1、Designation: D6750 17D6750 18Standard 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 designati
2、on indicates 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 wr
3、itten for use by laboratories that make use of ASTM TestMonitoring Center (TMC)2 services (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 laborator
4、ies previouslycalibrated 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 In
5、stitute and 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 laborator
6、y (andhence 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 pro
7、cess.Laboratories 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 oils intended for use in certain diesel engines. They are performed ina standardized high-speed, single-cylinder diesel engine by either the 1
8、K (0.4 % mass fuel sulfur) or 1N (0.04 % mass fuel sulfur)procedure.3 The only difference in the two test methods is the fuel used. Piston and ring groove deposit-forming tendency and oilconsumption are measured.Also, the piston, the rings, and the liner are examined for distress and the rings for m
9、obility. These testmethods are required to evaluate oils intended to satisfy API service categories CF-4 and CH-4 for 1K, and CG-4 for 1N ofSpecification D4485.1.2 These test methods, although based on the original Caterpillar 1K/1N procedures,3 also embody TMC information lettersissued before these
10、 test methods were first published. These test methods are subject to frequent change. Until the next revisionof these test methods, TMC will update changes in these test methods by the issuance of information letters which shall be obtainedfrom TMC (see Annex A1 Annex A4).1.3 The values stated in S
11、I units are to be regarded as standard. No other units of measurement are included in this standard.1.3.1 ExceptionWhere there is no direct SI equivalent such as screw threads, national pipe threads/diameters, tubing size, orsingle source equipment specified. Also Brake Specific Fuel Consumption is
12、measured in kilograms per kilowatthour.1.4 The following is the Table of Contents:1 These test methods are under the jurisdiction of ASTM Committee D02 on Petroleum Products, Liquid Fuels, and Lubricants and is the direct responsibility ofSubcommittee D02.B0.02 on Heavy Duty Engine Oils.Current edit
13、ion approved May 1, 2017April 1, 2018. Published May 2017April 2018. Originally approved in 2002. Last previous edition approved in 20162017 asD6750 16.D6750 17. DOI: 10.1520/D6750-17.10.1520/D6750-18.2 Until the next revision of this test method, the ASTM Test Monitoring Center will update changes
14、in the test method by means of information letters. Information lettersmay be obtained from the ASTM Test Monitoring Center, 6555 Penn Ave., Pittsburgh, PA 15206-4489. Attention: Administrator. This edition incorporates revisions in allinformation Letters through No. 16-2.17-1.3 These 1K/1N test pro
15、cedures were developed by Caterpillar Inc., P.O. Box 610, Mossville, IL 61552-0610.This document is not an ASTM standard 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 ade
16、quately 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 ASTM is to be considered the official document.*A Summary of Changes section appears at the end of this standardCopyright ASTM
17、 International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States1SectionIntroductionScope 1Referenced documents 2Terminology 3Summary of Test Methods 4Significance and Use 5Apparatus 6General Laboratory Requirements 6.1Test Engine 6.2Test Engine Accessories and Par
18、ts 6.3Reagents and 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 10Gen
19、eral Requirements 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 Proce
20、dure 11.2Warm-Up 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 Re
21、quirements/Calibration/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) 13.12Reportin
22、g Calibration Test Results 13.13Precision 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 A4Spe
23、cifications for Test Engine and Engine 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 Regressi
24、on Method Annex A11Test Fuel Specifications 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
25、 Part Number (P/N) and Warranty Annex 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 X4D6750 1821.5 This standard does not pur
26、port 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 safety, health, and healthenvironmental practices and determine theapplicability of regulatory limitations prior to use. Specific precauti
27、onary statements appear throughout the text. Being enginetests, these test methods do have definite hazards that shall be met by safe practices (see Annex A19 on Safety Precautions).1.6 This international standard was developed in accordance with internationally recognized principles on standardizat
28、ionestablished in the Decision on Principles for the Development of International Standards, Guides and Recommendations issuedby the World Trade Organization Technical Barriers to Trade (TBT) Committee.2. Referenced Documents2.1 ASTM Standards:4D86 Test Method for Distillation of Petroleum Products
29、and Liquid Fuels at Atmospheric PressureD93 Test Methods for Flash Point by Pensky-Martens Closed Cup TesterD97 Test Method for Pour Point of Petroleum ProductsD130 Test Method for Corrosiveness to Copper from Petroleum Products by Copper Strip TestD235 Specification for Mineral Spirits (Petroleum S
30、pirits) (Hydrocarbon Dry Cleaning Solvent)D287 Test Method for API Gravity of Crude Petroleum and Petroleum Products (Hydrometer Method)D445 Test Method for Kinematic Viscosity of Transparent and Opaque Liquids (and Calculation of Dynamic Viscosity)D482 Test Method for Ash from Petroleum ProductsD52
31、4 Test Method for Ramsbottom Carbon Residue of Petroleum ProductsD613 Test Method for Cetane Number of Diesel Fuel OilD664 Test Method for Acid Number of Petroleum Products by Potentiometric TitrationD1298 Test Method for Density, Relative Density, or API Gravity of Crude Petroleum and Liquid Petrol
32、eum Products byHydrometer MethodD1319 Test Method for Hydrocarbon Types in Liquid Petroleum Products by Fluorescent Indicator AdsorptionD1796 Test Method for Water and Sediment in Fuel Oils by the Centrifuge Method (Laboratory Procedure)D2425 Test Method for Hydrocarbon Types in Middle Distillates b
33、y Mass SpectrometryD2500 Test Method for Cloud Point of Petroleum Products and Liquid FuelsD2622 Test Method for Sulfur in Petroleum Products by Wavelength Dispersive X-ray Fluorescence SpectrometryD2709 Test Method for Water and Sediment in Middle Distillate Fuels by CentrifugeD3117 Test Method for
34、 Wax Appearance Point of Distillate Fuels (Withdrawn 2010)5D3524 Test Method for Diesel Fuel Diluent in Used Diesel Engine Oils by Gas ChromatographyD4485 Specification for Performance of Active API Service Category Engine OilsD4737 Test Method for Calculated Cetane Index by Four Variable EquationD4
35、739 Test Method for Base Number Determination by Potentiometric Hydrochloric Acid TitrationD5185 Test Method for Multielement Determination of Used and Unused Lubricating Oils and Base Oils by InductivelyCoupled Plasma Atomic Emission Spectrometry (ICP-AES)D5186 Test Method for Determination of theA
36、romatic Content and PolynuclearAromatic Content of Diesel Fuels andAviationTurbine Fuels By Supercritical Fluid ChromatographyD5844 Test Method for Evaluation of Automotive Engine Oils for Inhibition of Rusting (Sequence IID) (Withdrawn 2003)5D5862 Test Method for Evaluation of Engine Oils inTwo-Str
37、oke CycleTurbo-Supercharged 6V92TADiesel Engine (Withdrawn2009)5D6202 Test Method forAutomotive Engine Oils on the Fuel Economy of Passenger Cars and Light-Duty Trucks in the SequenceVIA Spark Ignition Engine (Withdrawn 2009)5D6594 Test Method for Evaluation of Corrosiveness of Diesel Engine Oil at
38、135 CD7422 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 SpecificationsIEEE/ASTM SI 10 Standard for Use of the International System of Units (SI): The Modern Metric
39、System2.2 SAE Standard:SAE J183 Engine Oil Performance and Engine Service Classification62.3 API Standard:API 1509 Engine Service Classification and Guide to Crankcase Oil Selection74 For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at serviceastm.or
40、g. For Annual Book of ASTM Standardsvolume information, refer to the standards Document Summary page on the ASTM website.5 The last approved version of this historical standard is referenced on www.astm.org.6 Available from the Society of Automotive Engineers Inc., 400 Commonwealth Dr., Warrendale,
41、PA 15096. Order SAE Handbook, Vol 3; the standard is not availableseparately.7 Available from the American Petroleum Institute, 1220 L St., NW, Washington, DC 20005.D6750 1832.4 Other ASTM Document:ASTM Deposit Rating Manual 20 (Formerly CRC Manual 20)83. Terminology3.1 Definitions:3.1.1 blind refer
42、ence oil, na reference oil, the indentity of which is unknown by the test facility.3.1.1.1 DiscussionThis is a coded reference oil that is submitted by a source independent from the test facility. D58443.1.2 calibration test, nan engine test conducted on a reference oil under carefully prescribed co
43、nditions, the results of whichare used to determine the suitability of the engine stand/laboratory for such tests on non-reference oils.3.1.2.1 DiscussionA calibration test also includes tests conducted on parts to ensure their suitability for use in reference and non-reference tests.3.1.3 calibrate
44、d test stand, na test stand on which the testing of reference material(s), conducted as specified in the standard,provided acceptable test results.3.1.3.1 DiscussionIn several automotive lubricant standard test methods, the TMC provides testing guidance and determines acceptability. Sub. BGlossary23
45、.1.4 candidate oil, nan oil that is intended to have the performance characteristics necessary to satisfy a specification andis to be tested against that specification. D58443.1.5 debris, nin internal combustion engines, solid contaminant materials unintentionally introduced into the engine orresult
46、ing from wear. D58623.1.6 double-blind test, na standard test performed on a double-blind reference oil.3.1.7 double-blind reference oil, na reference oil, the identity of which is unknown by either the submitting source or the testfacility and is not known to be a reference oil by the test facility
47、.3.1.7.1 DiscussionThis is a coded reference oil that is supplied by an independent source to a second party, who applies their own coded designationto the oil (and if necessary, repackages it to preserve its anonymity), and submits it to a third party for testing. Sub. B Glossary3.1.8 engine oil, n
48、a liquid that reduces friction or wear, or both, between the moving parts within an engine; removes heat,particularly from the underside of pistons; and serves as a combustion gas sealant for piston rings.3.1.8.1 DiscussionIt may contain additives to enhance certain properties. Inhibition of engine
49、rusting, deposit formation, valve train wear, oiloxidation, and foaming are examples.3.1.9 erosion, nwearing away gradually, especially by rubbing or corroding.3.1.10 heavy duty engine, nin internal combustion engine types, one that is designed to allow operation continuously at orclose to its peak output.3.1.11 lubricating oil, na liquid lubricant, usually comprising several ingredients, including a major portion of base oil andminor portions of various additives. Sub. B Glossary3.1.12 non-reference oil, nany oil other than a reference oil; such as a r
