ASTM D4953-2006 汽油和汽油元氧混合物蒸气压力的标准试验方法(干燥法)
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【英文标准名称】:StandardTestMethodforVaporPressureofGasolineandGasoline-OxygenateBlends(DryMethod)
【原文标准名称】:汽油和汽油元氧混合物蒸气压力的标准试验方法(干燥法)
【标准号】:ASTMD4953-2006
【标准状态】:现行
【国别】:
【发布日期】:2006
【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】:D02.08
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:汽油;试验;蒸气压力
【英文主题词】:
【摘要】:Vaporpressureisanimportantphysicalpropertyofliquidspark-ignitionenginefuels.Itprovidesanindicationofhowafuelwillperformunderdifferentoperatingconditions.Forexample,vaporpressureisafactorindeterminingwhetherafuelwillcausevaporlockathighambienttemperatureorathighaltitude,orwillprovideeasystartingatlowambienttemperature.Petroleumproductspecificationsgenerallyincludevaporpressurelimitstoensureproductsofsuitablevolatilityperformance.Note38212;Vaporpressureoffuelsisregulatedbyvariousgovernmentagencies.1.1Thistestmethodcoversandisapplicabletogasolinesandgasoline-oxygenateblendswithavaporpressurerangefrom35to100kPa(5to15psi)(seeNote2).Thistestmethod,amodificationofTestMethodD323(ReidMethod),providestwoprocedurestodeterminethevaporpressure(Note1)ofgasolineandgasoline-oxygenateblends.Note0Becausetheexternalatmosphericpressureiscounteractedbytheatmosphericpressureinitiallypresentintheairchamber,thisvaporpressureisanabsolutepressureat37.8176;C(100176;F)inkilopascals(pounds-forcepersquareinch).Thisvaporpressurediffersfromthetruevaporpressureofthesampleduetosomesmallvaporizationofthesampleandairintheconfinedspace.Note0Vaporpressureofgasolineorgasoline-oxygenateblendsbelow35kPa(5psi)orgreaterthan100kPa(15psi)canbedeterminedwiththistestmethodbuttheprecisionandbias(Section)donotapply.Formaterialswithavaporpressuregreaterthan100kPa(15psi),usea0to200kPa(0to30psi)gaugeasspecifiedintheannexofTestMethodD323.1.2Somegasoline-oxygenateblendsmayshowahazewhencooledto0to1176;C.Ifahazeisobservedin9.4,itshallbeindicatedinthereportingofresults.Theprecisionandbiasstatementsforhazysampleshavenotbeendetermined(seeNote7).1.3ThevaluesstatedinSIunitsaretoberegardedasthestandard.Thevaluesgiveninparenthesesareforinformationonly.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.Specificwarningsaregivenin7.5,8.4.1,8.5.1,9.1,A1.1,andA1.1.3.
【中国标准分类号】:E31
【国际标准分类号】:75_160_20
【页数】:8P.;A4
【正文语种】:
【原文标准名称】:汽油和汽油元氧混合物蒸气压力的标准试验方法(干燥法)
【标准号】:ASTMD4953-2006
【标准状态】:现行
【国别】:
【发布日期】:2006
【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】:D02.08
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:汽油;试验;蒸气压力
【英文主题词】:
【摘要】:Vaporpressureisanimportantphysicalpropertyofliquidspark-ignitionenginefuels.Itprovidesanindicationofhowafuelwillperformunderdifferentoperatingconditions.Forexample,vaporpressureisafactorindeterminingwhetherafuelwillcausevaporlockathighambienttemperatureorathighaltitude,orwillprovideeasystartingatlowambienttemperature.Petroleumproductspecificationsgenerallyincludevaporpressurelimitstoensureproductsofsuitablevolatilityperformance.Note38212;Vaporpressureoffuelsisregulatedbyvariousgovernmentagencies.1.1Thistestmethodcoversandisapplicabletogasolinesandgasoline-oxygenateblendswithavaporpressurerangefrom35to100kPa(5to15psi)(seeNote2).Thistestmethod,amodificationofTestMethodD323(ReidMethod),providestwoprocedurestodeterminethevaporpressure(Note1)ofgasolineandgasoline-oxygenateblends.Note0Becausetheexternalatmosphericpressureiscounteractedbytheatmosphericpressureinitiallypresentintheairchamber,thisvaporpressureisanabsolutepressureat37.8176;C(100176;F)inkilopascals(pounds-forcepersquareinch).Thisvaporpressurediffersfromthetruevaporpressureofthesampleduetosomesmallvaporizationofthesampleandairintheconfinedspace.Note0Vaporpressureofgasolineorgasoline-oxygenateblendsbelow35kPa(5psi)orgreaterthan100kPa(15psi)canbedeterminedwiththistestmethodbuttheprecisionandbias(Section)donotapply.Formaterialswithavaporpressuregreaterthan100kPa(15psi),usea0to200kPa(0to30psi)gaugeasspecifiedintheannexofTestMethodD323.1.2Somegasoline-oxygenateblendsmayshowahazewhencooledto0to1176;C.Ifahazeisobservedin9.4,itshallbeindicatedinthereportingofresults.Theprecisionandbiasstatementsforhazysampleshavenotbeendetermined(seeNote7).1.3ThevaluesstatedinSIunitsaretoberegardedasthestandard.Thevaluesgiveninparenthesesareforinformationonly.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.Specificwarningsaregivenin7.5,8.4.1,8.5.1,9.1,A1.1,andA1.1.3.
【中国标准分类号】:E31
【国际标准分类号】:75_160_20
【页数】:8P.;A4
【正文语种】:
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