【英文标准名称】:StandardTestMethodforGumContentinFuelsbyJetEvaporation
【原文标准名称】:用喷射蒸发法测定燃料中原在胶含量的标准试验方法
【标准号】:ASTMD381-2009
【标准状态】:现行
【国别】:美国
【发布日期】:2009
【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】:D02.14
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:aviationfuels;existentgum;motorgasoline;solventwashedgum;unwashedgum;Automotiveenginefuels/oils;Aviationfuels;Evaporationresidue;Evaporators/evaporation;Existentgum;Gasoline;Gumcontent(washed/unwashed);Jetevaporation;Unwashedgu
【摘要】:Thetruesignificanceofthistestmethodfordeterminingguminmotorgasolineisnotfirmlyestablished.Ithasbeenprovedthathighgumcancauseinduction-systemdepositsandstickingofintakevalves,andinmostinstances,itcanbeassumedthatlowgumwillensureabsenceofinduction-systemdifficulties.Theusershould,however,realizethatthetestmethodisnotofitselfcorrelativetoinduction-systemdeposits.Theprimarypurposeofthetestmethod,asappliedtomotorgasoline,isthemeasurementoftheoxidationproductsformedinthesamplepriortoorduringthecomparativelymildconditionsofthetestprocedure.Sincemanymotorgasolinesarepurposelyblendedwithnonvolatileoilsoradditives,theheptaneextractionstepisnecessarytoremovethesefromtheevaporationresiduesothatthedeleteriousmaterial,gum,maybedetermined.Withrespecttoaviationturbinefuels,largequantitiesofgumareindicativeofcontaminationoffuelbyhigherboilingoilsorparticulatematterandgenerallyreflectpoorhandlingpracticesindistributiondownstreamoftherefinery.1.1Thistestmethodcoversthedeterminationoftheexistentgumcontentofaviationfuels,andthegumcontentofmotorgasolinesorothervolatiledistillatesintheirfinishedform,(includingthosecontainingalcoholandethertypeoxygenatesanddepositcontroladditivesx2014;seeNote7foradditionalinformation)atthetimeoftest.1.2Provisionsaremadeforthedeterminationoftheheptaneinsolubleportionoftheresidueofnon-aviationfuels.1.3ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.3.1TheacceptedSIunitofpressureisthePascal(Pa);theacceptedSIunitfortemperatureisdegreesCelsius.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.Forspecificwarningstatements,see6.4,7.4,and9.1.
【中国标准分类号】:E31
【国际标准分类号】:75_160_20
【页数】:6P.;A4
【正文语种】:英语