IntheASTMsystem,aspeciﬁcAPIdesignationisassignedtoeachcategory

lilai22 · 发表于 2016-7-22 15:32:59

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ThisspeciﬁcationcoversallthecurrentlyactiveAmericanPetroleumInstitute(API)engineoilperformancecategoriesthathavebeendeﬁnedinaccordancewiththeASTMconsensusprocess.ThereareorganizationswithspeciﬁcationsnotsubjecttotheASTMconsensusprocess,suchastheInternationalLubricantStandardizationandApprovalCommittee(ILSAC),AmericanPetroleumInstitute(API–SMSpeciﬁcation),andtheAssociationdesConstructeursEuropeansd’Automobiles(ACEA).Certainofthesespeciﬁcations,whichhavebeendeﬁnedprimarilybytheuseofcurrentASTMtestmethods,havealsobeenincludedintheAppendixofthisdocumentforinformation.IntheASTMsystem,aspeciﬁcAPIdesignationisassignedtoeachcategory.Thesystemisopen-ended,thatis,newdesignationsareassignedforusewithnewcategoriesaseachnewsetofoilperformancecharacteristicsaredeﬁned.Oilcategoriesmaybereferencedbyenginebuildersinmakinglubricantrecommendations,andusedbylubricantsuppliersandcustomersinidentifyingproductsforspeciﬁcapplications.Whereapplicable,candidateoilprogramsareconductedinaccordancewiththeAmericanChemistryCouncil(ACC)PetroleumAdditivesProductApprovalCodeofPractice.

mikeheseri · 发表于 2016-7-23 09:33:26

楼主干嘛，背诵课文饿

fbleecn · 发表于 2016-7-24 07:42:24

楼主干嘛

shijianguang · 发表于 2017-3-13 10:46:26

非常感謝你的分享..

[English] IntheASTMsystem,aspeciﬁcAPIdesignationisassignedtoeachcategory

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[English] IntheASTMsystem,aspeciﬁcAPIdesignationisassignedtoeachcategory

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