1、Designation:D746822Standard Test Method forCummins ISM Test1This standard is issued under the fixed designation D7468;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of last revision.A number in parentheses indicates the yea
2、r of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope*1.1 The test method covers a heavy-duty diesel engine testprocedure conducted under high soot conditions to evaluate oilperformance with regard to valve train wear,top ring wear,slu
3、dge deposits,and oil filter plugging in an EGR environment.This test method is commonly referred to as the Cummins ISMTest.21.2 The values stated in SI units are to be regarded asstandard.No other units of measurement are included in thisstandard.1.2.1 ExceptionThe only exception is where there is n
4、odirect SI equivalent such as screw threads,national pipethreads/diameters,tubing sizes,or where there is a sole sourceof supply equipment specification.1.3 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
5、standard to establish appro-priate safety,health,and environmental practices and deter-mine the applicability of regulatory limitations prior to use.See Annex A1 for general safety precautions.1.4 Table of Contents:SectionScope1Referenced Documents2Terminology3Summary of Test Method4Significance and
6、 Use5Apparatus6Test Engine Configuration6.1Test Engine6.1.1Oil Heat Exchanger,Adapter Blocks,Block Off Plate6.1.2Oil Filter Head Modification6.1.3Oil Pan Modification6.1.4Engine Control Module(ECM)6.1.5Engine Position Sensor6.1.6SectionIntake Manifold Temperature Sensor6.1.7Barometric Pressure Senso
7、r6.1.8Turbocharger Controller6.1.9Power Supply Voltage6.1.10Air Compressor and Fuel Pump6.1.11Engine Block Preparation6.1.12Test Stand Configuration6.2Engine Mounting6.2.1Intake Air System6.2.2Aftercooler6.2.3Exhaust System6.2.4Exhaust Gas Recirculation System6.2.5Fuel System6.2.6Coolant System6.2.7
8、Pressurized Oil Fill System6.2.8External Oil System6.2.9Crankcase Aspiration6.2.10Blowby Rate6.2.11System Time Responses6.3Oil Sample Containers6.4Mass Balance6.5Engine and Cleaning Fluids7Test Oil7.1Test Fuel7.2Engine Coolant7.3Pentane7.4Solvent7.5Preparation of Apparatus8Cleaning of Parts8.1Genera
9、l8.1.1Engine Block8.1.2Cylinder Head8.1.3Rocker Cover and Oil Pan8.1.4External Oil System8.1.5Crosshead Cleaning and Measurement8.1.6Rod Bearing Cleaning and Measurement8.1.7Ring Cleaning and Measurement8.1.8Injector Adjusting Screw Cleaning and Measurement8.1.9Engine Assembly8.2General8.2.1Parts Re
10、use and Replacement8.2.2Build-Up Oil8.2.3Coolant Thermostat8.2.4Oil Thermostat8.2.5Fuel Injectors8.2.6New Parts8.2.7Operational Measurements8.3Units and Formats8.3.1Instrumentation Calibration8.3.2Temperatures8.3.3Pressures8.3.4Flow Rates8.3.5Intake and Exhaust CO2Measurement8.3.6Engine/Stand Calibr
11、ation and Non-Reference Oil Tests9General9.1New Test Stand9.2New Test Stand Calibration9.2.11This test method is under the jurisdiction of ASTM Committee D02 onPetroleum Products,Liquid Fuels,and Lubricants and is the direct responsibility ofSubcommittee D02.B0 on Automotive Lubricants.Current editi
12、on approved July 1,2022.Published July 2022.Originally approvedin 2008.Last previous edition approved in 2021 as D7468 21.DOI:10.1520/D7468-22.2Until the next revision of this test method,the ASTM Test Monitoring Centerwill update changes in this test method by means of Information Letters.Informa-t
13、ion letters may be obtained from theASTM Test Monitoring Center,203ArmstrongDrive,Freeport,PA 16229,Attention:Director.This edition incorporates revisionsin all information letters through No.22-1.*A Summary of Changes section appears at the end of this standardCopyright ASTM International,100 Barr
14、Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United StatesThis international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for theDevelopment of International Standards,Guides and Recommendatio
15、ns issued by the World Trade Organization Technical Barriers to Trade(TBT)Committee.1SectionStand Calibration Period9.3Stand Modification and Calibration Status9.4Test Numbering System9.5General9.5.1Reference Oil Tests9.5.2Non-Reference Oil Tests9.5.3Reference Oil Test Acceptance9.6Reference Oil Acc
16、ountability9.7Last Start Date9.8Donated Reference Oil Test Programs9.9Adjustments to Reference Oil Calibration Periods9.10Procedural Deviations9.10.1Parts and Fuel Shortages9.10.2Reference Oil Test Data Flow9.10.3Special Use of the Reference Oil Calibration System9.10.4Test Procedure10Engine Installation and Stand Connections10.1Coolant System Fill10.2Oil Fill for Break-in10.3Engine Build Committed10.3.3Fuel Samples10.4Engine Warm-up10.5Shutdown During Warm-up10.5.1Engine Break-in10.6Shutdown an
