瓦锡兰W32柴油机技术资料2-tr

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1、TechnologyReview2TechnologyReviewThisisasummaryofWärtsiläsapproachtodesignandtechnologyintheWärtsiläVasa32engine.Introduction4Design5ChemicalCharacteristicsoftheFuel6High-TemperatureCorrosion7Low-TemperatureCorrosion7LowNOxCombustion8FuelInjection9Piston10PistonRing

2、Set11CylinderLinerandAnti-polishingRing12ConnectingRodandBigEndBearings13CylinderHead14CrankshaftandMainBearings15EngineBlockandFoundation16Camshaft17TurbochargingSystem17CoolingSystems19LubricatingOilSystem20AutomationSystem21EasyMaintenance223IntroductionInthe1970

3、s,therapidincreaseincrudeoilpricesmadeithighlyeconomicaltouseheavyfuelinmedium-speeddieselengines.Consequently,in1979thefirstnew-generationenginewaslaunched-theWärtsiläVasa32–therealheavyfuelengine.Forthefirsttimeinhistory,heavyfueloperationwasassafeandsimpleasdiese

4、loiloperation.TheWärtsiläVasa32wastherealinitiatoroftheunifuelconcept,i.e.theconceptofrunninganengineentirelyonheavyfuelfromstarttostop.Operatorsquicklyunderstoodthefinancialadvantagesofchoosingthemosteconomicalfuelavailable,andwithinadecademorethan1,000WärtsiläVasa

5、32enginesweresold–trulyaworldrecordforanengineofthissize.Eversincelaunchingtheheavyfuelera,theWärtsiläVasa32hasmaintaineditsleadthroughsustaineddevelopment.ProductdevelopmentandvastexperiencehavebeenthekeystotheWärtsiläVasa32’ssuccessastherealheavyfuelengine.Thelate

6、stachievementinthisdevelopmentisthelowNOxcombustion,whichhasbeenappliedtoallnewVasa32engines.Inaddition,theVasa32isnowatruemulti-fuelengineaswell;gasoil,marinedieselfuel,intermediatefuel,heavyfuel,crudeoilandgas–theVasa32allowsyoutotalfreedomtoselectthemosteconomica

7、lfuelforyourspecificapplication.4DesignDesigningamoderndieselenginerequiresavastamountofinformationonthecombustionbehaviourandchemicalcharacteristicsofvariousfuels.Intermsofcombustionandcomponentperformance,heavyfuelisthemostdifficultofallfuels.Therefore,theVasa32ha

8、sbeendesignedtooperatesmoothlywiththetoughestfueltypesavailable:thosewithpooringinitionandcombustionqualitiescombinedwith“aggressive”chemi