1、Designation: D6750 16Standard Test Methods forEvaluation of Engine Oils in a High-Speed, Single-CylinderDiesel Engine1K Procedure (0.4 % Fuel Sulfur) and 1NProcedure (0.04 % Fuel Sulfur)1This standard is issued under the fixed designation D6750; the number immediately following the designation indic
2、ates 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 fo
3、r use by laboratories that make use of ASTM TestMonitoring Center (TMC)2services (see Annex A1 Annex A4).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 previ
4、ouslycalibrated 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 a
5、nd 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 (andhen
6、ce 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.Labo
7、ratories that choose not to use the TMC services may simply disregard these portions.1. Scope*1.1 These test methods cover the performance of engine oilsintended for use in certain diesel engines. They are performedin a standardized high-speed, single-cylinder diesel engine byeither the 1K (0.4 % ma
8、ss fuel sulfur) or 1N (0.04 % mass fuelsulfur) procedure.3The only difference in the two test methodsis the fuel used. Piston and ring groove deposit-formingtendency and oil consumption are measured. Also, the piston,the rings, and the liner are examined for distress and the ringsfor mobility. These
9、 test methods are required to evaluate oilsintended to satisfy API service categories CF-4 and CH-4 for1K, and CG-4 for 1N of Specification D4485.1.2 These test methods, although based on the originalCaterpillar 1K/1N procedures,3also embody TMC informationletters issued before these test methods we
10、re first published.These test methods are subject to frequent change. Until thenext revision of these test methods, TMC will update changesin these test methods by the issuance of information letterswhich shall be obtained from TMC (see Annex A1 AnnexA4).1.3 The values stated in SI units are to be r
11、egarded asstandard. No other units of measurement are included in thisstandard.1.3.1 ExceptionWhere there is no direct SI equivalentsuch as screw threads, national pipe threads/diameters, tubingsize, or single source equipment specified. Also Brake SpecificFuel Consumption is measured in kilograms p
12、er kilowatthour.1These test methods are under the jurisdiction of ASTM Committee D02 onPetroleum Products, Liquid Fuels, and Lubricants and is the direct responsibility ofSubcommittee D02.B0.02 on Heavy Duty Engine Oils.Current edition approved Oct. 1, 2016. Published October 2016. Originallyapprove
13、d in 2002. Last previous edition approved in 2015 as D6750 15a. DOI:10.1520/D6750-16.2Until the next revision of this test method, the ASTM Test Monitoring Centerwill update changes in the test method by means of information letters. Informationletters may be obtained from the ASTM Test Monitoring C
14、enter, 6555 Penn Ave.,Pittsburgh, PA 15206-4489. Attention: Administrator. This edition incorporatesrevisions in all information Letters through No. 153.3These 1K/1N test procedures were developed by Caterpillar Inc., P.O. Box 610,Mossville, IL 61552-0610.*A Summary of Changes section appears at the
15、 end of this standardCopyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States11.4 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 est
16、ablish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use. Specific precau-tionary statements appear throughout the text. Being enginetests, these test methods do have definite hazards that shall bemet by safe practices (see Annex A19 on
17、Safety Precautions).1.5 The following is the Table of Contents:SectionIntroductionScope 1Referenced documents 2Terminology 3Summary of Test Methods 4Significance and Use 5Apparatus 6General Laboratory Requirements 6.1Test Engine 6.2Test Engine Accessories and Parts 6.3Reagents and Materials 7Test Oi
18、l Sample Requirements 8Preparation of Apparatus 9Engine Inspection 9.1Engine Pre-Test Lubrication System Flush 9.2Engine Pre-Test Measurements and Inspections 9.3Engine Assembly 9.4Pressure Testing of Fuel System Assembly 9.5Calibration of Engine Test Stand 10General Requirements and Frequency of Ca
19、libration 10.1Runs 10.2Specified Test Parameters 10.3Calibration Test Acceptance Criteria 10.4Action on Rejection of Calibration Test 10.5Test Numbering 10.6Reference Oils 10.7Severity Adjustments 10.8Engine Operating Procedure 11Engine Run-In 11.1Cool-Down Procedure 11.2Warm-Up Procedure 11.3Operat
20、ing Conditions and Oil Additions 11.4Measurement of Oil Consumption 11.5Sampling Used Oil 11.6Shutdowns, Lost Time and Off Tolerance Conditions 11.7Recording of Exhaust Temperature 11.8Air-Fuel Ratio Measurement 11.9Recording of Engine Conditions 11.10Humidity Requirements/Calibration/Measurement 11
21、.11Inspections, Photographs and Measurements 12Reference to Reporting Form 12.1Pre-Test Measurements of Engine Parts 12.2Post-Test Information 12.3Oil Inspections 12.4Report 13General Directions 13.1Electronic Transmission of Test Results (Optional) 13.12Reporting Calibration Test Results 13.13Preci
22、sion and Bias 14Keywords 15ANNEXESASTM Test Monitoring Center Organization Annex A1ASTM Test Monitoring Center: Calibration Procedures Annex A2ASTM Test Monitoring Center: Maintenance Activities Annex A3ASTM Test Monitoring Center: Related Information Annex A4Specifications for Test Engine and Engin
23、e Build Annex A5Intake Air System Details Annex A6Exhaust System Details Annex A7Cooling System Details Annex A8Oil System Modifications and Instrument Locations Annex A9Other Pressure and Temperature Measurement Locations Annex A10Oil Consumption Linear Regression Method Annex A11Test Fuel Specific
24、ations Annex A12Lubrication System, Flush Apparatus and Procedure Annex A13Engine Operating Conditions Annex A14Procedure for Rating Piston and Liner Annex A15Calculation of Percent Offset and Percent Deviation Annex A161K/1N Test Reporting Annex A17Parts List by Part Number (P/N) and Warranty Annex
25、 A18Safety Precautions Annex A19APPENDIXESHumidity Data Appendix X1Statistical Equations for Mean and Standard Deviation Appendix X2Examples of Forms for Reporting Appendix X3Optional Recording of Oil Pass Limits Appendix X42. Referenced Documents2.1 ASTM Standards:4D86 Test Method for Distillation
26、of Petroleum Products andLiquid Fuels at Atmospheric PressureD93 Test Methods for Flash Point by Pensky-MartensClosed Cup TesterD97 Test Method for Pour Point of Petroleum ProductsD130 Test Method for Corrosiveness to Copper from Petro-leum Products by Copper Strip TestD235 Specification for Mineral
27、 Spirits (Petroleum Spirits)(Hydrocarbon Dry Cleaning Solvent)D287 Test Method for API Gravity of Crude Petroleum andPetroleum Products (Hydrometer Method)D445 Test Method for Kinematic Viscosity of Transparentand Opaque Liquids (and Calculation of Dynamic Viscos-ity)D482 Test Method for Ash from Pe
28、troleum ProductsD524 Test Method for Ramsbottom Carbon Residue ofPetroleum ProductsD613 Test Method for Cetane Number of Diesel Fuel OilD664 Test Method for Acid Number of Petroleum Productsby Potentiometric TitrationD1298 Test Method for Density, Relative Density, or APIGravity of Crude Petroleum a
29、nd Liquid Petroleum Prod-ucts by Hydrometer MethodD1319 Test Method for Hydrocarbon Types in Liquid Petro-leum Products by Fluorescent Indicator AdsorptionD1796 Test Method for Water and Sediment in Fuel Oils bythe Centrifuge Method (Laboratory Procedure)D2425 Test Method for Hydrocarbon Types in Mi
30、ddle Dis-tillates by Mass SpectrometryD2500 Test Method for Cloud Point of Petroleum Productsand Liquid FuelsD2622 Test Method for Sulfur in Petroleum Products byWavelength Dispersive X-ray Fluorescence SpectrometryD2709 Test Method for Water and Sediment in MiddleDistillate Fuels by CentrifugeD3117
31、 Test Method for Wax Appearance Point of DistillateFuels (Withdrawn 2010)5D3524 Test Method for Diesel Fuel Diluent in Used DieselEngine Oils by Gas ChromatographyD4485 Specification for Performance of Active API Service4For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact
32、ASTM Customer Service at serviceastm.org. For Annual Book of ASTMStandards volume information, refer to the standards Document Summary page onthe ASTM website.5The last approved version of this historical standard is referenced onwww.astm.org.D6750 162Category Engine OilsD4737 Test Method for Calcul
33、ated Cetane Index by FourVariable EquationD4739 Test Method for Base Number Determination byPotentiometric Hydrochloric Acid TitrationD5185 Test Method for Multielement Determination ofUsed and Unused Lubricating Oils and Base Oils byInductively Coupled Plasma Atomic Emission Spectrom-etry (ICP-AES)
34、D5186 Test Method for Determination of the AromaticContent and Polynuclear Aromatic Content of DieselFuels and Aviation Turbine Fuels By Supercritical FluidChromatographyD5844 Test Method for Evaluation of Automotive EngineOils for Inhibition of Rusting (Sequence IID) (Withdrawn2003)5D5862 Test Meth
35、od for Evaluation of Engine Oils in Two-Stroke Cycle Turbo-Supercharged 6V92TA Diesel Engine(Withdrawn 2009)5D6202 Test Method for Automotive Engine Oils on the FuelEconomy of Passenger Cars and Light-Duty Trucks in theSequence VIA Spark Ignition Engine (Withdrawn 2009)5D6594 Test Method for Evaluat
36、ion of Corrosiveness ofDiesel Engine Oil at 135 CD7422 Test Method for Evaluation of Diesel Engine Oils inT-12 Exhaust Gas Recirculation Diesel EngineE29 Practice for Using Significant Digits in Test Data toDetermine Conformance with SpecificationsIEEE/ASTM SI 10 Standard for Use of the Internationa
37、lSystem of Units (SI): The Modern Metric System2.2 SAE Standard:SAE J183 Engine Oil Performance and Engine ServiceClassification62.3 API Standard:API 1509 Engine Service Classification and Guide to Crank-case Oil Selection72.4 Other ASTM Document:ASTM Deposit Rating Manual 20 (Formerly CRC Manual20)
38、83. Terminology3.1 Definitions:3.1.1 blind reference oil, na reference oil, the indentity ofwhich is unknown by the test facility.3.1.1.1 DiscussionThis is a coded reference oil that issubmitted by a source independent from the test facility. D58443.1.2 calibration test, nan engine test conducted on
39、 areference oil under carefully prescribed conditions, the resultsof which are used to determine the suitability of the enginestand/laboratory for such tests on non-reference oils.3.1.2.1 DiscussionA calibration test also includes testsconducted on parts to ensure their suitability for use inreferen
40、ce and non-reference tests.3.1.3 calibrated test stand, na test stand on which thetesting of reference material(s), conducted as specified in thestandard, provided acceptable test results.3.1.3.1 DiscussionIn several automotive lubricant stan-dard test methods, the TMC provides testing guidance andd
41、etermines acceptability. Sub. B Glossary23.1.4 candidate oil, nan oil that is intended to have theperformance characteristics necessary to satisfy a specificationand is to be tested against that specification. D58443.1.5 debris, nin internal combustion engines, solid con-taminant materials unintenti
42、onally introduced into the engineor resulting from wear. D58623.1.6 double-blind test, na standard test performed on adouble-blind reference oil.3.1.7 double-blind reference oil, na reference oil, theidentity of which is unknown by either the submitting source orthe test facility and is not known to
43、 be a reference oil by the testfacility.3.1.7.1 DiscussionThis is a coded reference oil that issupplied by an independent source to a second party, whoapplies their own coded designation to the oil (and if necessary,repackages it to preserve its anonymity), and submits it to athird party for testing
44、. Sub. B Glossary3.1.8 engine oil, na liquid that reduces friction or wear, orboth, between the moving parts within an engine; removesheat, particularly from the underside of pistons; and serves asa combustion gas sealant for piston rings.3.1.8.1 DiscussionIt may contain additives to enhancecertain
45、properties. Inhibition of engine rusting, depositformation, valve train wear, oil oxidation, and foaming areexamples.3.1.9 erosion, nwearing away gradually, especially byrubbing or corroding.3.1.10 heavy duty engine, nin internal combustion enginetypes, one that is designed to allow operation contin
46、uously at orclose to its peak output.3.1.11 lubricating oil, na liquid lubricant, usually com-prising several ingredients, including a major portion of baseoil and minor portions of various additives. Sub. B Glossary3.1.12 non-reference oil, nany oil other than a referenceoil; such as a research for
47、mulation, commercial oil, or candi-date oil. D58443.1.13 purchaser, nof an ASTM test, a person or organi-zation that pays for the conduct of an ASTM test method on aspecified product.3.1.13.1 DiscussionThe preferred term is purchaser. Dep-recated terms that have been used are client, requestor,spons
48、or, and customer. D62023.1.14 reference oil, nan oil of known performancecharacteristics, used as a basis for comparison.3.1.14.1 DiscussionReference oils are used to calibratetesting facilities, to compare the performance of other oils, or6Available from the Society of Automotive Engineers Inc., 40
49、0 CommonwealthDr., Warrendale, PA 15096. Order SAE Handbook, Vol 3; the standard is notavailable separately.7Available from theAmerican Petroleum Institute, 1220 L St., NW, Washington,DC 20005.8For Stock #TMCMNL20, visit the ASTM website, www.astm.org, or contactASTM International Customer Service at serviceastm.org.D6750 163to evaluate other materials (such as seals) that interact withoils. D58443.1.15 soot, nin internal combustion engines, submicronsize particles, primarily carbon, created in the combustionchamber as products of incomplete combusti
