1、Designation: D6709 13D6709 14Standard 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
2、 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 out
3、side 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 th
4、eir 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 su
5、ch 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 TM
6、C.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, and
7、 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. A
8、n 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 performa
9、nce 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 obtai
10、ned 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 measurement
11、 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.1.4 This standard does not purport to address all of the safety concerns, if any, associated with
12、 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 precautionary statements are provided throughout this test method.1.5 This test method is arranged as fo
13、llows:1 This test method is under the jurisdiction of ASTM Committee D02 on Petroleum Products Products, Liquid Fuels, and Lubricants and is the direct responsibility ofSubcommittee D02.B0.01 on Passenger Car Engine Oils.Current edition approved May 1, 2013May 1, 2014. Published May 2013May 2014. Or
14、iginally approved in 2001. Last previous edition approved in 20112013 asD6709 11.D6709 13. DOI: 10.1520/D6709-13.10.1520/D6709-14.2 Until the next revision of this test method, theASTM Test Monitoring Center will update changes in this test method by means of Information Letters. Information Letters
15、may 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. 10-1.131.This document is not an ASTM standard and is intended only to provide the user of an ASTM st
16、andard 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 only the current versionof the standard as published by A
17、STM 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 States1Subject SectionIntroductionScope 1Referenced Documents 2Terminology 3Summar
18、y 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 Use 5Evaluation of Automotive oils 5.1Stay in Grade Capabilities 5.2Correlation of Results 5.3Use 5.
19、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 Power Section-Related Items 7.3Power Section Coolant 7.4Reference Oils 7.5Test Fuel 7.6Test Oil Sam
20、ple 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 9.3Reconditioning of Power Section After Each Test 9.4Calibration 10Power Section and Test Stand Calibrati
21、on 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 11.2Air-Fuel Ratio and Spark Advance 11.3Air, Off-Gas and Blowby Measurement 11.4Unscheduled Shutdowns 11
22、.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 12Oil Analysis 12.1Test Bearing Weight Loss Determination 12.2Report 13Precision and Bias 14Precision
23、 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 Center Calibration Program Annex A3Measurement of Piston-to-Sleeve Clearance Annex A4Control Chart Tec
24、hnique for a Laboratorys SeverityAdjustment (SA)Annex A5Recommended New Liner Honing Procedure Annex A6Sequence VIII Oil Priming Procedure Annex A7Alternative Crankcase Breather Configuration Annex A8Connecting Rod Bearing Cleaning Procedure Annex A9Electronic Ignition Conversion Annex A10System Res
25、ponse Procedure Annex A11Air-Fuel Ratio Measurement Annex A12D6709 142Lead Decontamination Procedure Annex A13Stay-in-Grade Oil Analysis Procedure Annex A14Crankshaft Rear Seal Conditioning Annex A15Report Forms and Data Dictionary Annex A16Test Fuel Specification Annex A17APPENDIXESRole of the ASTM
26、 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:3D86 Test Method for Distillation of Petroleum Products at Atmospheric PressureD130 Test Method for
27、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 of Liquid Hydrocarbon Fuels by Bomb CalorimeterD323 Test Method for Vapor Pressure of Petroleum Pro
28、ducts (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 Method for Oxidation Stability of Gasoline (Induction Period Method)D1319 Test Method for Hydrocar
29、bon 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-Ignition Engine FuelD2700 Test Method for Motor Octane Number of Spark-Ignition Engine FuelD3231 Test
30、 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 Density, Relative Density, and API Gravity of Liquids by Digital Density MeterD4175 Terminology Relati
31、ng to Petroleum, Petroleum Products, and LubricantsD4294 Test Method for Sulfur in Petroleum and Petroleum Products by Energy Dispersive X-ray Fluorescence SpectrometryD4485 Specification for Performance of Active API Service Category Engine OilsD4815 Test Method for Determination of MTBE, ETBE, TAM
32、E, 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 for Using Significant Digits in Test Data to Determine Conformance with SpecificationsE191 Specifica
33、tion 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 “Energy-Conserving”)J304 Engine Oil Tests3. Terminology3.1 Definitions:3.1.1 air-fuel ratio, nin intern
34、al 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 machinery, usually vehicles driven by internalcombustion engines. D44853.1.3 blind reference oil, na refere
35、nce 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. D41753.1.4 blowby, nin internal combustion engines, that portion of the combustion products and unburned air/fuel mixture t
36、hatleaks past piston rings into the engine crankcase during operation. D41753.1.5 critical parts, nthose components used in the test that are known to affect test severity.3 For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at serviceastm.org. For Ann
37、ual 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, Warrendale, PA 15096. Request SAE Handbook Vol 3. This standard is not availableseparately.D6709 1433.1.6 non
38、compounded 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 other additives. D41753.1.6.1 DiscussionIn this test method noncompounded oil is also known as bui
39、ld-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 equipment, applying different equipment assembly procedures, or usingmodified operating conditions. D4
40、1753.1.8 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 mechanical or chemical action or a combination of both. D74223.2 Definitions of Terms Specific to This
41、 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, noncompounded engine oil.3.2.3 calibrated power section/test stand combination, none that has completed an oper
42、ationally 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-length Sequence VIII test using a TMC-designated reference oil in a new or newly rebuiltpower section
43、 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 prescribed engine cool-downperiod.3.2.6 full-length test, na test of an engine oil conducted using a power s
44、ection 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 of either a new crankcase or complete power section that hasno previous oil test history.3.2.8 off-
45、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 cover plate that contains the oil gallery and provision for mounting and drivingthe oil pump and ig
46、nition 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 crankcase assembly, the cylinder block assembly, and the cylinder headassembly, all of which are atta
47、ched 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 either a conditioning test run or a full-length CLR engine oil test.3.2.14 reference oil test, na sta
48、ndard 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.3.2.15 run-in and flush, nthe initial 4.5 h operation of a new, rebuilt, or reconditioned power section at the beginning of eithera
49、 conditioning test run or a full-length test.3.2.16 scheduled downtime, noff-test time that is specifically allowed to include warm-up and cool-down periods as well asshutdown and intermediate bearing weight loss measurements.5 Refer to Instructions for Assembly 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 6
