3.1.7 non-standard test, na test that is not conducted inconformance with the requirements in the standard testmethod; such as running on an uncalibrated test stand, usingdifferent test equipment, applying different equipment assem-bly procedures, or using modified operating conditions. D41
38、753.1.8 test start, nintroduction of test oil into the engine.D41753.1.9 wear, nthe loss of material from a surface, generallyoccurring between two surfaces in relative motion, and result-ing from mechanical or chemical action or a combination ofboth. D74223.2 Definitions of Terms Specific to This S
39、tandard:3.2.1 accessory case, nthe mounting base containing thebalancing mechanism, flywheel, and final driveshaft for thepower section of the CLR engine.3.2.2 build-up oil, nsee 3.1.6, noncompounded engine oil.3.2.3 calibrated power section/test stand combination,none that has completed an operatio
40、nally valid reference oiltest within the previous six months, the results of which fallwithin industry severity and precision limits as published bythe TMC.3.2.4 conditioning test run, na full-length Sequence VIIItest using a TMC-designated reference oil in a new or newlyrebuilt power section to pre
41、pare the cast iron parts beforeconducting routine standard tests with the power section.3.2.5 emergency shutdown, nthe procedure for turning offthe engines ignition without using the prescribed enginecool-down period.3.2.6 full-length test, na test of an engine oil conductedusing a power section and
42、 a test stand that runs 4.5 h run-in,2 h flush and 40 h at test conditions. (See 10.1.3.1, exceptionfor 10 h stay in grade test).3.2.7 new power section, nan engine power section con-sisting of either a new crankcase or complete power sectionthat has no previous oil test history.3.2.8 off-gas, ngas
43、exiting the power section crankcasebreather.3.2.9 off-test time, nany time that the engine is notoperating at the prescribed test conditions.3.2.10 oil gallery side cover plate, ncrankcase cover platethat contains the oil gallery and provision for mounting anddriving the oil pump and ignition assemb
44、ly.3.2.11 operationally valid test, nan engine oil test that hasbeen conducted in accordance with the conditions listed in thistest method.3.2.12 power section, nthe combination of the crankcaseassembly, the cylinder block assembly, and the cylinder headassembly, all of which are attached to the acc
45、essory case.3.2.13 reconditioned power section, nan engine powersection which has been disassembled, cleaned, and reas-sembled according to the detailed procedures5after completionof either a conditioning test run or a full-length CLR engine oiltest.3.2.14 reference oil test, na standard Sequence VI
46、II en-gine oil test of a reference oil designated by the TMC,conducted to ensure that power section and test stand severityfalls within industry limits.3.2.15 run-in and flush, nthe initial 4.5 h operation of anew, rebuilt, or reconditioned power section at the beginning ofeither a conditioning test
47、 run or a full-length test.3.2.16 scheduled downtime, noff-test time that is specifi-cally allowed to include warm-up and cool-down periods aswell as shutdown and intermediate bearing weight loss mea-surements.3.2.17 shutdown, nthe procedure for turning off the en-gines ignition following the prescr
48、ibed engine cool-downperiod.4Available from Society of Automotive Engineers, Inc., 400 CommonwealthDrive, Warrendale, PA 15096. Request SAE Handbook Vol 3. This standard is notavailable separately.5Refer to Instructions for Assembly and Disassembly of the CLR Oil TestEngine, available from Test Engi
49、neering, Inc., 12718 Cimarron Path, San Antonio,TX 78249.D6709 14a33.2.18 standard test, nan operationally valid, full-lengthSequence VIII test conducted with a calibrated power sectionand test stand in accordance with the conditions listed in thistest method.3.2.19 stay-in-grade (stripped viscosity), nthe viscosity ofthe test oil after removal of volatile components and solids,according to the procedure shown in Annex A14.3.2.20 test oil, nan oil subjected to a Sequence VIIIengine oil test.3.2.20.1 DiscussionIt can be any oil selected by thela
