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1、-1-Dr.-Ing.Th.Heiduk,Dipl.-Ing.R.Dornhöfer,Dipl.-Ing.A.Eiser,Dr.-Ing.M.Grigo,Dipl.-Ing.A.Pelzer,Dr.-Ing.R.Wurms,AUDIAG,IngolstadtThenewgenerationoftheR4TFSIenginefromAudiAbstractThenew1.8lTFSIengineintheAudiB8family(A4,A5)isthethirdgenerationofthefour-cylinderinlineTFS
2、ItechnologytobelaunchedontothemarketbyAudi.TheenginehasbeencompletelyrevisedinordertomeetambitiousCO2targetsandensurecompliancewithfutureEU6emissionsstandards.Thedevelopmentalsoincorporatedotherstrategicobjectives,suchascross-marketapplicabilityandintegrationintotheVWG
3、roup'sworldwidemanufacturingnetwork,asongoingkeyelementsoftheEA888globalenginefamily.Thenewgenerationfeaturesnumerousinnovativetechnologies,includingacooledexhaustmanifoldintegratedintothecylinderhead,acombinedFSI/MPIfuelinjectionsystemwith200barhigh-pressureinjection,
4、andtheAudivalveliftsystem[1,2]ontheexhaustsideincombinationwithanexhaustcamshaftadjuster.Aparticularhighlightistheworld'sfirstdeploymentofanentirelynewlydevelopedrotaryslidecontrolsystemtoimplementintelligentthermo-management.Bringingtogetherallthefundamentalrevisionst
5、ocomponentswithaviewtooptimisingthermodynamics,frictionandweight,thefirstembodimentofthisnewenginegeneration–the1.8lTFSI–representsanewbenchmarkinitsclassintermsoffuelefficiencyandperformance.32.InternationalesWienerMotorensymposium2011-2-Figure1:OverallviewofthenewEA8
6、88R4TFSIengine(longitudinalinstallationoftheengine)1.Introduction/developmentgoalsThehistoryofAudiTFSIenginesextendsbackto2004,whentheworld'sfirstdirect-injectionturboengine,basedonthetriedandprovenEA113engineseries,wentintoproduction(2.0lTFSI)[3,4].Developmentofthecon
7、ceptforthenewEA888engineseries[5]withchaindrivehadactuallybegunbackin2003,withtheaimofreplacingthesuccessfultimingbeltdrivenEA113series.TheEA888enginewasdesignedfromtheverybeginningasa'globalengine'fortheVWGroup(acrossallbrandsandplatforms)andforworldwideapplication(ac
8、rossallmarkets).Followingthesuccessfullaunchofthiscompletelynewenginegenerationinspring2007(Gen.1)[5]andtheintroducti
