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1、Designation:D6838?04(Reapproved2010)StardTestMethodfCumminsM11HighSootTest1ThisstardisissuedunderthefixeddesignationD6838thenumberimmediatelyfollowingthedesignationindicatestheyearofiginaladoptioninthecaseofrevisiontheye

2、aroflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperepsilon()indicatesaneditialchangesincethelastrevisionreapproval.1.Scope1.1ThistestmethodiscommonlyreferredtoastheCumminsM11HighSootTest(HST).The

3、testmethoddefinesaheavydutydieselenginetestprocedureconductedunderhighsootconditionstoevaluateoilperfmancewithregardtovalvetrainwearsludgedepositsoilfilterplugging.21.2ThevaluesstatedinSIunitsaretoberegardedasthestard.Th

4、evaluesgiveninparenthesesarefinfmationonly.1.3Thisstarddoesnotpurpttoaddressallofthesafetyconcernsifanyassociatedwithitsuse.Itistheresponsibilityoftheuserofthisstardtoestablishappropriatesafetyhealthpracticesdeterminethe

5、applicabilityofregulatylimitationspritouse.SeeAnnexA1fgeneralsafetyprecautions.1.4TableofContents:SubjectSectionScope1ReferencedDocuments2Terminology3SummaryofTestMethod4SignificanceUse5Apparatus6TestEngineConfiguration6

6、.1TestEngine6.1.1OilHeatExchangerAdapterBlocksBlockOffPlate6.1.2OilPanModification6.1.3EngineControlModule6.1.4AirCompressFuelPump6.1.5TestStConfiguration6.2EngineMounting6.2.1IntakeAirSystem6.2.2Aftercooler6.2.3ExhaustS

7、ystem6.2.4FuelSupply6.2.5CoolantSystem6.2.6SubjectSectionPressurizedOilFillSystem6.2.7ExternalOilSystem6.2.8CrankcaseAspiration6.2.9BlowbyRate6.2.10SystemTimeResponses6.3OilSampleContainers6.4MassBalance6.5EngineCleaning

8、Fluids7TestOil7.1TestFuel7.2EngineCoolant7.3Solvent7.4PreparationofApparatus8CleaningofParts8.1CrossheadCleaningMeasurement8.1.6RodBearingCleaningMeasurement8.1.7EngineAssembly8.2General8.2.1PartsReuseReplacement8.2.2Bui

9、ldUpOil8.2.3CoolantThermostat8.2.4OilThermostat8.2.5FuelInjects8.2.6NewParts8.2.7OperationalMeasurements8.3UnitsFmats8.3.1InstrumentationCalibration8.3.2Temperatures8.3.3Pressures8.3.4FlowRate8.3.5EngineStCalibrationNonR

10、eferenceOilTests9General9.1CalibrationConfiguration9.2NewTestSt9.3EngineStCalibrationPeriod9.4ChangeofCalibrationConfiguration9.5StModificationCalibrationStatus9.6TestNumberingSystem9.7ReferenceOilTestAcceptance9.8Unacce

11、ptableReferenceOilTest9.9ReferenceOilAccountability9.10NonReferenceOilTests9.11TestProcedure10EngineInstallationStConnections10.1CoolantSystemFill10.2OilFillfBreakin10.3FuelSamples10.4EngineWarmup10.5EngineBreakin10.6Shu

12、tdownMaintenance10.7200hTestProcedure10.8OilFillfTest10.8.2ZerohOilSample10.8.3.1OperatingConditions10.8.4InjectionTimingChange10.8.5%SootValidity10.8.61ThistestmethodisunderthejurisdictionofASTMCommitteeD02onPetroleumPr

13、oductsLiquidFuelsLubricantsisthedirectresponsibilityofSubcommitteeD02.B0.02onHeavyDutyEngineOils.CurrenteditionapprovedOct.12010.PublishedNovember2010.iginallyapprovedin2002.Lastpreviouseditionapprovedin2004asD6838–04.DO

14、I:10.1520D683804R10.2TheASTMTestMonitingCenter(TMC)willupdatechangesinthistestmethodbymeansofInfmationLetters.ThiseditionincpatesrevisionsinallInfmationLettersthroughNo.031.InfmationlettersmaybeobtainedfromtheASTMTestMon

15、itingCenter6555PennAve.PittsburghPA152064489Attention:Administrat.Copyright?ASTMInternational100BarrHarbDrivePOBoxC700WestConshohockenPA194282959.UnitedStates13.1.5heavydutyengineadj—ininternalcombustionenginesonethatisd

16、esignedtoallowoperationcontinuouslyatclosetoitspeakoutput.D44853.1.6nonreferenceoiln—anyoilotherthanareferenceoilsuchasaresearchfmulationcommercialoilcidateoil.D58443.1.7nonstardtestn—atestthatisnotconductedinconfmancewi

17、ththerequirementsinthestardtestmethodsuchasrunningonuncalibratedteststusingdifferenttestequipmentapplyingdifferentequipmentassemblyproceduresusingmodifiedoperatingconditions.D58443.1.8referenceoiln—anoilofknownperfmancea

18、cteristicsusedasabasisfcomparison.D58443.1.9sludgen—ininternalcombustionenginesadepositprincipallycomposedofinsolubleresinsoxidationproductsfromfuelcombustionthelubricantthatdoesnotdrainfromenginepartsbutcanberemovedbywi

19、pingwithacloth.D53023.1.10testoiln—anyoilsubjectedtoevaluationinanestablishedprocedure.D65573.1.11wearn—thelossofmaterialfromrelocationofmaterialonasurface.3.1.11.1Discussion—Weargenerallyoccursbetweentwosurfacesmovingre

20、lativetoeachotheristheresultofmechanicalchemicalactionbyacombinationofmechanicalchemicalactions.D58443.2DefinitionsofTermsSpecifictoThisStard:3.2.1crossheadn—anoverheadcomponentlocatedbetweentherockerarmeachintakevalveex

21、haustvalvepairthattransfersrockerarmtraveltotheopeningclosingofeachvalvepair.3.2.1.1Discussion—Eachcylinderhastwocrossheadsonefeachpairofintakevalvesexhaustvalves.3.2.2overheadn—ininternalcombustionenginesthecomponentsof

22、thevalvetrainlocatedinabovethecylinderhead.3.2.3overfuelv—anoperatingconditioninwhichthefuelflowexceedsthestardproductionsetting.3.2.4valvetrainn—ininternalcombustionenginestheseriesofcomponentssuchasvalvescrossheadsrock

23、erarmspushrodscamshaftthatopenclosetheintakeexhaustvalves.4.SummaryofTestMethod4.1ThistestmethodusesaCumminsM11330Edieselengine.Testoperationincludesa25min.warmupa2hbreakin200hinfour50hstages.DuringstagesACtheengineisope

24、ratedwithretardedfuelinjectiontimingisoverfueledtogenerateexcesssoot.DuringstagesBDtheengineisoperatedathigherloadconditionstoinducevalvetrainwear.4.2Pritoeachtesttheengineiscleanedassembledwithnewcylinderlinerspistonspi

25、stonringsoverheadvalvetraincomponents.Allaspectsoftheassemblyarespecified.4.3Afcedoildrainoilsampleoiladditionequivalenttoanoilconsumptionof0.21gkWhisperfmedattheendofeach25hperiod.4.4Theteststisequippedwiththeappropriat

26、einstrumentationtocontrolenginespeedfuelflowotheroperatingparameters.4.5Oilperfmanceisdeterminedbyassessingvalvecrossheadwearsludgedepositsoilfilterplugging.5.SignificanceUse5.1Thistestmethodwasdevelopedtoassesstheperfma

27、nceofanengineoiltocontrolengineweardepositsunderheavydutyoperatingconditionsedtoacceleratesootproductionvalvetrainweardepositfmationinaturbogedaftercooledfourstrokecycledieselengine.5.2Thistestmethodmaybeusedfengineoilsp

28、ecificationacceptancewhenalldetailsofthistestmethodareincompliance.ApplicableengineoilservicecategiesareincludedinSpecificationD4485.5.3Thetestmethodwascrelatedwithfieldservicedatadeterminedfromsidebysidecomparisonsoftwo

29、meoilsinonhighwayservice.Thesedataarecontainedinaresearchrept.6Thesesamefieldserviceoilswereusedtodeveloptheoperatingconditionsofthistestmethod.5.4Thedesignoftheengineusedinthistestmethodisrepresentativeofmanybutnotallmo

30、derndieselengines.Thisfactalongwiththeacceleratedoperatingconditionsshouldbeconsideredwhenextrapolatingtestresults.6.Apparatus6.1TestEngineConfiguration:6.1.1TestEngine—TheCumminsM11330Eisan11Linlineturbogedsixcylinderhe

31、avydutydieselengine.TheenginefeaturesaU.S.1994emissionsconfigurationwithelectroniccontroloffuelmeteringfuelinjectiontiming.ObtainthetestenginetheenginebuildpartskitfromthesupplierlistedinA2.2.Thecomponentsoftheenginebuil

32、dpartskitareshowninTableA3.1.6.1.2OilHeatExchangerAdapterBlocksBlockoffPlate—TheoilheatexchangerisrelocatedfromthestockpositionwiththeuseofadapterblocksasshowninFig.A4.1.Installanoilcoolerblockoffplateonthebackofthecoola

33、ntthermostathousingasshowninFig.A4.1.TheadapterblocksmaybeobtainedfromthesupplierlistedinX1.3.Controltheoiltemperaturebydirectingenginecoolantthroughtheoilheatexchanger(seeFig.A4.2).6.1.3OilPanModification—Modifytheoilpa

34、nasshowninFig.A4.3.AmodifiedoilpanmaybeobtainedfromthesupplierlistedinX1.3.6.1.4EngineControlModule(ECM)—ObtaintheECMfromthesupplierlistedinA2.2.TheECMprogramminghasbeenmodifiedtoprovideoverfuelingretardedinjectiontiming

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