【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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