【英文标准名称】:StandardTestMethodforEvaluatingAutomotiveSpark-IgnitionEngineFuelforElectronicPortFuelInjectorFoulingbyBenchProcedure
【原文标准名称】:通过电子孔燃料注射器污渣评价自动火花点火引擎燃料的标准试验方法
【标准号】:ASTMD6421-1999a(2009)
【标准状态】:现行
【国别】:美国
【发布日期】:1999
【实施或试行日期】:
【发布单位】:美国材料与试验协会(US-ASTM)
【起草单位】:D02.A0.01
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:basefuel;benchtest;depositcontroladditive;deposits(ininternalcombustionengines);electronicportfuelinjector(PFI);flowrate,hotsoak;injectorfouling;pintle;spark-ignitionenginefuel;testfuel;Automotiveenginefuels/oils;Basefuel;
【摘要】:DriveabilityproblemsinPFIautomobileswerefirstreportedin1984.Depositsarepronetoformonthemeteringsurfacesofpintle-typeelectronicfuelinjectors.Thesedepositsreducefuelflowthroughthemeteringorifices.Reductionsinmeteredfuelflowresultinanupsetintheair-fuelratio,whichcanaffectemissionsanddriveability.Whenheavyenough,thesedepositscanleadtodriveabilitysymptoms,suchashesitation,hardstarting,orlossofpower,oracombinationthereof,thatareeasilynoticedbytheaveragedriverandthatleadtocustomercomplaints.Themechanismoftheformationofdepositsisnotcompletelyunderstood.Itisbelievedtobeinfluencedbymanyfactors,includingdrivingcycle,engineandinjectordesign,andcompositionofthefuel.TheprocedureinthistestmethodhasbeenfoundtobuilddepositsinPFIsonaconsistentbasis.Thisprocedurecanbeusedtoevaluatedifferencesinbasefuelsandfueladditives.AstudyofPFIfoulingwasconductedinboththebenchtestandthevehicletestprocedurestoobtainacorrelation.ThevehicletestswereconductedasdescribedinTestMethodD5598.Thetestswereconductedonseveralbasegasolines,withandwithoutadditivesblendedintothesebasefuels.ThePFIbenchtestprovedtobereliable,repeatable,andagoodpredictorofPFIfoulingintestvehicles.StateandFederalLegislativeandRegulatoryAction8212;Legislativeandregulatoryactivity,primarilybythestateofCalifornia(see2.3)andthefederalgovernment(see2.4),necessitatetheacceptanceofastandardtestmethodtoevaluatethePFIdeposit-formingtendencyofanautomotivespark-ignitionenginefuel.RelevanceofResults8212;Theoperatingconditionsanddesignofthelaboratoryapparatususedinthistestmethodmaynotberepresentativeofacurrentvehiclefuelsystem.Thesefactorsmustbeconsideredwheninterpretingresults.TestValidity:ProceduralCompliance8212;Thetestresultsarenotconsideredvalidunlessthetestiscompletedincompliancewithallrequirementsofthistestmethod.DeviationsfromtheparameterlimitspresentedinSection10willresultinaninvalidtest.Engineeringjudgmentshallbeappliedduringconductofthetestmethodwhenassessinganyanomaliestoensurevalidityofthetestresults.1.1Thistestmethodcoversabenchtestproceduretoevaluatethetendencyofautomotivespark-ignitionenginefueltofoulelectronicportfuelinjectors(PFI).ThetestmethodutilizesabenchapparatusequippedwithBoschinjectorsspecifiedforuseina1985-1987Chrysler2.2-Lturbochargedengine.ThistestmethodisbasedonatestproceduredevelopedbytheCoordinatingResearchCouncil(CRC)forpredictionofthetendencyofspark-ignitionenginefueltoformdepositsinthesmallmeteringclearancesofinjectorsinaportfuelinjectionengine(seeCRCReportNo.592).1.2Thetestmethodisapplicabletospark-ignitionenginefuels,whichmaycontainantioxidants,corrosioninhibitors,metaldeactivators,dyes,depositcontroladditives,demulsifiers,oroxygenates,oracombinationthereof.1.3ThevaluesstatedinSIunitsaretoberegardedasthestandard.Approximateinch-poundunitsareshowninparenthesesforinformationpurposesonly.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulato......
【中国标准分类号】:E31
【国际标准分类号】:27_060_10
【页数】:9P.;A4
【正文语种】:英语
基本信息
| 标准名称： | 织物摩擦起电电压测定方法 |
| 中标分类： |
纺织 >>
纺织综合 >>
基础标准与通用方法 |
| ICS分类： |
纺织和皮革技术 >>
纺织产品 >>
纺织产品综合
|
| 替代情况： | 原标准号ZB W04009-1989 |
| 发布部门： | 中华人民共和国纺织工业部 |
| 发布日期： | 1989-02-13 |
| 实施日期： | 1999-02-01 |
| 首发日期： | 1900-01-01 |
| 作废日期： | 1900-01-01 |
| 提出单位： | 中华人民共和国纺织工业部 |
| 归口单位： | 纺织工业部标准化研究所 |
| 起草单位： | 山东省纺织科学研究院 |
| 起草人： | 孙冰俏 |
| 出版社： | 中国标准出版社 |
| 出版日期： | 1900-01-01 |
| 页数： | 3页 |
适用范围
本标准规定了在试验条件下薄型织物以摩擦型式带电后静电特性的评定方法。
本标准不适用于铺地织物、网眼织物等纺织品的静电试能测试。
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所属分类： 纺织 纺织综合 基础标准与通用方法 纺织和皮革技术 纺织产品 纺织产品综合