【英文标准名称】:StandardTestMethodforDeterminationoftheTendencyofLubricantstoPromotePreignitioninTwo-Stroke-CycleGasolineEngines
【原文标准名称】:测定润滑油对改进二冲程循环汽油发动机预燃倾向的标准试验方法
【标准号】:ASTMD4858-2002
【标准状态】:现行
【国别】:
【发布日期】:2002
【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.B0.06
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:试验;内燃机;润滑油
【英文主题词】:air-cooled;lubricant;preignition;twocyclegasolineengines
【摘要】:Two-stroke-cyclegasolineenginesaregenerallymorepronetopreignitionthanarefour-stroke-cycleenginesduetotheabsenceoftheinternalcoolingthattakesplaceduringtheinductionstrokeofthefour-stroke-cycleengines.Preignitioncanleadtomajorpistondamage,eitherdirectlyduetolocalizedoverheatingorastheresultofpreignition-induceddetonation.Somelubricantadditivesthatarewidelyusedinfour-stroke-cyclegasolineengineoilsareknowntoincreasetheprobabilityofpreignitioningasolinetwo-stroke-cycleengines.Thisprocedureisusedtodeterminethetendencyofanoiltoinducepreignitioninbothwater-cooledandair-cooledtwo-stroke-cyclegasolineengines.1.1Thistestmethodevaluatestheperformanceoflubricantsintendedforuseintwo-stroke-cyclespark-ignitiongasolineengineswhicharepronetopreignition.1.2Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.1.3ThevaluesstatedinSIunitsarethestandard.Thevaluesgiveninparenthesesareprovidedforinformationonly.
【中国标准分类号】:E34
【国际标准分类号】:75_100
【页数】:9P.;A4
【正文语种】: