ISO4548-12-2017内燃机全流式机油滤清器试验方法 第12部分：滤清效率（颗粒计数法）和

ISO2017METHODSOFTESTFORFULLFLOWLUBRICATINGOILFILTERSFORINTERNALCOMBUSTIONENGINESPART12FILTRATIONEFFICIENCYUSINGPARTICLECOUNTINGANDCONTAMINANTRETENTIONCAPACITYMTHODESDESSAIDESFILTRESHUILEDELUBRIFICATIONPLEINDBITPOURLESMOTEURSCOMBUSTIONINTERNEPARTIE12EFFICACITDEFILTRATIONPARCOMPTAGEDESPARTICULESETCAPACITDERTENTIONDESCONTAMINANTSINTERNATIONALSTANDARDISO454812SECONDEDITION201705REFERENCENUMBERISO4548122017EISO4548122017EIIISO2017ALLRIGHTSRESERVEDCOPYRIGHTPROTECTEDDOCUMENTISO2017,PUBLISHEDINSWITZERLANDALLRIGHTSRESERVEDUNLESSOTHERWISESPECIFIED,NOPARTOFTHISPUBLICATIONMAYBEREPRODUCEDORUTILIZEDOTHERWISEINANYFORMORBYANYMEANS,ELECTRONICORMECHANICAL,INCLUDINGPHOTOCOPYING,ORPOSTINGONTHEINTERNETORANINTRANET,WITHOUTPRIORWRITTENPERMISSIONPERMISSIONCANBEREQUESTEDFROMEITHERISOATTHEADDRESSBELOWORISOSMEMBERBODYINTHECOUNTRYOFTHEREQUESTERISOCOPYRIGHTOFFICECHDEBLANDONNET8CP401CH1214VERNIER,GENEVA,SWITZERLANDTEL41227490111FAX41227490947COPYRIGHTISOORGWWWISOORGISO4548122017EFOREWORDIVINTRODUCTIONV1SCOPE12NORMATIVEREFERENCES13TERMSANDDEFINITIONS14SYMBOLS25TESTEQUIPMENTANDMATERIALS251TESTEQUIPMENT2511TESTRIG2512ONLINEDILUTIONANDPARTICLECOUNTINGSYSTEM4513TIMER552TESTMATERIALS5521TESTCONTAMINANT5522TESTFLUID56ACCURACYOFMEASURINGINSTRUMENTSANDTESTCONDITIONS57TESTRIGVALIDATION671VALIDATIONOFFILTERTESTCIRCUIT672VALIDATIONOFCONTAMINANTINJECTIONCIRCUIT673VALIDATIONOFONLINEDILUTIONANDPARTICLECOUNTINGSYSTEM78PRELIMINARYPREPARATION781TESTFILTERASSEMBLY782CONTAMINANTINJECTIONCIRCUIT783FILTERTESTCIRCUIT99TESTPROCEDURE991INITIALMEASUREMENT992PERFORMANCETEST1110CALCULATIONSANDREPORTOFTESTRESULTS12101CALCULATIONS121011GENERAL121012GRAVIMETRICLEVELS121013FILTRATIONEFFICIENCIES131014MICROMETERRATINGS131015INJECTEDMASSOFCONTAMINANT141016NONRETAINEDMASSOFCONTAMINANT141017RETAINEDFILTERCAPACITY14102TESTREPORT14ANNEXANORMATIVESPECIFICATIONOFTESTFLUIDFOROILFILTERTEST15ANNEXBINFORMATIVETYPICALFILTERTESTREPORT16ANNEXCNORMATIVEFILTEREFFICIENCYCALCULATIONS22ANNEXDINFORMATIVEROUNDROBINEXERCISE25BIBLIOGRAPHY32ISO2017ALLRIGHTSRESERVEDIIICONTENTSPAGEISO4548122017EFOREWORDISOTHEINTERNATIONALORGANIZATIONFORSTANDARDIZATIONISAWORLDWIDEFEDERATIONOFNATIONALSTANDARDSBODIESISOMEMBERBODIESTHEWORKOFPREPARINGINTERNATIONALSTANDARDSISNORMALLYCARRIEDOUTTHROUGHISOTECHNICALCOMMITTEESEACHMEMBERBODYINTERESTEDINASUBJECTFORWHICHATECHNICALCOMMITTEEHASBEENESTABLISHEDHASTHERIGHTTOBEREPRESENTEDONTHATCOMMITTEEINTERNATIONALORGANIZATIONS,GOVERNMENTALANDNONGOVERNMENTAL,INLIAISONWITHISO,ALSOTAKEPARTINTHEWORKISOCOLLABORATESCLOSELYWITHTHEINTERNATIONALELECTROTECHNICALCOMMISSIONIECONALLMATTERSOFELECTROTECHNICALSTANDARDIZATIONTHEPROCEDURESUSEDTODEVELOPTHISDOCUMENTANDTHOSEINTENDEDFORITSFURTHERMAINTENANCEAREDESCRIBEDINTHEISO/IECDIRECTIVES,PART1INPARTICULARTHEDIFFERENTAPPROVALCRITERIANEEDEDFORTHEDIFFERENTTYPESOFISODOCUMENTSSHOULDBENOTEDTHISDOCUMENTWASDRAFTEDINACCORDANCEWITHTHEEDITORIALRULESOFTHEISO/IECDIRECTIVES,PART2SEEWWWISOORG/DIRECTIVESATTENTIONISDRAWNTOTHEPOSSIBILITYTHATSOMEOFTHEELEMENTSOFTHISDOCUMENTMAYBETHESUBJECTOFPATENTRIGHTSISOSHALLNOTBEHELDRESPONSIBLEFORIDENTIFYINGANYORALLSUCHPATENTRIGHTSDETAILSOFANYPATENTRIGHTSIDENTIFIEDDURINGTHEDEVELOPMENTOFTHEDOCUMENTWILLBEINTHEINTRODUCTIONAND/ORONTHEISOLISTOFPATENTDECLARATIONSRECEIVEDSEEWWWISOORG/PATENTSANYTRADENAMEUSEDINTHISDOCUMENTISINFORMATIONGIVENFORTHECONVENIENCEOFUSERSANDDOESNOTCONSTITUTEANENDORSEMENTFORANEXPLANATIONONTHEMEANINGOFISOSPECIFICTERMSANDEXPRESSIONSRELATEDTOCONFORMITYASSESSMENT,ASWELLASINFORMATIONABOUTISOSADHERENCETOTHEWORLDTRADEORGANIZATIONWTOPRINCIPLESINTHETECHNICALBARRIERSTOTRADETBTSEETHEFOLLOWINGURLWWWISOORG/ISO/FOREWORDHTMLTHECOMMITTEERESPONSIBLEFORTHISDOCUMENTISISO/TC70,INTERNALCOMBUSTIONENGINES,SUBCOMMITTEESC7,TESTSFORLUBRICATINGOILFILTERSTHISSECONDEDITIONCANCELSANDREPLACESTHEFIRSTEDITIONISO4548122000,WHICHHASBEENTECHNICALLYREVISEDALISTOFALLPARTSINTHEISO4548SERIESCANBEFOUNDONTHEISOWEBSITEIVISO2017ALLRIGHTSRESERVEDISO4548122017EINTRODUCTIONISO4548ESTABLISHESSTANDARDTESTPROCEDURESFORMEASURINGTHEPERFORMANCEOFFULLFLOWLUBRICATINGOILFILTERSFORINTERNALCOMBUSTIONENGINESITHASBEENPREPAREDINSEPARATEPARTS,EACHPARTRELATINGTOAPARTICULARPERFORMANCECHARACTERISTICTOGETHER,THETESTSPROVIDETHEINFORMATIONNECESSARYTOASSESSTHECHARACTERISTICSOFAFILTER,BUTIFAGREEDBETWEENTHEPURCHASERANDTHEMANUFACTURER,THETESTSMAYBECONDUCTEDSEPARATELYISO2017ALLRIGHTSRESERVEDVMETHODSOFTESTFORFULLFLOWLUBRICATINGOILFILTERSFORINTERNALCOMBUSTIONENGINESPART12FILTRATIONEFFICIENCYUSINGPARTICLECOUNTINGANDCONTAMINANTRETENTIONCAPACITY1SCOPETHISDOCUMENTSPECIFIESAMULTIPASSFILTRATIONTESTWITHCONTINUOUSCONTAMINANTINJECTIONANDUSINGTHEONLINEPARTICLECOUNTINGMETHODFOREVALUATINGTHEPERFORMANCEOFFULLFLOWLUBRICATINGOILFILTERSFORINTERNALCOMBUSTIONENGINESTHESCOPEOFTHISDOCUMENTISLIMITEDTOSTEADYSTATECONDITIONSANDDOESNOTADDRESSFLUCTUATIONSINTHEFLOWRATETHETESTPROCEDUREDETERMINESTHECONTAMINANTCAPACITYOFAFILTER,ITSPARTICULATEREMOVALCHARACTERISTICSANDDIFFERENTIALPRESSURETHISTESTISINTENDEDFORAPPLICATIONTOFILTERELEMENTSWITHANEFFICIENCYOFLESSTHAN99ATPARTICLESIZEGREATERTHAN10MNOTESEVERALTESTFLOWLOOPSBUILTIN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