【机械专业英语翻译AtthispointIthoughtIwasreadytopublishmyfirstbookonStirlingengines.IcalledBrentagain,andIsoonrealizedwehadanewdesignrequirement.Helookedoverthedesignandwatchedthevideos.Hisexpertadvice:】
机械专业英语翻译
AtthispointIthoughtIwasreadytopublishmyfirstbookonStirlingengines.IcalledBrentagain,andIsoonrealizedwehadanewdesignrequirement.Helookedoverthedesignandwatchedthevideos.Hisexpertadvice:Buildanenginewitharotatingflywheel!Brentexpressedthatformanypeoplereciprocatingengineslooklikeanenginethatistryingtostartbutneverquitemakesit.IfIwantedabookthatwouldgrabpeople'sattention,Ineededtohaveanenginethatbehavedinafamiliarmanner.Thatiswhytherearethreeenginesdescribedinthebook.Thesecondandthirddesignsaremodificationsofthefirstdesign,eachwiththeadditionofarevolvingflywheel.EachtimeIbuiltoneofthesemodelsIwouldlearnandimproveonpreviousattempts.ImadeenoughimprovementsinthesubsequentmodelsthatIeventuallywentbackandrebuiltthefirstreciprocatingengineandincludedtheimprovements.Soifyoufollowmyinstructionshere,youwillbebuildingthelatestandmostimprovedversions.
Modifyingthedesignfortheadditionofarevolvingflywheelwasnotdifficulttodo.Engine#2takestheflywheeloffofthereciprocatingdriveaxleandmovesitontoitsownrotatingverticalaxle.Theaxlesmaintaintheverticalorientationusedinthefirstengine.Theflywheelmassstillstoreskineticenergy,butasarotatingwheelratherthanareciprocator.Itisaveryefficientdesignandisfuntooperate.Itisoneofmypersonalfavorites.
Engine#3wassimplyanattempttobuildaStirlingenginewitharotatingflywheelandwithasfewmovingpartsaspossible.Thehorizontalaxisoftheflywheelmadeitnecessarytousebearings.Thebearingsweremadefromglassbeadsinsteadofsteelballbearings.Thebeadscost$0.10eachinsteadof$17.00!Thepolishedmetalshaftpassingthroughthebeadhasathincoatofsiliconelubricanttohelpfightthefrictioninthehomemadebearings.Engine#3isnotasefficientasthefirsttwobecausethehorizontaldriveaxlebearingsintroduceadditionalfriction.IhavesucceededingettingEngine#3torunfromtheheatofmyhand,butonlywhenusingheliuminthepressurechamber.Itwillrunwellondirectsunlightandotherlowtemperaturedifferentials.Theglassbeadbearingsworkwellenoughthatyouwillseetheminallthreedesigns.
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