1、Designation: D6709 14aD6709 15Standard 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 adoptio
2、n 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.INTRODUCTIONThis test method can be used by any properly equipped laboratory without ou
3、tside assistance.However, the ASTM Test Monitoring Center (TMC)2 offers 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 t
4、heir useof 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 s
5、uch a requirement, 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 T
6、MC.This test 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 automotive engine oils (SAE grades 0W, 5W, 10W, 20, 30, 40, an
7、d 50, andmulti-viscosity grades) intended for use in spark-ignition gasoline engines. The test procedure is conducted using a carbureted,spark-ignition Cooperative Lubrication Research (CLR) Oil Test Engine (also referred to as the Sequence VIII test engine in thistest method) run on unleaded fuel.
8、An oil is evaluated for its ability to protect the engine and the oil from deterioration underhigh-temperature and severe service conditions. The test method can also be used to evaluate the viscosity stability ofmulti-viscosity-graded oils. Companion test methods used to evaluate engine oil perform
9、ance for specification requirements arediscussed in the latest revision of Specification D4485.1.2 Correlation of test results with those obtained in automotive service has not been established. Furthermore, the resultsobtained in this test are not necessarily indicative of results that will be obta
10、ined in a full-scale automotive spark-ignition orcompression-ignition engine, or in an engine operated under conditions different from those of the test. The test can be used tocompare one oil with another.1.3 The values stated in SI units are to be regarded as standard. No other units of measuremen
11、t are included in this standard.1.3.1 ExceptionsThe values stated in inch-pounds for certain tube measurements, screw thread specifications, and sole sourcesupply equipment are to be regarded as standard.1.3.1.1 The bearing wear in the text is measured in grams and described as weight loss, a non-SI
12、 term.1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibilityof the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatorylimitations prior to use. Specific p
13、recautionary statements are provided throughout this test method.1 This test method is under the jurisdiction ofASTM Committee D02 on Petroleum Products, Liquid Fuels, and Lubricants and is the direct responsibility of SubcommitteeD02.B0.01 on Passenger Car Engine Oils.Current edition approved Dec.
14、1, 2014April 1, 2015. Published January 2015April 2015. Originally approved in 2001. Last previous edition approved in 2014 asD6709 14.D6709 14a. DOI: 10.1520/D6709-14A.10.1520/D6709-15.2 Until the next revision of this test method, theASTM Test Monitoring Center will update changes in this test met
15、hod by means of Information Letters. Information Lettersmay be obtained from the ASTM Test Monitoring Center, 6555 Penn Avenue, Pittsburgh, PA 15202-4489, Attention: Administrator. This edition incorporates revisions in allInformation Letters through No. 131.142.This document is not an ASTM standard
16、 and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Becauseit may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases on
17、ly the current versionof the standard as published by ASTM is to be considered the official document.*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 States11.5 This test method
18、 is arranged as follows:Subject SectionIntroductionScope 1Referenced Documents 2Terminology 3Summary of Test Method 4Before Test Starts 4.1Power Section Installation 4.2Engine Operation (Break-in) 4.3Engine Operation (Test/Samples) 4.4Stripped Viscosity 4.5Test Completion (BWL) 4.6Significance and U
19、se 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 6.3Procurement of Parts 6.4Reagents and Materials 7Reagents 7.1Cleaning Materials 7.2Expendable
20、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 9.1Conditioning Test Run on Power Section 9.2General Power Section Rebuild Instructions 9.3Reco
21、nditioning 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 Wrenches 10.4Engine Operating Procedure 11Run-In and Flush 11.1Test Operating Conditions 11.2Ai
22、r-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 Computation 11.8Operational Validity Criteria 11.9Test Completion 11.10Determination of Test Results 12
23、Oil 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 andJournal TaperAnnex A1Measurement of Main Bearing Clearance Annex A2The ASTM Test Monitoring Cen
24、ter 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 A6Sequence VIII Oil Priming Procedure Annex A7Alternative Crankcase Breather Configuration Annex A8C
25、onnecting Rod Bearing Cleaning Procedure Annex A9Electronic Ignition Conversion Annex A10D6709 152System Response Procedure Annex A11Air-Fuel Ratio Measurement Annex A12Lead Decontamination Procedure Annex A13Stay-in-Grade Oil Analysis Procedure Annex A14Crankshaft Rear Seal Conditioning Annex A15Re
26、port Forms and Data Dictionary Annex A16Test Fuel Specification Annex A17APPENDIXESRole of the ASTM Test Monitoring Center and the Calibration Program Appendix X1Suggested Method for Salvaging Camshaft Bearing Journals Appendix X2Data Log Sheets Appendix X32. Referenced Documents2.1 ASTM Standards:3
27、D86 Test Method for Distillation of Petroleum Products at Atmospheric PressureD130 Test Method for Corrosiveness to Copper from Petroleum Products by Copper Strip TestD235 Specification for Mineral Spirits (Petroleum Spirits) (Hydrocarbon Dry Cleaning Solvent)D240 Test Method for Heat of Combustion
28、of Liquid Hydrocarbon Fuels by Bomb CalorimeterD323 Test Method for Vapor Pressure of Petroleum Products (Reid Method)D381 Test Method for Gum Content in Fuels by Jet EvaporationD445 Test Method for Kinematic Viscosity of Transparent and Opaque Liquids (and Calculation of Dynamic Viscosity)D525 Test
29、 Method for Oxidation Stability of Gasoline (Induction Period Method)D1319 Test Method for Hydrocarbon Types in Liquid Petroleum Products by Fluorescent Indicator AdsorptionD2422 Classification of Industrial Fluid Lubricants by Viscosity SystemD2699 Test Method for Research Octane Number of Spark-Ig
30、nition 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 by Atomic Absorption SpectroscopyD3343 Test Method for Estimation of Hydrogen Content of Aviation FuelsD4052 Test Method for Den
31、sity, Relative Density, and API Gravity of Liquids by Digital Density MeterD4175 Terminology Relating to Petroleum, Petroleum Products, and LubricantsD4294 Test Method for Sulfur in Petroleum and Petroleum Products by Energy Dispersive X-ray Fluorescence SpectrometryD4485 Specification for Performan
32、ce of Active API Service Category Engine OilsD4815 Test Method for Determination of MTBE, ETBE, TAME, DIPE, tertiary-Amyl Alcohol and C1 to C4 Alcohols inGasoline by Gas ChromatographyD7422 Test Method for Evaluation of Diesel Engine Oils in T-12 Exhaust Gas Recirculation Diesel EngineE29 Practice f
33、or Using Significant Digits in Test Data to Determine Conformance with SpecificationsE191 Specification forApparatus For Microdetermination of Carbon and Hydrogen in Organic and Organo-Metallic Compounds2.2 SAE Standards:4J183 Engine Oil Performance and Engine Service Classification (Other Than “Ene
34、rgy-Conserving”)J304 Engine Oil Tests3. Terminology3.1 Definitions:3.1.1 air-fuel ratio, nin internal combustion engines, the mass ratio of air-to-fuel in the mixture being induced into thecombustion chambers. D41753.1.2 automotive, adjdescriptive of equipment associated with self-propelled machiner
35、y, usually vehicles driven by internalcombustion engines. D44853.1.3 blind reference oil, na reference oil, the identity of which is unknown by the test facility.3.1.3.1 DiscussionThis is a coded reference oil that is submitted by a source independent from the test facility. D41753 For referencedAST
36、M standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at serviceastm.org. For Annual Book of ASTM Standardsvolume information, refer to the standards Document Summary page on the ASTM website.4 Available from Society of Automotive Engineers, Inc., 400 Commonwealth Drive,
37、Warrendale, PA 15096. Request SAE Handbook Vol 3. This standard is not availableseparately.D6709 1533.1.4 blowby, nin internal combustion engines, that portion of the combustion products and unburned air/fuel mixture thatleaks past piston rings into the engine crankcase during operation. D41753.1.5
38、critical parts, nthose components used in the test that are known to affect test severity.3.1.6 noncompounded engine oil, na lubricating oil having a viscosity within the range of viscosities of oils normally usedin engines, and that may contain anti-foam agents or pour depressants, or both, but not
39、 other additives. D41753.1.6.1 DiscussionIn this test method noncompounded oil is also known as build-up oil.3.1.7 non-standard test, na test that is not conducted in conformance with the requirements in the standard test method; suchas running on an uncalibrated test stand, using different test equ
40、ipment, applying different equipment assembly procedures, or usingmodified operating conditions. D41753.1.8 test start, nintroduction of test oil into the engine. D41753.1.9 wear, nthe loss of material from a surface, generally occurring between two surfaces in relative motion, and resultingfrom mec
41、hanical or chemical action or a combination of both. D74223.2 Definitions of Terms Specific to This Standard:3.2.1 accessory case, nthe mounting base containing the balancing mechanism, flywheel, and final driveshaft for the powersection of the CLR engine.3.2.2 build-up oil, nsee 3.1.6, noncompounde
42、d engine oil.3.2.3 calibrated power section/test stand combination, none that has completed an operationally valid reference oil test withinthe previous six months, the results of which fall within industry severity and precision limits as published by the TMC.3.2.4 conditioning test run, na full-le
43、ngth Sequence VIII test using a TMC-designated reference oil in a new or newly rebuiltpower section to prepare the cast iron parts before conducting routine standard tests with the power section.3.2.5 emergency shutdown, nthe procedure for turning off the engines ignition without using the prescribe
44、d engine cool-downperiod.3.2.6 full-length test, na test of an engine oil conducted using a power section and a test stand that runs 4.5 h run-in, 2 hflush and 40 h at test conditions. (See 10.1.3.1, exception for 10 h stay in grade test).3.2.7 new power section, nan engine power section consisting
45、of either a new crankcase or complete power section that hasno previous oil test history.3.2.8 off-gas, ngas exiting the power section crankcase breather.3.2.9 off-test time, nany time that the engine is not operating at the prescribed test conditions.3.2.10 oil gallery side cover plate, ncrankcase
46、cover plate that contains the oil gallery and provision for mounting and drivingthe oil pump and ignition assembly.3.2.11 operationally valid test, nan engine oil test that has been conducted in accordance with the conditions listed in this testmethod.3.2.12 power section, nthe combination of the cr
47、ankcase assembly, the cylinder block assembly, and the cylinder headassembly, all of which are attached to the accessory case.3.2.13 reconditioned power section, nan engine power section which has been disassembled, cleaned, and reassembledaccording to the detailed procedures5 after completion of ei
48、ther a conditioning test run or a full-length CLR engine oil test.3.2.14 reference oil test, na standard Sequence VIII engine oil test of a reference oil designated by the TMC, conducted toensure that power section and test stand severity falls within industry limits.5 Refer to Instructions for Asse
49、mbly and Disassembly of the CLR Oil Test Engine, available from Test Engineering, Inc., 12718 Cimarron Path, San Antonio, TX 78249.TABLE 1 Power Section Run-in ScheduleSpeed,r/min(25)Power SparkAdvance, BTDC(1)Time,min (2)TotalTime, hW (150)1500 1500 25 60 12000 3000 25 60 22500 3700 35 60 33150 3700 35 60 4D6709 1543.2.15 run-in and flush, nthe initial 4.5 h operation of a new, rebuilt, or reconditioned power section at the beginning of eithera conditioning test run or a full-length test.3.2.16 scheduled downtime, noff-test time that is
