1、Designation: D6750 15aStandard 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 indi
2、cates 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.INTRODUCTIONThe test methods described in this standar
3、d can be used by any properly equipped laboratorywithout outside assistance. However, the ASTM Test Monitoring Center (TMC)2provides referenceoils and an assessment of the test results obtained on those oils by the laboratory (see Annex A15).By this means, the laboratory will know whether its use of
4、 the test methods gives results statisticallysimilar to those obtained by other laboratories. Furthermore, various agencies require that a laboratoryuses the TMC services in seeking qualification of oils against specifications. For example, the U.S.Army has such a requirement in some of its engine o
5、il specifications.Accordingly, these test methods are written for those laboratories that use the TMC services.Laboratories that choose not to use these services may ignore those portions of the test methods thatrefer to the TMC.These test methods may be modified by Information Letters issued period
6、ically by the TMC afterthe publication of this edition of the standard to become part of it. These letters are obtainable fromthe TMC. In addition, the TMC may issue supplementary memoranda related to the test methods, alsoobtainable from the TMC.1. Scope*1.1 These test methods cover the performance
7、 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 % mass fuel sulfur) or 1N (0.04 % mass fuelsulfur) procedure.3The only difference in the two test methodsis the fuel used. Piston and ring gro
8、ove deposit-formingtendency and oil consumption are measured. Also, the piston,the rings, and the liner are examined for distress and the ringsfor mobility. These test methods are required to evaluate oilsintended to satisfy API service categories CF-4 and CH-4 for1K, and CG-4 for 1N of Specificatio
9、n D4485.1.2 These test methods, although based on the originalCaterpillar 1K/1N procedures,3also embody TMC informationletters issued before these test methods were first published.These test methods are subject to frequent change. Until thenext revision of these test methods, TMC will update change
10、sin these test methods by the issuance of information letterswhich shall be obtained from TMC (see Annex A15).1.3 The values stated in SI units are to be regarded asstandard. No other units of measurement are included in thisstandard.1.3.1 ExceptionWhere there is no direct SI equivalentsuch as screw
11、 threads, national pipe threads/diameters, tubingsize, or single source equipment specified. Also Brake SpecificFuel Consumption is measured in kilograms per kilowatthour.1.4 This standard does not purport to address all of thesafety concerns, if any, associated with its use. It is theresponsibility
12、 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 statements appear throughout the text. Being enginetests, these test methods do have definite hazards that shall bemet
13、by safe practices (see Annex A16 on Safety Precautions).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, 2015. P
14、ublished October 2015. Originallyapproved in 2002. Last previous edition approved in 2015 as D6750 15. DOI:10.1520/D6750-15A.2ASTM Test Monitoring Center (TMC), 6555 Penn Ave., Pittsburgh, PA15206-4489. The TMC issues Information Letters that supplement this test method.This edition incorporates rev
15、isions contained in all information letters through No.152.3These 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 end of this standardCopyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Co
16、nshohocken, PA 19428-2959. United States11.5 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 a
17、nd Materials 7Test Oil 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 Requirement
18、s and Frequency of Calibration 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
19、 Procedure 11.3Operating 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/Calib
20、ration/Measurement 11.11Inspections, 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 Te
21、st Results 13.13Precision and Bias 14Keywords 15ANNEXESSpecifications for Test Engine and Engine Build Annex A1Intake Air System Details Annex A2Exhaust System Details Annex A3Cooling System Details Annex A4Oil System Modifications and Instrument Locations Annex A5Other Pressure and Temperature Meas
22、urement Locations Annex A6Oil Consumption Linear Regression Method Annex A7Test Fuel Specifications Annex A8Lubrication System, Flush Apparatus and Procedure Annex A9Engine Operating Conditions Annex A10Procedure for Rating Piston and Liner Annex A11Calculation of Percent Offset and Percent Deviatio
23、n Annex A121K/1N Test Reporting Annex A13Parts List by Part Number (P/N) and Warranty Annex A14Role of Test Monitoring Center Annex A15Safety Precautions Annex A16APPENDIXESHumidity Data Appendix X1Statistical Equations for Mean and Standard Deviation Appendix X2Examples of Forms for Reporting Appen
24、dix X3Optional Recording of Oil Pass Limits Appendix X42. Referenced Documents2.1 ASTM Standards:4D86 Test Method for Distillation of Petroleum Products atAtmospheric PressureD93 Test Methods for Flash Point by Pensky-MartensClosed Cup TesterD97 Test Method for Pour Point of Petroleum ProductsD130 T
25、est Method for Corrosiveness to Copper from Petro-leum Products by Copper Strip TestD235 Specification for Mineral 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
26、Viscosity of Transparentand Opaque Liquids (and Calculation of Dynamic Viscos-ity)D482 Test Method for Ash from Petroleum 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 Prod
27、uctsby Potentiometric TitrationD1298 Test Method for Density, Relative Density, or APIGravity of Crude Petroleum and 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
28、 Sediment in Fuel Oils bythe Centrifuge Method (Laboratory Procedure)D2425 Test Method for Hydrocarbon Types in Middle Dis-tillates by Mass SpectrometryD2500 Test Method for Cloud Point of Petroleum ProductsD2622 Test Method for Sulfur in Petroleum Products byWavelength Dispersive X-ray Fluorescence
29、 SpectrometryD2709 Test Method for Water and Sediment in MiddleDistillate Fuels by CentrifugeD3117 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
30、Active API ServiceCategory Engine OilsD4737 Test Method for Calculated Cetane Index by FourVariable EquationD4739 Test Method for Base Number Determination byPotentiometric Hydrochloric Acid Titration4For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Servic
31、e 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 15a2D5185 Test Method for Multielement Determination ofUsed and Unused
32、Lubricating Oils and Base Oils byInductively Coupled Plasma Atomic Emission Spectrom-etry (ICP-AES)D5186 Test Method for Determination of the AromaticContent and Polynuclear Aromatic Content of DieselFuels and Aviation Turbine Fuels By Supercritical FluidChromatographyD5844 Test Method for Evaluatio
33、n of Automotive EngineOils for Inhibition of Rusting (Sequence IID) (Withdrawn2003)5D5862 Test Method 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-
34、Duty Trucks in theSequence VIA Spark Ignition Engine (Withdrawn 2009)5D6594 Test Method for Evaluation 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 D
35、ata toDetermine Conformance with SpecificationsIEEE/ASTM SI 10 Standard for Use of the InternationalSystem 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 Cra
36、nk-case Oil Selection72.4 Other ASTM Document:ASTM Deposit Rating Manual 20 (Formerly CRC Manual20)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 s
37、ource independent from the test facility. D58443.1.2 calibration test, nan engine test conducted on 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 c
38、alibration test also includes testsconducted on parts to ensure their suitability for use inreference 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 Discu
39、ssionIn several automotive lubricant stan-dard test methods, the TMC provides testing guidance anddetermines 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 specif
40、ication. D58443.1.5 debris, nin internal combustion engines, solid con-taminant materials unintentionally 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, thei
41、dentity of which is unknown by either the submitting source orthe test facility and is not known to 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 (an
42、d if necessary,repackages it to preserve its anonymity), and submits it to athird party for testing. 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 co
43、mbustion gas sealant for piston rings.3.1.8.1 DiscussionIt may contain additives to enhancecertain 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 hea
44、vy duty engine, nin internal combustion enginetypes, one that is designed to allow operation continuously 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.
45、Sub. B Glossary3.1.12 non-reference oil, nany oil other than a referenceoil; such as a research formulation, 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 Discussio
46、nThe preferred term is purchaser. Dep-recated terms that have been used are client, requestor,sponsor, 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 co
47、mpare the performance of other oils, orto 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 combustion. D58626Available from the Soc
48、iety of Automotive Engineers Inc., 400 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 contact
49、ASTM International Customer Service at serviceastm.org.D6750 15a33.1.16 sponsor, nof an ASTM test method, an organizationthat is responsible for ensuring supply of the apparatus used inthe test procedure portion of the test method.3.1.16.1 DiscussionIn some instances, such as a testmethod for chemical analysis, anASTM working group can bethe sponsor of a test method. In other instances, a companywith a self-interest may or may not be the developer of the testprocedure used within the test method, but is the sponsor,ofthe test method D65943.1.17 standar
