The Electrical System

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AudiA1ElEcTrics|ElEcTronicsTheelecTricalsysTemTheAudiA1offersthehighestlevelofnetworkedinfotainmentforthefirsttimeintheA0carsegment.Thisimposesseveredemandsonthecar’selectricalsystem,whichhasbeendesignedandratedtocopewiththesedemandsatallstagesofdevelopment,fromfinalisationofthearchitecturetoseriesproduction.96 AUTHorsdevelopmentofthecAr’ssuchasplugsthatformpartoftheelec-electricAlsystemtricalsystem,thepackagecontainingholdersandcontrolunitsisalsopartofInrecentyears,increasingimportancehastheelectricalsystemdevelopmenttask.beenattachedtothecar’selectricalsys-Toobtainoptimalweightdistributionfortem.Thisisexplainedbythelargepropor-theAudiA1,itsbatteryhasbeenplacedtionofin-carelectronicequipment,evenattherearinthesparewheelwell.Thehelmuthummelinthecompactclass.Theelectricalsystemaxle-loaddistributionachievesinthiswayisHeadofon-BoardnetworkDevelop-hasitselfnowbecometheheaviestanddistinctlyimprovesroaddynamics.mentfortheA0andAModelseriesatoneofthemostexpensiveelectrical/elec-ThisbatterypositionmadeitnecessaryAUDiAGiningolstadt(Germany).tronicitemsinthecar.Itisalsoresponsi-fortheB+powersupplylinetoberunbleforaconsiderableproportionofthethroughthecarfromthereartotheenginevehicle’soverallquality.Itisthereforees-compartment,❶.sentialfordevelopmentworkontheelec-Duringthedevelopmentprocessthetricalsystemtobebasedonclearlydeter-wiringcross-sectionsinthecustomer-minedcost,weight,qualityandEHPVspecificwiringharnesswereoptimised,rudolfsedlmeier(engineeringhourspervehicle)object-anditprovedpossibletoreducethemisProjectManagerforon-Boardnetworkives.eventhoughthenumberofwiresisalsosystemswithinElectronicsDevelopmentInaddition,almosteverydecisionmadelower.Toachievethis,allwiringcross-atAUDiAGiningolstadt(Germany).inthecourseofavehicleprojectaffectssectionswerecheckedseveraltimesfortheelectricalsystemdirectlyorindirectly.maximumcurrentloadandshort-circuitsFortheAudiA1,developmentoftheelec-(loadanalysis).Theresultsconfirmedtricalsystemwasalsolocatedinthecen-thatthenext-smallerwirecross-sectiontreofthefieldoftensionrepresentedbycouldoftenbeused,whichagaincutallthesechallengesandopportunities.costsandweight.TheAudiA1justifiesitspremiumclaimAlthoughmorethan20additionalwiresbymakinguseofmodulesfromhigher-hadtobelaidinthevehicleinthecoursepositionedAudimodels.Thisexplainsofdevelopment,thesemeasuresresultedwhytheA1hasanextremelycomplexinareductionofapproximately600ginwiringharnessthatsatisfieshighqualitytheweightofcopperused.standards.TheAudiA1isthefirstcarinitsclassInadditiontotheactualwiringpathstobegivenhigh-endinfotainmentarchi-andthedevelopmentofcomponentstecture.Tonetworkthehigh-qualityinfo-❶PathoftheB+supplycableinthevehicleJune2010AudiA197 www.viewegteubner.deGasolineEnginesaretheanswertothechallengesoffuture❷MosTbusintheAudiA1f~x}vàyÜåvÑÜVvââ}ãèâzÑ[vâÖÇ~ÑzÜYÑ|~ÑzÜç~ä}ÜX~àzxäÜ]ÑÄzxä~ÖÑtainmentdevicestogether,aMOSTbushasdàÖxzââzâ¥ÜgèâäzÉâ¥ÜXzåzÇÖÜÉzÑä¥ÜdÖäzÑä~vÇbeenusedforthefirsttimeinthecompactù••§ØÜéå~~~¥Üüû¢ÜÜÜØÜk~ä}Üû§§ÜZ~|ØÜvàyxØÜYifÜü§¥••Ücarsegment,➋.Thisisachallengingtask,]gVbܧ¢£√û√£ûü£√•°¢•√ûespeciallywhenitcomestoinstallingtheX~àzxäÜ~ÑÄzxä~ÖÑÜâÜvàÅ√~|Ñ~ä~ÖÑÜzÑ|~ÑzâÜvàzÜwzxÖÉ~Ñ|Ü~Ñxàzv√wiring.Untilnow,high-endsystemsofâ~Ñ|ÇèÜ~ÉÜÖàävÑä¥ÜvÑyÜä}z~àÜÜÖäzÑä~vÇÜ~âÜâä~ÇÇÜäÖÜwzÜ{ãÇÇèÜzéÜÇÖ~äzyØÜthiskindwerenotfoundincarsbelow]ÑxàzvâzyÜÜÖçzàÜvÑyÜäÖàáãzÜxÖãÜÇzyÜç~ä}Ü{ãàä}zàÜàzyãxä~ÖÑâÜ~ÑÜthemidsizecategoryorevenhigher.The{ãzÇÜxÖÑâãÉÜä~ÖÑÜvÑyÜzÉ~ââ~ÖÑâÜç~ÇÇÜwzÜä}zÜxÇzvàÜäàzÑyÜ{ÖàÜ{ãäãàzÜ“Bosesoundsystem”needsopticalcon-yzåzÇÖÜÉzÑäâØÜZàÖÉÜäÖyvè∂âÜÜzàâÜzxä~åz¥Üä}zÜÅzèÜäzx}ÑÖÇÖ|~zâÜductorstocommunicatebetweentheindi-yà~å~Ñ|Üä}~âÜyzåzÇÖÜÉzÑäÜç~ÇÇÜwzÜÑzçÜ{ãzÇÜ~ÑÄzxä~ÖÑÜvÑyÜxÖÉ√Üwãâä~ÖÑÜÜàÖxzââzâØÜh}zÜwÖÖÅÜÜàzâzÑäâÜä}zÜÇväzâäÜyzåzÇÖÜÉzÑäâ¥Üvidualitemsofequipment.Toensurethat~ÇÇãâäàväzâÜvÑyÜzåvÇãväzâÜzÑ|~ÑzÜxÖÑxzÜäâÜâãx}ÜvâÜyÖçÑâ~ê~Ñ|ÜnocompromiseshadtobemadeinthevÑyÜyzâxà~wzâÜä}zÜàzáã~àzÉzÑäâÜä}väÜ}våzÜäÖÜwzÜÉzäÜwèÜÉväzà~√infotainmentareaforreasonsofspace,vÇâÜvÑyÜÖÜzàvä~Ñ|Üóã~yâØÜh}zÜÖãäÇÖÖÅÜväÜä}zÜzÑyÜÖ{Üä}zÜwÖÖÅÜy~â√theAudiA1’sinfotainmentcomponentsxãââzâÜç}zä}zàÜ{ãäãàzÜâÜvàÅ√~|Ñ~ä~ÖÑÜzÑ|~ÑzâÜç~ÇÇÜvx}~zåzÜä}zÜareinstalledunderneaththeflooroftheâvÉzÜÇzåzÇÜvâÜy~zâzÇÜzÑ|~ÑzâØloadarea.Whendevelopingacar’selectricalsys-tem,theenormousnumberofdifferentwiringharnessesisaspecialchallenge.Sincetherearesomanyfunctions–someofthemintroducedforthefirstdÇzvâzÜâzÑyÜÉzZvéÜ·ü§«•»°úúØ¢£¢£√üù•timeinthecompactcarclass–andonlyóóóóÜÜWÖÜ~zâ[vâÖÇ~ÑzÜYÑ|~ÑzÜç~ä}ÜX~àzxäÜ]ÑÄzxä~ÖÑafewrestrictionstothewaysinwhichÜ]gVbܧ¢£√û√£ûü£√•°¢•√ûÜÜYifÜü§¥••Ü«·Üâ}~ÜÜ~Ñ|ÜvÑyÜ}vÑyÇ~Ñ|»Ütheycanbecombined,undreamt-ofWÖÉÜvÑèÜÜûùúÜ•§Ü••úlevelsofflexibilitywereachievedfortheAudiA1.Eventhecustomer-specific`vâäÜÑvÉzܳÜZ~àâäÜÑvÉzÜwiringharnesshasmorethan700partXzÜvàäÉzÑäÜnumbersfortheAudiA1,whichcanbecombinedalmostatwill.ThefiguregäàzzäÜÑvÉzÜincreasesconsiderablywhenseparatewiringharnessessuchasforthedoors,dÖâäxÖyz¬n~ÜܳÜW~äèܳÜWÖãÑäàètailgateorgloveboxareincluded.ThisXväzܳÜg~|Ñväãàzmakescontrolofwiringharnessdefini-tions,productionandlogisticprocessingavÑv|~Ñ|ÜX~àzxäÖàâ∞ÜXàØÜfvÇ{ÜV~àÅzÇwvx}¥ÜUÇwàzx}äÜZØÜgx}~àÉvx}zàÜU[Ük~zâwvyzÑÜfVܧ¢†üamatterofsuchalevelofcomplexitythatcouldpreviouslyonlybefoundinthemidsizeclass.technikbewegt.dÇzvâzÜâãÜÜÇèÜväÜàzäv~ÇÜÜà~xzÜå~vÜwÖÖÅâ}ÖÜÜÖàÜy~àzxäÇèÜ{àÖÉÜj~zçz|·hzãwÑzàÜjzàÇv|ØgãwÄzxäÜäÖÜx}vÑ|zÜç~ä}ÖãäÜÑÖä~xzØÜú³ù••§Ø 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